Unit 3 A Green Earth, a Better Home单元知识总结及重点易错专项训练2026-2027学年仁爱科普版英语九年级上册

**基本信息** 聚焦10个重点易错考点，通过基础-提升-拓展三级训练，结合解析提炼语法规则与短语辨析方法，构建从词汇到语法的递进式知识逻辑，培养语言能力与思维品质。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |情态动词|9题/表建议/责任/许可|should/must/can用法区别|从基本功能到语境应用| |不可数名词|9题/pollution/waste|单复数规则及修饰词搭配|概念辨析到实际运用| |动名词作主语|9题/Recycling protects...|V-ing作主语的语法结构|形式识别到功能理解| |前缀re-构词|9题/recycle/reuse|前缀含义及词汇生成|构词法规则到词汇拓展| |短语辨析|45题/be harmful to等|固定搭配及语境辨析|短语含义到情境运用|

仁爱科普版九年级上册 Unit 3 A Green Earth, a Better Home 单元知识总结及重点易错专项训练 ■ ■ ■ ■ ■ ■ ■ 说明：本练习紧扣最新教材精选 10 个重点易错考点，每个考点含基础题×3、提升题×3、拓展题×3，共 90 题。 一、本单元重点单词 pollution n. 污染；pollute v. 污染；polluted adj. 受污染的 environment n. 环境；environmental adj. 环境的；environmentalist n. 环保主义者 recycle v. 回收利用；reuse v. 重新使用；reduce v. 减少 waste n. 废物 / v. 浪费 / adj. 废弃的；rubbish / trash / garbage n. 垃圾 protection n. 保护；organization n. 组织；awareness n. 意识 harmful adj. 有害的；volunteer n. 志愿者；cooperation n. 合作 suffer v. 遭受；cooperate v. 合作；carbon n. 碳；soil n. 土壤；sort v. 分类 二、本单元重点短语 be harmful to 对……有危害；do harm to 对……有害；be good for 对……有益 take action 采取行动；make efforts to do 努力做某事；put...at risk 使……处于危险中 protect...from... 保护……免受……；stop...from... 阻止……做…… raise people's awareness of 提高人们对……的意识；fight against 与……作斗争 volunteer in an environmental organization 在环保组织做志愿者 spread the message about 传播关于……的信息；environmental protection 环境保护 the three Rs 三个R（reduce, reuse, recycle）；in one's daily life 在某人的日常生活中 throw away 扔掉；pick up 捡起；cut down 砍倒；turn off 关闭；waste sorting 垃圾分类 as a result 结果；as a result of 由于；result in 导致；result from 由……引起 三、本单元重点句型 ... pollution was very serious. Now, ... have/has come back. We should reduce the waste we produce. Reusing means making use of something again or in another way. The three R's — reduce, reuse and recycle are important. We should make efforts to reduce pollution. Smoking is harmful to your health. 四、本单元重点语法 1. 情态动词 should / must / can 表建议、责任与许可。 2. 可数与不可数名词：pollution, waste, energy, trash 等作不可数名词。 3. 动名词（V-ing）作主语：Recycling can protect the environment. 4. 前缀 re- 构词法：recycle, reuse, reduce, rethink, rebuild, rewrite（表示"再、重新"）。 5. 动词短语中代词宾语的位置：throw it away（放中间）。 考点1：情态动词 should / must / can 表建议、责任与许可 基础题：（选择题） ◇　　（ ）1. — The water is polluted. What ____ we do? — We ____ stop pouring waste water into it. A. should; should B. must; can C. can; must D. need; should ◇　　（ ）2. To live a green life, we ____ use both sides of paper. A. can B. should C. mustn't D. can't ◇　　（ ）3. — ____ I borrow your book about the three Rs? — Sure, you ____. A. Must; must B. Should; should C. Can; can D. Need; need 提升题：（选择题） ▷　　（ ）1. The air pollution in Wuhan is serious, so the government ____ take action at once. A. can B. may C. must D. need ▷　　（ ）2. You ____ throw trash into the river. It ____ do harm to the fish. A. shouldn't; can B. must; should C. can; must