2022年虛擬語氣should和時(shí)態(tài)前移

1、學(xué)習(xí)必備歡迎下載虛擬語氣時(shí)態(tài)前移法 ：1.以下表格是虛擬語氣用于條件狀語從句中時(shí)，主句和從句謂語動(dòng)詞的形式：條件狀語從句主句與過去事實(shí)相反had + 過去分詞should /would/could/might + have + 過去分詞與現(xiàn)在事實(shí)相反一般過去時(shí) (be 用 were) would/should/could/might + 動(dòng)詞原形與將來事實(shí)相反一般過去時(shí)或should(were to) + 動(dòng)詞原形would/should/cold/might + 動(dòng)詞原形if i were a boy, i would join the army. if he had taken my ad

2、vice, he would have succeeded in the competition. if it were to rain tomorrow, the football match would be put off. （1）有時(shí)侯在使用時(shí)可省略if,句子則可換成下列形式，即“were / had / should + 主語 ” 。如：were i a boy, i would join the army. had he taken my advice, he would have succeeded. were it not for the expense, i would go

3、 to britain. （2）有時(shí)虛擬條件不用從句，而用介詞without ，but for 等或上下文暗示，如：i am busy now。otherwise， i would help you 。without air ，we couldn t live 。（3）當(dāng)條件狀語從句表示的行為和主句表示的行為所發(fā)生的時(shí)間不一致時(shí)，動(dòng)詞的形式要根據(jù)它所表示的時(shí)間作相應(yīng)調(diào)整。如：if they had worked hard, they would be very tired.(從句說的是過去，主句指的是現(xiàn)在) if i were you, i would have gone with him.(

4、 從句說的是現(xiàn)在，主句指的是過去) 2. “ wish + 賓語從句 ” 表示不能實(shí)現(xiàn)的愿望。如：i wish it were spring all the year round. i wish i had known the answer. i wish i could fly like a bird.（would/might/could ）3.虛擬語氣在as if/as though、even if/even though 等引導(dǎo)的狀語從句中，如果從句表示的動(dòng)作發(fā)生在過去，用過去完成時(shí)；指現(xiàn)在狀況，則用一般過去時(shí)；指將來狀況則用過去將來時(shí)。如：he did it as if he were

5、 an expert. even if she were here, she could not solve the problem. 4.虛擬語氣用在if only 引導(dǎo)的感嘆句中。如：if only i were a bird. if only i had taken his advice. 5.would rather that did would rather that had donei would rather you lived in school now. i would rather you had gone there yesterday. should 類的虛擬語氣1.在

6、表示建議、要求、命令等的動(dòng)詞suggest、advise、propose、demand、require、insist request、command、order 等后的 賓語從句 中，謂語動(dòng)詞用should + 動(dòng)詞原形或是動(dòng)詞原形。如：she suggested we (should)leave here at once. the doctor ordered she should be operated. 精品學(xué)習(xí)資料 可選擇p d f - - - - - - - - - - - - - - 第 1 頁，共 5 頁 - - - - - - - - -學(xué)習(xí)必備歡迎下載2. 作表示建議、 要求

7、、 命令等的名詞advise、idea、order、demand、plan、proposal、suggestion、request等的 表語從句和同位語從句，從句中的謂語動(dòng)詞用“ （should） + 動(dòng)詞原形 ” 。如：his suggestion that we (should)go to shanghai is wonderful. my idea is that they (should)pay 100 dollars. 3. 在主語從句中 ，謂語動(dòng)詞的虛擬語氣用“should + 動(dòng)詞原形 ” 的結(jié)構(gòu)， 表示驚奇、 不相信、 理應(yīng)如此等。如：it is necessary (impo

8、rtant, natural, strange, etc.) that we should clean the room every day. it was a pity (a shame, no wonder, etc.) that you should be so careless. it will be desired (suggested, decided, ordered, requested, proposed, etc.) that she should finish her homework this afternoon. 4. “ it is (high)time (that

9、) ” 中從句的 謂語動(dòng)詞用一般過去時(shí)(be 用 were)或 should + 動(dòng)詞原形，意思是 “(現(xiàn)在 )該” 。如：it s time that i picked up my daughter.it s high time we were going.5.in case ,lest, for fear that 引導(dǎo)的目的狀語從句中用should + 動(dòng)詞原形take an umbrella with you, in case it should rain. 1 i enjoyed the movie very much i wish i the book from which it

10、was made a have read bhad read cshould have read dam reading 2 you are lateif you a few minutes earlier,you hima came；would meet bhad come；would have met ccome；will meet dhad come；would meet 3 i can t stand himhe always talks as though he everythinga knew bknows chas know dhad known 4 his doctor sug

11、gested that he short trip abroada will take bwould take ctake dtook 5 we might have failed if you us a helping handa have not given b would not give chad not given ddid not give 6 the law requires that everyrone his car checked at least once a montha has bhave chad dwill have 7 he was busy yesterday

