Unit 3 Could you please clean your room情态动词could的用法及礼貌地提出请求和征询许可（表格式教案 ）

教师姓名 单位名称 填写时间
学科 英语 年级/册 八年级下册 教材版本
课题名称 Could you please clean your room 情态动词could的用法及礼貌地提出请求和征求许可
难点名称 情态动词could的用法及礼貌地提出请求和征求许可
难点分析 从知识角度分析为什么难 要求学生会用Could you please do ... 来礼貌地提出要求，以及用Could I ... 委婉地征询许可，教育学生如何礼貌地与人沟通。
从学生角度分析为什么难 要让学生从语境中学习情态动词could的句型及用法，有些难度。
难点教学方法 通过知识点讲解及总结学会能够礼貌地提出要求或征询许可，并礼貌地回复别人的请求与征求。通过练习及探究辨别could 在不同语境中的不同功用。
教学环节 教学过程
导入 呈现礼貌地提出请求和委婉地征询许可的句型-- Could I go out for dinner with my friends -- Sure, that should be OK.2）-- Could we get something to drink after the movie -- No, you can't. You have a basketball game tomorrow.-- Could you please take the dog for a walk -- OK, but I want to watch one show first.-- Could you please take out the rubbish -- Yes, sure.引导学生通过读并总结出两中句型结构：1）ask for permission politely礼貌地征求许可2）make polite requests礼貌地提出请求
知识讲解（难点突破） 一、测一测：Write R for requests and P for permissions. Then choose a right answer.1. Could I hang out with my friends after the movie d2. Could you please pass me the salt a3. Could I borrow that book c4. Could you help me do the dishes e5. Could you lend me some money ba. Yes, here you are. b. Hmm. How much do you need c. Yes, sure. No problem. I finished reading it last night.d. Yes, but don’t come back too late.e. No, I can’t. I cut my finger and I’m trying not to get it wet.二、知识点讲解1. Could I ... 和 Could you please... 这两个句型中，could 不是用作can的过去式，而是使用could语气更加委婉。类似的礼貌的表示请求或建议的句型有：1）Would you like +sth. / to do sth. 2）Shall we + do sth. 3）May I + do sth. 4）What / How about + sth. / doing sth. 5）Would you mind + sth. / doing sth. 2. Could I ... 和 Could you please... 这两个句型中，回答 时要用 can 或 can't，不能用could 或couldn't. -- Could I turn the television up -- Yes, you can. / Sorry , you can't. -- Tom, could you please sweep the floor -- Sure, I can. / Sorry, I can't. I have to practice the piano.试一试：根据提示完成下列句子。1. The math problem is difficult. Mary wants to ask the teacher for help: Could you please help me with the math problem 2. Mary wants to go to the movies after dinner. She may ask her mother: Could I go to the movies after dinner 3. -- Could you come and play basketball with us -- I’m afraid I ______. I have to do my homework.4. -- Could I go out with my friends tonight, mum -- Of course, you _____. But you must be back by 11:00.记一记：请求允许问句：1. Can / Could / May I ... 我可不可以.......？2. Can / Will you please ... 你能......吗 3. Would you mind ( not) ... 你介意(不)......吗 4. I wonder if I could /can... 我想知道我能否.....5. Would you please.. 你能......吗 6. I wonder if... 我想知道是否.....7.Do / Would you mind if... 你是否介意我...... 表示不介意/同意的回答:1. Yes. / Sure. / Of course. / Yes, I will.当然可以。2. No, not at all. 不，一点儿也不介意。3. Yes, do please. / Go ahead, please. 请吧。4. That's OK. / AII right.好的。5. Please hurry. 请快点儿。6. No, I don't mind. 不，我不介意。7. Certainly not. /Of course not. 当然不介意。8. No, go ahead. 不介意，你干吧。9. Sure, I'll be glad to... 当然可以,我将会很高兴......表示介意/不同意的回答:1. Sorry, I'm afraid I can't.对不起，我恐怕不行。2. You'd better not.你最好不要。3. I'm afraid not.恐怕不行。4. I'm sorry you can't...很抱歉，你不能.....五、Learn more about “could”could 与 can 都是情态动词，could 除了可以表达礼貌地提出请求和许可外，还有以下用法：1. could 是can 的过去式，表示一种能力。Example: Lisa could play the violin when she was 6. 莉萨在她六岁的时候就会拉小提琴了。选用正确的情态动词填空。1. When I was young, I _____ play different kinds of instruments.2. My little sister _____ speak English well.2. could 还可以用来表示推测，表示“有可能，也许”，语气缓和，较委婉。Example: The French book could be Alice's. She studies French. 这本法语书很可能是爱丽丝的。她学法语。3. 表示建议Example: You could buy your mother a handbag as her birthday present. 你可以给你的妈妈买一个手提包作为她的生日礼物。
课堂练习（难点巩固） 六、课堂练习1. -- Excuse me, could you help me with the heavy box -- _____. A. Yes, I do B. It doesn’t matter C. Of course2. -- Could I have your name, please -- _______. A. Sorry, I’m not B . Yes, you could C. You can call me Jenny3. -- Could I use your bike -- Sure, you _______. A. might B. can C. should4. -- Could you please clean the room -- ______ I have to do my homework. A. Yes, sure. B. Why not C. Sorry, you can’t. D. Sorry, I can’t.5. — Would you like to come to my birthday party —I’d love to, _____I’m too busy. A. and B. if C. so D. but
小结 七、小结：could的用法1. can 的过去式，例：I could jump high when I was a little girl.2.表推测，例：It could be Mary's hair band. She likes pink very much.表建议，例：You could ask your English teacher for help.礼貌地请求，例：Could you please make your bed 请求许可，例：Could I go out for dinner with may friends A polite person can travel the world.有礼貌的人能走遍天下。