英语语法PPT之情态动词ppt课件.ppt

1、THE VERB (VI),The Modal Verb,1,Sentence completion,She hasnt called me back. Their plane might be delayed. His jackets here, It must be a good restaurant; His phones been busy all night. Lets just go over to his house. That cant really be Elvis. This restaurant cant be so expensive. That couldnt be

2、the real price.,She mustnt have checked her messages. Its snowing like crazy in New York. so he must be here too. the lines are really long. He must be on-line. He should be home by now. Hes been dead for years. Just look at the people going in. They must have made a mistake.,2,Conversation Question

3、s,In your country, what might happen to someone who loses his job? What are some things you should have done last year, but didnt do? What could you do to make your life more exciting? How would your parents punish you when/if you misbehaved as a child? What more could you be doing to practice your

4、English?,3,概 述,英语动词，按其在构成动词词组所起的作用，分为主动词和助动词两大类。助动词又分为基本助动词(如：be, have, will, shall, do)、情态助动词(modal auxiliary)和半助动词(semi-auxiliary, 如: be apt to, be certain to, happen to等）。,4,英语情态助动词共有13个：,5,情态意义表示法,表示“能力”和“可能” 表示“许可”和“不许” 表示“义务”和“必然” 表示“预见”和“推测” 表示“意愿”、“意图”和“决心” 其他情态意义,6,A. 表示“能力”（ability）,可用can,

5、 could, be able to。 Can 既能表示现在的能力，也能表示将来的能力。 B. 表示“可能”（possibility）,可用may, might, can, could。may/ might 表示“可能”，往往可以交替使用，从而比较婉转，既可以表示现在的可能，也可表示将来的可能。,7,Look！ I can do it! I cant do it now, but I can do it later. I can climb this cliff. He can drive a car. Ill be able to speak German in another two mo

6、nths. He was able to swim halfway before he collapsed. I couldnt play the piano when I was at school.,8,It may/ might be true. He may/ might be still waiting at the door. Where can he be? He may not go tomorrow. If you dont have a guide, you could lose your way. He may/ might have been hurt. You mig

7、ht have killed yourself.,9,A. 请求对方许可（permission）可用can, could, may, might。 May/ might 与can/ could 相比，后者较为婉转，更有礼貌。 B. 表示不许可用may not 或者cannot,10,Can/ Could I smoke in here? May/ Might I smoke in here? Could I use your phone? Yes, of course you can. Might I trouble you for a light? You may indeed.,11,Ca

8、n I go out for a moment? No, you cant. May I use your car for a few days? No, you may not. He may not go. He might not go. He was not allowed to go. I didnt permit him to go.,12,A. 所谓表示义务（obligation），即表示必须、应该做某事。表示这些意义，可用should, ought to, must。用这三个情态助动词表示义务，其口气强弱略有差别。 B. 所谓表示必然（necessity）就是根据说话人的判断和

9、推测认为必然会有某种情况。表示这种意义，可用should, ought to 和must,其中以用must口气最为肯定。,13,We should learn from the model workers. You should/ought to drink less. You should /ought to have asked my permission first. You must be back by ten oclock. You dont need to do it at once. You will wait outside the gate.,14,She should b

10、e here in a minute. The book should appeal to all lovers of poetry. These young trees ought to provide shade in ten years. You cant have any difficulty getting the tickets. If Fred didnt leave home before five he cant be there yet.,15,A. 表示预见（prediction）,即表示单纯将来，可用will/ shall+不定式。出英格兰以外的说英语国家如美国、新西兰

11、、南非的标准英语中，shall 已完全为will 所取代，这就是说，will可用于一切人称表示将来。 B. 表示推测（predictability）,除用should, ought to 和must外，还可用will/ would.,16,I will be a different person when I live in England. You will be hearing from me. It will rain tomorrow. Ill book a table at Francescos. We shall catch the criminals wherever they

12、hide themselves.,17,They should/ ought to be home by now. They will be home by now. She will be all right now. A lion will attack a man only when hungry. Hell stay in the laboratory for days and nights until the experiment is finished. Pigs will eat anything.,18,A. 表示意愿（willingness）,即愿意做某事，可用will, w

13、ould, shall。用will 表示意愿，可用于一切人称的主语。 B. 表示意图（intention）,即打算做某事，也可用will, would, shall。 C.表示决心（determination）,既坚持要做某事，也可用will, would, shall。,19,I will lend you the money if you need it. Will you sing at the party tomorrow evening? Will you please open the door for me? Would you lend me your pen a minute

14、? Certainly, I will. Shall you take a holiday this summer?,20,I will write to her tomorrow. Why will you go there? He would see her the next day, so he didnt write to her. Shall I carry the suitcase for you? Should I turn off the light? What should we do now?,21,I will take the job and no one is goi

15、ng to stop me. If you will go, you may go at once. He wont do what hes told. You shall obey my orders. He shall leave the country at once. No one shall stop me. Foreign countries shall not interfere in our internal affairs.,22,A. should 可在某些语境中表示惋惜、忧虑、欢欣、惊讶等感情色彩。 It is a pity that he should leave so

16、 soon. They were amazed that she should have done so much in so short a time. How should I know? Why should he be resigning? I should say he is just the right man for the job. I should think your approach is correct.,23,B. would 可用于委婉的 陈述 I dont think he would be so careless. It would be a shame to

17、stop our work halfway. Would you like to stay here for the night? What would you advise me to do? Wouldnt it be better for us to start off a little earlier tomorrow morning?,24,C. 作为情态助动词表示胆敢，dare通常只用于否定陈述句和疑问句。 I dare not go there. The president was so hot-tempered that no one dare tell him the bad

18、 news. Tom wanted to come, but he darent. Nobody dared lift their eyes form the ground. They hardly dared breathe as somebody walked past the door. I daresay/dare say therell be a rain.,25,D. used to (只有过去时形式，没有现在时形式)表示过去习惯动作或状态，这种情况现已不复存在。 There used to be an old temple at the corner of the street,

19、 but it was destroyed in the war and has never been rebuilt. Used you to go to the same school as Edward? Did you use to go to the same school as Edward? When we were children we used to / would go skating every winter.,26,E. May/might可表示 让步意义 You may have good reasons, but that doesnt make it legal. He may be old, but hes still fit. That mig