+情態(tài)動(dòng)詞和虛擬語氣簡明分析

1、專題五 情態(tài)動(dòng)詞和虛擬語氣一、表能力 (1) Im starving. I _ eat 2 bowls of rice now. (2) If you have a good sleep, you _ work out this problem tomorrow. (將來的能力） (3) The fire spread very quickly but everyone _ get out. (過去有具體的能力；成功的做了某事）canwill be able towas able to二、表推測(cè) （可能性） 1. 表客觀的、理論上的可能性 (肯定句） (1) Accidents can hap

2、pen on such rainy days. (2) He is a nice person in general, but he can be rather difficult. Compare: We may go to the cinema tonight, but we are not sure yet.實(shí)際可能性不用can二、表推測(cè) （可能性） 2. 表具體事情發(fā)生的可能性 must (肯定句） should/ought to (不用于問句) can (否定句&疑問句) could may (不用于問句) might(不用于問句) (1) My dry cleaning shoul

3、d be ready this afternoon. (2) Can this be done by him? (3) He must have left town. I havent seen him for a while.肯定句否定句疑問句can /couldcanmust三、表示請(qǐng)求、允許、允諾 (1) Shall/May/Might/Can/Could I/we? Shall I pick the children up from school today? (2) Shall he/she/they? When shall my father be able to leave ho

4、spital? (3) Would/will you? Would you do me a favor? (4) Could/Might/would/should? (To show politeness) Could I use your bike tomorrow morning? Yes, you can. (5) shall 與第二、三人稱用于陳述句，表示說話者的命令、警告或威脅; 當(dāng)宣布法律規(guī)定時(shí)，也用shall -You shall leave the room at once, and he also shall! -It has been announced that cand

5、idates shall remain in their seats until all the papers have been collected.四、表必要性 1. must/have to mustnt/dont have to 3. need to do /need do dont need to do /neednt doCompare: neednt have done VS didnt have to do/didnt need to doYou neednt have worked (work) that late last night. It was harmful to

6、your health.-Did you work very late last night?- No, I didnt . I didnt need to work (work) very late. 4. should/ought to do (have done)五、寧愿做 1. would rather do 2. would rather do sth than do sth 3. would do sth rather than do sth 4. would rather sb. did sth 1. prefer to do 2. prefer to do rather tha

7、n do 3. prefer doing to doing六、情態(tài)動(dòng)詞/had better/would rather/would like to +have done P57 1.must have done 2.can/could have done; cant /couldnt have done 3.may/might have done 4.should/ought to have done; shouldnt /ought not to have done 5.neednt have done 6. had better/would rather/would like to +ha

8、ve done (1) You had better not have scolded her. (2) I would love to have gone to the party last night, but I had to work extra hours to finish a report. 七、情態(tài)動(dòng)詞的其他用法1. cant but do/cant choose but do（不得不、只好）I cant but agree to his idea.2. may well (完全能，很可能）(1) Her appearance has changed so much that

9、you may well not recognize her.3. may as well （最好）(1) You may as well do it at once.4. can not (never) +adj/adv.enough can not (never) too +adj/adv (1) You can never be careful enough when dealing with numbers. (You can not be too careful)5. may 表示祝愿May you succeed! 七、情態(tài)動(dòng)詞的其他用法 6. should 竟然,竟會(huì) (1) H

10、ow should I know? (2) Why should you be so late today? 7. must 偏要、非要 (1) Must you make so much noise?七、情態(tài)動(dòng)詞的其他用法 8. need 和 dare dare do/dare not do dared do/dared not do dare (to) do dared (to) do doesnt/didnt/dare (to) do (1) Everyone in the office complains that he smells awful, but nobody dares (

11、to) mention it to him. (2) He didnt dare (to) do it. (3) He dared not do it.虛擬語氣 If+didshould/would/could/might do If +had done should/would/could/might have done If + did should/would/could/might do +were to do + should do虛擬語氣 If 1. If he _ (be) our boss, we _ (stay) till 9 oclock every day. 2. If

12、you _ (take) my advice, you would not have failed in the exams. 3. If he _ (not come) tomorrow, we _ (put) off the meeting till next Monday. didnt come/were not to come/shouldnt comewould/should/might/could stayhad takenwereshould/would put虛擬語氣 混合虛擬 If you _ (follow) my advice just now, you _ (be) b

13、etter now.had followedwould be虛擬語氣 if 省略,變倒裝 1. If I were at school again, I would study harder. Were I at school again, 2. If you had come earlier, you would have caught the bus. Had you come earlier, 3. If it should rain/If it were to rain tomorrow, we would not go climbing. Should it rain/Were it

14、 to rain tomorrow,虛擬語氣 介詞短語代替條件狀語從句 1. What would you do with a million dollars? if you had a million dollars? 2. But for your help, we couldnt have succeeded. If it hadnt been for your help,. 虛擬語氣 If only If only I _ (be) a flying bird! If only I _ (see) the film! If only I _ (go) with him tomorrow

15、! even if/even though Even if/Even though I had a million reasons to leave you, I would still look for one good reason to stay. as if/as though He looks as if he _ (be) an artist. She speaks English so fluently as if she _ (study) abroad. He learns English so hard as if he _ (go) to the USA in the f

16、uture.werehad seenshould gowerehad studiedwould go虛擬語氣 含蓄條件句 1. I was ill that day. Otherwise, I would have taken part in the sports meeting. 2. A man who stopped drinking water would be dead in about 3 days. 3. I should have given you more help, but I was too busy then.虛擬語氣 用于wish賓語從句或同位語從句中 1. I w

17、ish that I _ (be) a bird and _ (can) fly freely in the sky. 2. I wish that I _ (meet) that film star yesterday. 4. I wish the president _ (learn) how to be an American soon. 3. How I wish it _ (rain) now!werecouldhad metwerent raining nowwould learn虛擬語氣 demand, order, require, insist, suggest, propo

18、se, advise 后的賓語從句中，及相關(guān)的表語、主語、和同位語從句中 1. He insisted that the boy _ (go) with them. 2. Greg still insists (that) he_ (do) nothing wrong at that time. 3. We all agree to his suggestion that we _ (go) to Dalian for sightseeing. 4.The smile on his face suggested that he _satisfied with our work.(should)

19、 godid(should) gowas虛擬語氣 主語從句 It is desired/suggested/necessary/important/strange/natural/a pity/essential + that It is suggested that the meeting (should) be put off till next week. It is strange that he (should) have acted toward his parents like that.虛擬語氣 同位語從句、表語從句 My idea is that we _ (think) i

20、t over before accepting it.(should) think虛擬語氣 It is high time thatdid/should do It is time that you _ (go) to school. It is high time that you went (go) to school.should go/went虛擬語氣 would rather 1. I would rather he could inform us the plan. 2. I would rather I had listened to their advice earlier.s

21、hallYou shall go to the ball, Cinderella.You shall fail if you dont work hard.The school rules state that no child shall be allowed out of the school during the day, unless accompanied by an adult.shouldI wonder whats happened to Annie. She should be (= It was expected that she would be) here by now

22、.If anyone should ask for me, Ill be in the managers office.I didnt expect that he should have behaved like that. wouldHe said he would see his brother tomorrow.I asked him to move his car but he said he wouldnt.What would you do if you lost your job?Would you like me to come with you?Id rather have a beer.He would al