Unit 5 The power of plants重点语法与短语专项练习2026-2027学年外研版英语七年级上册

外研版七年级上册 · Unit 5 The power of plants · 重点语法与短语专项练习 2026外研版七年级上册 Unit 5 The power of plants 重点语法与短语专项练习 适用教材：外研版（2026）七年级上册 · Unit 5 The power of plants 题型说明：◇ 基础题 ▷ 提升题 ★ 拓展题 建议用时：40—50 分钟 满分：120 分（每题 2 分） 【考点总览】本单元高频易错语法与短语一览 考点 核心语法 / 短语 常考题型 考点一 一般将来时（will 与 be going to） 选择/填空/改错/语篇 考点二 情态动词 should / must / can 表建议与义务 选择/填空/改错/语篇 考点三 动词不定式作目的状语（to + 动词原形） 选择/填空/改错/语篇 考点四 重点短语辨析（be good for / be bad for / be full of / look after） 选择/填空/改错/语篇 考点五 介词 for / without 的用法辨析 选择/填空/改错/语篇 考点六 not only...but also... 并列结构与词形转换 选择/填空/改错/语篇 考点一：一般将来时（will 与 be going to） 【易错1】will 后必须接动词原形，不能加 to。误：He will to go → 正：He will go 【易错2】be going to 中 be 动词需随主语变化。误：She going to → 正：She is going to 【易错3】will 和 be going to 不可混用。will 侧重客观/临时决定，be going to 侧重事先计划/有明显迹象。 【易错4】there will be 是固定句型，不能写成 there will have。误：There will have a party → 正：There will be a party ◇ 基础题（共4题） （ ）1. — What ______ you ______ tomorrow? — I ______ my grandparents. A. are; going to do; am visiting B. do; do; visit C. will; do; am going to visit D. are; doing; will visit （ ）2. Look at the dark clouds! It ______ soon. A. rains B. is raining C. is going to rain D. will raining （ ）3. There ______ a football match next week. A. is going to have B. will be C. will have D. is going to being （ ）4. We ______ a school trip next month. We are planning it now. A. have B. will have C. are having D. are going to have ▷ 提升题（共4题） （ ）1. — It's so cold today. I think it ______ snow tonight. — You're right. The weather forecast says so. A. will B. is going to C. can D. must （ ）2. Olivia ______ to Xiamen this summer holiday. She has already booked the tickets. A. will go B. is going to go C. goes D. is going （ ）3. 句型转换：They will plant trees on the hill.（改为否定句） → They ______ ______ trees on the hill. A. won't plant B. will not going to plant C. don't will plant D. aren't going to plant （ ）4. 用所给词的正确形式填空： Lily and Zhang Hao ______ (visit) the botanical garden next Sunday. A. visits B. will visits C. are going to visit D. is going to visit ★ 拓展题（共4题） （ ）1. 语篇填空（节选）： Jam: Have you heard? Our school ______ (plant) more trees around the playground next spring. Chen Wei: Really? That's great! Who ______ (join) the activity? 选择正确的选项补全对话。 A. will plant; is going to join B. is going to plant; will join C. plants; joins D. will plant; joins （ ）2. 下列句子中，will 表示"意愿"而非"将来"的是： A. It will be sunny tomorrow. B. — The box is too heavy. — I will help you carry it. C. My sister will be 14 next year. D. There will be a meeting on Friday. （ ）3. 用 will 或 be going to 的正确形式改写句子： I decide to call him right now.（改为同义句） → I ______ ______ call him right now. A. am going to B. will C. am going to be D. will be （ ）4. 完形填空（节选）： Plants ______ a very important role in our future. Scientists say they ______ many new medicines from plants. A. will play; will produce B. are going to play; produce C. play; will produce D. will play; are producing A. A B. B C. C D. D 考点二：情态动词 should / must / can 表建议与义务 【易错1】情态动词后一律接动词原形。