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1、modal verbs,I am starving to death. I can eat two bowls of rice now. I dont know where she is, she may be in Wuhan. It cant be true. I dont believe it. Every person ought to obey the law. 5.Shall I open the window for you?,1. can和could Many of us can use the computer now, but we couldnt ten years ag
2、o. *,(1)表“_”,指现在和将来用_; 指过去用_.,能力,can,could,1. The baby will _ 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,2. -_ I use your bicycle? - Of course, you_. -No ,you _ 口语中can, could表示“许可”, could
3、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 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_),C
4、an,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,The World Wide Web is sometimes jokingly called the World Wide Wait because it _ be very s
5、low. 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) 表 推测 1） He _ (可能) come today, but Im not sure. 2) This _ be done by him.(可能不) 3) I thoug
6、ht 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 sure , but I guess something _ happened. A May; must have B Can; might have,(3) may + 主语+
7、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 his turn tomorrow. A. mustnt B. wont C. cant D. neednt 2. Well, he _ have gone far his coa
8、t 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 in winter. A would B can C must,6.- _I use your bicycle? - Of course, you_. A. Can ;coul
9、d 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, but we have done the greatest march ever made in the past ten years. neednt B. may not C. shouldnt D. mustnt,
