寒假预习:专题04 Unit 2 You can make a difference 语法+知识演练(讲义)-2025-2026学年外研版(三起)英语五年级下册

2026-01-26
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寒假预习:专题04 Unit 2 You can make a difference语法讲义+知识演练 2025-2026学年五年级下册英语(外研版) 核心语法点1:情态动词can表建议、能力 1. 语法含义:can此处重点表“建议、可以”,用于提出环保相关倡议,也可表“能力”,描述能为环保做的事,是本单元核心语法。 2. 关键规则: ① 肯定句(主语 + can + 动词原形 + 其他); ② 否定句(主语 + can't (cannot) + 动词原形 + 其他); ③ 一般疑问句(Can + 主语 + 动词原形 + 其他?),回答用can/can't呼应。 3. 课本原句例句: — You can make a difference.(你可以有所作为。) — What can we do to protect the environment? — We can recycle bottles.(—我们能做什么来保护环境?—我们可以回收瓶子。) — We can't throw away bottles.(我们不能扔掉瓶子。) 4. 易错提醒:can后面永远接动词原形,不能接ing形式或动词过去式,如“Can we recycling?”是错误的。 核心语法点2:动词不定式to do表目的 1. 语法含义:本单元重点用于说明“做某事是为了保护环境、帮助他人”,结构为“动词 + to + 动词原形”,to译为“为了”。 2. 关键规则:不定式to do 跟在动词(do, help, protect, save等)后面,表目的;to后面必须接动词原形,不能省略to(本单元无省略to的情况)。 3. 课本原句例句: — We can do many things to help.(我们可以做很多事情来帮忙。) — I want to protect animals.(我想保护动物。) — What can we do to protect the earth?(我们能做什么来保护地球?) 4. 易错提醒:牢记“to + 动词原形”结构,避免出现“to + 动词ing”或省略to的错误,如“do many things help”是错误的。 核心语法点3:祈使句 1. 语法含义:用于发出环保倡议、呼吁他人做/不做某事,语气直接、有力,是本单元环保主题的重点句型。 2. 关键规则: ① 肯定祈使句(动词原形 + 其他),呼吁做环保相关的事; ② 否定祈使句(Don't + 动词原形 + 其他),呼吁不做破坏环境的事。 3. 课本原句例句: — Protect the earth!(保护地球!)(肯定祈使句) — Don't waste water!(不要浪费水!)(否定祈使句) — Work together!(一起努力!)(肯定祈使句) 4. 易错提醒:否定祈使句开头只能用Don't,不能用Can't;肯定祈使句开头用动词原形,无需加主语。 核心语法点4:be动词短语句型 1. 语法含义:用于描述事物对环境、生物的影响,或事物的状态,本单元重点是be harmful to(有害的)和be useful(有用的)。 2. 关键规则:主语 + be动词(is/are) + 形容词短语(harmful to.../useful) + 其他;主语是单数用is,复数用are。 3. 课本原句例句: — Dirty water is harmful to fish.(脏水对鱼有害。) — Reused paper is useful.(重复使用的纸张是有用的。) — Dirty air is harmful to our health.(脏空气对我们的健康有害。) 核心语法点5:情态动词can的特殊疑问句 1. 语法含义:结合疑问词what,询问“我们能做什么来保护环境”,是本单元最常用的问答句型。 2. 关键规则:疑问词(What) + can + 主语 + 动词原形 + to do(表目的) + 其他?回答用“We can + 动词原形 + 其他”。 3. 课本原句例句: — What can we do to protect the environment? — We can recycle bottles.(—我们能做什么来保护环境?—我们可以回收瓶子。) 知识演练 一、语法填空(每空一词) 1. We __________ (can) protect the earth by saving water.(我们可以通过节约用水来保护地球。) 2. I want __________ (protect) animals. They are our friends.(我想保护动物,它们是我们的朋友。) 3. __________ (protect) the environment! It's our duty.(保护环境!这是我们的责任。) 4. Dirty water __________ (be) harmful to fish and plants.(脏水对鱼和植物有害。) 5. What can we do __________ (help) the earth?(我们能做什么来帮助地球?) 二、单项选择 ( )1. —What _____ we do to protect the environment? —We can recycle paper. A. can B. do C. are ( )2. She wants ________ reuse paper to protect the earth. A. to B. / C. for ( )3. —Can we throw away bottles? —No, we _______. We can recycle them. A. can B. can't C. don't ( )4. ________ waste water! It's important for us. A. Don't B. Can't C. Do ( )5. Reused paper ________ useful. We can use it again. A. is B. are C. be 三、句型转换(每空一词) 1. We can recycle bottles.(改为否定句) — We __________ __________ bottles. 