误：You should to study → 正：You should study 【易错2】must 的否定回答要用 needn't（不必），不用 mustn't。误：— Must I go? — No, you mustn't → 正：— No, you needn't. 【易错3】mustn't 意为"禁止"，不是"不必"。mustn't = don't have to 意思完全不同！ 【易错4】should 和 must 语气不同：should 是建议（较轻），must 是命令/义务（较重）。 ◇ 基础题（共4题） （ ）1. We ______ protect plants because they give us oxygen. A. should B. shouldn't C. mustn't D. don't have to （ ）2. You ______ water the plants every day. Too much water is bad for them. A. must B. should C. shouldn't D. can （ ）3. — Can plants make food from sunlight? — Yes, they ______. A. can B. should C. must D. will （ ）4. We ______ cut down too many trees. It's bad for the environment. A. must B. should C. can D. mustn't ▷ 提升题（共4题） （ ）1. — Must I finish the homework today? — No, you ______. You can do it tomorrow. A. mustn't B. needn't C. can't D. shouldn't （ ）2. Plants ______ live without water. It's a fact. A. can B. can't C. shouldn't D. must （ ）3. 改写句子： You should look after the young trees.（改为一般疑问句） → ______ you ______ after the young trees? A. Do; look B. Should; look C. Are; looking D. Will; look （ ）4. 选出语气最强烈的一项： A. You should stop cutting down trees. B. You must stop cutting down trees. C. You can stop cutting down trees. D. You might stop cutting down trees. ★ 拓展题（共4题） （ ）1. 语篇填空（节选）： In the rainforest, we ______ (must / shouldn't) walk carefully because some plants are poisonous. We ______ (can / mustn't) touch any plant we don't know. 正确选项为： A. must; mustn't B. shouldn't; can C. must; can D. shouldn't; mustn't （ ）2. 下列四句中，must 表示"禁止"的是： A. You must be careful with fire. B. You mustn't play with fire. C. You must finish your homework. D. Plants must have sunlight. （ ）3. 短文改错（找出错误并改正）： We should to plant more trees to make the air clean. ______ A. should to plant → should plant B. should plant → should to plant C. 无错误 D. make → making A. A B. B C. C D. D （ ）4. 书面表达微技能： 请用 should / must / can 各写一个关于保护植物的建议句。 下列组合完全正确的是： ① We should water plants regularly. ② We mustn't pick flowers in the park. ③ Plants can produce oxygen for us. A. 仅①正确 B. 仅①②正确 C. ①②③都正确 D. 仅②③正确 考点三：动词不定式作目的状语（to + 动词原形） 【易错1】不定式表目的用 to + 动词原形，不用 for + doing。误：I went there for help him → 正：I went there to help him. 【易错2】不定式作目的状语放在句首时，常用逗号隔开。To pass the exam, he studies hard. 【易错3】逻辑主语必须一致。误：To learn English well, the book is useful → 正：To learn English well, you need a good book. 【易错4】for + 名词表示"用途"，不定式表示"目的"，两者不可混淆。This room is for studying.（用途）I come here to study.（目的） ◇ 基础题（共4题） （ ）1. She gets up early ______ the first bus every morning. A. catch B. to catch C. catching D. for catch （ ）2. They went to the park ______ football. A. play B. to play C. playing D. for play （ ）3. He spoke quietly ______ wake the baby. A. to not B. not to C. don't to D. to don't （ ）4. We study hard ______ good grades. A. get B. getting C. to get D. for get ▷ 提升题（共4题） （ ）1. ______ English well, Lily practises speaking every day. A. Learn B. To learn C. Learning D. For learn （ ）2. The main purpose of the text is ______ people to protect plants. A. tell B. telling C. to tell D. told （ ）3. 