情态 动词复习

1、情态 动词 Modalscan could may mightmust had toshall shouldwill wouldought to -dare daredneed - used to基本用法基本用法a modal verb + do a modal verb + be doing a modal verb + have done 现在状况现在状况现在动作现在动作过去动作过去动作/ /状态状态1) 表示能力： can, be able to2) 表示推测（可能） 理论上的可能：can, 肯定句和疑问句中 具体事情实际发生的可能：may, might 肯定句，否定句 表示推测（一定）

2、 Must 一定是 Cant 一定不是可能性由小到大：Cant-may/might notmight-may-could- canmust 3. 表示请求、允许、允诺 Can/could I .? May/might I ? Shall I ? Shall he. 征求决策者命令、警告、允诺或威胁 P89 He/you shall 4表示必要性 Need to / dont need to Neednt MustMustnt Should 5. 宁愿做某事 Would rather do sth Would rather do sth than do sth Would do sth. rat

3、her than do sth. Would rather sb. did sth Prefer to do sth. Prefer to do sth. rather than do sth. Prefer doing to doing sth. 6. 情态动词对过去情况的推测 Cant/couldnt have done- may/might have done must have done Neednt have done should have done Shouldnt have done can have done 7. 情态动词的其他用法 1） cant but do 不得不，只

4、好 2） May well/ may as well do sth. 完全能，很可能 3）May you succeed. 感叹句 4）Should +表示惊讶 对某事不理解，感到意外、惊讶等 How _ a gentle like him be so unfriendly to a woman! should8Need, dare 情态动词和实意动词用法 他需要马上就走。 他不需要马上就走。 他不敢马上就走。He needs to go at once.Does he need to go at once?He doesnt need to go at once.He neednt go a

5、t once.He doesnt dare to go at once.He dare not go at once. 1. Peter _ be really difficult at times even though hes a nice person in general. A. shall B. should C. can D. mustC2. It is usually warm in my hometown in March, but it _ be rather cold sometimes.A. must B. can C. should D. wouldB 3. The t

6、raffic is heavy these days. I _ arrive a bit late, so could you save me a place? A. can B. must C. need D. mightD 4. Some people who dont like to talk much are not necessarily shy; they _just be quiet people. A. must B. may C. should D. wouldB5. Hows your tour around the North Lake? Is it beautiful?

7、 -It _ be, but it is now heavily polluted. A. will B. would C. should D. mustC6. When can I come for the computer? I need it next Tuesday. -It _ be repaired by next Mon- day afternoon. A. can B. should C. might D. need B This printer is of good quality. If it _ break down within the first year, we w

8、ould repair it at our expense. A. would B. should C. could D. mightB2. You cant imagine that a well-behaved gentleman _ be so rude to a lady. A. might B. need C. should D. wouldC3.What does the sign over there read?-”No person _ smoke or carry a lighted cigarette, cigar or pipe in this area.” A. wil

9、l B. may C. shall D. mustC4. The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job? - _ my students have a try? A. Shall B. Must C. Will D. MayA5. When we worked in the same office, we _ often have coffee together.A. might B. should C. could D.

10、wouldD6. Why _ it rain on Sunday? We cant go camping as planned! What a pity! A. should B. can C. must D. may C特定的语气：特定的语气： should should 表表“万一万一; ;竟然竟然” shall shall 表许诺、威胁、命令（强调说话表许诺、威胁、命令（强调说话 人的意志或法规）；或表请求人的意志或法规）；或表请求 3.would3.would表过去的习惯，倾向性表过去的习惯，倾向性used toused to 4.must 4.must 表表“偏偏偏偏; ;非要非要”

11、1.But for your coming, I _ very lonely. A. would be B. could be C. would have been D. could have been C2.We _ last night, but we went to the concert instead. A. must have studied B. might study C. should have studied D. would studyC3.Bob _ better in the exam, but he was not careful. A. must have don

12、e B. had done C. could have done D. could do C4.- Why is the new coat so large for me? - You _ the wrong size. A. must buy B. should have bought C. might buy D. could have boughtD5.Sorry, Im late. I _ have turned off the alarm clock and gone back to sleep again. A. might B. should C. can D. will A6.

13、Yesterday Jane walked away from discussion. Otherwise, she _ something she would regret later. A. had said B. said C. might say D. might have said D 7. -Oh. Ive missed a good chance. - Yes. You _ the job when it was offered. A. should have taken B. should take C. might have taken D. must have taken

14、A8.You are wet through. You _ in the rain. A. must come B. must have caught C. may have caught D. must have got caught D9.- You were brave enough at the meeting yesterday. - Id rather _ that silly question. A. not to have raised B. not have raised C. not raise D. have not raised B10.- It had been ra

15、ining for four days when they arrived at the oil field. - Things _ easy for them then. A. cant be B. shouldnt be C. mustnt have been D. couldnt have been D11.She is two hours late. What _ to her? A. may happen B. is happening C. can have happened D. must have happenedC表表疑问疑问的猜测只能用的猜测只能用 can 或或 could

16、12.As it turned out to be a small house party, we _ so formally. A. neednt dress up B. didnt have to dress up C. might not have dressed up D. neednt have dressed upD was /were able to=managed to do sth. succeeded in doing sth 基本用法辨析：基本用法辨析：过去成功地做成某事过去成功地做成某事could 过去有能力但不一定做成某事过去有能力但不一定做成某事1.They met

17、 with a serious flood but in the end everyone _ escape from the area. A. had to B. would C. could D. was able to D2.She _ out alone at night. A. dare not to go B. dares not go C. doesnt dare to go D. doesnt dares go C3.Shut your mouth. Nothing _ stop me once I have made up my mind. A. will B. ought

18、to C. shall D. mustC4. If you _ wait over there for a moment, Mr. Smith, Ill tell our manager youve arrived. A. will B. must C. should D. might A5 .- Do you think hell do me a favor? - Its very unlikely, but he _ be prepared to help you. A. must B. will C. can D. might D6 .Its nearly seven oclock. J

19、ack _ be here at any moment. A. must B. need C. should D. can C7 .Susan _ written a report like this. A. can have B. mustnt have C. cant have D. ought to not have C8 .Better bring a little more money with you. The books _ be expensive. A. may B. must C. could D. will A9 .- Many people in England lov

20、e to give advice on weather reporting. - Yes, but I think the weather offices computers _ be more accurate(准确). A. can B. have to C. ought to D. must C10 .Our teachers are at work. You _ make so much noise. A. wont B. mustnt C. may not D. needntB11 .Put on more clothes. You _ be feeling cold with on

21、ly a shirt on. A. can B. could C. would D. must D12.- Where shall we meet tomorrow? - Well, I _ come to your house if you like. A. could B. might C. should D. would A虚拟语气虚拟语气从句从句主句主句If +主语主语+ did / were would / 主语主语 + should / + do could / might 与现在事实相反与现在事实相反与过去事实相反与过去事实相反从句从句主句主句 If +主语主语+ had don

22、e would / 主语主语 + should / + could / might have done与将来事实相反与将来事实相反从句从句主句主句 did / If +主语主语+ should do/ were to do would / 主语主语 + should / + do could / might Eliza remembers everything exactly as if it _ yesterday. A. was happening B. happens C. has happened D. happened 2. If it were not for the fact t

23、hat she _ sing, I would invite her to the party. A. couldnt B. shouldnt C. cant D. might notDA3. _ fired, your health care and other benefits will not be immediately cut off. A. Would you be B . Should you be C. Could you be D. Might you be4. Without electricity human life _ quite different today. A. is B