Unit 2 Section A 3a-3c Grammar 课件 2026-2027学年人教版英语八年级上册

该初中英语课件聚焦can/could表请求与许可的用法，课堂导入通过Look and Say呈现生活场景中的不礼貌表达，如“Pack up your things.”，再用Think and Say引导对比礼貌表达“Could you please...?”，搭建从具体情境到语法规则的学习支架，帮助学生逐步理解用法。 其亮点在于情境化与任务型结合，通过真实生活场景引导学生在对比中感知语言功能，提升语言能力。3c情景对话编写和Group Work班级大扫除任务分配，让学生主动运用语法，培养思维品质和学习能力。资料结构清晰，活动多样，学生能在实践中掌握礼貌表达，教师可直接用于课堂提升教学效率。

Unit 2 Home Sweet Home Section A 3a-3c Grammar Lead-in Look and Say What is the father saying to his son? Pack up your things. Lead-in Look and Say What is the mother saying to her son? Sweep the floor. Lead-in Think and Say Pack up your things. Sweep the floor. Impolite How can we make polite requests? Could you please pack up your things? Could you please sweep the floor? Polite Lead-in Look and Say What is the boy saying to his classmate? Let me use your computer. Lead-in Look and Say What is the girl saying to her mother? I need to grow flowers on the balcony. Lead-in Think and Say I need to grow flowers on the balcony. Let me use your computer. Impolite How can we ask for permission politely? Could I grow flowers on the balcony? Could I use your computer? Polite Grammar Focus 3a Read the questions with can or could. Notice how they are answered. Could you please sweep the floor? OK, Mum. I’ll do it at once. Could I hang out with my friends after lunch? Sorry, Jim, but you have to pack up your things first. Can I put some flowers on the table? Yes, good idea! Can you help me hang up the photos? Sure. / No problem! Grammar Focus 3a Then write R for requests or P for permission next to each question. Could you please sweep the floor? OK, Mum. I’ll do it at once. Could I hang out with my friends after lunch? Sorry, Jim, but you have to pack up your things first. Can I put some flowers on the table? Yes, good idea! Can you help me hang up the photos? Sure. / No problem! R P P R at once 立刻,马上 n. 请求 n. 许可 Let’s learn Could you please sweep the floor? Could I hang out with my friends after lunch? Can I put some flowers on the table? Can you help me hang up the photos? 一、Can/Could表请求/允许的用法 情态动词can/could构成的句型可用于向对方委婉地提出请求或征求对方的许可。could用来使语气更加委婉礼貌。 Let’s learn 二、核心句型 Ask for permission. Could I + 动词原形? Can I +动词原形? 请求许可,询问自己是否可以做某事 肯定回答:Yes, you can. Sure./ Of course./Certainly. Yes, please. 否定回答:No, you can’t. Sorry, you can’t. I’m afraid you can’t. / … 注意:问句用could表委婉,回答要用can,不能用could。 Let’s learn 二、核心句型 Could you (please)+ 动词原形? Can you +动词原形? 礼貌请求,请求对方做某事 肯定回答:OK./Yes, sure. Certainly./Of course. With pleasure.我很乐意 No problem./ 否定回答:Sorry, I can’t. I have to… I’m afraid not. I’m afraid I can’t. I have to… Make polite requests. 注意:问句用could表委婉,回答要用can,不能用could。 Practice What parents want their kids to do: 1. sweep the floor 2. clean the room 3. pack up your things 4. sort your things into boxes 5. take out the rubbish Make polite requests. (礼貌地请求) 1. Could you please sweep the floor? 2. Can you clean the room? 3. Could you pack up your things? 4. Could you sort your things into boxes? 5. Could you please take out the rubbish? Practice What children want to do: 1. keep fish in the living room 2. invite friends to the new house 3. plant flowers on the balcony 4. hang out with friends Ask for permission. (征求许可) 1. Could I keep fish in the living room? 2. Can I invite friends to the new house? 3. Could I plant flowers on the balcony? 4. Could I hang out with your friends? Let’s learn 三、could 的其他用法如下: (1)could 为 can 的过去式,表示能力。 He could ride a bike at the age of five. 他五岁时就会骑自行车了。 (2)表示可能性,指对过去、现在或将来的某种可能的推测。 The book could be Lily’s because she likes reading books. 那本书可能是莉莉的,因为她喜欢看书。 (3)表示建议。 You could go there by bus. 你可以乘公共汽车去那儿。 Exercises ( ) 1. — I ask my friends to my house? —Sure. But you should tidy your room first. A. Must B. Need C. Can D. Should ( ) 2. —Can I borrow your pen? —. Here you are. A. Of course not B. I'm sorry C. Of course D. No, you can’t ( ) 3. —Could you tell me where the classroom is? —. I don’t know, either. A. Sure B. I'm sorry C. No problem D. Of course ( ) 4. When I was young, I swim very well. A. can B. could C. may D. must ( ) 5. — you please lend me the ruler? —Sure. A. Can B. Could C. Must D. Need 一. 