句型转换：He came to the library to borrow some books.（对划线部分提问） → ______ did he come to the library ______? A. What; for B. Why; for C. What; to do D. How; for （ ）4. 找出下列句子中的错误并改正： I'm saving money for buying a new bike. ______ A. for buying → to buy B. for buying → buying C. 无错误 D. saving → save ★ 拓展题（共4题） （ ）1. 语篇填空（节选）： Plants collect sunlight ______ (make) sugar. They send water up through the stem ______ (keep) the leaves alive. Roots take in water ______ (help) the plant grow. 正确选项为： A. to make; to keep; to help B. make; keep; help C. making; keeping; helping D. to make; keep; help （ ）2. 下列句子中，to do 不是作目的状语的是： A. I went to the shop to buy some tea. B. She wants to be a scientist. C. To protect plants, we must plant more trees. D. He studies hard to pass the exam. （ ）3. 将两句话合并为一句（用不定式表目的）： Zhang Hao wants to save the environment. He rides a bike to school instead of taking a bus. → Zhang Hao rides a bike to school ______ ______ ______ the environment. A. in order to save B. so that save C. for saving D. to saving （ ）4. 语法辨析： ① I use a knife to cut the paper. ② A knife is a tool for cutting paper. 下列说法正确的是： A. 两句中的 to cut 和 for cutting 可以互换 B. 句①中 to cut 表目的，句②中 for cutting 表用途 C. 两句中的 to cut 和 for cutting 都表目的 D. 句①中 to cut 是宾语 考点四：重点短语辨析（be good for / be bad for / be full of / look after） 【易错1】be good for 的反义是 be bad for / be harmful to，不是 be not good for。 【易错2】be full of 后接名词，不能省略 of。误：The bottle is full → 正：The bottle is full of water. 【易错3】cut down 是"及物"短语动词，宾语可放中间或后面。cut the trees down = cut down the trees. 【易错4】plenty of 既可修饰可数名词也可修饰不可数名词。plenty of water / plenty of trees. ◇ 基础题（共4题） （ ）1. Eating too much sugar ______ your teeth. A. is good for B. is bad for C. is full of D. is plenty of （ ）2. The glass is ______ water. Please be careful. A. fill with B. full of C. plenty of D. good for （ ）3. We should ______ the young trees and water them regularly. A. look at B. look after C. look like D. look for （ ）4. People ______ too many trees, so many animals lost their homes. A. cut down B. cut up C. cut off D. cut out ▷ 提升题（共4题） （ ）1. There are ______ flowers in the garden. They make the air fresh. A. plenty of B. a lot C. many of D. much （ ）2. Reading is ______ your English study. A. bad for B. full of C. good for D. plenty of （ ）3. 用所给短语的正确形式填空： The Amazon rainforest is home to ______ (成千上万的) animals.（提示：thousands of） A. thousand of B. thousands of C. two thousands D. two thousand of A. A B. B C. C D. D （ ）4. 短语辨析： ① look after ② look like ③ look at ④ look for — What does the new plant ______? — It ______ a small tree, but I'm still ______ its name. 正确选项为： A. look like; looks like; looking for B. look after; looks at; looking like C. look at; looks after; looking for D. look for; looks like; looking at ★ 拓展题（共4题） （ ）1. 语篇填空（节选）： Tea is ______ (对……有益) our health. A cup of green tea every day can keep you energetic. China is ______ (充满) tea culture. In Xiamen, you can see people drinking tea ______ (到处). What's more, tea plants need good soil and plenty of water ______ (grow) well. 