人教版八年级英语下册教案：Unit 3 Could you please clean your rom Period 3 Section A.doc

Unit 3 Could you please clean your room? Period 3 Step 1 Revision Dictation at the beginning[来源:学科网ZXXK] fold one’s clothes, do the dishes, use one’s computer, take out the rubbish make the bed, sweep the floor, stay out late, be angry with sb., take sb. for a walk clean the living room, work on, come over, do the housework, get a ride Step 2 Presentation 阅读下列句子，观察问句的用法及回答。 Could I go out for dinner with my [来源:Zxxk.Com] friends? Sure, that should be OK. 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. Step 3 Grammar Could you（please）+ V-原形？表示委婉地提出请求 1. Could you please clean your room? Yes, sure. / Of course./ Certainly./All right. 2. Could you please do the dishes? Sorry, I can’t. I have to do my homework. 在表示请求帮助或请求允许的疑问句中，常用could代替can，以表示礼貌，委婉或不确定的语气，而can则不具备这些语气。这种情况下不能把could看作can的过去式。以上两句中用could是为了表示礼貌的请求。表示请求帮助或请求允许时，除了can, could之外，还可以用may，句子的表达方式也各有不同，可以用不同的方式来表示同一个概念。例： ① Could/Can/May I use your car for a day? ② I wonder if I could use your car for a day? 对于①、②句所作允答可以各种各样，如同意可以说Yes或Sure或Certainly，还可说Yes, (do) please. 或Of course. (you may/can). 或Go ahead, please. 或That’s OK/all right; 如果不同意，可以说I’m sorry you can’t. 或I’m really sorry, but I have to use it today. 要避免说No, you can’t. 这样显得很不礼貌。否定回答通常用委婉语气。[来源:学+科+网Z+X+X+K] ③ Do you mind if I use your car for a day? 对于句③所作回答可以说Never mind. /Not at all. 表“不介意”。不能用Yes. /Sure. /Of course. /Certainly.等。无论肯定还是否定应答中，要避免使用could，要用can或may。因为应答须用确定的语气。而could在表请求的问句中是为了表示礼貌或委婉语气，用在应答中则成了不确定语气，与情理不符。所以应答中不说Yes, you could. 或No, you couldn’t. 而要说Yes, you can. 或Sorry. /No, you can’t. —Could I please use your computer? —Sorry, I’m going to work on it now. —Well, could I watch TV? —Yes, you can. Could I/you please …？表示一种有礼貌的请求或提议，其后连接原形动词，比Can you /I…？语气更委婉。类似句型有： Would you like + sth. / to do sth.? May I + do