高二英語語法虛擬語氣用法

1、 條件句 條件句謂語形式 主句謂語形式 現(xiàn)在情況 過去情況 將來情況虛擬語氣用法If +主語主語+過去式過去式主語主語+ would+ vif+主語主語+had pp.+would+have ppIf + s. +過去式過去式If + s. +should+ vIf +s.+were to + vs.+ should +v1. Much labor would have been saved if the electronic computers_ before. A. had invented B. should have been invented C. were invented D.

2、had been invented2. If only you _him what I said! Everything would have been all right. A. didnt told B hadnt told C. would not tell D. would have not told3.Jean doesnt want to work right away because she thinks that if she _a job she probably wouldnt be able to see her friends very often. A. has to

3、 get B. were to get C. had got D. could have got4.Ask him to ring me up if you _ him. A. should see C .saw B. would see D. will see5.If my father _here now, he _tell me what to do. A. were, would B were, will C. is, would D is , will6.If I _a bee, I _ work much harder. A. were, would B. were, shall

4、C had, will D. have, should7.If I _you, I _ do that. A. was, wouldnt B. were, wouldnt C. am , wont D. were, wont 8.Its quite impossible that it will rain tomorrow. But if it _, I would still go to the park. A. should rain B. would rain C. rained D had rained9._ tomorrow, what should we do? A If it r

5、ains B. Should it rain C. Would it rain D. Were it raining10.He _ learn more quickly if he _ harder. A. will, work B. would, worked C. would, work D. will , worked11.I dont think that I shall fail. But if I _, I would try again. A.should fail B. would fail C failed D.had failed12.If I _ much money,

6、I _ buy a house. A. have, will B. had, should C. had, will D have, should*1)“if”虛擬語氣倒裝形式的使用：如果“if”從句中含有 “were, had ”或“should ”時， 則可省略連詞“if ”，而把“were, had ” 或“should” 移至主語之前。1) Were I you (=if I were you ), I would .2) Had they not come last time (=If they had not come last time), we would have done.

7、3) Should it rain tomorrow (= If it should rain tomorrow), she would 1.動詞后賓語從句中的虛擬語氣。在動詞 suggest, insist, order, command, require, request , demand 等后面的賓語從句中， 動詞形式一般用 “should + 動詞原形，或省略should用動詞原形，以表示建議，勸說， 命令， 要求的語氣;在Its suggested /ordered/required/demanded/ decided/orded/ necessary/important/stran

8、ge/vital等結(jié)構(gòu)的主語從句中， 或suggestion, order, idea等詞的同位語從句和表語從句中， 也應(yīng)用should +動詞原形， 或省略should ， 以適合于說話人所表示的建議或要求， 命令的語氣。 如 Its necessary /important that every party member (should ) take the lead and work well. 2.虛擬語氣的特殊動詞， 詞組， 句形。1) about time should v It + time + that +主語 high time v-ed 2) What if.?-He wo

9、uld go to see you. -_ He did not come?A. What if B. Where if C. What come D. why whether 3.“wish” 在賓語從句中 V-ed. 表現(xiàn)在 wish + 主語（賓從中主語）+ had + 表過去 could/would/ might + V. 表將來4. as if, as though表不可能，不真實情況時的虛擬語氣例They look rather puzzled, as if /though they didnt know. You look as if /though you had seen a

10、 ghost. He is very happy as if /though he could win the game. 5.would rather在虛擬語氣中的用法 V-ed表現(xiàn)在或?qū)?would rather +主語(從句中)+ had + 過去分詞表過去 6.混合條件句 主句與從句的動作發(fā)生在不同的時間，這時主，從句謂語動詞的虛擬語氣形式因時間不同而不同，這叫做混合條件句。If you had asked him yesterday, you would know what to do now.從句與過去事實相反，主句與現(xiàn)在事實相反。）If it had rained last n

11、ight (過去), it would be very cold today (現(xiàn)在). 7.有時if條件句借助于otherwise, or, but, but for, without, but that, unless, so long as, in case, on condition that, suppose, supposing that, provided, provided that等詞表達出來,同樣還要用虛擬語氣.1.We might die without your help.2.I had my hair cut off and sold it because I cou

12、ldnt have lived through Christmas without giving you a present.3.I was busy last week otherwise I would have come to see you.4.I would have given you more money, but I was so poor then.5.I will go provided that/ providing/ providing that you go too.6.Ill cook plenty of potatoes just in case they dec

13、ide to stay for dinner.8. 一些固定詞組中也含有虛語.如,God save the King/QueenLong live ,May you succeed等.9.在一些非常正式的語言中(如法律文獻), 在if 和whatever后面有時用be.If any person be found guilty, whatever be the reason1. I advised that sister _ at her desk all day. A. mustnt B not read C doesnt read D neednt read2. The situation

14、 required that China _its door to the outside world. A.must open B.should open C.have to openD.has to open 3.I _ you a more valuable present for your birthday. I was short of money at that time. A. must have brought B. would have bought C. had bought D. would buy4.-Do you want him to lend you some m

15、oney? -I wish he _. A. had B. did C. would D. should 5. _he come , the problem would be settled. A. Would B. Should C. Shall D. If 6. It was required that each student _ enough food on the trip. A. had better bring B would bring C brought D bring7.She didnt come yesterday, or you _him. A. had seen B

16、. might have seen C. were to see D. would see 9._ you _last Wednesday, you might know it well. A. Were , to come B. If, came C. Had, come D. Did , come10. I was ill that day, otherwise I _the sports meet. A. would have taken part in B took part in C. had taken part in D. would take part in 11.She co

17、uldnt have answered the question if she _a few books on world history. A.didnt read B.wouldnt read C.havent read D.hadnt read12.When a pencil is partly in a glass of water, it looks as if it _. A. breaks B. has broken C. were broken D. had been broken 13.We should have arrived sooner but we _ a flat

18、 tyre. A. had B. would C. has not D. has 14.-Why didnt you help him? -I would have_ I didnt have the money. A. still B. but C. otherwise D. or 15. I would rather she _ with her friends that alone. A. travel on train B. traveled by train C. travels by train D. travelling by the train16.I would have invited her to the party but I _ her well. A. dont know B. didnt know C. hadnt known D. havent known17.It was ordered that no smoking _ in the library. A. was allowed B. be allowed C. would be allowed D. had been allowed18.Would you have stayed with h