1、If she ____ it for me, I should be very much obliged.
A.had done
B. would do C. does
D. has done
2、____ for the timely investment from the general public, our company would not be so thriving as it is.
Had it not been
B. Were it not
C. Be it not
D. Should it not be
3、You can arrive in Beijing earlier for the meeting ____you don’t mind taking the night train.
A. Provided
B. unless
C. though
D. until
4、____ both sides accept the agreement ____ a lasting peace be established in this region.
A. Only if, will
B. If only, would
C. Should, will
D. Unless, would
5、I will accept any job ____ I don’t have to get up earlier.
A. lest
B. as long as
C. in case
D. though
6 、____our team wins, there will be a big celebration.
A. Should
B. Unless
C. If only
D. In the event that
7
____time, he’ll make a first-class tennis player.
A. Having
B. Given
C. Giving
D. Had
8．If this university ____ such a good reputation, I would not have come here. A. didn’t have
B. hadn’t had
C. doesn’t have
D. hasn’t had
9．There is a real possibility that these animals could be frightened, ____a sudden loud noise.
A. being there
B. should there be
C, there was
D. there have been
10．If only I ____ what you wanted!
A. knew
B. know
C. had known
D. have known
11．But for sunlight, there____ no moonlight.
A. will be
B, would be
C. had been
D. was
12、If places ______ alike, there would be little need for geographers.
A. being B. are C. be D. were
13、We didn't know his telephone number, otherwise we _____ him。
A. would have telephoned B. must have telephonedC. would telephone
D. had telephoned
14、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 get B. had got C. were to get D. could have got
15、Had he worked harder, he _____ the exams
A. must have got through B. would have got through
C. would get through
D. could get through
16、_____ to do the work, I should do it in some other way.
A. If were I B. I were C. Were I D. Was I
17、If you hadn’t gone with Tom to the party last night, _______.A. you would meet John already
B. you won’t have missed John
C. you will have met John
D. you would have met John
18、I would ask George to lend us the money if I ______ him.
A. had known
B. knew
C. have known
D. know
19 ___, I will take her as my wife.
A. Were she rich or poor
B. Being rich or poor
C. Be she poor or rich
D. Whether is she poor or rich
20. If they had left yesterday, they_____ along the path now.
A. wouldn’t be walking
B. should have walked
C. will walk
D. walked
21. If you should be interested, I_____ a book on the subject you night like to see.
A. will have
B. shall have
C. have
D. had
22. If we hadn’t made adequate preparations, we_____ to start next week.
A. don’t dare
B. didn’t dare
C. wouldn’t dare
D. not dare
23. I apologize if I_____ you, but I assure you it was unintentional.
A. offend
B. had offended
C. should have offended
D. might have offended
24、it is hard for me to imagine what I would be doing today if I
in love, at the age of seven, with the Melina Cox Library in my hometown.
A. wouldn’t have fallen
B. had not fallen
C. should fall
D. were to fall
25、If it ______ sunny tomorrow, I ____ boating.
A. is ，go
B. will be, go
C. is, will go
D. will be, will go
26、If you had slept earlier last night, you
so sleepy now.
A. is not
B. would not be
C. must not be
D. would not have been
27. Her terror was so great somewhere to escape, she would have run for her life. A. only if B. that there had only been C. that had there only been D. if there were only
28. You will be late ___ you leave immediately.
A. unless B. until C. ifD. or
29. Government cannot operate effectively___ it is free from such interference.
A. so long as
B. so that
C. unless
D. because
30. – What are you going to do tomorrow?
--We’ll go to the library tomorrow if it ____.
