Unit 2 A green life（易错题专项训练·语法提升）英语外研版三起五年级上册（新教材）

**基本信息** 以“绿色生活”为主题，聚焦祈使句和情态动词should易错题，通过口诀、表格系统梳理语法规则，分层训练提升语言应用与学习能力。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |祈使句|3类小练笔（选择/填空/句型转换）+综合训练，涵盖Do/Be/Let型及否定|“三类型（Do/Be/Let）+否定口诀（Don't开头，No+doing）”，Let后接宾格|从类型划分到否定转换，结合“禁止/建议”语境实现语法规则到应用迁移| |情态动词should|2类小练笔（单选/选词填空）+综合训练|“动词原形+否定（shouldn't）/疑问（Should+主语）”结构，回答用should/shouldn't|从基本用法到建议表达，紧扣“绿色生活”主题强化义务与责任语境应用|

Unit 2 A green life 专题02 语法提升·易错题专项训练 · 内容导航 · 祈使句 情态动词should的用法 高频易错点、易错点提示、小练笔、答题点拨 易错精讲 祈使句高频易错点01 用于表达命令、请求、建议、劝告或禁止等意义的句子叫祈使句。其主语常为第二人称且省略（let’s 除外），一般以动词原形开头，没有时态和数的变化。 · 祈使句类型：祈使句三类型，Let，Do型，还有be 类型 句型结构 例句 Do型祈使句 动词原形+其他. Hurry up! 快点。 Put your hand up to speak. 发言要举手。 Be型祈使句 Be+形容词. Be quiet.保持安静 Be a good boy.做个好孩子。 Let型祈使句 Let's/Let me+动词原形+其他. Let me help you.让我帮你。 Let’s play football.让我们一起踢足球吧。 · 否定祈使句：否定前面加don't, 想要客气 please 类型 句型结构 例句 Do型祈使句 Don't+动词原形+其他. Don’t run in the class.不要在班里乱跑。 Be型祈使句 Don't+be+形容词. Don't be late for class. 不要上课迟到。 示例： Open the door！ →Don't open the door！ Close the window！→Don't close the window！ Be quiet!→ Don't be quiet! · 拓展：No型祈使句 （1）No+动词-ing形式+其他. （2）No+名词+其他. 例句：No fishing. 禁止钓鱼 No photos. 禁止拍照；请勿拍照 易错点提示 注意： (1) Let 后要加人称代词的宾格形式。 (2) No + 动词 - ing 形式.=Don’t + 动词原形. 例：No fishing! =Don’t fish! 禁止钓鱼！ (3) 回答祈使句的肯定形式一般用 will，回答祈使句的否定形式一般用 won’t。 记忆口诀： 祈使句，有威力，请求、命令或建议。 主语 you 常省去，动词原形开头记。 否定式要注意，句首要把 Don’t 立。 语气委婉 please，句首、句末没关系。 No doing! 需谨记，表示 “禁止” 不小觑。 小练笔 一、从括号里选择合适的内容，补全句子。 1. Please ______ (use/using) a glass bottle instead of (代替) a plastic one. 2. ______ (Do/Don’t) throw things everywhere. 3. ______ (Use/Using) your own bag in the supermarket. 4. Don’t ______ (throw/throws) old books away. We can reuse them. 5. ______ (Give/To give) your old clothes to the children in need. 二、单项选择。 ( ) 1. ______ swim on your way home. It’s really dangerous. A. Don’t B. Doesn’t C. Not ( ) 2. ______ trying and do your best. A. Keeps B. Keeping C. Keep ( ) 3. No ______ on the bus! A. eat B. eats C. eating ( ) 4. Let ______ help you. A. I B. me C. my ( ) 5. ______ throw the can on the floor. A. No B. Don’t C. Not 三、按要求完成各题。（每空一词） 1. You should be quiet!（改为祈使句） ________ ________, please! 2. Don’t take photos.（改为同义句） ________ photos. 3. Take some cash with you when you travel to other countries.（改为否定句） ________ take ________ cash with you when you travel to other countries. 4. Be active, please.（改为否定句） ________ ________ active, please. 5. Let him see a film.（改为否定句） (1) ________ let ________ ________ a film. (2) Let ________ ________ ________ a film. 6. Don’t be late again.（作否定回答） 情态动词should的用法高频易错点02 should 是情态动词，后接动词原形，无人称和数的变化，否定形式为 should not（缩写 shouldn’t）。这本单元中should表示 “应该、应当”用于提出建议、义务或责任，语气比 must 委婉。 易错点提示 核心考点： · 后接动词原形，如：should do（不能说 should to do /should does） · 否定句：主语 + shouldn’t + 动词原形 例句：You shouldn’t pick flowers in the park. · 一般疑问句：Should + 主语 + 动词原形？ 回答：Yes, 主语 + should. / No, 主语 + shouldn’t. 例句：— Should we save water? 我们应该节约用水吗？ —Yes, we should. 是的，应该。 小练笔 一、单项选择。 ( ) 1．You ______ watch TV while eating. It’s not polite. A．should B．shouldn’t C．can ( ) 2．Everyone ______ keep a healthy diet. A．shouldn’t B．should C．do ( ) 3．We ______ read in bed. A．should B．must C．shouldn’t ( ) 4．You ______ find the answer by yourself. A．should B．are C．do 二、选词填空。 should   shouldn’t 1．There is much candy on the plate. You eat too much. 2．There are fresh tomatoes. You eat them. 3．You watch TV when you are eating. 4．It’s hot. You drink some water. 5．The apples are sweet. You have one. 6．You put too much salt in the food. 综合训练 一、从方框中选择合适的单词，补全句子。 waste off throw seat begins 1. Don’t ______ milk boxes everywhere (到处). 2. Our class ______ at half past eight. 3. We can use food ______ for plants in the garden. 