Unit 4 The Earth-2026-2027学年七年级英语上册词汇精讲精练（沪教版）

U 4 The Earth 词汇精讲精练 核心词汇概览： amazing cover freezing therich provide explore disappear plastic pollution;protect;harmful;hunt solution;blow generation;be covered by what's more provide with plastic pollution cut down blow away hundreds of 词汇精讲 序号 单词/短语 词汇讲解内容 amazing 释义：adj.令人惊奇的；惊人的 /a'meizin/ 词形变化：amaze(v.使惊奇)；amazed(adj.感到惊奇的)； amazingly(adv.惊人地) 搭配：be amazin.gat..在…方面很出色 例句：The view from the top is amazing. 从山顶看到的景色令人惊叹。 2 cover 释义：V.覆盖；遮盖；包括；n.封面；盖子 /'kAva(r)/ 词形变化：covered(过去式/过去分词)；covering(现在分词)； ncover(v.揭开)》 搭配：be covered by/with被…覆盖；cover.with.用…覆 盖… 例句：Snow covered the ground.The book cover is red. 雪覆盖了地面。书的封面是红色的。 freezing 释义：ad.极冷的：冻结的 /'frizu/ 词形变化：freeze(v.结冰)：froze(过去式)：frozen(过去分词)： freezer(n.冰柜) 搭配：freezing point冰点；below freezing零度以下 例句：It's freezing outside. 外面冷极了。 4 the rich 释义：n.富人（复数概念，常与the连用） /ǒ3t 词形变化：rich(adj.富有的；丰富的)；richness(.丰富)；enrich (v.使丰富) 搭配：the rich and the poor富人和穷人；be rich in富含… 例句：The rich should help the poor. 富人应该帮助穷人。 5 provide 释义：v提供；供给 /pra'vaid/ 词形变化：provided(过去式/过去分词)；providing(现在分词)： provision(.供应：条款) 搭配：provide sb with sth=provide sth for sb向某人提供某物 例句：The school provides students with books.. 学校为学生提供书本。 6 explore 释义：V.探索；探险；探究 /ik'splo:(r)/ 词形变化：explored(过去式/过去分词)：exploring(现在分词)： explorer(.探险家)；exploration(n.探索) 词根词缀：ex-(向外)+plore(喊叫)→向外喊叫→探索 例句：They want to explore the forest. 他们想探索这片森林。 disappear 释义：v.消失；不见 disa'pIa(r)/ 词形变化：disappeared(过去式/过去分词)；disappearing(现在分 词；disappearance.消失) 词根词缀：dis-(否定/相反)+appear(出现)一不出现→消失 反义词：appear(w.出现) 例句：The sun disappeared behind the clouds 太阳消失在云层后面。 8 plastic 释义：n.塑料；adj.塑料制的：可塑的 /'plaestik/ 词形变化：plastics(n.塑料制品：塑料学) 搭配：plastic bag塑料袋；plastic bottle塑料瓶；plastic pollution塑 料污染 例句：Don't use too many plastic bags.. 不要使用太多塑料袋。 pollution 释义：n.污染；污染物 /pa'lu:fn/ 词形变化：pollute(v.污染)；polluted(adj.被污染的)；pollutant(m. 污染物) 搭配：air pollution空气污染；water pollution水污染；plastic pollution塑料污染 例句：W形must stop pollution.. 我们必须阻止污染。 10 protect 释义：v.保护；防护 /pra'tekt/ 词形变化：protected(过去式/过去分词；protecting(现在分词)； protection(.保护)；protective(adj.保护的) 搭配：protect..fiom/against.保护…免受… 例句：W形should protect the environment. 我们应该保护环境。 11 harmful 释义：ad.有害的 /'hamfl 词形变化：ham(n..伤害)；harmfully(adv.有害地)：harmless (adj.无害的) 搭配：be harmful to对…有害 例句：Smoking is harmful to health. 吸烟对健康有害。 12 hunt 释义：vm.打猎：搜寻 /hAnt/ 词形变化：hunted(过去式/过去分词)：hunting(现在分词)；hunter (.猎人)：hunt for寻找 搭配：go hunting去打猎；hunt for jobs找工作 例句：They hunt animals for food. 他们猎杀动物作为食物。 13 solution 释义：n.解决办法；溶液 /s3'lu:/ 词形变化：solve(v.解决)：solved(过去式)；solving(现在分词) 搭配：a solution to..的解决方案 例句：We need to find a solution to the problem. 我们需要找到这个问题的解决方法。 14 blow 释义：v.吹；吹动：刮风：n.打击；吹风 /blau/ 词形变化：blew(过去式)：blown(过去分词)：blowing(现在分词) 搭配：blow away吹走；blow out吹灭；blow up爆炸；充气 例句：The wind blew the leaves away. 风把树叶吹走了。 15 generation 释义：n.代：一代人：产生 /d3ens'reifn/ 词形变化：generate(w.产生)；generator(.发电机)；generational (adi.代际的) 搭配：from generation to generation一代代地；the younger generation年轻一代 例句：We should leave a better world for future generations. 我们应该为后代留下一个更好的世界。 16 be covered by 释义：结构：被…覆盖（被动语态) 用法：be covered by+名词（强调动作的执行者）；be covered with +名词（强调状态） 例句：The ground was covered by snow. 地面被雪覆盖了。 17 what's more 释义：结构：此外：而且（用作插入语） 例句：He is smart..What's more,.he is hardworking. 他很聪明，而且很勤奋。 18 provide with 释义：结构：向…提供（provide sb with sth) 例句：The charity provides poor children with food, 慈善机构为贫困儿童提供食物。 19 plastic pollution 释义：含义：塑料污染 例句：Plastic pollution is a serious problem, 塑料污染是一个严重的问题。 