Unit 5 A fine balance（01词汇语法）（单元巩固提升）2026-2027学年外研版九年级英语上册

该初中英语单元知识清单系统梳理了九年级Unit 5 "A fine balance"的核心内容，涵盖核心词汇、短语、句型及that/which引导的限制性定语从句，通过“背诵-默写-强化”三级词汇学习、短语句型情境化应用及语法规则系统梳理，搭建从基础记忆到综合运用的递进式学习支架。 清单以分类分级构建知识体系，核心词汇分背诵清单（含词性词义）、默写清单（挖空检测）及强化部分（常用搭配+例句），语法梳理明确that/which用法区别及易错点（如先行词为不定代词时用that），培养学生语言能力和思维品质。设计拓展练习（单选、词形转换、句子翻译），适配不同学习需求，助力学生自主巩固，教师可直接用于课堂检测或分层作业设计。

2026-2027学年上学期九年级英语单元巩固提升(外研版2024) Unit 5 A fine balance词汇语法 目录 第一部分 核心词句锁定基础 高效学习 第二部分 语法梳理深度优化 扫清盲区 第三部分 拓展深化用法演练 能力巩固 ◇Part 01 核心词句 背｜诵｜清｜单 Unit 5 单元核心词汇背诵清单 ( 1 / 2 )学科网（北京）股份有限公司 学科网（北京）股份有限公司 drop v.降低 tourist n.游客 ecosystem n.生态系统 balance v.(使)平稳,(使)保持平衡；n.平衡 smog n.烟雾 admire v.欣赏,观赏 mark n.痕迹;标记 farmland n.农田,耕地 rapid adj.快速的,迅速的 society n.社会 till conj.直到 cancel v.取消 permit v.允许;使成为可能 organisation n.组织,团体,机构 harm v.损害;危害;伤害 punishment n.惩罚手段;处罚 global adj.全球的,全世界的 overfishing n.过度捕捞 greenhouse n.温室,暖房 gas n.气,气体 control v.控制,限制 rubbish n.垃圾,废弃物 cartoonist n.漫画家;动画家 logging n.伐木 alarm n.警报;警报器 foreigner n.外国人 logo n.标识,标志,徽标 endangered adj.濒危的,濒于灭绝的 vulnerable adj.脆弱的;易受伤的 worldwide adv.世界各地 protection n.保护 environmental adj.自然环境的 population n.人口;动植物的总数 undoubtedly adv.毫无疑问地,确定无疑地 survival n.继续生存;幸存 默｜写｜清｜单 Unit 5 单元核心词汇默写清单 ____________ v.降低 ____________ n.游客 ____________ n.生态系统 ____________ v.(使)平稳,(使)保持平衡；n.平衡 ____________ n.烟雾 ____________ v.欣赏,观赏 ____________ n.痕迹;标记 ____________ n.农田,耕地 ____________ adj.快速的,迅速的 ____________ n.社会 ____________ conj.直到 ____________ v.取消 ____________ v.允许;使成为可能 ____________ n.组织,团体,机构 ____________ v.损害;危害;伤害 ____________ n.惩罚手段;处罚 ____________ adj.全球的,全世界的 ____________ n.过度捕捞 ____________ n.温室,暖房 ____________ n.气,气体 ____________ v.控制,限制 ____________ n.垃圾,废弃物 ____________ n.漫画家;动画家 ____________ n.伐木 ____________ n.警报;警报器 ____________ n.外国人 ____________ n.标识,标志,徽标 ____________adj.濒危的,濒于灭绝的 ____________ adj.脆弱的;易受伤的 ____________ adv.世界各地 ____________ n.保护 ____________ adj.自然环境的 ____________ n.人口;动植物的总数 ____________ adv.毫无疑问地,确定无疑地 ____________ n.继续生存;幸存 核｜心｜强｜化 一、核心词汇 1. disappear v. 消失；不复存在 【常用搭配】disappear from 从……消失 例句：Many wild animals disappear from their living areas because of pollution. 许多野生动物因污染从栖息地消失。 The noise of traffic disappeared gradually at night. 夜晚，车流的噪音逐渐消失。 2. increase v. 增加；增长 【常用搭配】increase in 在……方面增长；increase rapidly 快速增长 例句：The number of animals will increase if the environment gets better. 如果环境变好，动物的数量将会增加。 Pollution has increased greatly in some industrial areas. 一些工业区的污染大幅加剧。 3. drop v. 下降；降低；落下 【常用搭配】drop greatly 大幅下降；drop down 落下 例句：The noise level drops greatly when human activities stop. 人类活动停止后，噪音分贝会大幅下降。 The temperature will drop in winter in most areas. 大多数地区的冬季气温会下降。 4. harm v. 伤害；损害 【常用搭配】harm the environment 破坏环境；harm wildlife 伤害野生动物 例句：Cutting down too many trees will harm the balance of the ecosystem. 过度砍伐树木会破坏生态系统的平衡。 Ocean pollution harms thousands of sea animals every year. 海洋污染每年都会伤害成千上万的海洋生物。 5. protect v. 保护 【常用搭配】protect...from... 保护……免受……伤害 例句：We should protect forests from being destroyed. 我们应该保护森林免遭破坏。 The government takes measures to protect endangered animals. 政府采取措施保护濒危动物。 6. survive v. 生存；存活 【常用搭配】survive in 在……中生存；survive from 从……中幸存 例句：Many rare plants can only survive in wetland ecosystems. 许多珍稀植物只能在湿地生态系统中存活。 Some animals fail to survive the terrible environmental changes. 一些动物无法在恶劣的环境变化中生存。 7. develop v. 发展；成长 【常用搭配】develop rapidly 快速发展；develop a balance 形成平衡 例句：Human society develops rapidly at the cost of nature. 人类社会以牺牲自然为代价快速发展。 Forests develop well when there is no human damage. 没有人类破坏时，森林会良性生长。 8. ecosystem n. 生态系统 例句：Every living thing plays a role in the earth's ecosystem. 每种生物都在地球生态系统中发挥作用。 Human activities have a huge influence on natural ecosystems. 人类活动对自然生态系统有巨大影响。 9. pollution n. 污染 【常用搭配】environmental pollution 环境污染；ocean pollution 海洋污染 例句：Air pollution hides many natural wonders in the world. 空气污染掩盖了世间许多自然奇观。 Most ocean pollution comes from human land activities. 大部分海洋污染来自人类的陆地活动。 10. balance n. 平衡 【常用搭配】ecological balance 生态平衡；keep balance 保持平衡 例句：We must try our best to keep the balance of nature. 我们必须尽力保持自然的平衡。 Excessive hunting will break the ecological balance. 过度捕猎会打破生态平衡。 11. wildlife n. 野生动物；野生生物 例句：Wildlife depends on complete ecosystems to survive. 野生生物依靠完整的生态系统生存。 We have built many reserves to protect local wildlife. 我们建立了许多保护区保护当地野生生物。 12. survival n. 生存；存活 【常用搭配】survival of species 物种生存；ensure survival 保障生存 例句：Clean water and fresh air are important for human survival. 洁净的水和新鲜空气对人类生存至关重要。 Protecting forests helps the survival of all living things nearby. 保护森林有助于周边所有生物的存活。 13. population n. 种群数量；人口 【常用搭配】animal population 动物种群数量；increase population 增长数量 例句：The panda population has grown in recent years. 近年来大熊猫的种群数量有所增长。 The population of sea birds drops due to ocean pollution. 由于海洋污染，海鸟的种群数量有所下降。 14. damage n. 破坏；损害 【常用搭配】do damage to 对……造成破坏 例句：Illegal logging does great damage to rainforests. 非法砍伐对雨林造成极大破坏。 Light pollution causes damage to millions of birds every year. 光污染每年都会伤害数百万只鸟类。 15. development n. 发展 【常用搭配】social development 社会发展；rapid development 快速发展 例句：The rapid development of society affects natural balance. 社会的快速发展影响着自然平衡。 Green development is good for both humans and nature. 绿色发展对人类和自然都有益。 16. natural adj. 自然的；天然的 【常用搭配】natural world 自然界；natural resources 自然资源 例句：The natural world will recover without human disturbance. 没有人类干扰，自然界会慢慢恢复。 We should make good use of all natural resources. 我们要充分利用一切自然资源。 17. empty adj. 空旷的；空的 例句：The streets become empty when all human activities stop. 所有人类活动停止后，街道变得空旷无人。 The empty beach is quiet and full of natural beauty. 空旷的海滩静谧且充满自然之美。 18. amazing adj. 令人惊叹的 例句：The natural world has many amazing scenery and wonders. 自然界有许多令人惊叹的风景和奇观。 It is amazing that pandas have escaped from extinction. 令人惊叹的是，大熊猫摆脱了灭绝危机。 19. endangered adj. 濒危的 【常用搭配】endangered animals 濒危动物；endangered species 濒危物种 例句：Many endangered animals are well protected in national parks. 许多濒危动物在国家公园中得到妥善保护。 Blue whales were once highly endangered due to overfishing. 由于过度捕捞，蓝鲸曾一度濒临灭绝。 20. green adj. 绿色的；环保的 【常用搭配】green energy 绿色能源；green life 环保生活 例句：Green energy can reduce air pollution effectively. 绿色能源能有效减少空气污染。 More people choose a green life to protect nature. 越来越多人选择环保生活来保护自然。 二、核心短语 1. depend on 依靠；依赖 例句：All living things depend on the balanced ecosystem to live. 所有生物都依靠平衡的生态系统生存。 Small animals depend on natural sounds to find each other. 小动物依靠自然声响寻找同伴。 2. cut down 砍伐；砍倒 例句：People cut down too many trees and destroy forest homes. 人们砍伐大量树木，破坏了森林家园。 Without humans, no trees will be cut down in the wild. 没有人类，野外就不会有树木被砍伐。 3. get along with 与……相处；和谐共处 例句：We need to learn how to get along with nature well. 我们需要学会如何与自然和谐共处。 Animals get along with each other in a balanced ecosystem. 在平衡的生态系统中，动物们彼此和谐共存。 4. in number 在数量上 例句：Wild animals will increase greatly in number without human disturbance. 没有人类干扰，野生动物的数量会大幅增长。 Pandas have grown a lot in number in the past ten years. 过去十年，大熊猫的数量大幅增加。 5. take back 收回；夺回（空间） 例句：Forests will take back the space that humans once occupied. 森林会重新占据人类曾经占据的空间。 Nature takes back its land when human activities disappear. 人类活动消失后，自然会收回自己的土地。 6. hide behind 隐藏在……之后 例句：Many natural wonders hide behind thick smog every day. 每天都有许多自然奇观被浓重的雾霾掩盖。 The beauty of the lake hides behind water pollution. 湖水的美景被水污染掩盖了。 7. care for 关爱；呵护 例句：Fast social development makes people care less for nature. 社会的快速发展让人们愈发忽视对自然的呵护。 We should care for every living thing on the earth. 我们应该关爱地球上的每一个生命。 8. make great efforts 付出巨大努力 例句：The government makes great efforts to protect wild pandas. 政府为保护野生大熊猫付出了巨大努力。 Local people make great efforts to improve the environment. 当地居民全力改善生态环境。 9. play an important role 发挥重要作用 例句：Environmental education plays an important role in nature protection. 环保教育在自然保护中发挥着重要作用。 Forest protection plays an important role in ecological balance. 森林保护对生态平衡至关重要。 10. return to 归还；回归 例句：Farmers return part of farmland to forests for pandas. 农民将部分农田退耕还林，为大熊猫提供栖息地。 Wild animals will return to their original homes soon. 野生动物很快就会回归原本的家园。 11. slow global warming 减缓全球变暖 例句：Using green energy can help slow global warming effectively. 使用绿色能源能有效减缓全球变暖。 Planting more trees is a good way to slow global warming. 多植树是减缓全球变暖的有效方式。 12. cry out for help 亟待保护；迫切求助 例句：The oceans which are polluted are crying out for help. 被污染的海洋亟待保护。 The disappearing rain forests are crying out for help. 不断消失的雨林急需保护。 13. fixed period 固定时段；固定时期 例句：People can only fish in the sea during a fixed period every year. 人们每年只能在固定时段出海捕鱼。 We protect birds during their breeding fixed period. 我们在鸟类固定的繁殖期对其进行保护。 14. illegal logging 非法砍伐 例句：Illegal logging is the main cause of rainforest disappearance. 非法砍伐是雨林消失的主要原因。 The new invention helps stop illegal logging in forests. 这项新发明有助于制止森林中的非法砍伐。 15. environmental protection 环境保护 例句：Everyone should learn basic knowledge of environmental protection. 每个人都应该学习基础的环保知识。 Environmental protection benefits all living things on the earth. 环境保护惠及地球上所有生物。 16. living area 栖息地；生活区 例句：We expand the living area for endangered wild animals. 我们为濒危野生动物扩大栖息地。 Human development takes up many animals' living areas. 人类发展侵占了许多动物的栖息地。 17. natural wonder 自然奇观 例句：Clean air makes all natural wonders show their true beauty. 洁净的空气让所有自然奇观展现出原本的美貌。 Many natural wonders are hidden by industrial pollution. 许多自然奇观被工业污染掩盖。 18. ecological balance 生态平衡 例句：Small changes will affect the whole ecological balance. 微小的变化都会影响整体的生态平衡。 Protecting single species helps keep the ecological balance. 保护单一物种有助于维持生态平衡。 19. wild animal 野生动物 例句：Wild animals play key roles in the ecosystem cycle. 野生动物在生态系统循环中承担关键作用。 We should never hurt or catch wild animals casually. 我们绝不可以随意伤害、捕捉野生动物。 20. suffer from 遭受；承受……之苦 例句：Many sea creatures suffer from serious water pollution. 许多海洋生物遭受严重水污染的危害。 Some land areas suffer from water shortages every year. 部分陆地地区每年都会遭遇水资源短缺。 21. break balance 打破平衡 例句：Overhunting will easily break the balance of nature. 过度捕猎很容易打破自然的平衡。 Blind development will break the original ecological balance. 盲目发展会打破原有的生态平衡。 22. recover slowly 缓慢恢复 例句：The damaged ecosystem will recover slowly without human disturbance. 遭到破坏的生态系统会在无人类干扰的情况下缓慢恢复。 Forests recover slowly after large-scale felling. 大规模砍伐后的森林恢复速度十分缓慢。 23. set up 建立；设立 例句：China has set up many reserves for wild pandas. 中国为野生大熊猫设立了许多保护区。 People set up research centres to study ecological changes. 人们建立研究中心，监测生态变化。 24. provide...with... 为……提供…… 例句：Forests provide wild animals with food and shelter. 森林为野生动物提供食物和栖息地。 We provide pandas with enough bamboo and living space. 我们为大熊猫提供充足的竹子和生存空间。 25. at the cost of 以……为代价 例句：We should not develop economy at the cost of nature. 我们不能以牺牲自然为代价发展经济。 Fast urbanization comes at the cost of wild living areas. 快速城市化以野生动物栖息地为代价。 三、核心句型 1. We depend on each other in the ecosystem of the earth. 我们在地球的生态系统中相互依存。 2. It is no surprise that animals would soon increase in number without humans. 没有人类，动物的数量很快就会增长，这不足为奇。 3. Without humans, the noise would drop greatly as traffic stops. 没有人类，交通停运，噪音会大幅降低。 4. Forests would take back the space that humans now live in. 森林将会夺回人类目前居住的土地。 5. Cleaner air and water would allow natural wonders to present all their beauty. 洁净的空气和水源会让自然奇观尽显芳华。 6. The rapid development of human society has made us care less for nature. 人类社会的快速发展让我们愈发漠视自然。 7. We can't wait till imagination becomes reality. 我们不能坐等想象中的场景变成现实。 8. We need to think more about how we get along with nature. 我们需要更多地思考如何与自然和谐共处。 9. Let us permit nature to have her way. 让我们顺应自然的规律。 10. The rainforest is an ecosystem that is important to us all. 雨林是对我们所有人都至关重要的生态系统。 11. Pollution is also a big problem for the oceans. 