4. Give your ______ to people in need. 5. It’s hot. You can take ______ your cap. 二、在横线上填入适当的介词(for, to, about, of )。 1. Tell us more ______ Earth Day and the ways we can help the earth. 2. Smoking is bad ______ the children. 3. I’m looking forward ______ visiting Dalian. 4. We can make use ______ old newspapers to clean windows. 5. It is good ______ us to do exercise every day. 三、读一读，根据语境选择正确的答案。 ( ) 1. —______ throw away the box. I can make use of it. —OK. A. Please B. Don’t C. Let’s ( ) 2. Grandma, please give ______ plastic bottles to me. A. this B. that C. those ( ) 3. ______ give the food waste to me. I want to feed the homeless (无家可归的) cats. A. Don’t B. Be C. Please ( ) 4. I use old boxes to make houses for the birds. They can keep them ______. A. warm B. away C. useful ( ) 5. Let’s ______ a house for birds. A. makes B. made C. make ( ) 6. Each of us ______ a box of milk every day. A. have B. having C. has ( ) 7. This ______ the house for my pet dog. It looks warm and beautiful. A. am B. is C. are ( ) 8. ______ is coming. The weather gets colder and colder. A. Spring B. Summer C. Winter ( ) 9. Let’s start now for ______ green world. A. a B. an C. / ( ) 10. —What does this word ______? —I don’t understand it at all now. A. make B. use C. mean 四、用括号中所给单词的适当形式填空。 1. After recycling, the old milk box gets a new ______ (begin). 2. Each of us ______ (have) four classes in the morning. 3. The paper from milk boxes can be made into different ______ (newspaper). 4. We should put used paper into the ______ (recycle) box to protect the environment. 5. It is interesting ______ (turn) old things into new things. 五、从方框中选择合适的单词，补全短文。 plastic useful Don’t take waste Welcome to our school green class. Look at our 1. ______ bottles and boxes. They are not rubbish. They are 2. ______. We can make many nice things with them. We can make bags, boxes or small gifts. 3. ______ throw them away. We should 4. ______ care of our earth. Let’s reuse (重新利用) 5. ______ and help the world. It’s good to protect our home. 六、【新语篇·倡议书】阅读 Amy 的倡议书，根据倡议书内容，判断句子正 (T) 误 (F)。 Let’s Recycle Old Cans! ( ) 1. We never throw away cans every year. Each of us drinks from cans every day, and we throw away millions of (数百万的) cans every year! But we don’t have to let them go to waste. Old cans can turn into something new and useful, like pen holders (笔筒), small flower pots (花盆), or even cute desk organizers (桌面收纳盒). It’s easy to recycle a can in just three steps: · Wash the can with clean water and dry it well. · Decorate it with colourful stickers (贴纸) or paint. · Put it into a recycling bin if you don’t want to reuse it yourself. Let’s start now! Let’s turn old cans into fun things and help make our earth greener! ( ) 2. Old cans can become new and useful things. ( ) 3. We need to wash the can and dry it first. ( ) 4. We can only decorate cans with paint. ( ) 5. We can put the can into a recycling bin if we don’t reuse it. 参考答案 小练笔 01 一、从括号里选择合适的内容，补全句子。 1. use 2. Don’t 3. Use 4. throw 5. Give 二、单项选择。 1. A 2. C 3. C 4. B 5. B 三、按要求完成各题。（每空一词） 1. Be quiet 2. No taking 3. Don’t; any 4. Don’t be 5. (1) Don’t; him; see (2) him; not; see 6. I won’t. 小练笔 02 一、单项选择。 1．B 2．B 3．C 4．A 二、选词填空。 1．shouldn’t 2．should 3．shouldn’t 4．should 5．should 6．shouldn’t 综合训练 一、从方框中选择合适的单词，补全句子。 1. throw 2. begins 3. waste 4. seat 5. off 二、在横线上填入适当的介词(for, to, about, of )。 1. about 2. for 3. to 4. of 5. for 三、读一读，根据语境选择正确的答案。 1. B 2. C 3. C 4. A 5. C 6. C 7. B 8. C 9. A 10. C 四、用括号中所给单词的适当形式填空。 1. beginning 2. has 3. newspapers 4. recycling 5. to turn 五、从方框中选择合适的单词，补全短文。 1. plastic 2. useful 3. Don’t 4. take 5. waste 六、【新语篇·倡议书】阅读 Amy 的倡议书，根据倡议书内容，判断句子正 (T) 误 (F)。 1. F 2. T 3. T 4. F 5. T 第 1 页 共 18 页 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $