情态动词再掌控

1、 -by萝卜老师任厚权Outlinecancouldbe able tomaymightbe allowed tomust-have toshallshouldbe supposed to/ought towillwouldbe going toHe must drink a lot of milk.ØØ1You must wear a seat belt while driving.Why isnt John in class?He must be sick.A:I wonder where Tom is.B:He may/might/could be in the li

2、brary.Excuse me, but I have to sneeze.B: He is sick.He must be sick.He may be sick.Look at that house!Those eo le must have a lot of mone .ppyI must inish homework.fLook at that house!Those people have to a lot of money.A: Why isnt John in class.2He could/might be sick. A: The restaurant is always e

3、mpty.B: It isn t good.It cant/couldnt be good.It may not be good.It might not be good.1.在否定推测中没有_，而_常用于表示“命令别人不要做什么”，2._表推测时不能用于肯定句，只用在否定和疑问句中 You must be joking. You cant be serious.3.could和might不表示对过去的推测.cant，不过will和should可以用来表示对现在的推测，其肯定程度等同于must.Ring his home number.Hell be at home now.=He must

4、be at home now.Someone is knocking at the door.Thatll be the postman.A: This should be State Street up here.B: Its not. I think you should have turned left at thelast intersection.A: Hey, you! Open this door!B: Its locked. Want we get the key?A: Yeah. Get it. Fast!3A: Excuse me, would you please ope

5、n this door?Can/Could I ?与May/Might I ?的区别B: Im afraid its locked. Shall I get a key?May/Could I? 表示较正式、很礼貌地提出请求。A: Please, if you wouldnt mind, as quickly as you can.May I have your name, please?Could I have two tickets, please?can/could和may/might，表示“请求对方允许我们做某事”Can/Could I ?May/Might I ?Could I se

6、e your driving license?B: Sure, Michael. Please sit down.Can/Could I ?与May/Might I ?的区别Can I ?是非正式的请求允许，一般用于说话人与对方相当熟悉的情况下A: Hi, Jenny. Can I join you?我能坐在你这吗？Can/Could I ?与May/Might I ?的区别Might I? 显得过于正式和客气，所以一般很少用。Can I use your pen?4 “请求对方为我们做某事”Would you please open this door?Could you put out your cigarette, please?I will 表示意愿Will you?you may表示许可May I ?you can/could表示许可Could/Can I ?I can/couldCould/Can you ?Could you do?Could you please do?Would you do?Could you mind doing?Would you be good/kind enough