《can与could的用法及练习.pdf》由会员分享,可在线阅读,更多相关《can与could的用法及练习.pdf(3页珍藏版)》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、Can/couldCan/could 的用法的用法1.can/could 都属于情态动词,本身有各种意义,具体在句子中不同。2.情态动词不能单独作谓语,只能和动词一起构成谓语。3.情态动词没有人称和数量的变化。4.表示说话人的语气和情感。Can/could 的几种句式:肯定句否定句缩略式can can notcant could could notcouldnt疑问句:can you.?could you.?Can/could 用法共同点:1.都表示具备的能力,指现在、过去无论什么时候想做就能做到的能力。Could 表示过去的能力,can 表示现在或将来的能力。2.在否定句和疑问句中,都表示猜
2、测语气。Can 表示猜测的可能性要多些,而 could 表示猜测的可能性要小、轻些。3.都可以表示建议和请求,can 表示肯定,could 的请求语气更委婉。Can 与 could 用法不同点:1.can 的语气肯定,could 语气比较委婉。2.can 通常用在表示现在的事情,3.could 用在表示过去的事情。4.当表示允许别人做某事时,用 can 而不用 could.一、判断下列句子的用法:1.A hen cant swim.2.How can that be true?3.Could you pass the paper to me?4.I couldnt play the piano
3、 until I was fifteen years old.5.What you said couldnt be true.6.Can I take this seat?7.Could I use your phone?8.Yes,of course you can.二、选择题1.At that time we thought the story_ not be true.A)could B)must C)can2.You_ the work better in the future.A)could did B)can do C)could do3.The room is dirty;it
4、_cleaned.A)cant beB)couldnt be C)mustnt be4.Mary _my letter,because she is worring about it now.A)should receiveB)cant receiveC)couldnt receive5.An Englishman who _not speak Chinese in China.A)mustB)couldC)can6.Mr Wang _ write last year,he was ill for three years.A.mustnt B.couldnt C.cant7.Who is th
5、e man over there?Is it Mr Li?-No,it _ be him.Mr Li is much taller.A.mustnt B.could not C.cant8.Could I seat here?Yes,of course you _.A.can B.could C.must三、按要求完成句子1.He can ride a bike.(改一般疑问句和否定句,并作肯定和否定回答)一般疑问句_否定句_肯定回答_否定回答_2.你会弹吉他吗?_ you _ _ guitar?3.两年前我不会骑自行车。I _ _a bike two years _.四、下列各句均有一处错误,请指出并改正1.He can speaks English very well.A B C D2.Can you play a piano?A B C D3.He doesnt buy something his brother.A B C D 4.I couldnt speak Japanese when I am four.A B C D5.What can you sister does?A B C D(注:专业文档是经验性极强的领域,无法思考和涵盖全面,素材和资料部分来自网络,供参考。可复制、编制,期待你的好评与关注)