常见情态动词七大考点ppt课件.ppt

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1、高三语法复习之高三语法复习之情态动词情态动词（七个考点）（七个考点）常用的情态动词常用的情态动词can （could）may（might）shall（should）will （would） must（must）dare （dared）need （need）have to ought to be able toused tohad better在情态动词的使用中在情态动词的使用中, , 我们要注意以下考点我们要注意以下考点: :1. 表示推测的情态动词的使用。表示推测的情态动词的使用。2. 表示征求的情态动词的用法。表示征求的情态动词的用法。3.虚拟语气中情态动词的使用虚拟语气中情态动词的使用。

2、4.情态动词短语的使用情态动词短语的使用5. Dare 和和 need 的用法。的用法。6. 情态动词的特殊用法情态动词的特殊用法7.部分情态动词的问与答部分情态动词的问与答1.1.表示推测表示推测情态动词的重要用法情态动词的重要用法. .1.我当时没有听到电话，我肯定是睡着了我当时没有听到电话，我肯定是睡着了I didnt hear the telephone then .I must have fallen asleep then.2. 他现在不可能在家。他现在不可能在家。He cant be at home now.3.他也许正在考虑这个问题。他也许正在考虑这个问题。He may be

3、thinking about the problem. 肯定，一定肯定，一定 可能，也许可能，也许 不可能不可能 可能吗？可能吗？must 对对 现在状态现在状态 对现在正在对现在正在 对过去对过去情态动词情态动词may, might cant, couldntcan, could + do. 常见常见must be + do. + have done + be doing 可以用可以用not表示表示“可能不可能不” +do. + have done + be doing+ do. + have done + be doing+ be doing+ have done区别区别Cant( can

4、 not)May notIs Tina leaving by bus?She should, but she _ not.A must B may C need D can不可能不可能(肯定不肯定不)可能不可能不1. He mustnt be in the classroom. ( )Cant2. You might leave the bag on the bag. ( )might have left3. You must have seen the film last week, havet you? ( )didnt you 4. Li ming must have been to J

5、apan, didnt he? (hasnt he)1.-Are you coming to Jeffs party? -Im not sure. I _ go to the concert instead.A.must B.would C.should D.mightD2.Sorry, Im late. I _ have turned off the alarm clock and gone back to sleep again.A.might B.should C.can D.willA3.My English-Chinese dictionary has disappeared. Wh

6、o _ have taken it? A.might B.must C.could D.wouldC 表示表示 征求征求: 2. 2. 表示征求意见的情态动词的用法。表示征求意见的情态动词的用法。1.Can ,may ,might ,could 各种人称各种人称could ,might 提问语气婉转，回答用提问语气婉转，回答用can ,may2.Will ,would 用于第二人称。用于第二人称。Will you join us in singing?3.Shall 第一，三人称第一，三人称Shall I lead him to your office?1. Could I borrow yo

7、ur dictionary? Yes, of course you _.A. might B. will C. can D. should2. Might I watch TV after supper? Yes, you _.A. may B. must C. might D. canC A 3.-The room is so dirty._ we clean it? -Of course.A.Will B.Shall C.Would D.DoB3. 3. 用于虚拟语气的情态动词用于虚拟语气的情态动词: :should/ ought to have done shouldnt / ought

8、nt to have done might / could have doneneednt have done本应该做本应该做（但事实没做）（但事实没做） 本来不应该做本来不应该做（但事实却做了）（但事实却做了）本来可以做本来可以做（但事实没这样做）（但事实没这样做）本来不需要做本来不需要做（但事实却做了）（但事实却做了）1. I was really anxious about you. You _ home without a word. A. mustnt leave B. shouldnt have left C. couldnt have left D. neednt leave2.

9、 There was a lot of fun at yesterdays party. You _ come, but why didnt you?A. must have B. should C. need have D. ought to haveBD3.I stayed at a hotel while in New York. -Oh, did you? You _ with Barbara.A.could have stayed B.could stayC.would stay D.must have stayed4.I told Sally how to get here, bu

10、t perhaps I _ for her.A.had to write it out B. must have written it outC. should have written it out D. ought to write it outAC5.As it turned out to be a small house party, we _ so formally.A neednt dress B. didnt have to dress upC. might not have dressed up D. neednt have dressed upD4. 4. 情态动词短语的使用

11、情态动词短语的使用: :Cant /couldnt too Cant /couldnt enough Cant help doing Cant help do May/might as well do would like/love to dowould rather dowould rather + sb.+ did /had done sth.would prefer to do.had better do.宁愿宁愿v1. 过马路时再怎么小心也不为过。过马路时再怎么小心也不为过。v2.听到这个消息，孩子们情不自禁的跳起听到这个消息，孩子们情不自禁的跳起 来。来。v3.我宁愿你明天不要我宁愿

