情态动词专项复习导学案

1、情态动词专项复习导学案高三英语备课组牛洪涛 2012-10-14教学目标：1掌握情态动词一般时的基本用法，尤其是can/could/raay/might/must表推测、can* t too must表示"偏要"shall、should以及won' t的用法q2. 掌握情态动词完成时的基本用法以及和虚拟语气的联系。3. 掌握虚拟语气的用法。1. 悄态动词can/could请根据例句归纳情态动词can/could的用法：She can drive, but she can' t ride a bicycle.思考s be able to和can/could怎么

2、区别：The fire spread through the hotel very quickly, but everyone was able to get out.Can I use your phone?思考J Could I use your phone?是否正确？Can he be a student?He can* t be a student.they can be tiring sometimes, mistakes.not praise him too much.Children are generally lovely, butEven experienced teache

3、rs can make He is such a great man that we canYou can never be too careful.2. May & might 的用法(i)May I use your camera?思考:可否用can/could/Might代替上一句中的may?He may be a student.Since we have nothing better to do, we may/might as well go for a walk3. Must的用法(I)®Must I wash the dishes at once?Yes, y

4、ou must.No, you needn* t. You mustn*He must be aMust you maket smoke here.student.so much noise 命ile I am working?If you must know, I' m going to help him look for an apartment.He may be a student, but I am not sure. He must be a student, I bet. need & dare的用法总结：can/may/must表示"推测"的

5、区别s(1)4.(I) You needn* t tell him about it. She dare not do so. She dares to do so. She dares not (to) do I need to buy a book.so.4. shall的用法：Cl)Shall we go out for a walk?Shall the driver wait outside? You shall go to the front at once. He shall be sorry one day. I tell you. Don* t worry. You shall

6、 get the answer this very afternoon. Nothing shall stop us from fighting against pollution.5. should的用法：Ci)You should apologize to him.We should attend the meeting.The photo should be ready by 12.The concert should be great fun.I' m surprised that you should be so rude to the young lady. It* s a

7、 pity that he should fail in the exam.7. Will的用法：I can lend the book to you if you will read it.My car won* t start. The door won* t open.6. Would的用法：Cl)Would you mind my opening the window?I would like to join in your discussion.I would often go skating when I was a child.We would often stay up all

8、 night talking about our future.情态动词完成时的用法:1- can/could have done 的用法：(1)Can/Could he have left?He can* t have forgotten it.(2)You could have arrived earlier.2. May & Might have done(1)He may/mightHe may3. Musthave left.havehavearrived earlier, doneIt must注意：must用于完成时只有这一个用法，不存在mustn* t have don

9、e的用法q4.其它一些情态动词词完成时的用法：(I)YouYouYouYouhaverained last night, for the road is wet.should have/shouldn' tought to have told her ought not to have toldhave told her the truth.the truth, her the truth.needn* t have taken a taxi here, for it was very near to my house.虚拟语气的用法:1虚拟语气在非真实条件句中的运用：(I)与现在事实

10、相反的假设：条件句：主句： .If I were you, I would seize the chance to go abroad. .If I knew the answer, I would tell you.与过去事实相反的假设：从句：主句： If you had taken my advice, you If I had known the answer then, 与将来事实相反条件句：主句：If it snowed/should snow, were to错综条件句If I had taken your advice then, Iwould have passed the e

11、xam.I would have told you.snow tomorrow, we would put off the meeting.wouldn* 注意：从句中的if有时可以省略，但要把were, ® If I were you, I would seize the chance f Were I you, I would seize the chance tot have so much trouble now.had, should提到句首，变为倒装句。 to go abroad.go abroad, If you had taken my advice, you wou

12、ld have passed the exam.f Had you taken my advice, you would have passed the exam. If it should snow, were to snow tomorrow, we would put off the meeting.f Should/Were it to snow tomorrow, we would put off the meeting.2.其它形式的虚拟语气：(1)叭sh后的宾语从句一般用虚拟语气，表示一种不能实现的愿望。 I wish that I were a bird and could f

13、ly freely in the sky. I wish that I had met the film star yesterday. I wish that I could meet the film star tomorrow.总结：表示现在或将来难以实现的愿望，句子构成为：表示与过去难以实现的愿望，句子构成为：辻only的用法打wish柑冋。If only I were a bird.If only I had met the film star yesterday. He suggested that we (should) start off early in the mornin

14、g. His suggestion is that we (should) start off early in the morning. He made a suggestion that we (should) start off early in the morning. It is suggested that we (should) start off early in the morning.It is high/about time that句型中从句的谓语动词用一般过去时或should+动词 原形(其中should不能省略九 It is (high) time that you

15、 (go) to school. It is (high) time that you (go) to school.as/as though引导的从句有时也要用虚拟语气。 He walks as if he (ill). He walks as if he (ill) to escape being punished.4. 含蓄条件句有时虚拟的情况不以if引导的条件从句形式表现出来，而是通过一个介词短语、连词或其 它形式表示。常用的连词或介词短语有:without, with, but for, otherwise, or, but 等。 Without your help, we couldn* t have finished the work ahead of time. But for your help, we couldn* t hav