12、，otherwise he to the meetinga would come bwould have been ccould have been dwould be 8 if there were no subjunctive mood ，english much easiera will be bwould have been ccould have been dwould be 9the fog，we should have reached our schoo1abecause of bin spite of cin case of dbut for 10what will you d

13、o during winter vacation? i don t know，but it s about time somethinga i decided bi ll decide ci d decided di m deciding11he was very busy yesterday，otherwise，he to your birthday party awould come bcame cwould have come dshould come 12the two strangers talked as if they friends for yearsashould be bh

14、ad been chave been d were 13look! what you ve done!youhave been more carefulashould bmay cought dwould 14without electricity ，what ?awill the world be like bwould the world be like c the world will be like dthe world would be like 精品學(xué)習(xí)資料 可選擇p d f - - - - - - - - - - - - - - 第 2 頁，共 5 頁 - - - - - - -

15、 - -學(xué)習(xí)必備歡迎下載15with your ability ，you out the puzzle within a few minutes a could have worked b need have worked c ought to have worked d must have worked 16my suggestion is that the sick boy to hospital as soon as possibleais taken bmust be taken cbe taken dhas to be taken 17if we had not missed the

16、 bus，we lunch at home nowawould have had bwould have cmust be having dwould be having 18here yesterday，he would attend the lecture with us today ahad he been bif he were cwere he dshould be he 19his tired face suggested that he really tired after the 1ong walk ahad been bwas cbe dshould be 20do you

17、feel that i the problem in a different way the other day? ashould come bshould have solved chave solved dsolved 210ur chairman hasn t come yetif he on time， we would have to put off the meeting ashould come bwould come cshouldn t come ddoesn t come22he insisted that he really very tried and that he

18、to have a restawas；be allowed bwas；must be allowed cshould be；must be allowed dshould be；be allowed 23he did his best in everything ；he would not have been what he wasaand bbut cotherwise dbut that 24i do i could give you a hand ahope bwish cexpect dthink 25i would rather she tomorrow than today aco

19、me bcame cshould dhas come 26the guard at the gate insisted that everybody the rulesaobeys bobey cwill obey dwould obey 27i her if i thought she would understand awould tell b will tell cwould have to1d d told 28the teacher requires rose by heart 15 english words each day a1earn bto learn cmust lear

20、n d 1earning 29if he ，he that foodluckily he was sent to the hospita1 immediate1y awas warmed；would not take bhad been warmed；wou1d not have taken cwould be warmed ；had not taken dwould have been warmed；had not taken 30without electricity human life quite different today ais bwill be cwould have bee

21、n d would be 1. just be patient .you_ except the world to change so soon. a. can t b. needn t c. may not d. will not2. i m afraid mr.harding _ see you now . he s busy.a. can t b. mustn t c. shouldn t d. needn t 3. jack descried his father, who _a brave boy many years ago, as a strong-willed man a. w

22、ould be b. would have been c. must be d. must have been 4.-good morning. ive got an appointment with miss smith in the personnel department. -ah, good morning. you _ be mrs. peters.a. might b. must c. would d. can 5. -t he weather has been very hot and dry. -yes. if it had rained even a drop, things

23、 would be much better now! and my vegetables . a. wouldnt die b. didnt die c. hadnt died d. wouldnt have died 6.teachers recommend parents _their children under 12to ride bicycles to school for safety. a. not allow b. do not allow c. mustn t allow d. couldn t allow精品學(xué)習(xí)資料 可選擇p d f - - - - - - - - - -

24、 - - - - 第 3 頁，共 5 頁 - - - - - - - - -學(xué)習(xí)必備歡迎下載7. if he _my advice, he wouldn t have lost his job.a. followed b. should follow c. had followed d. would follow 8. you_ buy a gift , but you can if you want to. a. must b. mustnt c. have to d. don t have to9. -i haven t got the reference book yet, but i

25、ll have a test on the subject next month.-don t worry. you_ have it by friday.a. could b. shall c. must d. may 10. george is going to talk about the geography of his country, but i d rather he_ more on its culture. a. focus b. focused c. would focus d. had focused 11 i have told you the truth _ i ke

26、ep repeating it?a. must b. can c. may d. will 12. doctors say that exercise is important for health, but it _ be regular exercise. a. can b. will c. must d. may 13. i_ have watched that movie it ll give me horrible dreams.a. shouldn t b. needn t c. couldn t d. mustn t14 -may i take this book out of

27、the reading room?-no, you _ you read it in here. a. mightnt b. won t c. needt d. mustnt 15 _ i take the book out? im afraid not. a. will b. may c. must d. need 16mark _ have hurried. after driving at top speed, he arrived half an hour early. a. needn t b. wouldn t c. mustn t d. couldnt17. - john wen

28、t to the hospital alone. - if he _ me about it, i would have gone with him. a. should tell b. tells c. told d. had told 18.you _park here! it s an emergency exit.a. wouldn t b. needn t c. couldn t d. mustn t19. you _ have a wrong number, she said. theres no one of that name here. a. need b. can c. must d. would 20. . had i known about this computer program, a huge amount of time and energy _ . a. would have been saved b. had been saved c. will be saved d. was saved 21. - s