污染也是海洋面临的一大难题。 12. There is no time to waste. We must act now to protect the ecosystem. 时不我待，我们必须立刻行动保护生态系统。 13. Protecting pandas is helpful to the survival of a whole ecosystem. 保护大熊猫有助于整个生态系统的存续。 14. Local people's increased environmental awareness plays a key protective role. 当地民众不断提升的环保意识起到了关键的保护作用。 15. Many species are disappearing because of human harmful activities. 由于人类的有害活动，许多物种正在消失。 16. Green energy produces little or no greenhouse gases. 绿色能源几乎不产生温室气体。 17. Overfishing is the main cause of the reduction of sea animals. 过度捕捞是海洋生物数量减少的主要原因。 18. Every small action of protection can change the ecological situation. 每一个微小的环保行动都能改变生态现状。 19. The recovery of forests benefits all surrounding living things. 森林的恢复惠及周边所有生物。 20. Human efforts can effectively keep the ecosystem balanced. 人类的努力能够有效维持生态系统的平衡。 ◇Part 02 语法梳理 that/which引导的限制性定语从句 定语从句是修饰名词或代词的从句，被修饰的词称为先行词。本单元重点掌握 that 和which 引导的限制性定语从句，用于修饰事物，对先行词进行限定、说明，不可省略，是九年级核心语法考点。 1.that 引导定语从句 适用范围：可修饰所有事物，通用性最强，是考试高频考点。 句法功能：在从句中可作主语或宾语；作宾语时可省略，作主语时不可省略。 注：只能用that，不能用which的情况： ① 先行词被all, every, no, much, little, few等不定代词修饰时； ② 先行词被最高级、序数词修饰时； ③ 先行词同时包含人和物时。 2.which 引导定语从句 适用范围：仅修饰事物，不可修饰人。 句法功能：在从句中可作主语或宾语；作宾语时可省略，作主语时不可省略。 注：只能用which，不能用that的情况： ① 介词提前置于关系代词前时； ② 非限制性定语从句中（九年级重点掌握限制性即可）。 【例句】 （that作主语）Streets, beaches and parks that are usually full of people remain empty.平日里人来人往的街道、海滩和公园变得空旷无人。 （which作主语）Without pollution, the natural wonders which have been hidden behind smog for years would appear again.没有了污染，多年来被雾霾掩盖的自然奇观将会重现。 that作宾语，可省略）The forest that we protect is home to many animals.我们保护的这片森林是许多动物的家园。 （which作宾语，可省略）This is the green energy which we use to reduce pollution.这就是我们用来减少污染的绿色能源。 （只能用that）All things that we do can influence the ecological balance.我们做的所有事都会影响生态平衡。 【易错点】 1. 先行词是事物时，that可通用，which有使用限制； 2. 关系代词作从句主语时，从句谓语动词单复数需与先行词保持一致； 3. 限制性定语从句无逗号分隔，是本单元唯一考查形式。 ◇Part 03 拓展深化 提｜升｜练｜习 一、单项选择 从每题所给的A、B、C、D四个选项中选出最佳答案。 1. Many wild animals will ______ in number if human disturbance disappears. A. drop B. increase C. disappear D. harm 2. People cut down too many trees, which breaks the ______ of the ecosystem. A. balance B. pollution C. population D. survival 3. The beautiful natural views ______ behind thick smog for many years. A. hide B. are hidden C. have been hidden D. hid 4. We should learn how to ______ well with nature to protect our earth. A. get along B. get up C. get off D. get out 5. The giant panda was moved from "endangered" to "______" on the IUCN Red List. A. dangerous B. vulnerable C. wild D. precious 6. Farmers returned farmland to forests to ______ more living space for pandas. A. provide B. prevent C. protect D. produce 7. ______ is a serious problem that damages the earth's ecological environment. A. Development B. Pollution C. Education D. Invention 8. The forest guards try their best to stop ______ in the rainforests. A. logging B. shopping C. fishing D. farming 9. Oceans, ______ cover over 70% of the earth's surface, are facing great danger. A. that B. which C. who D. what 10. Green energy ______ little or no greenhouse gases is good for the environment. A. which produces B. who produces C. produce D. producing 11. Too much traffic noise makes it hard for animals to ______ with each other. A. connect B. communicate C. compare D. compete 12. The book ______ Alan Weisman wrote is very educational for environmental protection. A. that B. what C. where D. when 13. Local people have a better ______ of environmental protection now. A. understanding B. difficulty C. difference D. discussion 14. Overfishing is one of the main ______ of sea animals' disappearance. A. results B. causes C. reasons D. effects 15. We cannot ______ the world and start over, so we must protect it well. A. cancel B. change C. choose D. challenge 16. Wetlands and grasslands are important natural ______ on the earth. A. ecosystems B. populations C. researches D. achievements 17. The solar panel is an important ______ of the forest protection invention. A. component B. instrument C. tool D. device 18. Protecting pandas helps the ______ of the whole forest ecosystem. A. survival B. growth C. increase D. development 19. Many ______ species live in the rainforest, so we need to protect it. A. wild B. daily C. local D. natural 20. The temperature rise ______ many sea animals' living conditions. A. harms B. improves C. supports D. balances 21. The park ______ we visited last week is a giant panda protection base. A. what B. which C. who D. whose 22. We should ______ nature to have her way instead of changing it blindly. A. permit B. allow C. promise D. agree 23. The number of wild pandas has ______ greatly in recent years. A. increased B. dropped C. disappeared D. doubled 24. Rubbish from land is the main ______ of ocean pollution. A. source B. result C. problem D. mistake 25. Environmental ______ has made more people realize the importance of protecting nature. A. protection B. production C. progress D. project 答案：1.B 2.A 3.C 4.A 5.B 6.A 7.B 8.A 9.B 10.A 11.B 12.A 13.A 14.B 15.A 16.A 17.D 18.A 19.A 20.A 21.B 22.A 23.A 24.A 25.A 解析： 1.考查单元核心动词词义辨析。increase 意为“增加、增长”；drop 下降，disappear 消失，harm 伤害。根据课文内容，人类活动消失后，动物数量会增加，故选B。 2.考查名词固定搭配。ecological balance 为单元核心短语，意为“生态平衡”。句意：人类乱砍树木破坏了生态平衡，balance 平衡，其余选项不符合语境，故选A。 3.考查定语从句时态与被动语态。句中含有for many years，需用现在完成时；natural wonders 和hide 是被动关系，意为“被雾霾遮盖”，故选现在完成时的被动语态have been hidden，选C。 4.考查单元固定短语。get along with 意为“与……相处、和睦共处”，是课文原句核心短语。句意：我们要学会与自然和谐共处，其余短语无此含义，选A。 5.考查单元核心形容词词义。vulnerable 意为“易危的”，是大熊猫保护等级专用词汇，区别于endangered（濒危的），为课文重点词汇，选B。 6.考查动词词义辨析与固定搭配。provide sth. for sb. 意为“为某人提供某物”，为单元重点搭配。农民退耕还林是为熊猫提供生存空间，选A。 7.考查名词词义辨析。pollution 污染，是破坏生态环境的核心因素，贴合单元生态保护主题，其余词汇与语境不符，选B。 8.考查单元名词词义。logging 意为“伐木作业”，课文重点讲解雨林伐木破坏生态，护林员的职责是阻止伐木，选A。 9.考查非限制性定语从句。