2011年12月大学英语四级语法精讲（5）_第2页

　　虚拟条件句

　　定义：在一个与事实相反的条件的基础之上所得出的应该的亦或是可能的结论。

　　虚拟条件句的结构：与事实相反类（条件）＋ 应该类（结论）

　　这两个部分没有必然而直接的联系，在解题时先看结论再看条件。

　　If Mr. Wang hadn't cultivated me, I shouldn't be working now.

　　同义词辨析：tame 驯化 breed 繁殖 raise 抚养 cultivate 培养

　　结论部分：would/ could/ should/ might + 虚拟

　　规律：如果把空格划在条件部分，一定要选择 were to；

　　如果把空格划在结论部分，有could/ would/ should/ might +have +v.-ed 为正确答案。

　　有时一些介词也可以表示条件：In your position I would kill myself. = If I were in your position...

　　此类词有：otherwise/ but for/ without/ with

　　虚拟语气中 If 可以省略，但是句序要变，If I were you... 改为Were I you...

　　[P34-34]________ before we depart the day after tomorrow, we should have a wonderful dinner party.

　　A) Had they arrivedB) Would they arriveC) Were they arrivingD) Were they to arrive

　　[P34-33]Last year the advertising rate ________ by 20 percent.

　　A) raised B) aroused C) arose D) rose

　　[P16-42] Had he worked harder, he _________ the exams.

　　A) must have got throughB) could get through C) would get throughD) would have got through

　　注：条件部分省略了if 用了倒装。

　　[P28-44]Jean doesn't want to work right away because she thinks that if she _________ a job she probably wouldn't be able to see her friends very often.

　　A) has to ge tB) were to get C) had got D) could have got

　　[P31-42]_________ right now, she would get there on Sunday.

　　A) Would she leave B) If she leaves C) Were she to leave D) If she had left

　　[P12-46]We didn't know his telephone number, otherwise we _________ him.

　　A) had telephoned B) must have telephoned C) would telephon D) would have telephoned

　　[P12-52]_____ quite recently, most mothers in Britain did not take paid work outside the home.A) Until B) Before C) From D) Since

　　注：not... until... 的句型。

　　[P13-58]Liquids are like solids _________ they have a definite volume.

　　A) with that B) for that C) in that D) at that

　　[P2-51]He must have had an accident, or he _________ then.

　　A) would have been here B) had to be here C) should be here D) would be here

　　注：1. must have done 表示对过去事实的肯定推测 2. or 表否定

　　[P2-52]It was essential that the application forms _____ back before the deadline.

　　A) must be sent B) would be sent C) be sent D) were sent

　　[P3-62]_____ we have finished the course, we shall start doing more revision work..

　　A) For now B) Now that C) Ever sine D) By now

　　注：1. for now 眼下，目前 2. now that 既然 3. ever since 自从以来 4. by now 至今为止