正确选项为： A. good for; full of; here and there; to grow B. bad for; plenty of; somewhere; growing C. good at; full of; nowhere; to grow D. good for; thousands of; anywhere; growing （ ）2. 下列短语中，与 look after 意思最接近的是： A. take care of B. look at C. look like D. look for （ ）3. 短文改错： If we cut down too many trees, many animals will die out. We must look after the forest. 下列画线部分中，有错误的是： A. cut down B. too many C. will die out D. look after A. A B. B C. C D. 无错误 （ ）4. 语用辨析： — Why do you water the plants every day? — Because water is ______ for plants. Without it, they can't survive. A. good B. bad C. full D. plenty A. A B. B C. C D. D 考点五：介词 for / without 的用法辨析 【易错1】for + 时间段表示动作持续多久。误：I waited here since two hours → 正：I waited here for two hours. 【易错2】without 后接名词或动名词（-ing），不接动词原形。误：without go → 正：without going. 【易错3】for 表用途时 = used for + doing。This knife is for cutting paper. 【易错4】for 和 without 意义相反，注意语境。Plants can't live without water = Plants need water to live. ◇ 基础题（共4题） （ ）1. Plants can't live ______ water or sunlight. A. with B. for C. without D. by （ ）2. We stayed in Qingdao ______ three days during the holiday. A. in B. for C. since D. at （ ）3. This tool is ______ cutting paper. It's very sharp. A. with B. without C. for D. by （ ）4. He left the room ______ saying a word. A. with B. for C. without D. about ▷ 提升题（共4题） （ ）1. ______ enough rain, the crops won't grow well this year. A. With B. For C. Without D. By （ ）2. She has been learning piano ______ she was six years old. A. for B. since C. without D. in （ ）3. 用 for 或 without 填空： ① We need water ______ drinking every day. ② ______ your help, I couldn't finish the work. 正确选项为： A. for; Without B. without; For C. for; With D. without; Without （ ）4. The room is dark. You can't read ______ a light. A. for B. with C. without D. about ★ 拓展题（共4题） （ ）1. 语篇填空（节选）： Plants are very important ______ humans. We can't live ______ them. They provide food and oxygen ______ us to breathe. ______ plants, there would be no life on Earth. 正确选项为： A. for; without; for; Without B. to; with; for; With C. for; with; to; Without D. to; without; to; With （ ）2. 下列句子中，without 的用法与其他三项不同的是： A. Fish can't live without water. B. He went out without his coat. C. She left without saying goodbye. D. This knife is for cutting meat. （ ）3. 句型转换： We can't finish the project without your help.（改为同义句） → We ______ ______ your help to finish the project. A. need; with B. don't need; with C. need; without D. can; with （ ）4. 语法综合： ① The meeting lasted ______ two hours. ② ______ more practice, you will improve your English. ③ What is this machine used ______? 正确选项为： A. for; With; for B. in; Without; to C. for; Without; for D. at; With; to 考点六：not only...but also... 并列结构与词形转换 【易错1】not only...but also... 连接两个并列成分，时态和结构需保持一致。误：She not only sings but also dancing → 正：She not only sings but also dances. 【易错2】not only 置于句首时，句子需部分倒装。