20 cut down 释义：结构：砍倒：削减 例句：People cut down trees for wood. 人们砍伐树木获取木材。 21 blow away 释义：结构：吹走 例句：The strong wind blew away my hat. 强风吹走了我的帽子。 22 hundreds of 释义：结构：数百的：成百上千的（后面接可数名词复数） 注意：hundredi前有具体数字时不用复数，如two hundred;表示概数 时用hundreds of 例句：Hundreds of birds fly south in winter: 数百只鸟冬天飞往南方。 二、专项训练 (一)单句填空（用所给词的适当形式填空） 1.The view from the mountain top is (amaze). 2.The ground (cover)by leaves in autumn. 3.It's (freeze)cold outside.Put on your coat. (rich)should help the poor in our society 5.The school (provide)students with clean water 6.They plan to (explore)the cave next week. 7.The magician made the rabbit (appear)in front of us. 8.We must reduce (plastic)pollution 9.The river is (pollute)by factories. 10.We need to (protection)wild animals. 11.Too much sugar is (harm)to your teeth. 12.Many people (hunt)tigers for their fur in the past. (二)短文填空 We live on a beautiful planet.But now it faces many problems.First,1. pollution is everywhere.People throw away 2. bags,and they never 3. Second,people 4. down too many trees.5.,the weather becomes strange.Some places are 6. hot,while others are 7. cold.The 8. often use too many resources.We must find a 9. to these problems.We should 10. the environment.11. of animals are in danger.We need to 12. them from being hurt. (三)短文选词填空 (用方框中所给单词或短语的适当形式填空，使短文完整正确。每个单词限用一次，每空 限填一个单词。) 方框词汇：amazing,cover,freezing,the rich,.provide,explore,.disappear,plastic,pollution,, protect,harmful,hunt,solution,blow,generation,be covered by,what's more,provide with, plastic pollution,cut down,blow away,hundreds of Our earth is an 1. planet.But human activities have caused serious problems. 2. has become a big issue-people use too many 3. products.Many forests 4. because people 5. trees for wood.6. _some animals because their homes are destroyed.8.often 9. themselves 10. luxury,but they forget to 11.the environment.12. waste gases 13. the air and are 14. to our health.We must find a 15. to stop 16. Each 17. should take action.For example,we can use fewer plastic bags,and the wind should not 18. rubbish everywhere.If we work together, the future will be 19. (四)完成句子 根据所给汉语意思，用单词或短语完成下列英文句子。 1.山顶的景色真是令人惊叹。 The view at the top of the mountain is really 2.大雪覆盖了整个村庄。 The whole village heavy snow. 3南极的天气极其寒冷。 The weather in Antarctica is 4.富人应该为环保捐款。 should donate money to protect the environment. 5.动物园为动物们提供了舒适的家。 The zoo animals a comfortable home. 6科学家们正在探索海洋的奥秘。 Scientists are the secrets of the ocean. 7许多物种正从地球上消失。 Many species are from the earth. 8塑料污染对海洋生物非常有害。 is very to sea animals 9我们必须保护地球免受污染。 We must the earth pollution. 10.砍伐树木会导致沙尘暴。 trees can cause sandstorms. 11.风把树叶吹走了。 The wind the leaves 12.成百上千的观众来到了现场。 audience came to the scene 三、参考答案 (一)单句填空 1.amazing;2.is covered;3.freezing;4.The rich;5.provides;6.explore;7.disappear; 8.plastic;9.polluted;10.protect;11.harmful;12.hunted (二)短文填空 1.plastic;2.plastic;3.disappear;4.cut;5.What's more;6.freezing;7.freezing;8.rich; 9.solution;10.protect;11.Hundreds;12.protect (三)短文选词填空 1.amazing;2.Plastic pollution;3.plastic;4.are covered by;5.cut down;6.What's more; 7.disappear;8.The rich;9.provide;10.with;11.protect;12.Hundreds of;13.blow; 14.harmful;15.solution;16.plastic pollution;17.generation;18.blow away;19.amazing (四)完成句子 1.amazing;2.is covered with by;3.freezing;4.The rich;5.provides;with; 6.exploring;7.disappearing;8.Plastic pollution;harmful;9.protect;from;10.Cutting down;11.blew;away;12.Hundreds of