先行词是oceans（事物），且逗号后不能用that，只能用which引导，是本单元核心语法点，选B。 10.考查限制性定语从句。先行词是green energy（事物），关系代词用which，从句谓语动词用单数形式produces，符合语法规则，选A。 11.考查动词词义辨析。communicate with 意为“相互交流、沟通”，课文提到噪音让动物无法彼此联络，选B。 12.考查定语从句。先行词是the book（事物），关系代词用that，在从句中作宾语，what不能引导定语从句，选A。 13.考查固定搭配。have a better understanding of 意为“更好地理解……”，是课文重点短语，选A。 14.考查名词词义辨析。cause 侧重“导致某事发生的起因”，result/effect 侧重“结果”。过度捕捞是海洋动物消失的主要起因，选B。 15.考查单元动词词义。cancel 意为“取消、作废”，课文原句The world isn't a game. We can't cancel it and start over，选A。 16.考查单元核心名词。ecosystem 生态系统，湿地、草原都是地球重要的生态系统，贴合单元主题，选A。 17.考查名词词义辨析。device 意为“装置、设备”，文中太阳能板是雨林保护发明的重要装置，贴合听力文本内容，选D。 18.考查名词词义。survival 意为“生存、存续”，课文核心观点：保护熊猫有利于整个生态系统的存续，选A。 19.考查单元形容词。wild 野生的，wild species 野生物种，是单元高频搭配，雨林栖息大量野生物种，选A。 20.考查动词词义。harm 意为“伤害、损害”，气温上升会损害海洋动物的生存环境，贴合全球变暖主题，选A。 21.考查定语从句。先行词是the park（事物），关系代词用which，在从句中作宾语，选B。 22.考查单元重点动词。permit 意为“容许、任由”，对应课文名言let us permit nature to have her way，为固定原文词汇，选A。 23.考查动词词义。increase 数量增长，课文提到经过保护，野生大熊猫数量大幅增加，选A。 24.考查名词词义。source 意为“来源”，课文指出80%以上的海洋污染来自陆地，陆地垃圾是海洋污染的主要来源，选A。 25.考查单元核心名词短语。environmental protection 环境保护，是单元主题核心词汇，选A。 二、根据句意，用括号内所给单词的适当形式填空。 1. Without human activities, animal numbers will have a great ______ (increase). 2. Too much human activity breaks the ecological ______ (balanced) of the earth. 3. The ______ (pollute) from factories makes the air dirty around us. 4. We should try our best ______ (protect) all kinds of wild animals. 5. The number of wild pandas has ______ (rise) in the past few years. 6. Local people show a deep ______ (understand) of environmental protection now. 7. This invention is very ______ (help) for rainforest protection. 8. Many sea animals are in danger because of ______ (overfish). 9. The forest ______ (guard) work day and night to stop illegal logging. 10. Human ______ (develop) brings both convenience and environmental problems. 11. We need to improve the living ______ (condition) of wild animals. 12. The natural scenery ______ (hide) by smog will appear without pollution. 13. Farmers are ______ (return) farmland to forests to protect pandas. 14. China has made great ______ (effort) to protect ecological balance. 15. The rainforest is home to ______ (thousand) of wild species. 16. We should allow nature ______ (show) its original beauty. 17. Light pollution causes the ______ (die) of millions of birds every year. 18. The ______ (survive) of wild animals depends on a good ecosystem. 19. This kind of green energy produces few ______ (greenhouse) gases. 20. The panda is a ______ (nation) treasure of China. 21. Illegal logging is ______ (harm) to the rainforest ecosystem. 22. We can take many ______ (measure) to protect ocean resources. 23. The ecosystem will become ______ (balance) with less human damage. 24. More ______ (research) centres are built to protect rare animals. 25. People have realized the ______ (important) of protecting nature. 答案：1. increase 2. balance 3. pollution 4. to protect 5. risen 6. understanding 7. helpful 8. overfishing 9. guards 10. development 11. conditions 12. hidden 13. returning 14. efforts 15. thousands 16. to show 17. death 18. survival 19. greenhouse 20. national 21. harmful 22. measures 23. balanced 24. research 25. importance 解析： 1.考查词性转换。great 是形容词，后接名词，increase 可作名词，意为“增长、增加”，a great increase 表示“大幅增长”，故填increase。 2.考查固定名词搭配。ecological balance 为单元核心短语，意为“生态平衡”，balanced 是形容词，此处需用名词balance，故填balance。 3.考查词性转换。定冠词the后接名词，pollute（动词，污染）的名词形式是pollution，the pollution from factories 表示“工厂的污染”，故填pollution。 4.考查固定句型。try one's best to do sth. 是固定搭配，意为“尽某人最大努力做某事”，故填to protect。 5.考查现在完成时。has+过去分词构成现在完成时，rise 的过去分词是risen，此处表示熊猫数量已经增长，故填risen。 6.考查词性转换。形容词deep后接名词，understand（动词，理解）的名词形式是understanding，a deep understanding 表示“深刻的理解”，故填understanding。 7.考查词性转换。be动词后接形容词作表语，help（动词，帮助）的形容词是helpful，be helpful for 意为“对……有帮助”，故填helpful。 8.考查词性转换。because of 后接名词/动名词，overfish（动词，过度捕捞）的动名词形式是overfishing，故填overfishing。 9.考查名词单复数。谓语动词work为原形，说明主语是复数，guard（护林员）的复数形式是guards，故填guards。 10.考查词性转换。human 后接名词作主语，develop（动词，发展）的名词是development，human development 意为“人类发展”，故填development。 11.考查名词单复数。living conditions 为固定复数搭配，意为“生存环境、生活条件”，故填conditions。 12.考查过去分词作后置定语。scenery 和hide是被动关系，hidden by smog 作后置定语，意为“被雾霾遮盖的风景”，故填hidden。 13.考查现在进行时。are+现在分词构成现在进行时，return的现在分词是returning，此处表示农民正在退耕还林，故填returning。 14.考查固定短语。make great efforts 为单元核心短语，意为“付出巨大努力”，effort需用复数形式，故填efforts。 15.考查数词固定搭配。thousands of 为固定短语，意为“成千上万的”，表示模糊数量，故填thousands。 16.考查固定搭配。allow sb./sth. to do sth. 意为“允许某物做某事”，为固定用法，故填to show。 17.考查词性转换。the后接名词，die（动词，死亡）的名词形式是death，the death of birds 表示“鸟类的死亡”，故填death。 18.考查词性转换。the后接名词作主语，survive（动词，生存）的名词是survival，the survival of wild animals 意为“野生动物的生存”，故填survival。 19.考查固定名词搭配。greenhouse gases 为固定短语，意为“温室气体”，greenhouse此处作定语用单数，故填greenhouse。 20.考查词性转换。名词treasure前用形容词修饰，nation（名词，国家）的形容词是national，national treasure 意为“国宝”，故填national。 21.考查固定搭配。be harmful to 为单元核心短语，意为“对……有害”，故填harmful。 22.考查名词单复数。many后接可数名词复数，measure（措施）的复数形式是measures，故填measures。 23.考查词性转换。become是系动词，后接形容词作表语，balance的形容词是balanced，意为“平衡的”，故填balanced。 24.考查名词作定语。research centre 为固定搭配，意为“研究中心”，research作定语用单数，故填research。 25.考查词性转换。the后接名词，important（形容词，重要的）的名词是importance，the importance of... 意为“……的重要性”，故填importance。 三、根据汉语提示完成句子，每空一词。 1. 我们应该学会与自然和睦相处，保护生态平衡。 We should learn to ______ ______ ______ nature and protect the ecological balance. 2. 没有人类的污染，大自然的美景将会重新展现。 ______ human ______, the beauty of nature will appear again. 3. 中国政府为保护野生大熊猫付出了巨大努力。 The Chinese government has ______ ______ ______ to protect wild giant pandas. 4. 这片森林是多种野生动植物的家园。 This forest is ______ ______ many kinds of wild animals and plants. 5. 过度捕捞正在严重危害海洋生态系统。 Overfishing is ______ ______ ______ the marine ecosystem seriously. 6. 我们不能等待问题成真，必须立刻采取行动。 We can't wait for problems to ______ ______, and we must take action at once. 7. 绿色能源几乎不产生温室气体，有利于减缓全球变暖。 