情态动词can could may might练习.ppt

1、情态动词,can could may might,Exercising alone can be boring. I dont know where she is, she may be in Wuhan. You might be right. He asked if he could have a cup of coffee.,1. can和could Many of us can use the computer now, but we couldnt ten years ago. *,(1)表“_”,指现在和将来用_; 指过去用_.,能力,can,could,1. The baby w

2、ill _ walk in a few months. A can B could C be able to 2. The fire spread very quickly, but luckily everyone _ get out. A. had to B would C. could D. was able to,can 表示一个人长期的能力,be able to是表示一个较短暂的过程,can 和be able to 都可以表示能力.can泛指一般的能力,而且只有两种形式,即:can, couldbe able to 则主要指具体做到了某件事的能力，其形式主要是靠be 发生变化，所以形

3、式比can 多,2. -_ I use your bicycle? - Of course, you_. -No ,you _ 口语中can, could表示“许可”, could的语气比 can委婉，但答语中不用 could而用 can.,Can/Could,can,cant,3. -Mr. Brown is on time for everything .How can he be so late for the important meeting? Can 表示“惊讶，怀疑，不相信”的态度（否定句和疑问句）,4.1) _ (可能) the news be true? - It _ be

4、true.(不可能)2) He _ (可能) be on his way home now. Can 表示猜测的“可能”，用于_ _, “could”用于_,_,_(语气_),Can,Cant,could (maymight),否定句 疑问句,肯定句 否定句 疑问句,比 Can 弱,注 1.Accident can happen on such rainy days.,2.Even experienced teachers can make mistakes.,3.Children can be naughty.,can在肯定句中表示“有时候会” 指一种客观的可能性.常用来说明人或事物特征,T

5、he World Wide Web is sometimes jokingly called the World Wide Wait because it _ be very slow. A. should B. must C. will D. can,We _ go to the cinema tonight, but we are not sure. A. can B may C must,may might 1)表示许可或征询对方许可 -_ I use your telephone? - Yes , you _. - No , you _.,May Might,may,mustnt,2)

6、 表 推测 1） He _ (可能) come today, but Im not sure. 2) This _ be done by him.(可能不) 3) I thought you _ like something to read, so I bought some books for you. A. may B might,may might,may not,“可能”，用于肯定句和否定句,只有宾语从句中might表过去的可能性,4）- Why hasnt Jack come back yet?_ anything have happened to him? - I am not s

7、ure , but I guess something _ happened. A May; must have B Can; might have,(3) may + 主语+ 动词原形 “祝某人/物”不用might May you succeed in the coming exam! May our friendship last forever! 祝您美梦成真。 祝您的生活美满幸福。 May you live a happy life.,May all your dreams come true.,1.-Is Jack on duty today? -It _ be him. Its h

8、is turn tomorrow. A. mustnt B. wont C. cant D. neednt 2. Well, he _ have gone far his coat is still here. A. shouldnt B. mustnt C. cant D. wouldnt,3. Who_ it be at this time of day? A can B may,4.He is very busy. He_ be watching TV at home. A may not B cant,5.The climate of the south_ be rather cold

9、 in winter. A would B can C must,6.- _I use your bicycle? - Of course, you_. A. Can ;could B Could ; can,7. He said that I _use the phone. A may B might 8. The man looks energetic, so he _ be ill. A may not B cant,Notice: may / might not 可能不（语气不肯定） can / could not 不可能（语气肯定） 1. He may not be ill. 他可能没病。 2. He can not be ill. 他不可能有病。,9.Helen _ go on the trip with us, but she isnt quite sure yet. Shall B. must C. may D. can 10.We _ have proved great adventurers