D. need; can ▷　　（ ）3. We ____ waste energy because it is very precious. A. should B. mustn't C. can D. need 拓展题：（选择题） ★　　（ ）1. — What ____ we do to reduce pollution in Xiamen? — We ____ ride bikes instead of driving. A. should; should B. can; must C. must; can D. need; should ★　　（ ）2. As green people, we ____ reuse old things, and we ____ buy what we don't need. A. should; should B. must; mustn't C. can; should D. should; mustn't ★　　（ ）3. — ____ I go with you to plant trees in Kunming? — Of course you ____. A. Need; need B. Can; can C. Must; must D. Should; should 考点2：可数与不可数名词（pollution, waste, energy, trash 等不可数） 基础题：（选择题） ◇　　（ ）1. ____ is a big problem in many cities. A. Pollutions B. Pollution C. A pollution D. The pollutions ◇　　（ ）2. We should save ____ because it is very important. A. energy B. an energy C. energies D. a energy ◇　　（ ）3. Too much ____ comes from cars and factories. A. wastes B. waste C. a waste D. the wastes 提升题：（选择题） ▷　　（ ）1. We should sort the ____ before throwing it away. A. waste B. wastes C. a waste D. an waste ▷　　（ ）2. Many ____ are working to protect the earth. A. environmental B. environment C. environmentalists D. environments ▷　　（ ）3. ____ is everyone's duty. A. Environmental protection B. An environmental protection C. Environmental protections D. The environmental protections 拓展题：（选择题） ★　　（ ）1. The ____ from the factory has put people's health at risk. A. pollutions B. pollution C. a pollution D. many pollution ★　　（ ）2. We should reduce the ____ we produce every day. A. trashes B. trash C. a trash D. the trashes ★　　（ ）3. Small ____ in our daily life can help save the earth. A. Small effort B. Small efforts C. A small efforts D. Small efforting 考点3：动名词（V-ing）作主语 基础题：（选择题） ◇　　（ ）1. ____ can protect the environment and save money. A. Recycle B. Recycling C. To recycle D. Recycled ◇　　（ ）2. ____ old clothes to charity is a good way to help others. A. Donate B. Donating C. Donated D. To donating ◇　　（ ）3. ____ fewer plastic bags is good for the earth. A. Use B. Using C. Used D. To using 提升题：（选择题） ▷　　（ ）1. ____ the lights when you leave helps save energy. A. Turn off B. Turning off C. Turned off D. To turning off ▷　　（ ）2. ____ waste water into the river is wrong. A. Pour B. Pouring C. Poured D. To pouring ▷　　（ ）3. ____ the three Rs is important for a green life. A. Follow B. Following C. Followed D. To following 拓展题：（选择题） ★　　（ ）1. ____ the message about environmental protection is our job. A. Spread B. Spreading C. Spreaded D. To spreading ★　　（ ）2. ____ in an environmental organization makes Bella happy. A. Volunteer B. Volunteering C. Volunteered D. To volunteering ★　　（ ）3. ____ sandstorms is difficult but necessary. A. Stop B. Stopping C. Stopped D. To stopping 考点4：前缀 re- 构词法（recycle, reuse, reduce, rethink, rebuild, rewrite） 基础题：（选择题） ◇　　（ ）1. We can ____ paper boxes and glass bottles. A. recycle B. cycle C. recycling D. cycled ◇　　（ ）2. ____ means making use of something again. A. Reduce B. Reuse C. Rebuild D. Rewrite ◇　　（ ）3. We should ____ the waste we produce. A. reduce B. duce C. reducing D. duced 提升题：（选择题） ▷　　（ ）1. The prefix "re-" in "recycle" means ____. A. not B. again C. before D. after ▷　　（ ）2. "____" means to think again about something. A. Rethink B. Think C. Unthink D. Prethink ▷　　（ ）3. After the sandstorm, people ____ their homes. A. build B. rebuilt C. rebuild D. building 拓展题：（选择题） ★　　（ ）1. To ____ a book, you write it again in a new way. A. rewrite B. write C. prewrite D. unwritten ★　　（ ）2. We should ____ before we buy new things. A. rethink B. think C. unthink D. prethink ★　　（ ）3. ____ used materials into new products helps the earth. A. Recycle B. Recycling C. Recycled D. To recycling 考点5：be harmful to / be good for / do harm to 辨析 基础题：（选择题） ◇　　（ ）1. Smoking ____ your health. A. is harmful to B. is good for C. is harm to D. does good to ◇　　（ ）2. Riding a bike ____ the environment. A. is harmful to B. is good for C. does harm to D. is harm for ◇　　（ ）3. Too much trash ____ our earth. A. is good for B. does harm to C. is good to D. does good to 提升题：（选择题） ▷　　（ ）1. Loud noise ____ people's hearing. A. is good for B. is harmful to C. does good to D. is good to ▷　　（ ）2. Planting more trees ____ the air. A. does harm to B. is harmful to C. is good for D. is harm for ▷　　（ ）3. The polluted water ____ the fish in the river. A. is good for B. does harm to C. does good to D. is good to 拓展题：（选择题） ★　　（ ）1. Throwing batteries into the soil ____ it. A. is good for B. is harmful to C. does good to D. is good to ★　　（ ）2. Saving energy ____ our future. A. does harm to B. is harmful to C. is good for D. is harm for ★　　（ ）3. The sandstorm ____ the crops in Jinan. A. is good for B. does harm to C. does good to D. is good to 考点6：take action / make efforts to do / put...at risk 运用 基础题：（选择题） ◇　　（ ）1. We should ____ to make our earth a better home. A. take action B. take an action C. taking action D. takes action ◇　　（ ）2. We must ____ our health ____ by pouring waste into rivers. A. put; at risk B. put; in risk C. puts; at risk D. put; on risk ◇　　（ ）3. They ____ to reduce pollution in their daily life. A. make effort B. make efforts C. makes effort D. making efforts 提升题：（选择题） ▷　　（ ）1. The factory ____ the fish's life ____ by dumping waste. A. put; at risk B. puts; at risk C. put; in risk D. puts; on risk ▷　　（ ）2. Olivia ____ to spread the message about going green. A. make efforts B. makes effort C. makes efforts D. making efforts ▷　　（ ）3. We should ____ now, or the earth will be in danger. A. take actions B. take action C. taking action D. takes action 拓展题：（选择题） ★　　（ ）1. Chen Wei ____ great efforts to sort the waste every day. A. make B. makes C. making D. to make ★　　（ ）2. Don't ____ people's health ____ with dirty air. A. put; at risk B. puts; at risk C. put; in risk D. putting; at risk ★　　（ ）3. The whole school ____ to save energy this month. A. take action B. takes action C. taking action D. taken action 考点7：protect...from... / stop...from... 