Not only did he pass the exam, but he also got full marks. 【易错3】词形转换要注意后缀变化。nature（n.）→ natural（adj.）→ naturally（adv.） 【易错4】healthy 的比较级是 healthier，最高级是 healthiest。不是 more healthy！ ◇ 基础题（共4题） （ ）1. Plants are ______ to humans. They give us food and oxygen. A. use B. useful C. used D. using （ ）2. We should eat ______ food to keep ______. A. health; health B. healthy; healthy C. health; healthy D. healthy; health （ ）3. She is ______ ill, so she can't go to school today. A. health B. healthy C. unhealthy D. healthily （ ）4. The air in the forest is very ______. It's good for our lungs. A. nature B. natural C. naturally D. nation ▷ 提升题（共4题） （ ）1. Tea is ______ good for our health, ______ an important part of Chinese culture. A. not only; but also B. either; or C. neither; nor D. both; and （ ）2. Not only the students but also the teacher ______ about the plant project. A. are excited B. is excited C. were excited D. be excited （ ）3. 词形转换：用括号内词的正确形式填空： The ______ (grow) of plants needs sunlight and water. A. grow B. grows C. growth D. growing （ ）4. 改写句子： The book is interesting. It is also useful.（合并为一句） → The book is ______ ______ interesting ______ ______ useful. A. not only; but also B. either; or C. neither; nor D. both; and ★ 拓展题（共4题） （ ）1. 语篇填空（节选）： Plants are ______ (nature) living things. They not only make the environment beautiful but also keep the air ______ (health). The ______ (important) of plants can never be overlooked. ______ (protect) plants means protecting ourselves. 正确选项为： A. natural; healthy; importance; Protecting B. nature; health; important; Protect C. natural; health; importance; To protect D. natural; healthy; important; Protecting （ ）2. 下列句子中，not only...but also... 使用正确的是： A. He not only plays football but also basketball. B. She not only sings but also she dances. C. Not only they plant trees, but they also water them. D. He not only likes reading but also writing. （ ）3. 综合填空：从方框中选择正确词形填空。 方框：produce, product, useful, health, natural ① This is a ______ made from plants. ② Sunlight is ______ for all living things. ③ We must protect the ______ environment. 正确选项为： A. product; useful; natural B. produce; use; nature C. product; use; natural D. product; useful; nature （ ）4. 语法综合： 下列四句话中，有一句词形转换错误，请找出： A. We should keep healthy by eating well. B. Plants produce oxygen naturally. C. It's important to protect the nature environment. D. This medicine is very useful for colds. A. A B. B C. C D. D 参考答案与解析 考点一 参考答案与解析 【基础题 第1题】 正确答案：A ▸ 错误选项分析：B项 do...do 为一般现在时，与时间状语tomorrow矛盾；C项 will 和 am going to 混用；D项 are doing 为现在进行时表将来，但答句用am going to更一致。 ▸ 考点回归：will 与 be going to 的基本句型结构。 【基础题 第2题】 正确答案：C ▸ 错误选项分析：A项 rains 为一般现在时，不表将来；B项 is raining 为现在进行时，不表将来；D项 will raining 结构错误，will后须接动词原形。 ▸ 考点回归：Look at... 为迹象，用 be going to 表有根据的预测。 【基础题 第3题】 正确答案：B ▸ 错误选项分析：A、C项 there will have / there will have 结构错误，应为 there will be；D项 going to being 中 be 动词形式错误。 ▸ 考点回归：there will be 是固定句型，表示"将有……"。 【基础题 第4题】 正确答案：D ▸ 错误选项分析：A项 have 为一般现在时；B项 will have 语法正确但语境中已说在planning，用be going to更贴切；C项 are having 一般不用于trip。 ▸ 考点回归：be going to 强调事先计划好的安排。 【提升题 第1题】 正确答案：B ▸ 错误选项分析：A项 will 表客观将来或临时决定；C项 can 表能力；D项 must 表必须。句中有Look at the dark clouds（迹象），用be going to。 ▸ 考点回归：be going to 用于有迹象表明即将发生的事。 【提升题 第2题】 正确答案：B ▸ 错误选项分析：A项 will go 语法正确但语境中已booked tickets（事先计划）；C项 goes 为一般现在时；D项 is going 缺少to。 ▸ 考点回归：已订票说明是事先计划，用be going to。 【提升题 第3题】 正确答案：A ▸ 错误选项分析：B项 will not going to 结构混乱；C项 don't will 语序错误；D项 aren't going to 中主语They可以，但原句是will句型改否定。 ▸ 考点回归：will 的否定式为 won't + 动词原形。 【提升题 第4题】 正确答案：C ▸ 错误选项分析：A项 visits 主语是复数；B项 will visits 中will后接了第三人称单数形式；D项 is going to visit 主语是复数，be动词应为are。 ▸ 考点回归：be going to 中 be 动词随主语变化；复数用are。 【拓展题 第1题】 正确答案：B ▸ 错误选项分析：A项 will plant 可以，但join用is going to不太对；C项 plants 为一般现在时不对；D项 will plant 可以但joins也不对。学校计划用is going to，加入活动用will。 ▸ 考点回归：is going to 表计划，will 表临时决定或意愿。 【拓展题 第2题】 正确答案：B ▸ 错误选项分析：A、C、D项中的will均表客观将来（天气、年龄、存在），只有B项是主动提供帮助，表意愿。 ▸ 考点回归：will 可表"意愿"，常用于 offer help 的语境。 【拓展题 第3题】 正确答案：B ▸ 错误选项分析：A项 am going to 虽然也是将来，但句中有right now（立即决定），用will更自然；C、D项多了be。 ▸ 考点回归：临时决定用will；计划好的用be going to。 【拓展题 第4题】 正确答案：A ▸ 错误选项分析：B项 are going to play 可以但produce用一般现在时不对；C项 play用一般现在时不对；D项进行时态不对。 ▸ 考点回归：in the future 提示用一般将来时will play；say后接的从句也用将来时。 考点二 参考答案与解析 【基础题 第1题】 正确答案：A ▸ 错误选项分析：B项 shouldn't 意为不应该，与because从句的肯定逻辑矛盾；C项 mustn't 禁止；D项 don't have to 不必。 ▸ 考点回归：should 表建议"应该"，语气适中。 【基础题 第2题】 正确答案：C ▸ 错误选项分析：A项 must 语气过强；B项 should 建议每天浇水，与后文too much water is bad矛盾；D项 can 能。 ▸ 考点回归：shouldn't 表"不应该"，符合语境逻辑。 【基础题 第3题】 正确答案：A ▸ 错误选项分析：B项 should 表建议；C项 must 表必须；D项 will 表将来。问句can提问能力，肯定回答用can。 ▸ 考点回归：can 表能力，意为"能够"。 【基础题 第4题】 正确答案：D ▸ 错误选项分析：A项 must 必须砍树，逻辑反了；B项 should 应该砍树，逻辑反了；C项 can 能砍树，不符合环保语境。 ▸ 考点回归：mustn't 表"禁止"，语气最强。 【提升题 第1题】 正确答案：B ▸ 错误选项分析：A项 mustn't 意为禁止，不是"不必"；C项 can't 不能；D项 shouldn't 不应该。must提问的否定回答用needn't。 ▸ 考点回归：Must I...? 否定回答：No, you needn't. 【提升题 第2题】 正确答案：B ▸ 错误选项分析：A项 can 能，与事实矛盾；C项 shouldn't 不应该，逻辑不对；D项 must 必须，与fact矛盾。 ▸ 考点回归：can't 表"不能"，陈述客观事实。 【提升题 第3题】 正确答案：B ▸ 错误选项分析：A项 Do you look 中look after虽为原形但should是情态动词，疑问句应提前should；C、D项结构错误。 ▸ 考点回归：should 的疑问句把 should 提前，后接动词原形。 【提升题 第4题】 正确答案：B ▸ 错误选项分析：A项 should 语气较轻；C项 can 表能力/许可；D项 might 表可能。must语气最强，表"必须"。 ▸ 考点回归：must > should > can 语气递减。 【拓展题 第1题】 正确答案：A ▸ 错误选项分析：B项 shouldn't walk 逻辑反了（应该小心）；C项 can touch 与语境矛盾（不能碰）；D项逻辑混乱。 ▸ 考点回归：must 表"必须"，mustn't 表"禁止"。 【拓展题 第2题】 正确答案：B ▸ 错误选项分析：A项 must be careful 表"必须小心"；C项 must finish 表"必须完成"；D项 must have 表"必须有"。只有B项mustn't表禁止。 ▸ 考点回归：mustn't = 禁止，其他must句均表"必须"。 【拓展题 第3题】 正确答案：A ▸ 错误选项分析：B项 should plant 本身没错但原句有to，应去掉to；C项无错误不对；D项making不对。 ▸ 考点回归：情态动词(should/must/can)后接动词原形，不接to。 【拓展题 第4题】 正确答案：C ▸ 错误选项分析：① should water 正确（建议）；② mustn't pick 正确（禁止）；③ can produce 正确（能力）。三句均正确。 ▸ 考点回归：should表建议，mustn't表禁止，can表能力。 考点三 参考答案与解析 【基础题 第1题】 正确答案：B ▸ 错误选项分析：A项 catch 动词原形不能直接作目的状语；C项 catching 为动名词/现在分词；D项 for catch 结构错误，for后接名词或动名词。 ▸ 考点回归：to + 动词原形 表目的，意为"为了赶上……"。 【基础题 第2题】 正确答案：B ▸ 错误选项分析：A项 play 动词原形不能作目的状语；C项 playing 为动名词；D项 for play 结构错误。 ▸ 考点回归：to play 表目的，意为"为了踢球"。 【基础题 第3题】 正确答案：B ▸ 错误选项分析：A项 to not 语序错误；C项 don't to 结构错误；D项 to don't 结构错误。