2. I want to protect animals.(改为一般疑问句并作肯定回答) — __________ you want __________ protect animals? — Yes, I __________. 3. Protect the earth!(改为否定祈使句) — __________ __________ the earth! 4. We can do many things to help the earth.(对划线部分提问) — __________ __________ we do to help the earth? 5. Dirty water is harmful to fish.(改为一般疑问句并作否定回答) — __________ dirty water harmful to fish? — No, it __________. 四、判断句子语法使用的正(T)误(F) ( )1. We can make a difference to help the earth. ( )2. She wants to protecting animals. ( )3. Don't recycle bottles. Throw them away. ( )4. Dirty air is harmful to our health. ( )5. What can we do help the environment? 五、补全对话 1. —What __________ we do to protect the environment? —We can save water.(—我们能做什么来保护环境?—我们可以节约用水。) 2. —I want __________ reuse paper. —Good idea! It's easy.(—我想重复使用纸张。—好主意!这很容易。) 3. —Can we throw away bottles? —No, we __________. We can recycle them.(—我们能扔掉瓶子吗?—不,不能。我们可以回收它们。) 4. —__________ the earth! —Yes, we should work together.(—保护地球!—是的,我们应该一起努力。) 5. —Dirty water is harmful __________ fish. —We should keep water clean.(—脏水对鱼有害。—我们应该保持水干净。) 六、语法匹配 ( )1. You can make a difference. A. 动词不定式to do(表目的) ( )2. We can do many things to help. B. 情态动词can表建议/能力 ( )3. Protect the earth! C. 否定祈使句(环保倡议) ( )4. Don't waste water! D. 肯定祈使句(环保倡议) ( )5. Dirty water is harmful to fish. E. be动词短语(描述影响) 七、连词成句 1. can, we, what, do, to, environment, the, protect (?) → ________________________________________________________ 2. want, I, to, animals, protect (.) → ________________________________________________________ 3. waste, don't, water (.) → ________________________________________________________ 4. is, harmful, dirty, to, water, fish (.) → ________________________________________________________ 5. can, we, paper, recycle, to, help, earth, the (.) → ________________________________________________________ 答案 一、语法填空 1. can 2. to protect 3. Protect 4. is 5. to help 二、单项选择 1. A 2. A 3. B 4. A 5. A 三、句型转换 1. can't recycle 2. Do; to; do 3. Don't protect 4. What can 5. Is; isn't 四、判断句子语法使用的正(T)误(F) 1. T 2. F 3. F 4. T 5. F 五、补全对话 1. can 2. to 3. can't 4. Protect 5. to 六、语法匹配 1.B 2.A 3.D 4.C 5.E 七、连词成句 1. What can we do to protect the environment? 2. I want to protect animals. 3. Don't waste water. 4. Dirty water is harmful to fish. 5. We can recycle paper to help the earth. ( 1 ) 学科网(北京)股份有限公司 $

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寒假预习:专题04 Unit 2 You can make a difference 语法+知识演练(讲义)-2025-2026学年外研版(三起)英语五年级下册
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寒假预习:专题04 Unit 2 You can make a difference 语法+知识演练(讲义)-2025-2026学年外研版(三起)英语五年级下册
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寒假预习:专题04 Unit 2 You can make a difference 语法+知识演练(讲义)-2025-2026学年外研版(三起)英语五年级下册
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