选择题 C C B B B 16 Exercises ( ) 6. — I have a look at your new watch?—Yes, you . A. Can; must B. May; can C. Could; can D. Can; could ( ) 7. He speak English, but he speak French. A. can; can't B. may; can C. must; can't D. can; mustn't ( ) 8. — you help me with my math?—Of course. A. Can B. May C. Must D. Should ( ) 9. — I take this seat?—Sorry, it's taken. A. Can B. Could C. Need D. Must ( ) 10. The boy ride a bike when he was three. It was amazing. A. can B. could C. may D. should 一. 选择题 C A A B B 3b Choose the best question to complete each conversation. A. Could you give me a ride to town now? B. Can I stay out until eleven? C. Mr Lake, can I use your toilet? D. Could I use your computer? 2. A: B: Yes, if you are careful with it. 3. A: B: No, you can’t. You have a basketball game tomorrow, remember? You need a good rest. 1. A: B: Of course you can. Let me show you the way. 4. A: Can I go to the movies? B: Of course. A: B: I can’t. I have to do some work now. give sb. a ride to +地点 捎某人去……;开车载某人去…… 例句:My dad gives me a ride to school. conj. 到……时;直到……为止 C D be careful with 注意;当心 同义短语:be careful of/about 当心;留意 Be careful with the glass. 小心玻璃。 B A movie (名词)电影 the movies 电影院;电影产业 go to the movies 去看电影 3c Make up conversations for each setting, using can or could. 使用 can 或者 could,为每一个场景编写对话。 1. You are at your friend’s home. You want to call your parents, but your phone is dead. 2. You were sick at home yesterday. Your friend went to an English class and took notes. You want to know more about the class. 3. You are holding a large box. It is difficult to open the door. Your neighbour comes. 4. You and your classmates want to help clean up the community. Ask your classmates to bring gloves and rubbish bags. A: Can / Could I use your phone? B: Sure. / Of course. dead adj. 不运行的;死的 note (名词)笔记;记录;便条 (动词)注意;指出 take notes 做笔记 It’s + adj.+ to do sth. 做某事是……的。 it是形式主语,真正的主语是后面的动词不定式短语。 It’s important to follow the rules. 遵守规则很重要。 community (名词)社区;社团 ask sb to do sth 要求某人做某事 垃圾袋 take out the rubbish 倒垃圾 rubbish bin 垃圾桶 3c Make up conversations for each setting, using can or could. 使用 can 或者 could,为每一个场景编写对话。 1. You are at your friend’s home. You want to call your parents, but your phone is dead. 2. You were sick at home yesterday. Your friend went to an English class and took notes. You want to know more about the class. 3. You are holding a large box. It is difficult to open the door. Your neighbour comes. 4. You and your classmates want to help clean up the community. Ask your classmates to bring gloves and rubbish bags. A: Can / Could I use your phone? B: Sure. / Of course. A: Could I borrow your class notes? B: Sure. Here you are. A: Could you please help me open the door? B: No problem. A: Could you bring gloves and rubbish bags to me? B: Of course. Group work Your class is going to have a big clean-up. Each group should plan cleaning tasks. Make conversations to decide what each member will do. A: Hi guys. Our class is going to have a big clean-up. Let's decide our cleaning tasks. A: , could you please ? B: Sure. A: , can you ? C: Yes, I can. D: What should I do? A: Could you please ? D: No problem. A: And I will . Let's start! Exercises 句型转换 1. Can you help me clean the room?(改为更委婉的句子) 2. Could I use your bike?(作肯定回答) 3. Could you take out the rubbish?(作否定回答) 4. I can hang out with my friends.(请求许可) 5. You can sweep the floor.(礼貌提出请求) 6. I can plant flowers on the balcony.(请求许可) Could you please help me clean the room? Yes, you can. Sorry, I can’t. I have to sweep the floor. Can I hang out with my friends? Could you please sweep the floor? Could I plant flowers on the balcony? Thank you! $