Green energy produces few ______ ______ and helps slow down global warming. 8. 当地居民退耕还林，为熊猫提供了更多食物和空间。 Local people returned farmland to forests to ______ more food and space ______ pandas. 9. 保护熊猫无疑有助于整个生态系统的存续。 Protecting pandas is ______ ______ ______ the survival of the whole ecosystem. 10. 越来越多的人开始理解环境保护的重要性。 More and more people begin to ______ ______ ______ of environmental protection. 11. 雨林中非法伐木很难被人们察觉。 Illegal logging in rainforests is hard for people to ______ ______. 12. 人类的快速发展给自然留下了诸多痕迹。 The rapid development of humans ______ many ______ on nature. 13. 安静的环境能让动物更容易找到同伴、组建种群。 A quiet environment makes it easier for animals to ______ ______ ______ and form families. 14. 我们应当任由自然顺应其规律发展。 We should ______ nature to ______ ______ way. 15. 海洋覆盖了地球表面的百分之七十以上。 Oceans ______ ______ 70% of the earth's surface. 16. 许多海洋动物正遭受全球变暖带来的危害。 Many sea animals are ______ ______ global warming. 17. 这个保护装置可以有效阻止树木被砍伐。 This protection device can stop trees from ______ ______ ______ effectively. 18. 生态平衡对地球上所有生物的生存至关重要。 Ecological balance is vital for the ______ ______ all living things on earth. 19. 经过多年保护，野生动物的数量大幅增加。 After years of protection, the ______ ______ wild animals has increased greatly. 20. 我们需要重新思考人与自然的关系。 We need to rethink the ______ ______ humans and nature. 答案： 1. get along with 2. Without; pollution 3. made great efforts 4. home to 5. doing harm to 6. become reality 7. greenhouse gases 8. provide; for 9. undoubtedly helpful to 10. understand the importance 11. notice it 12. leaves; marks 13. find each other 14. permit; have her 15. cover over 16. suffering from 17. being cut down 18. survival of 19. population of 20. relationship between 解析： 1. 考查单元核心固定短语。get along with 意为“与……和睦相处”，learn to do sth. 后接动词原形，为课文原句核心搭配。 2. 考查介词与名词用法。without 意为“没有”，后接名词pollution（污染），贴合课文无人类污染则美景重现的语境。 3. 考查固定短语与时态。make great efforts 意为“付出巨大努力”，句子为现在完成时，make需变为过去分词made。 4. 考查固定搭配。be home to 为单元重点短语，意为“是……的家园”，用于描述生态栖息地。 5. 考查固定短语与时态。do harm to 意为“对……有害”，句子为现在进行时，do变为doing。 6. 考查课文固定短语。become reality 意为“成为现实”，对应原文We can't wait till imagination becomes reality。 7. 考查单元核心名词短语。greenhouse gases 意为“温室气体”，是环保主题高频词汇，为课文原词。 8. 考查固定搭配。provide sth. for sb. 意为“为某人提供某物”，是单元重点动词搭配。 9. 考查固定句式。be helpful to 意为“对……有帮助”，undoubtedly（无疑地）为课文副词，修饰整个短语。 10. 考查固定短语。understand the importance of... 意为“理解……的重要性”，贴合单元主旨。 11. 考查固定句型。sth. is hard to do 为固定结构，notice it 指代前文的非法伐木行为，贴合听力文本内容。 12. 考查固定短语与时态。leave marks on 意为“在……留下痕迹”，主语为单数，谓语动词用第三人称单数leaves。 13. 考查课文原句短语。find each other 意为“彼此寻觅、相互聚集”，对应文中动物繁衍的语境。 14. 考查课文名言原句。permit nature to have her way 为单元核心名句，意为“任由自然顺应其规律”。 15. 考查固定短语。cover over 意为“覆盖”，对应原文海洋覆盖地球表面的内容。 16. 考查固定短语与时态。suffer from 意为“遭受……的危害”，现在进行时用suffering from。 17. 考查固定搭配与被动语态。stop...from doing sth. 阻止……做某事，trees和cut down是被动关系，故用being cut down。 18. 考查名词所有格搭配。the survival of... 意为“……的生存”，of表所属关系，贴合生态保护主题。 19. 考查固定搭配。the population of... 意为“……的数量、种群”，是描述动植物数量的核心短语。 20. 考查名词搭配。the relationship between A and B 意为“A与B的关系”，between用于两者之间，贴合人与自然的关系主题。 $2026-2027学年上学期九年级英语单元巩固提升(外研版2024) Unit 5 A fine balance词汇语法 目录 第一部分 核心词句锁定基础 高效学习 第二部分 语法梳理深度优化 扫清盲区 第三部分 拓展深化用法演练 能力巩固 ◇Part 01 核心词句 背｜诵｜清｜单 Unit 5 单元核心词汇背诵清单 ( 1 / 2 )学科网（北京）股份有限公司 学科网（北京）股份有限公司 drop v.降低 tourist n.游客 ecosystem n.生态系统 balance v.(使)平稳,(使)保持平衡；n.平衡 smog n.烟雾 admire v.欣赏,观赏 mark n.痕迹;标记 farmland n.农田,耕地 rapid adj.快速的,迅速的 society n.社会 till conj.直到 cancel v.取消 permit v.允许;使成为可能 organisation n.组织,团体,机构 harm v.损害;危害;伤害 punishment n.惩罚手段;处罚 global adj.全球的,全世界的 overfishing n.过度捕捞 greenhouse n.温室,暖房 gas n.气,气体 control v.控制,限制 rubbish n.垃圾,废弃物 cartoonist n.漫画家;动画家 logging n.伐木 alarm n.警报;警报器 foreigner n.外国人 logo n.标识,标志,徽标 endangered adj.濒危的,濒于灭绝的 vulnerable adj.脆弱的;易受伤的 worldwide adv.世界各地 protection n.保护 environmental adj.自然环境的 population n.人口;动植物的总数 undoubtedly adv.毫无疑问地,确定无疑地 survival n.继续生存;幸存 默｜写｜清｜单 Unit 5 单元核心词汇默写清单 ____________ v.降低 ____________ n.游客 ____________ n.生态系统 ____________ v.(使)平稳,(使)保持平衡；n.平衡 ____________ n.烟雾 ____________ v.欣赏,观赏 ____________ n.痕迹;标记 ____________ n.农田,耕地 ____________ adj.快速的,迅速的 ____________ n.社会 ____________ conj.直到 ____________ v.取消 ____________ v.允许;使成为可能 ____________ n.组织,团体,机构 ____________ v.损害;危害;伤害 ____________ n.惩罚手段;处罚 ____________ adj.全球的,全世界的 ____________ n.过度捕捞 ____________ n.温室,暖房 ____________ n.气,气体 ____________ v.控制,限制 ____________ n.垃圾,废弃物 ____________ n.漫画家;动画家 ____________ n.伐木 ____________ n.警报;警报器 ____________ n.外国人 ____________ n.标识,标志,徽标 ____________adj.濒危的,濒于灭绝的 ____________ adj.脆弱的;易受伤的 ____________ adv.世界各地 ____________ n.保护 ____________ adj.自然环境的 ____________ n.人口;动植物的总数 ____________ adv.毫无疑问地,确定无疑地 ____________ n.继续生存;幸存 核｜心｜强｜化 一、核心词汇 1. disappear v. 消失；不复存在 【常用搭配】disappear from 从……消失 例句：Many wild animals disappear from their living areas because of pollution. 许多野生动物因污染从栖息地消失。 The noise of traffic disappeared gradually at night. 夜晚，车流的噪音逐渐消失。 2. increase v. 增加；增长 【常用搭配】increase in 在……方面增长；increase rapidly 快速增长 例句：The number of animals will increase if the environment gets better. 如果环境变好，动物的数量将会增加。 Pollution has increased greatly in some industrial areas. 一些工业区的污染大幅加剧。 3. drop v. 下降；降低；落下 【常用搭配】drop greatly 大幅下降；drop down 落下 例句：The noise level drops greatly when human activities stop. 人类活动停止后，噪音分贝会大幅下降。 The temperature will drop in winter in most areas. 大多数地区的冬季气温会下降。 4. harm v. 伤害；损害 【常用搭配】harm the environment 破坏环境；harm wildlife 伤害野生动物 例句：Cutting down too many trees will harm the balance of the ecosystem. 过度砍伐树木会破坏生态系统的平衡。 Ocean pollution harms thousands of sea animals every year. 海洋污染每年都会伤害成千上万的海洋生物。 5. protect v. 保护 【常用搭配】protect...from... 保护……免受……伤害 例句：We should protect forests from being destroyed. 我们应该保护森林免遭破坏。 The government takes measures to protect endangered animals. 政府采取措施保护濒危动物。 6. survive v. 生存；存活 【常用搭配】survive in 在……中生存；survive from 从……中幸存 例句：Many rare plants can only survive in wetland ecosystems. 许多珍稀植物只能在湿地生态系统中存活。 Some animals fail to survive the terrible environmental changes. 一些动物无法在恶劣的环境变化中生存。 7. develop v. 发展；成长 【常用搭配】develop rapidly 快速发展；develop a balance 形成平衡 例句：Human society develops rapidly at the cost of nature. 人类社会以牺牲自然为代价快速发展。 Forests develop well when there is no human damage. 没有人类破坏时，森林会良性生长。 8. ecosystem n. 生态系统 例句：Every living thing plays a role in the earth's ecosystem. 每种生物都在地球生态系统中发挥作用。 Human activities have a huge influence on natural ecosystems. 人类活动对自然生态系统有巨大影响。 9. pollution n. 污染 【常用搭配】environmental pollution 环境污染；ocean pollution 海洋污染 例句：Air pollution hides many natural wonders in the world. 空气污染掩盖了世间许多自然奇观。 Most ocean pollution comes from human land activities. 大部分海洋污染来自人类的陆地活动。 10. balance n. 平衡 【常用搭配】ecological balance 生态平衡；keep balance 保持平衡 例句：We must try our best to keep the balance of nature. 我们必须尽力保持自然的平衡。 Excessive hunting will break the ecological balance. 过度捕猎会打破生态平衡。 11. wildlife n. 野生动物；野生生物 例句：Wildlife depends on complete ecosystems to survive. 野生生物依靠完整的生态系统生存。 We have built many reserves to protect local wildlife. 我们建立了许多保护区保护当地野生生物。 12. survival n. 生存；存活 【常用搭配】survival of species 物种生存；ensure survival 保障生存 例句：Clean water and fresh air are important for human survival. 洁净的水和新鲜空气对人类生存至关重要。 Protecting forests helps the survival of all living things nearby. 保护森林有助于周边所有生物的存活。 13. population n. 种群数量；人口 【常用搭配】animal population 动物种群数量；increase population 增长数量 例句：The panda population has grown in recent years. 近年来大熊猫的种群数量有所增长。 The population of sea birds drops due to ocean pollution. 由于海洋污染，海鸟的种群数量有所下降。 14. damage n. 破坏；损害 【常用搭配】do damage to 对……造成破坏 例句：Illegal logging does great damage to rainforests. 非法砍伐对雨林造成极大破坏。 Light pollution causes damage to millions of birds every year. 光污染每年都会伤害数百万只鸟类。 15. development n. 发展 【常用搭配】social development 社会发展；rapid development 快速发展 例句：The rapid development of society affects natural balance. 社会的快速发展影响着自然平衡。 Green development is good for both humans and nature. 绿色发展对人类和自然都有益。 16. natural adj. 自然的；天然的 【常用搭配】natural world 自然界；natural resources 自然资源 例句：The natural world will recover without human disturbance. 没有人类干扰，自然界会慢慢恢复。 We should make good use of all natural resources. 我们要充分利用一切自然资源。 17. empty adj. 空旷的；空的 例句：The streets become empty when all human activities stop. 所有人类活动停止后，街道变得空旷无人。 The empty beach is quiet and full of natural beauty. 空旷的海滩静谧且充满自然之美。 18. amazing adj. 令人惊叹的 例句：The natural world has many amazing scenery and wonders. 自然界有许多令人惊叹的风景和奇观。 It is amazing that pandas have escaped from extinction. 令人惊叹的是，大熊猫摆脱了灭绝危机。 19. endangered adj. 濒危的 【常用搭配】endangered animals 濒危动物；endangered species 濒危物种 例句：Many endangered animals are well protected in national parks. 许多濒危动物在国家公园中得到妥善保护。 Blue whales were once highly endangered due to overfishing. 由于过度捕捞，蓝鲸曾一度濒临灭绝。 20. green adj. 绿色的；环保的 【常用搭配】green energy 绿色能源；green life 环保生活 例句：Green energy can reduce air pollution effectively. 绿色能源能有效减少空气污染。 More people choose a green life to protect nature. 越来越多人选择环保生活来保护自然。 二、核心短语 1. depend on 依靠；依赖 例句：All living things depend on the balanced ecosystem to live. 所有生物都依靠平衡的生态系统生存。 Small animals depend on natural sounds to find each other. 小动物依靠自然声响寻找同伴。 2. cut down 砍伐；砍倒 例句：People cut down too many trees and destroy forest homes. 人们砍伐大量树木，破坏了森林家园。 Without humans, no trees will be cut down in the wild. 没有人类，野外就不会有树木被砍伐。 3. get along with 与……相处；和谐共处 例句：We need to learn how to get along with nature well. 我们需要学会如何与自然和谐共处。 Animals get along with each other in a balanced ecosystem. 在平衡的生态系统中，动物们彼此和谐共存。 4. in number 在数量上 例句：Wild animals will increase greatly in number without human disturbance. 没有人类干扰，野生动物的数量会大幅增长。 Pandas have grown a lot in number in the past ten years. 过去十年，大熊猫的数量大幅增加。 5. take back 收回；夺回（空间） 例句：Forests will take back the space that humans once occupied. 森林会重新占据人类曾经占据的空间。 Nature takes back its land when human activities disappear. 人类活动消失后，自然会收回自己的土地。 6. hide behind 隐藏在……之后 例句：Many natural wonders hide behind thick smog every day. 每天都有许多自然奇观被浓重的雾霾掩盖。 The beauty of the lake hides behind water pollution. 湖水的美景被水污染掩盖了。 7. care for 关爱；呵护 例句：Fast social development makes people care less for nature. 社会的快速发展让人们愈发忽视对自然的呵护。 We should care for every living thing on the earth. 我们应该关爱地球上的每一个生命。 8. make great efforts 付出巨大努力 例句：The government makes great efforts to protect wild pandas. 政府为保护野生大熊猫付出了巨大努力。 Local people make great efforts to improve the environment. 当地居民全力改善生态环境。 9. play an important role 发挥重要作用 例句：Environmental education plays an important role in nature protection. 环保教育在自然保护中发挥着重要作用。 Forest protection plays an important role in ecological balance. 森林保护对生态平衡至关重要。 10. return to 归还；回归 例句：Farmers return part of farmland to forests for pandas. 农民将部分农田退耕还林，为大熊猫提供栖息地。 Wild animals will return to their original homes soon. 野生动物很快就会回归原本的家园。 11. slow global warming 减缓全球变暖 例句：Using green energy can help slow global warming effectively. 使用绿色能源能有效减缓全球变暖。 Planting more trees is a good way to slow global warming. 多植树是减缓全球变暖的有效方式。 12. cry out for help 亟待保护；迫切求助 例句：The oceans which are polluted are crying out for help. 被污染的海洋亟待保护。 The disappearing rain forests are crying out for help. 不断消失的雨林急需保护。 13. fixed period 固定时段；固定时期 例句：People can only fish in the sea during a fixed period every year. 人们每年只能在固定时段出海捕鱼。 We protect birds during their breeding fixed period. 我们在鸟类固定的繁殖期对其进行保护。 14. illegal logging 非法砍伐 例句：Illegal logging is the main cause of rainforest disappearance. 非法砍伐是雨林消失的主要原因。 The new invention helps stop illegal logging in forests. 这项新发明有助于制止森林中的非法砍伐。 15. environmental protection 环境保护 例句：Everyone should learn basic knowledge of environmental protection. 每个人都应该学习基础的环保知识。 Environmental protection benefits all living things on the earth. 环境保护惠及地球上所有生物。 16. living area 栖息地；生活区 例句：We expand the living area for endangered wild animals. 我们为濒危野生动物扩大栖息地。 Human development takes up many animals' living areas. 人类发展侵占了许多动物的栖息地。 17. natural wonder 自然奇观 例句：Clean air makes all natural wonders show their true beauty. 洁净的空气让所有自然奇观展现出原本的美貌。 Many natural wonders are hidden by industrial pollution. 许多自然奇观被工业污染掩盖。 18. ecological balance 生态平衡 例句：Small changes will affect the whole ecological balance. 微小的变化都会影响整体的生态平衡。 Protecting single species helps keep the ecological balance. 保护单一物种有助于维持生态平衡。 19. wild animal 野生动物 例句：Wild animals play key roles in the ecosystem cycle. 野生动物在生态系统循环中承担关键作用。 We should never hurt or catch wild animals casually. 我们绝不可以随意伤害、捕捉野生动物。 20. suffer from 遭受；承受……之苦 例句：Many sea creatures suffer from serious water pollution. 许多海洋生物遭受严重水污染的危害。 Some land areas suffer from water shortages every year. 部分陆地地区每年都会遭遇水资源短缺。 21. break balance 打破平衡 例句：Overhunting will easily break the balance of nature. 过度捕猎很容易打破自然的平衡。 Blind development will break the original ecological balance. 盲目发展会打破原有的生态平衡。 22. recover slowly 缓慢恢复 例句：The damaged ecosystem will recover slowly without human disturbance. 遭到破坏的生态系统会在无人类干扰的情况下缓慢恢复。 Forests recover slowly after large-scale felling. 大规模砍伐后的森林恢复速度十分缓慢。 23. set up 建立；设立 例句：China has set up many reserves for wild pandas. 中国为野生大熊猫设立了许多保护区。 People set up research centres to study ecological changes. 人们建立研究中心，监测生态变化。 24. provide...with... 为……提供…… 例句：Forests provide wild animals with food and shelter. 森林为野生动物提供食物和栖息地。 We provide pandas with enough bamboo and living space. 我们为大熊猫提供充足的竹子和生存空间。 25. at the cost of 以……为代价 例句：We should not develop economy at the cost of nature. 我们不能以牺牲自然为代价发展经济。 Fast urbanization comes at the cost of wild living areas. 快速城市化以野生动物栖息地为代价。 三、核心句型 1. We depend on each other in the ecosystem of the earth. 我们在地球的生态系统中相互依存。 2. It is no surprise that animals would soon increase in number without humans. 没有人类，动物的数量很快就会增长，这不足为奇。 3. Without humans, the noise would drop greatly as traffic stops. 没有人类，交通停运，噪音会大幅降低。 4. Forests would take back the space that humans now live in. 森林将会夺回人类目前居住的土地。 5. Cleaner air and water would allow natural wonders to present all their beauty. 洁净的空气和水源会让自然奇观尽显芳华。 6. The rapid development of human society has made us care less for nature. 人类社会的快速发展让我们愈发漠视自然。 7. We can't wait till imagination becomes reality. 我们不能坐等想象中的场景变成现实。 8. We need to think more about how we get along with nature. 我们需要更多地思考如何与自然和谐共处。 9. Let us permit nature to have her way. 让我们顺应自然的规律。 10. The rainforest is an ecosystem that is important to us all. 雨林是对我们所有人都至关重要的生态系统。 11. Pollution is also a big problem for the oceans. 污染也是海洋面临的一大难题。 12. There is no time to waste. We must act now to protect the ecosystem. 时不我待，我们必须立刻行动保护生态系统。 13. Protecting pandas is helpful to the survival of a whole ecosystem. 保护大熊猫有助于整个生态系统的存续。 14. Local people's increased environmental awareness plays a key protective role. 当地民众不断提升的环保意识起到了关键的保护作用。 15. Many species are disappearing because of human harmful activities. 由于人类的有害活动，许多物种正在消失。 16. Green energy produces little or no greenhouse gases. 绿色能源几乎不产生温室气体。 17. Overfishing is the main cause of the reduction of sea animals. 过度捕捞是海洋生物数量减少的主要原因。 18. Every small action of protection can change the ecological situation. 每一个微小的环保行动都能改变生态现状。 19. The recovery of forests benefits all surrounding living things. 森林的恢复惠及周边所有生物。 20. Human efforts can effectively keep the ecosystem balanced. 人类的努力能够有效维持生态系统的平衡。 ◇Part 02 语法梳理 that/which引导的限制性定语从句 定语从句是修饰名词或代词的从句，被修饰的词称为先行词。本单元重点掌握 that 和which 引导的限制性定语从句，用于修饰事物，对先行词进行限定、说明，不可省略，是九年级核心语法考点。 1.that 引导定语从句 适用范围：可修饰所有事物，通用性最强，是考试高频考点。 句法功能：在从句中可作主语或宾语；作宾语时可省略，作主语时不可省略。 注：只能用that，不能用which的情况： ① 先行词被all, every, no, much, little, few等不定代词修饰时； ② 先行词被最高级、序数词修饰时； ③ 先行词同时包含人和物时。 2.which 引导定语从句 适用范围：仅修饰事物，不可修饰人。 句法功能：在从句中可作主语或宾语；作宾语时可省略，作主语时不可省略。 注：只能用which，不能用that的情况： ① 介词提前置于关系代词前时； ② 非限制性定语从句中（九年级重点掌握限制性即可）。 【例句】 （that作主语）Streets, beaches and parks that are usually full of people remain empty.平日里人来人往的街道、海滩和公园变得空旷无人。 （which作主语）Without pollution, the natural wonders which have been hidden behind smog for years would appear again.没有了污染，多年来被雾霾掩盖的自然奇观将会重现。 that作宾语，可省略）The forest that we protect is home to many animals.我们保护的这片森林是许多动物的家园。 （which作宾语，可省略）This is the green energy which we use to reduce pollution.这就是我们用来减少污染的绿色能源。 （只能用that）All things that we do can influence the ecological balance.我们做的所有事都会影响生态平衡。 【易错点】 1. 先行词是事物时，that可通用，which有使用限制； 2. 关系代词作从句主语时，从句谓语动词单复数需与先行词保持一致； 3. 限制性定语从句无逗号分隔，是本单元唯一考查形式。 ◇Part 03 拓展深化 提｜升｜练｜习 一、单项选择 从每题所给的A、B、C、D四个选项中选出最佳答案。 1. Many wild animals will ______ in number if human disturbance disappears. A. drop B. increase C. disappear D. harm 2. People cut down too many trees, which breaks the ______ of the ecosystem. A. balance B. pollution C. population D. survival 3. The beautiful natural views ______ behind thick smog for many years. A. hide B. are hidden C. have been hidden D. hid 4. We should learn how to ______ well with nature to protect our earth. A. get along B. get up C. get off D. get out 5. The giant panda was moved from "endangered" to "______" on the IUCN Red List. A. dangerous B. vulnerable C. wild D. precious 6. Farmers returned farmland to forests to ______ more living space for pandas. A. provide B. prevent C. protect D. produce 7. ______ is a serious problem that damages the earth's ecological environment. A. Development B. Pollution C. Education D. Invention 8. The forest guards try their best to stop ______ in the rainforests. A. logging B. shopping C. fishing D. farming 9. Oceans, ______ cover over 70% of the earth's surface, are facing great danger. A. that B. which C. who D. what 10. Green energy ______ little or no greenhouse gases is good for the environment. A. which produces B. who produces C. produce D. producing 11. Too much traffic noise makes it hard