保护、阻止结构 基础题：（选择题） ◇　　（ ）1. We should ____ the earth ____ being polluted. A. protect; from B. protect; of C. protects; from D. protect; for ◇　　（ ）2. Sunglasses ____ our eyes ____ the sun. A. protect; of B. protect; from C. protects; from D. protect; for ◇　　（ ）3. We must ____ the river ____ pollution. A. stop; from B. stop; of C. stops; from D. stop; for 提升题：（选择题） ▷　　（ ）1. Trees can ____ the soil ____ washing away. A. protect; from B. protect; of C. protects; from D. protecting; from ▷　　（ ）2. The new law ____ factories ____ pouring waste water. A. stop; from B. stops; from C. stop; of D. stops; of ▷　　（ ）3. We should ____ ourselves ____ the sandstorm. A. protect; of B. protect; from C. protects; from D. protect; for 拓展题：（选择题） ★　　（ ）1. The volunteers ____ the birds ____ danger. A. protect; from B. protects; from C. protect; of D. protecting; from ★　　（ ）2. Nothing can ____ us ____ doing our part for the earth. A. stop; of B. stop; from C. stops; from D. stop; for ★　　（ ）3. Zhou Kai ____ his little sister ____ the hot sun. A. protect; from B. protects; from C. protect; of D. protecting; from 考点8：as a result / as a result of / result in / result from 辨析 基础题：（选择题） ◇　　（ ）1. He worked hard. ____, he passed the exam. A. As a result B. As a result of C. Result in D. Result from ◇　　（ ）2. The factory poured waste water. ____, the river became dirty. A. As a result B. As a result of C. Result in D. Result from ◇　　（ ）3. ____ the heavy rain, the match was put off. A. As a result B. As a result of C. Result in D. Result from 提升题：（选择题） ▷　　（ ）1. The sandstorm ____ poor protection of the soil. A. results from B. results in C. as a result D. as a result of ▷　　（ ）2. Pouring waste into rivers will ____ dirty water. A. result from B. result in C. as a result D. as a result of ▷　　（ ）3. They planted many trees. ____, the air got cleaner. A. As a result B. As a result of C. Result from D. Result in 拓展题：（选择题） ★　　（ ）1. The flood ____ the heavy snow in Kunming. A. resulted in B. resulted from C. as a result D. as a result of ★　　（ ）2. Using fewer plastic bags will ____ less trash. A. result from B. result in C. as a result D. as a result of ★　　（ ）3. ____ the three Rs, Olivia's family saves a lot. A. As a result B. As a result of C. Result in D. Result from 考点9：throw away / pick up / cut down / turn off（代词宾语放中间） 基础题：（选择题） ◇　　（ ）1. Don't ____ the old bottle. You can reuse it. A. throw away it B. throw it away C. throw away D. throwing away ◇　　（ ）2. Please ____ the trash on the