虛擬語氣講義-高考英語一輪復(fù)習(xí)

1、虛擬語氣1.if條件句的虛擬If條件句條件句的謂語形式主句的謂語形式表示現(xiàn)在的情況過去式(did/were)Should/would/could/might+ do表示過去情況過去完成時(had done )Should/would/could/might+have done表示未來情況Should +doWere to +do 過去式(did/were)Should/would/could/might+ doeg. If I had enough money, I would buy a new car.We would have won if Jack had scored that go

2、al.If I were you, I would go to bed early tonight.If it were to rain tomorrow, they would not go out.混合條件句有時，主句與從句的動作在不同的時間發(fā)生。主從句謂語動詞的虛擬語氣形式因 時間不同而不同Eg. If you had asked him yesterday, you would know what to do now.If it had rained last night(過去),it would be very cold today 現(xiàn)在).虛擬條件句的倒裝當(dāng)虛擬條件句的從句局部有w

3、ere, should,或had時，可省略if,再把were, should, 或者h(yuǎn)ad移到從句的句首，實(shí)行倒裝。Eg, If they were here now, they could help us.(=Were they here now, they could help us)If you had come earlier, you would have met him.(=Had you come earlier, you would have met him.)If it should rain, the crops would be saved.(=Should it rai

4、n, the crops would be saved.)2.含蓄條件句With, without, but for(要不是)，otherwise, or, but時態(tài)變化與if條件句的主句變化保持一致Eg, Without your help, I would not have passed the exam.I was ill that day. Otherwise, I would have taken part in the sports meeting.表示現(xiàn)在的情況過去式 did/were表示過去的情況過去完成時had done表示將來的情況Would/ could/ might

5、+doBut fbr your help, we couldnt have finished the work ahead of time.3. wish/if only（要是就好了）后從句的虛擬EgI wish I had been with you yesterday.He wishes he could paint as well as a professional artist.I wish he were here now.If only you had listened to our advice!If only I were a bird!4. as if(though)后的賓語

6、從句，當(dāng)從句所述不是事實(shí)或可能性很小時，要用虛擬 語氣表示現(xiàn)在的情況過去式 did/were表示過去的情況過去完成時had done表示將來的情況Would/ could/ might +doEg. He looks as if he were an artist.He talked about the accident as if he had seen it. 5.would rather后賓語從句的虛擬語氣表示現(xiàn)在/將來的情況過去式did/were表示過去的情況過去完成時had doneI would rather you came here now/ tomorrow.I would

7、rather you hadnt told me the truth.6表示建議、命令、要求等詞后面的賓語從句、表語從句以及同位語從句，要用(should) +do建議(suggest/advise/propose )O 命令(order/command/ask)要求(require/demand/request/desire )Insist(堅持要求)柒It is suggested/advised/proposed/ordered/required. that sb (should) do sth柒 The suggestion/advice/order.that sb (should)

8、do.Eg The teacher demanded that we (should) go to school on time.They requested that the meeting (should) be postpone.My advice is that she (should) wait till next week.He insisted that he hadnt steal the money and insisted that he (should) be set free.it is important/ necessary/strange/ natural/ a

9、pity.that sb (should) do sthEg. It is important that we (should) attend the meeting.It is a pity that he (should) refuse our invitation.it is high/about time that sb should do sthEg.Ifs high time that you should go to school.Practice填空If 1 him yesterday I him about it (see, ask)What do you think wou

10、ld happen if there no light during the days?( be)But for you help, I couldnt the place.(find)If her lawyer here last Sunday, he her from going.(be, prevent)If it had not been fbr the liberation, no changes place in my hometown(take)If Miss Green late tomorrow, who would take her place?(come)It seems

11、 as if it already summer now.(be)I wish I him the day before yesterday.(see)I made the suggest that they the plan they had made.(stick)It is suggested that a study plan right now(make)They required that we them get in the crops.(help)It was ordered that no smoking in the library, which made the smok

12、ersunhappy.(allow)rd rather Tom tomorrow.(come)It is about time you the medicine, sir.(take)If there no electricity in the future, our life a lot.(be, change)What would have happened if you her child?(not help)It is strange that he so.(think)18.1 wish I my uncle yesterday.(meet)19. Galileo insisted that the earth round the sun.(move).1 was very busy yesterday, otherwise I to the meeting.(come)If only I to my parents9 ad