12、你明天不要参加这个会议参加这个会议。You cant be too careful when crossing the street .Hearing the news, the children couldnt help jumping.I would rather (that) you didnt attend the meeting tomorrow.改错改错:1. Would you like having some tea?2. I would prefer going to the lecture this evening.3. Id rather you to go to the

13、 meeting next time.4. He would rather to die than to give in.5. Youd better to have your hair cut today.Would you like to have some tea?Id prefer to go to . you went to .He would rather die than give in.Youd better have .1.作为情态动词用，常用在否定句和疑问句中作为情态动词用，常用在否定句和疑问句中。疑问句：疑问句：Dare (need) +主语主语 +动词原形动词原形否定句

14、：主语否定句：主语 + darent (neednt) +动词原形动词原形I darent walk through the forest at night.Dare you walk through the forest at night?You neednt return the book now.Need he go yesterday?5 可兼做行为动词的情态动词：可兼做行为动词的情态动词：need 、 dare 2.dare,need作实义动词用，用于肯定，否定，作实义动词用，用于肯定，否定，疑问句，疑问句，有人称、时态、和数的变化有人称、时态、和数的变化,后后+ to do。He

15、dares to go there by himself.He has grown up,we dont need （to ）worry about him.3.Sth need( want, require)+ doing/ to be done The house needs cleaning/ to be cleaned The boy needs sending to the hospital at once.1.判断正误判断正误: How dare you say such a thing? How dare you to say such a thing?He darent to

16、speak English before such a crowd, did he?He darent speak English before such a crowd, dare he?1. -Dare you go out at night? -_.A Yes, I do B No ,I dare not C No, I dont D Yes, I dare to 2. I wonder how he _ that to the teacher. A. dare to say B. dare saying C. not dare say D. dared sayBD6. 几个情态动词的特

17、殊用法几个情态动词的特殊用法1. Can 表示表示惊讶惊讶 “怎么能怎么能”How can you be so rude？2.Must 表示表示“偏偏，一定要偏偏，一定要”Tom , you must play the piano in the deep night.3.Should表示惊讶表示惊讶“居然，竟然居然，竟然”4.will/would 表示经常性习惯性的动作表示经常性习惯性的动作“常常常常”wont, wouldnt 表示表示“怎么也不怎么也不”翻译：翻译：1.Must you make so much noise?2.Why must you always argue with

18、me?3.You can never imagine an honest boy like Thomas should cheat in the exam.4.However hard I tried, the door wouldnt open.Shall用于第二、第三人称，有用于第二、第三人称，有 “命令、警告、允命令、警告、允诺诺”等意思等意思You shall return the book before Monday.You shall fail if you dont work harder.You shall get promoted if you work harder.命令警

19、告允诺 1. To our surprise, the painting drawn by him _ win the prize! A would B could C should D might2. May I turn on the TV set? If you _, turn it down a little. A should B could C may D must3.You cant imagine such a gentleman_treat an old man like that. A. should B. will C. need D must 4.How _ you s

20、ay that you really understand the whole story if you have covered only part of the article?A.can B.must C.need D.mayAA5.When he was there, he _ go to that coffee shop at the corner after work everyday.A.would B. should C. had better D. mightA7、部分情态动词的问与答、部分情态动词的问与答 1）Need I?Yes, you must.No, you nee

21、dnt. 2)Must I? Yes, you must.No, you neednt.(No, dont have to.) 3)May I?Yes, you may.=Yes, certainly/ of course.No, you may not.(4)Could I?Yes, you can.No, you cant.(5)Might I?Yes, you may.No, you may not.Guess their meaning ?Guess their meaning ?部分情态动词的否定式是情态动词中的考点之一部分情态动词的否定式是情态动词中的考点之一 mustnt nee

22、dnt cant may not shouldnt 不准不准, 禁止禁止 没必要没必要 ( = dont have to )不能不能; 不可能不可能不可以不可以; 可能不可能不不应该不应该 ( = ought not to )Have a try!Have a try!1. He was a good swimmer so he _ swim to the river bank when the boat sank. A. could B. might C. should D. was able to 2. - _ this book be yours? - No, it _ not be m

23、ine. It _ be his.A. Can, must, may B. May, might, must C. Can, may, must D. Must, can, may3. You must be fifty, _? A. mustnt you B. neednt you C. arent you D. maynt you4. He had known the matter before you told him, so you _ have told it to him. A. mustnt B. cant C. neednt D. shouldnt5. I did not ca

24、ll to make my airline reservation ，but I _. A. should have B. may have C. have to D. should6) The room is in a terrible mess; it _cleaned. A) cant have been B) shouldnt have been C) mustnt have been D) wouldnt have been 7) You should bear in mind that he is not so strong as he_. A) was used to be B) used to be C) was used to D) use to 8) _ you continue in your efforts and achieve new and greater successes. A) Would B) Will C) May D) Should