ground. A. pick up it B. pick it up C. pick up D. picking up ◇　　（ ）3. We should ____ the trees in the park. A. cut down B. cut it down C. cut down it D. cutting down 提升题：（选择题） ▷　　（ ）1. The light is still on. Please ____ when you leave. A. turn off it B. turn it off C. turn off D. turning off ▷　　（ ）2. Don't ____. We can donate them to charity. A. throw away the clothes B. throw the clothes away C. throw away them D. throw them away ▷　　（ ）3. They ____ the waste paper and put it in the bin. A. pick; up it B. pick it up C. pick up it D. picking it up 拓展题：（选择题） ★　　（ ）1. Bella, ____ the bottle ____ and put it in the recycle bin. A. pick; up it B. pick it up C. pick up it D. picking it up ★　　（ ）2. We should not ____. They are homes for birds. A. cut down them B. cut them down C. cut down D. cutting them down ★　　（ ）3. ____ the computer ____ after you finish your homework. A. turn; off it B. turn it off C. turn off it D. turning it off 考点10：单元重点词汇辨析（reduce / reuse / recycle / waste / rubbish / trash） 基础题：（选择题） ◇　　（ ）1. To ____ means to produce less trash. A. reduce B. reuse C. recycle D. waste ◇　　（ ）2. To ____ means to make use of something again. A. reduce B. reuse C. recycle D. waste ◇　　（ ）3. To ____ means to turn used materials into new products. A. reduce B. reuse C. recycle D. waste 提升题：（选择题） ▷　　（ ）1. Don't ____ water when you brush your teeth. A. reduce B. reuse C. recycle D. waste ▷　　（ ）2. We should ____ the water from showers to clean the toilet. A. reduce B. reuse C. recycle D. waste ▷　　（ ）3. ____ paper boxes helps save trees. A. Reducing B. Reusing C. Recycling D. Wasting 拓展题：（选择题） ★　　（ ）1. Put the ____ into the right bin, please. A. reduce B. reuse C. rubbish D. recycle ★　　（ ）2. The three Rs are ____, reuse and recycle. A. rubbish B. trash C. reduce D. waste ★　　（ ）3. Too much ____ in the street looks terrible. A. trash B. reduce C. recycle D. reuse 参考答案 考点1：基础题 1.A 2.B 3.C 提升题 1.C 2.A 3.B 拓展题 1.A 2.D 3.B 考点2：基础题 1.B 2.A 3.B 提升题 1.A 2.C 3.A 拓展题 1.B 2.B 3.B 考点3：基础题 1.B 2.B 3.B 提升题 1.B 2.B 3.B 拓展题 1.B 2.B 3.B 考点4：基础题 1.A 2.B 3.A 提升题 1.B 2.A 3.C 拓展题 1.A 2.A 3.B 考点5：基础题 1.A 2.B 3.B 提升题 1.B 2.C 3.B 拓展题 1.B 2.C 3.B 考点6：基础题 1.A 2.A 3.B 提升题 1.B 2.C 3.B 拓展题 1.B 2.A 3.B 考点7：基础题 1.A 2.B 3.A 提升题 1.A 2.B 3.B 拓展题 1.A 2.B 3.B 考点8：基础题 1.A 2.A 3.B 提升题 1.A 2.B 3.A 拓展题 1.B 2.B 3.B 考点9：基础题 1.B 2.B 3.A 提升题 1.B 2.D 3.B 拓展题 1.B 2.B 3.B 考点10：基础题 1.A 2.B 3.C 提升题 1.D 2.B 3.C 拓展题 1.C 2.C 3.A 详细参考解析 考点1 【基础题】 1. 考查 should 表建议。问句与答句均用 should 表示"应该怎么做"，故选 A。 2. should 表示责任/建议，意为"应该"，符合绿色生活语境，故选 B。 3. can 表示请求许可，肯定回答用 can，故选 C。 【提升题】 1. 污染严重，政府"必须"立即行动，must 表必须，故选 C。 2. shouldn't 表不应该（禁止乱扔）；can 表可能（会伤害鱼），故选 A。 3. 浪费能源是错误的，mustn't 表禁止，故选 B。 【拓展题】 1. 问建议用 should，答也用 should，故选 A。 2. 我们应该 reuse（should），不应买不需要的东西用 mustn't buy，故选 D。 3. can 表请求许可，肯定回答用 can，故选 B。 考点2 【基础题】 1. pollution 为不可数名词，无复数、不加 a，故选 B。 