否定形式为not to do。 ▸ 考点回归：不定式的否定：not to + 动词原形。 【基础题 第4题】 正确答案：C ▸ 错误选项分析：A项 get 动词原形不能作目的状语；B项 getting 为动名词；D项 for get 结构错误。 ▸ 考点回归：to get 表目的，意为"为了取得好成绩"。 【提升题 第1题】 正确答案：B ▸ 错误选项分析：A项 Learn 动词原形不能放句首作目的状语；C项 Learning 为动名词，表原因或伴随；D项 For learn 结构错误。 ▸ 考点回归：不定式放句首表目的，意为"为了学好英语"。 【提升题 第2题】 正确答案：C ▸ 错误选项分析：A项 tell 动词原形不能作表语；B项 telling 动名词一般不这样用；D项 told 过去分词。主语是purpose，用to do作表语。 ▸ 考点回归：主语是purpose/aim/goal时，表语用to do。 【提升题 第3题】 正确答案：A ▸ 错误选项分析：B项 Why...for 搭配不当；C项 What...to do 语义重复；D项 How...for 搭配不当。对目的提问用What...for。 ▸ 考点回归：What...for = Why，对目的提问。 【提升题 第4题】 正确答案：A ▸ 错误选项分析：B项 for buying 在save money语境中，purpose应用to buy；C项无错误不对；D项saving不对。 ▸ 考点回归：表目的用to do，不用for doing（除非表用途）。 【拓展题 第1题】 正确答案：A ▸ 错误选项分析：B、C、D项分别用了make/keep/help的动名词或原形形式，不符合不定式作目的状语的要求。 ▸ 考点回归：不定式to do表目的，三个空均用to do形式。 【拓展题 第2题】 正确答案：B ▸ 错误选项分析：A、C、D项中的to do均表目的。B项 wants to be 中to be是宾语（want的宾语），不是目的状语。 ▸ 考点回归：区分不定式作目的状语 vs 作动词宾语。 【拓展题 第3题】 正确答案：A ▸ 错误选项分析：B项 so that 后接从句，不接动词原形；C项 for saving 表用途，不表目的；D项 to saving 中介词to后不接doing。 ▸ 考点回归：in order to do 强调目的，可放句首或句中。 【拓展题 第4题】 正确答案：B ▸ 错误选项分析：A项说可以互换，但两者功能不同；C项都说表目的不对；D项说句①中to cut是宾语不对。 ▸ 考点回归：to do 表目的（为什么切），for doing 表用途（用来切什么）。 考点四 参考答案与解析 【基础题 第1题】 正确答案：B ▸ 错误选项分析：A项 is good for 对牙齿好，与too much sugar矛盾；C项 is full of 充满；D项 is plenty of 不能这样用。 ▸ 考点回归：be bad for 意为"对……有害"。 【基础题 第2题】 正确答案：B ▸ 错误选项分析：A项 fill with 应为被动is filled with或full of；C项 plenty of 大量，不能直接跟在is后；D项 is good for 对……有益。 ▸ 考点回归：be full of 意为"充满……"。 【基础题 第3题】 正确答案：B ▸ 错误选项分析：A项 look at 看；C项 look like 看起来像；D项 look for 寻找。照顾树苗用look after。 ▸ 考点回归：look after = take care of 照顾。 【基础题 第4题】 正确答案：A ▸ 错误选项分析：B项 cut up 切碎；C项 cut off 切断；D项 cut out 剪下/停止。砍伐树木用cut down。 ▸ 考点回归：cut down 意为"砍伐"。 【提升题 第1题】 正确答案：A ▸ 错误选项分析：B项 a lot 后需加of才能接名词；C项 many of 后接特指的复数名词；D项 much 修饰不可数名词。 ▸ 考点回归：plenty of 既可修饰可数也可修饰不可数名词。 【提升题 第2题】 正确答案：C ▸ 错误选项分析：A项 bad for 有害；B项 full of 充满；D项 plenty of 大量。读书对英语学习有益。 ▸ 考点回归：be good for 意为"对……有益"。 【提升题 第3题】 正确答案：B ▸ 错误选项分析：A项 thousand of 缺少s；C项 two thousands 有s时不能加具体数字；D项 two thousand of 多了of。 ▸ 考点回归：thousands of 表"成千上万的"；具体数字+thousand不加s。 【提升题 第4题】 正确答案：A ▸ 错误选项分析：B、C、D项中的短语搭配和词义均不符合语境。look like问外貌/样子，look for表寻找。 ▸ 考点回归：look like 看起来像；look for 寻找。 【拓展题 第1题】 正确答案：A ▸ 错误选项分析：B项 bad for 逻辑反了；C项 good at 擅长，不修饰health；D项 thousands of 不修饰culture。 ▸ 考点回归：be good for 对……有益；be full of 充满；here and there 到处。 【拓展题 第2题】 正确答案：A ▸ 错误选项分析：B项 look at 看；C项 look like 看起来像；D项 look for 寻找。take care of = look after。 ▸ 考点回归：look after = take care of 照顾。 【拓展题 第3题】 正确答案：D ▸ 错误选项分析：A、B、C项均语法正确且符合语境。cut down砍伐、too many太多、die out灭绝、look after照顾均使用正确。 ▸ 考点回归：四个短语在语境中均使用无误。 【拓展题 第4题】 正确答案：A ▸ 错误选项分析：B项 bad 有害，与语境反了；C项 full 满的；D项 plenty 充足的。水对植物是good（有益的）。 ▸ 考点回归：be good for 对……有益。 考点五 参考答案与解析 【基础题 第1题】 正确答案：C ▸ 错误选项分析：A项 with 带有，与can't live矛盾；B项 for 为了；D项 by 通过。没有水和阳光植物无法生存。 ▸ 考点回归：without 意为"没有"，表否定条件。 【基础题 第2题】 正确答案：B ▸ 错误选项分析：A项 in 后接大地点或月份等；C项 since 后接时间点（如since Monday）；D项 at 后接具体时刻。for + 时间段。 ▸ 考点回归：for + 时间段 表示动作持续多久。 【基础题 第3题】 正确答案：C ▸ 错误选项分析：A项 with 用；B项 without 没有；D项 by 通过。is for doing 表用途。 ▸ 考点回归：for + 名词/动名词 表用途。 【基础题 第4题】 正确答案：C ▸ 错误选项分析：A项 with 带有，与left（离开）矛盾；B项 for 为了；D项 about 关于。没有说一句话就离开了。 ▸ 考点回归：without + 名词/动名词 意为"没有做某事"。 【提升题 第1题】 正确答案：C ▸ 错误选项分析：A项 With 有充足雨水，与won't grow well矛盾；B项 For 为了；D项 By 通过。没有足够雨水庄稼长不好。 ▸ 考点回归：without 表否定条件，符合语境逻辑。 【提升题 第2题】 正确答案：B ▸ 错误选项分析：A项 for 后接时间段，不接since + 时间点；C项 without 没有；D项 in 后接时间段表"在……之后"。 ▸ 考点回归：since + 时间点 表示"自从……以来"。 【提升题 第3题】 正确答案：A ▸ 错误选项分析：B项 without; For 第一空应为for（为了）；C项 for; With 第二空应为Without；D项逻辑全反。 ▸ 考点回归：for drinking 表用途；Without your help 表没有你的帮助。 【提升题 第4题】 正确答案：C ▸ 错误选项分析：A项 for 为了；B项 with 有灯才能读，与can't矛盾；D项 about 关于。没有灯不能读书。 ▸ 考点回归：without a light = 没有灯。 【拓展题 第1题】 正确答案：A ▸ 错误选项分析：B项 to; with 第二空应为without；C项 for; with 第二空应为without；D项 With 与there would be no矛盾。 ▸ 考点回归：important for humans; without them; provide for us; Without plants。 【拓展题 第2题】 正确答案：D ▸ 错误选项分析：A、B、C项中的without均表"没有"。D项 is for cutting 中for表用途，不是without。 ▸ 考点回归：区分for（用途）与without（没有）的不同含义。 【拓展题 第3题】 正确答案：A ▸ 错误选项分析：B项 don't need; with 双重否定混乱；C项 need; without 逻辑反了；D项 can; with 语义不通。 ▸ 考点回归：without your help = need your help（双重否定转换）。 【拓展题 第4题】 正确答案：C ▸ 错误选项分析：A项 for; With 第二空应为Without；B项 in; Without 第一空for接时间段；D项 at; With 搭配不对。 ▸ 考点回归：for two hours 持续两小时；Without practice 没有练习；used for 用途。 考点六 参考答案与解析 【基础题 第1题】 正确答案：B ▸ 错误选项分析：A项 use 动词/名词；C项 used 过去式/过去分词；D项 using 现在分词。are useful 有用的。 ▸ 考点回归：useful adj. 有用的，be useful to 对……有用。 【基础题 第2题】 正确答案：B ▸ 错误选项分析：A项 health; health 均为名词，不能修饰food和keep；C项 health修饰food不对；D项 keep health 应为keep healthy。 ▸ 考点回归：healthy food 健康食品；keep healthy 保持健康。 【基础题 第3题】 正确答案：C ▸ 错误选项分析：A项 health 名词；B项 healthy 健康的，与ill矛盾；D项 healthily 副词。unhealthy = 不健康的。 ▸ 考点回归：unhealthy adj. 不健康的。 【基础题 第4题】 正确答案：B ▸ 错误选项分析：A项 nature 名词；C项 naturally 副词；D项 nation 名词。natural air 自然的空气。 ▸ 考点回归：natural adj. 自然的；naturally adv. 自然地。 【提升题 第1题】 正确答案：A ▸ 错误选项分析：B项 either...or 或者……或者；C项 neither...nor 既不……也不；D项 both...and 两者都（不用于not only句型）。 ▸ 考点回归：not only...but also... 不仅……而且……。 【提升题 第2题】 正确答案：B ▸ 错误选项分析：A项 are excited 主语the teacher是单数；C项 were excited 主谓一致错误；D项 be excited 不随主语变化。not only...but also... 就近原则。 ▸ 考点回归：not only...but also... 遵循就近原则，谓语动词与最近的主语一致。 【提升题 第3题】 正确答案：C ▸ 错误选项分析：A项 grow 动词原形；B项 grows 动词三单；D项 growing 现在分词。growth n. 生长。 ▸ 考点回归：grow v. → growth n. 词形转换。 【提升题 第4题】 正确答案：A ▸ 错误选项分析：B项 either...or 或者……或者；C项 neither...nor 既不……也不；D项 both...and 不用于not only句型。 ▸ 考点回归：not only...but also... 连接两个并列形容词。 【拓展题 第1题】 正确答案：A ▸ 错误选项分析：B项 nature 应为natural；C项 important 应为importance（名词作主语）；D项 health应为healthy（keep healthy）。 ▸ 考点回归：natural adj.；healthy adj.；importance n.；protecting动名词作主语。 【拓展题 第2题】 正确答案：D ▸ 错误选项分析：A项 basketball 前缺like；B项 she dances 多了she；C项 they plant 应倒装。D项并列两个动名词正确。 ▸ 考点回归：not only...but also... 连接两个并列成分，结构须一致。 【拓展题 第3题】 正确答案：A ▸ 错误选项分析：B项 use 应为useful；C项 use 应为useful，nature应为natural；D项 nature应为natural。 ▸ 考点回归：product n. 产品；useful adj. 有用的；natural adj. 自然的。 【拓展题 第4题】 正确答案：C ▸ 错误选项分析：A、B、D项均正确。C项 nature environment 应为 natural environment（形容词修饰名词）。 ▸ 考点回归：nature n. → natural adj. 词形转换。 — 第 页 — 学科网（北京）股份有限公司 $