1、情態(tài)動詞,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“_”,指現(xiàn)在和將來用_; 指過去用_.,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 表示一個人長期的能力,be able to是表示一個較短暫的過程,can 和be able to 都可以表示能力.can泛指一般的能力,而且只有兩種形式,即:can, couldbe able to 則主要指具體做到了某件事的能力，其形式主要是靠be 發(fā)生變化，所以形

3、式比can 多,2. -_ I use your bicycle? - Of course, you_. -No ,you _ 口語中can, could表示“許可”, could的語氣比 can委婉，但答語中不用 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“驚訝，懷疑，不相信”的態(tài)度（否定句和疑問句）,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 表示猜測的“可能”，用于_ _, “could”用于_,_,_(語氣_),Can,Cant,could (maymight),否定句 疑問句,肯定句 否定句 疑問句,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“有時候會” 指一種客觀的可能性.常用來說明人或事物特征,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)表示許可或征詢對方許可 -_ I use your telephone? - Yes , you _. - No , you _.,May Might,may,mustnt,2)

6、 表 推測 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,只有賓語從句中might表過去的可能性,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 + 主語+ 動詞原形 “祝某人/物”不用might May you succeed in the coming exam! May our friendship last forever! 祝您美夢成真。 祝您的生活美滿幸福。 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（語氣不肯定） can / could not 不可能（語氣肯定） 1. He may not be ill. 他可能沒病。 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