2. energy 不可数，不能说 an energy/energies，故选 A。 3. waste 作"废物"不可数，故选 B。 【提升题】 1. waste 作"废物"不可数，故选 A。 2. environmentalist（环保人士）可数，many 后接复数，故选 C。 3. environmental protection 为不可数概念，不加 a/an，故选 A。 【拓展题】 1. pollution 不可数，无复数，故选 B。 2. trash 不可数，故选 B。 3. effort 可数，small efforts 意为"小小的努力"，故选 B。 考点3 【基础题】 1. 动名词 Recycling 作主语，故选 B。 2. 动名词 Donating 作主语，故选 B。 3. 动名词 Using 作主语，故选 B。 【提升题】 1. 动名词 Turning off 作主语，故选 B。 2. 动名词 Pouring 作主语，故选 B。 3. 动名词 Following 作主语，故选 B。 【拓展题】 1. 动名词 Spreading 作主语，故选 B。 2. 动名词 Volunteering 作主语，故选 B。 3. 动名词 Stopping 作主语，故选 B。 考点4 【基础题】 1. recycle 意为"回收"，故选 A。 2. reuse 意为"再次使用"，故选 B。 3. reduce 意为"减少"，故选 A。 【提升题】 1. 前缀 re- 表示"再、重新"，故选 B。 2. rethink 意为"重新思考"，故选 A。 3. rebuild 意为"重建"，一般现在时语境用 rebuild，故选 C。 【拓展题】 1. rewrite 意为"重写"，故选 A。 2. rethink 意为"重新思考"，故选 A。 3. 动名词 Recycling 作主语，故选 B。 考点5 【基础题】 1. be harmful to 意为"对……有害"，吸烟有害健康，故选 A。 2. be good for 意为"对……有益"，骑车对环境有益，故选 B。 3. do harm to 意为"对……有害"，太多垃圾危害地球，故选 B。 【提升题】 1. 噪音对听力有害，用 be harmful to，故选 B。 2. 种树对空气有益，用 be good for，故选 C。 3. 污染的水对鱼有害，用 do harm to，故选 B。 【拓展题】 1. 电池入土对其有害，用 be harmful to，故选 B。 2. 节能对未来有益，用 be good for，故选 C。 3. 沙尘暴对庄稼有害，用 do harm to，故选 B。 考点6 【基础题】 1. take action 为固定搭配"采取行动"，故选 A。 2. put...at risk 意为"使……处于危险中"，故选 A。 3. make efforts 意为"作出努力"，复数形式，故选 B。 【提升题】 1. factory 单数，put 用 puts；at risk 固定搭配，故选 B。 2. Olivia 单数，make 用 makes；efforts 复数，故选 C。 3. take action 固定搭配，故选 B。 【拓展题】 1. Chen Wei 单数，make 用 makes，故选 B。 2. 祈使句以动词原形开头，put...at risk，故选 A。 3. school 作整体单数，take 用 takes，故选 B。 考点7 【基础题】 1. protect...from... 保护……免受……，故选 A。 2. protect...from... 保护……免受……，故选 B。 3. stop...from... 阻止……做……，故选 A。 【提升题】 1. protect...from... 保护……免受……，故选 A。 2. law 单数，stop 用 stops；from 固定搭配，故选 B。 3. protect...from... 保护……免受……，故选 B。 【拓展题】 1. protect...from...，主语 volunteers 复数用 protect，故选 A。 2. stop...from... 阻止……做……，故选 B。 3. Zhou Kai 单数，protect 用 protects，故选 B。 考点8 【基础题】 1. as a result 意为"结果"，连接两个句子，故选 A。 2. as a result 意为"结果"，故选 A。 3. as a result of 后接名词"大雨"，意为"由于"，故选 B。 【提升题】 1. 沙尘暴是由土壤保护不善"引起"，result from 由……引起，故选 A。 2. 倒废水"导致"脏水，result in 导致，故选 B。 3. as a result 意为"结果"，故选 A。 【拓展题】 1. 洪水由大雪"引起"，resulted from，故选 B。 2. 少用塑料袋"导致"更少垃圾，result in，故选 B。 3. as a result of 后接名词 the three Rs，意为"由于"，故选 B。 考点9 【基础题】 1. 代词 it 作宾语放短语中间：throw it away，故选 B。 2. 代词 it 放中间：pick it up，故选 B。 3. trees 为名词宾语，放短语后：cut down，故选 A。 【提升题】 1. 代词 it 放中间：turn it off，故选 B。 2. them 为代词宾语放中间：throw them away，故选 D。 3. 代词 it 放中间：pick it up，故选 B。 【拓展题】 1. 代词 it 放中间：pick it up，故选 B。 2. them 为代词宾语放中间：cut them down，故选 B。 3. 代词 it 放中间：turn it off，故选 B。 考点10 【基础题】 1. reduce 意为"减少（产生更少垃圾）"，故选 A。 2. reuse 意为"再次使用"，故选 B。 3. recycle 意为"回收再利用"，故选 C。 【提升题】 1. waste 意为"浪费"，不要浪费水，故选 D。 2. reuse 意为"再次使用"， reuse the water 再利用水，故选 B。 3. Recycling 回收纸箱有助于保护树木，故选 C。 【拓展题】 1. rubbish 意为"垃圾"，放进正确的垃圾桶，故选 C。 2. 三个 R 之首是 reduce，故选 C。 3. trash 意为"垃圾"，街上太多垃圾很难看，故选 A。 学科网（北京）股份有限公司 $