for animals to ______ with each other. A. connect B. communicate C. compare D. compete 12. The book ______ Alan Weisman wrote is very educational for environmental protection. A. that B. what C. where D. when 13. Local people have a better ______ of environmental protection now. A. understanding B. difficulty C. difference D. discussion 14. Overfishing is one of the main ______ of sea animals' disappearance. A. results B. causes C. reasons D. effects 15. We cannot ______ the world and start over, so we must protect it well. A. cancel B. change C. choose D. challenge 16. Wetlands and grasslands are important natural ______ on the earth. A. ecosystems B. populations C. researches D. achievements 17. The solar panel is an important ______ of the forest protection invention. A. component B. instrument C. tool D. device 18. Protecting pandas helps the ______ of the whole forest ecosystem. A. survival B. growth C. increase D. development 19. Many ______ species live in the rainforest, so we need to protect it. A. wild B. daily C. local D. natural 20. The temperature rise ______ many sea animals' living conditions. A. harms B. improves C. supports D. balances 21. The park ______ we visited last week is a giant panda protection base. A. what B. which C. who D. whose 22. We should ______ nature to have her way instead of changing it blindly. A. permit B. allow C. promise D. agree 23. The number of wild pandas has ______ greatly in recent years. A. increased B. dropped C. disappeared D. doubled 24. Rubbish from land is the main ______ of ocean pollution. A. source B. result C. problem D. mistake 25. Environmental ______ has made more people realize the importance of protecting nature. A. protection B. production C. progress D. project 二、根据句意，用括号内所给单词的适当形式填空。 1. Without human activities, animal numbers will have a great ______ (increase). 2. Too much human activity breaks the ecological ______ (balanced) of the earth. 3. The ______ (pollute) from factories makes the air dirty around us. 4. We should try our best ______ (protect) all kinds of wild animals. 5. The number of wild pandas has ______ (rise) in the past few years. 6. Local people show a deep ______ (understand) of environmental protection now. 7. This invention is very ______ (help) for rainforest protection. 8. Many sea animals are in danger because of ______ (overfish). 9. The forest ______ (guard) work day and night to stop illegal logging. 10. Human ______ (develop) brings both convenience and environmental problems. 11. We need to improve the living ______ (condition) of wild animals. 12. The natural scenery ______ (hide) by smog will appear without pollution. 13. Farmers are ______ (return) farmland to forests to protect pandas. 14. China has made great ______ (effort) to protect ecological balance. 15. The rainforest is home to ______ (thousand) of wild species. 16. We should allow nature ______ (show) its original beauty. 17. Light pollution causes the ______ (die) of millions of birds every year. 18. The ______ (survive) of wild animals depends on a good ecosystem. 19. This kind of green energy produces few ______ (greenhouse) gases. 20. The panda is a ______ (nation) treasure of China. 21. Illegal logging is ______ (harm) to the rainforest ecosystem. 22. We can take many ______ (measure) to protect ocean resources. 23. The ecosystem will become ______ (balance) with less human damage. 24. More ______ (research) centres are built to protect rare animals. 25. People have realized the ______ (important) of protecting nature. 答案：1. increase 2. balance 3. pollution 4. to protect 5. risen 6. understanding 7. helpful 8. overfishing 9. guards 10. development 11. conditions 12. hidden 13. returning 14. efforts 15. thousands 16. to show 17. death 18. survival 19. greenhouse 20. national 21. harmful 22. measures 23. balanced 24. research 25. importance 三、根据汉语提示完成句子，每空一词。 1. 我们应该学会与自然和睦相处，保护生态平衡。 We should learn to ______ ______ ______ nature and protect the ecological balance. 2. 没有人类的污染，大自然的美景将会重新展现。 ______ human ______, the beauty of nature will appear again. 3. 中国政府为保护野生大熊猫付出了巨大努力。 The Chinese government has ______ ______ ______ to protect wild giant pandas. 4. 这片森林是多种野生动植物的家园。 This forest is ______ ______ many kinds of wild animals and plants. 5. 过度捕捞正在严重危害海洋生态系统。 Overfishing is ______ ______ ______ the marine ecosystem seriously. 6. 我们不能等待问题成真，必须立刻采取行动。 We can't wait for problems to ______ ______, and we must take action at once. 7. 绿色能源几乎不产生温室气体，有利于减缓全球变暖。 Green energy produces few ______ ______ and helps slow down global warming. 8. 当地居民退耕还林，为熊猫提供了更多食物和空间。 Local people returned farmland to forests to ______ more food and space ______ pandas. 9. 保护熊猫无疑有助于整个生态系统的存续。 Protecting pandas is ______ ______ ______ the survival of the whole ecosystem. 10. 越来越多的人开始理解环境保护的重要性。 More and more people begin to ______ ______ ______ of environmental protection. 11. 雨林中非法伐木很难被人们察觉。 Illegal logging in rainforests is hard for people to ______ ______. 12. 人类的快速发展给自然留下了诸多痕迹。 The rapid development of humans ______ many ______ on nature. 13. 安静的环境能让动物更容易找到同伴、组建种群。 A quiet environment makes it easier for animals to ______ ______ ______ and form families. 14. 我们应当任由自然顺应其规律发展。 We should ______ nature to ______ ______ way. 15. 海洋覆盖了地球表面的百分之七十以上。 Oceans ______ ______ 70% of the earth's surface. 16. 许多海洋动物正遭受全球变暖带来的危害。 Many sea animals are ______ ______ global warming. 17. 这个保护装置可以有效阻止树木被砍伐。 This protection device can stop trees from ______ ______ ______ effectively. 18. 生态平衡对地球上所有生物的生存至关重要。 Ecological balance is vital for the ______ ______ all living things on earth. 19. 经过多年保护，野生动物的数量大幅增加。 After years of protection, the ______ ______ wild animals has increased greatly. 20. 我们需要重新思考人与自然的关系。 We need to rethink the ______ ______ humans and nature. $