《高一英语英语必修3Unit1语法情态动词课件》由会员分享，可在线阅读，更多相关《高一英语英语必修3Unit1语法情态动词课件（28页珍藏版）》请在金锄头文库上搜索。
1、Modal Verbs Unit 1*2情态动词表示说话人的某种 感情或语气，对某一动作 或状态的某种态度。 表示“需要、可以、 必须、应当”等。 什么是情态动词？ (Modal Verbs)can/could, may/might, must/ have to, shall/should (ought to),will/would need, dare/dared*3 情态动词的特点： 1.情态动词自身都有一定的意义，但不能表示正在发生或已经发生的 事情，只表示期待或估计某事发生。 2.情态动词除ought和have外，后 面必须接不带to的不定式。 3.情态动词没有人称和数的变化,也没有非
2、谓语形式。*41. can的主要用法是：A. 表能力 eg. The girl can dance very well. be able to 通过努力做成某事He was able to reach Mount Qomolangma in 2000.B. 表示说话者的推测 事物的可能性:(否、疑）eg. Can the news be true?C. 在口语中, can可以表示请求或允许：eg. Can I sit here? 1. can和could*52. could的主要用法是：A. could 是can的过去式, 表示与过去 有关的能力和推测: We all knew that th
3、e young man couldnt be a doctor.B. could可以代替can表示请求, 但语气较can客气、委婉:could 提问，答语用can -Could I borrow your pen?-yes, you can.*6may 常用来表示：1. 在正式文体中表示请求、允许（比can正式）：: eg. May I come in ? You may go now.2. 表示说话人的猜测: “也许” “可能”: 通常只用于肯定句和否定句中。 The guest may arrive this afternoon.-Can he attend the meeting?-Ye
4、s, he_. I am not sure.2.may和mightmay*73. 表示祝愿,位于句首 eg. May you succeed! May you have a good journey! 4. may as well=had better do(最好做某事）Youd better take notes carefully.You may as well take notes carefully.*83.will和wouldwill是助动词还是情态动词？ will用于构成将来时是助动词。eg. I will tell you something important.我要告诉你一件重
5、要的事情。情态动词：1.表意愿或意志I will never do it again. If you will marry me, whatever I have is yours, and mines is yours.*92.提出 请求或建议 ,在疑问句中用于第二人称。 eg: If you want help, let me know, will you? Will you type this, please?祈使句问句与答语一般用willOpen the door, will you?- Please come to my party.- Yes, I will 3. 表习惯或必然结果
6、Fish will die without water.I will go to see my former classmates on weekends.*10would may D. ought to; must *213The weather turned out to be fine yesterday. I _ the trouble to carry my umbrella with me. (2006 江西）A should have taken B could have takenC neednt have taken D mustnt have taken*224 Hows
7、your tour around the North Lake? Is it beautiful?It _ be, but it is now heavily polluted. （2007 全国I）A. will B. would C. should D. must *235 I told your friend how to get to the hotel, but perhaps I have driven her there. （2007 陕西）A. could B. mustC. might D. should*247. (10湖南23) You _ buy a gift, but
8、 you can if you want to.A. must B. mustnt C. have to D. dont have to8. (10江西23) I have told you the truth. _ I keep repeating it?A. Must B. Can C. May D. WillDA*259. Its the office! So you _ knoweating is not allowed here. Oh, sorry. (2009湖南卷)A. must B. will C. may D. need 10. What do you mean, ther
9、e are only ten tickets? There _ be twelve. (2009 全国卷I)A. should B. wouldC. will D. shallAA*2611. I cant leave. She told me that I _ stay here until she comes back.(2009 全国卷II)A. can B. must C. will D. may 12. He must be helping the old man to water the flowers, _? (2009 陕西卷)A. is he B. isnt he C. must he D. mustnt heBB*2713. - Will you go skating with me this winter vacation?- It _ . (2002上海)A. all depended B. all dependsC. is all depended D. is all depending解析: 答案B。It all depends 是“不确定”、“看情况”的意思。B*28
