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1、Unit 3 Could you please clean your room?,八年级下册英语（人教版）,单元语法专题Grammar Focus,情态动词could 情态动词could 构成的句型用于向对方提出请求或征求对方的许可，表示委婉的语气。 1委婉地表示请求别人做某事时用：Could you (please) do sth.？此句型的肯定答语用：Yes, sure./Yes, I can./ Of course, I can./No problem./With pleasure.等；否定答语用：Sorry，I cant.I have to/Sorry.Im going to / Im
2、 afraid I cant.I have to等。总之，答语没有固定的形式，但要符合上下文的语境。,如： Could you please make your bed？请你整理你的床铺好吗？ Yes, sure.好的，当然可以。 Could you wash the clothes？请你洗衣服好吗？ Sorry, I cant.Im going to do my homework.抱歉，我不能。我要做作业。,2委婉地表示请求别人允许自己做某事时用： Could I do sth.？此句型一般不在I 后加please，肯定答语用：Yes, you can./Yes, please.等；否定答语
3、用：Sorry, you cant./Im afraid you cant.等。如： Could I go to the movies？我可以去看电影吗？ Yes, you can.是的，你可以。 Could I use your computer? 我可以用你的电脑吗？ Sorry，you cant.Im going to work on it.抱歉，你不能，我要用它工作。 【注意】无论是“Could you please？”还是“Could I？”句型，其答语中一般避免使用could来回答。,一、用括号内所给单词的适当形式填空。 1Peter, we need to clean the h
4、ouse.Could you please _(sweep) the floor? 2Could you please _(take) the dog for a walk? OK, but I want to watch one show first. 3Could you please _(not smoke) in the library? Sorry, I wont.,sweep,take,not smoke,二、单项选择。 4Could you please help me clean the room? _I am busy babysitting my sister. ASorr
5、y, you cant BYes, sure CYes, I can DSorry, I cant 5My recorder is broken.Could I use yours? _， but you have to return it tomorrow. AIm not sure BNo problem CIm sorry DI hope so,D,B,6Could you please take out the rubbish? _ AYes, sure BNo, sure CYes, I am DNo, I sure 7The talented boy _ write lyrics(
6、歌词) Amay Bcould Cmight Dneeds,A,B,8A direct order like “Daisy, pass me the book” sounds rude. Wed better say：“_” ADaisy, could you please pass me the book? BDaisy, I wonder if can you pass me the book. CDaisy, give me the book! DDaisy, I wonder you can pass me the book.,A,9Could you please _ the win
7、dow? Its too cold outside. Aopen Bopening Cnot open Dnot to open 10Could I borrow your camera? _，but please give it back by Saturday. AI am sorry BOf course CCertainly not DNo, thanks,C,B,三、按要求完成下列句子。 11Could you let me go out tonight？(改为同义句) _go out tonight? 12Could you please help do the dishes？(作
8、肯定回答) _ 13Could we go to the zoo this Sunday？(作否定回答) _ 14Could you please move the box？(改为否定句) Could you please _the box?,Could I,Yes，I can,No，you cant,not move,四、根据对话内容，选用would或could完成对话。 John：15._ you like some more coffee，dear? Jane：No, I dont think so.Lets get the bill(账单) John：OK.Waiter, excuse me.16._ you bring us the bill，please? Waiter：Here you are, sir.17._ I take these plates away? John：Sure, thank you.18._ I have a pen to write my name? Waiter：Sure.By the way，19._ you like me to get a taxi for you，sir? John：Yes, thanks.,Would,Could,Could,Could,would,
