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寒假预习:专题03 Unit 2 You can make a difference课本知识预习+知识演练2025-2026学年五年级下册英语(外研版)
一、重点词汇
difference (n.) 不同,差别 help (v./n.) 帮助 people (n.) 人们
animal (n.) 动物 plant (n.) 植物 protect (v.) 保护
save (v.) 拯救,节约 earth (n.) 地球 environment (n.) 环境
reuse (v.) 重复使用 recycle (v.) 回收利用 waste (v./n.) 浪费
clean (adj./v.) 干净的;打扫 dirty (adj.) 脏的 useful (adj.) 有用的
harmful (adj.) 有害的 easy (adj.) 容易的 difficult (adj.) 困难的
start (v.) 开始 stop (v.) 停止 together (adv.) 一起
二、重点短语
make a difference 产生影响,有所作为 help people 帮助人们
protect animals 保护动物 protect the environment 保护环境
save water 节约用水 save energy 节约能源
reuse paper 重复使用纸张 recycle bottles 回收瓶子
stop wasting 停止浪费 keep clean 保持干净
pick up 捡起,拾起 throw away 扔掉
work together 一起努力 start with 从……开始
be useful 有用的 be harmful to 对……有害
三、核心句型
句型1:情态动词can表建议、能力
1. 肯定句:主语 + can + 动词原形 + 其他(表达“能做某事”“可以做某事”)
例:You can make a difference.(你可以有所作为。)
例:We can help people.(我们可以帮助人们。)
2. 否定句:主语 + can't (cannot) + 动词原形 + 其他(表达“不能做某事”)
例:We can't throw away bottles.(我们不能扔掉瓶子。)
3. 问答句型:— What can we do? — We can...(询问能做什么,提出建议)
例:— What can we do to protect the environment? (我们能做什么来保护环境?)
— We can recycle bottles.(—我们可以回收瓶子。)
句型2:动词不定式to do—— 表目的、动作
1. 基本结构:主语 + 动词 + to + 动词原形(表目的,“做某事是为了……”)
例:We can do many things to help.(我们可以做很多事情来帮忙。)
例:I want to protect animals.(我想保护动物。)
2. 常用搭配:It's easy to... / It's difficult to...(“做某事很容易/困难”)
例:It's easy to reuse paper.(重复使用纸张很容易。)
句型3:祈使句—— 提出倡议、发出指令
1. 肯定祈使句:动词原形 + 其他(呼吁、倡议做某事)
例:Protect the earth!(保护地球!)
例:Work together!(一起努力!)
2. 否定祈使句:Don't + 动词原形 + 其他(呼吁不要做某事)
例:Don't waste water!(不要浪费水!)
句型4:be动词短语句型—— 描述事物的影响或状态
1. 主语 + be + harmful to + 其他(“某物对……有害”)
例:Dirty water is harmful to fish.(脏水对鱼有害。)
2. 主语 + be + useful + 其他(“某物是有用的”)
例:Reused paper is useful.(重复使用的纸张是有用的。)
知识演练
一、词汇填空(每空一词)
1. We can make a __________ (差别) to help the earth.
2. It's our duty to __________ (保护) animals and plants.
3. Don't __________ (浪费) water. It's important for us.
4. We should __________ (回收利用) bottles and paper to protect the environment.
5. Dirty air is __________ (有害的) to our health.
二、短语匹配
( )1. make a difference A. 保护环境
( )2. protect the environment B. 产生影响,有所作为
( )3. save water C. 回收瓶子
( )4. recycle bottles D. 节约用水
( )5. stop wasting E. 停止浪费
三、句型转换(每空一词)
1. We can protect animals.(改为否定句)
— We __________ __________ animals.
2. They can recycle paper to help the environment.(改为一般疑问句并作肯定回答)
— __________ they __________ paper to help the environment?
— Yes, they __________.
3. It's easy to reuse paper.(改为否定句)
— It __________ __________ to reuse paper.
4. We can do many things to help.(对划线部分提问)
— __________ __________ we do to help?
5. Don't throw away bottles.(改为肯定祈使句)
— __________ __________ bottles.
四、判断句子语法使用的正(T)误(F)
( )1. You can make a difference to help the earth.
( )2. We can't reuse paper. It's difficult.
( )3. Dirty water is harmful to fish and plants.
( )4. Don't save energy. We have lots of it.
( )5. We can work together to protect the environment.
五、补全对话(每空一词)
1. —What __________ we do to protect the earth?
—We can save water.(—我们能做什么来保护地球?—我们可以节约用水。)
2. —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。)
3. —It's easy to __________ paper.
—Yes, we can reuse it many times.(—重复使用纸张很容易。—是的,我们可以重复使用很多次。)
4. —Let's work __________ to protect animals.
—Good idea!(—让我们一起努力保护动物吧。—好主意!)
5. —Don't __________ water. It's important.
—Sorry, I won't.(—不要浪费水,它很重要。—对不起,我不会了。)
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(呼吁不要做某事)
( )4. Don't waste water! D. 肯定祈使句(发出倡议)
( )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, earth, the, protect (?)
→ __________________________________________________________
2. make, a, we, difference, can (.)
→ __________________________________________________________
3. reuse, easy, it's, to, paper (.)
→ __________________________________________________________
4. throw, don't, away, bottles, the (.)
→ __________________________________________________________
5. together, work, we, to, can, environment, the, protect (.)
→ __________________________________________________________
答案
一、词汇填空
1. difference 2. protect 3. waste 4. recycle 5. harmful
二、短语匹配
1.B 2.A 3.D 4.C 5.E
三、句型转换
1. can't protect 2. Can; recycle; can 3. isn't easy 4. What can 5. Pick up
四、判断句子语法使用的正(T)误(F)
1. T 2. F 3. T 4. F 5. T
五、补全对话
1. can 2. can't 3. reuse 4. together 5. waste
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 earth?
2. We can make a difference.
3. It's easy to reuse paper.
4. Don't throw away the bottles.
5. We can work together to protect the environment.
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