A. isn’t rain B. rain
C. won’t rain D. doesn’t rain
【参考答案】
1.题解：答案B。
译文：要是她愿意为我做那件事，我将非常感激。
条件从句中一般不用would, 但如果表示某种愿望，从句中亦可用would, 相当于be willing to。
2.题解：答案A。
译文：若不是因为当时有大众及时的投资，我们公司就不会像现在这样景气了。
该题考察的是错综条件句，即主句和从句谓语动词的动作发生在不同时间。题中主句用“would not be”表示对将来的虚拟假设，而从句表示对过去情况的假设。
3. 题解：答案 A。
译文：只要你不在乎乘夜班车，你就可以提前赶到北京去开会。
provide或providing表示“假如”常与that连用，相当于if。
4. 题解：答案是A。
译文：只有双方都同意这个协议，这一地区才可能建立起持久的和平。
在only if 这个短语中，副词only 是中心词，而从属连接词if则只是用来连接从句的，因此它表示“只有……才”；“只有在……什么时候，唯一的条件是……”的意思；only if 有时也写成only…if,表示唯一的条件，但意思不变。
5. 题解：答案B
译文：只要不早起，我什么工作都可以接受。
在as/so long as 引导的条件状语从句中，as/so long as表示只要。6. 参考答案
D
译文:如果我们队赢了，将举行大型的庆功宴。
词组in the event that相当于if,这里引导条件状语从句7. 参考答案
B
译文：
多给些时间，他会成为一流的网球运动员。
过去分词作条件状语。句中主语he和given之间是被动关系。选择现在分词还是过去分词，关键看主句的主语。如果分词的动作是主句的主语发出的，分词就选用现在分词，反之就用过去分词。 8. 答案A 译文：如果这所大学没有一个好声誉，我也不会来了。
这是错综时间条件句，是虚拟语气的一种。从句所陈述的条件是与现在事实相反的一种假设，所以动词用一般过去时；而主句表示的动作与过去的事实相反，所以用would have done...的结构。
9. 答案B
译文：如果突然出现巨大的噪音，这些动物真的有可能受到惊吓。
详细解答该剧是一个省略if的倒装的虚拟条件句，可还原为“if there should be…”。
10. 答案C
译文：假如我早知道你要什么该多好。
If only 意为“假如…该多好”,往往用于引导虚拟条件句，如果表示与将来或现在事实相反的假设，则句中谓语应采用过去时；如果表示与过去事实相反的假设，则句中谓语应采用过去完成时。
11. 答案：B
译文：要是没有阳光，也就不会有月光。
英语中经常用介词短语表示虚拟条件，常用的这类介词短语为：without, in the absence of, but for 等。本句中的虚拟条件语气表示与现在事实相反的一种假设，故主句中谓语为 would be。
12. 答案：D。
译文：如果各个地方都一样，就不需要地理学家了。
虚拟现在时表示与现在事实相反的假设，其if 从句的谓语形式用动词的过去式(be 一般用were)，主句用would/ should/ could/ might +动词原形。13. 答案：A.
译文：我们不知道他的电话号码，否则我们早打他电话了。
本题是与过去时相反的虚拟句，从句中用过去完成式，主句中用would have done.本句相当于if we had known his telephone number，we would have telephoned him.
14. 答案：C.
译文：琼不想马上就工作，她认为要是找了工作，就不能经常探访她的朋友了。
这说明，琼目前没有工作。句中假设的情况在近期内并不会存在。该条件句应当用表示将来情况的虚拟语气。 条件从句的谓语用should或were to引出。 因此C. were to get 是本题答案。选项A. has to get是陈述语气的现在时，不能用于虚拟条件句中。选项B. had got是虚拟语气的过去时，不能表示将来时间。选项D. could have got不能用于虚拟语气的条件从句中
15. 答案：B.
译文：如果他本来努力一点，那么他就可以通过考试了。
本题前半句是表示与过去事实相反的虚拟条件从句，后半句是表示与过去事实相反的主句。相当于：If he had worked harder, he would have got through the exams.本题的答案是B. would have got through。选项A. must have got through（肯定通过）表示一种对过去事情的主观推测，不是与过去事情相反的情况。另外，must不能用在虚拟条件句中。选项C. would get through（就会通过）是虚拟语气现在时的一种表示方法，表示与现在事实相反。选项D. could get through（可能通过），could也可以用于非真实条件句里，表示与事实相反的情况，但这里，它只表示与现在事实或将来可能的事实相反。
16. 答案：C.
译文：如果要我去做这份工作的话，我会用另外的方法。
在虚拟条件状语中如果有were, should, had这三个词，通常将if省略，主语提前, 变成 were。但要注意，在虚拟条件状语从句中，省略连词的倒装形式的句首不能用动词的缩略形式。如我们可说 Were I not to do., 而不能说 Weren't I to do
17. 答案：D
译文：如果你昨晚没有跟汤姆一起去聚会的话，那么你就可以见到约翰了。
与过去事实相反的虚拟条件句
18.答案：B
译文：如果我认识乔治，那么我会向他借点钱。
与现实相反，用虚拟语气。
19. 答案：C
译文：无论她贫穷还是富有，我都会娶她。
在开放式条件状语从句和让步条件状语从句中should是被省略了的，在这种情况下，如果if省略，系动词be与主语的位置要倒装。
20. 答案：A
译文：如果他们昨天离开了，那么现在就正在顺着这条小径前进。
从句用的是过去虚拟语句，主句中用的是现在虚拟语气。主要标志是主句中有“now”,由此主句的动作要用现在虚拟语气。
21. 答案：C
译文：如果你感兴趣的话，我这儿有一本关于这个主题的书，也许你会有兴趣看。
条件从句用的是现在虚拟语气，主句表示真实情况。
22. 答案：C
译文：如果没有足够的准备，我们是不敢在下星期开始这个活动的。
从句用过去虚拟语气，主句中将来虚拟语气，标志词是“next week”。
23. 答案：B
译文：我向你道歉如果说我冒犯你了，但是我向你保证这真的是无心之过。
If引导的从句是针对过去的虚拟语气
24. 答案：B
译文：“如果我不在七岁时就迷恋上了我们家乡的Melina Cox图书馆，我真难想象我今天会做什么。”
at the age of seven 是过去的时间状语，if 条件状语从句的谓语动词要用过去完成式had not fallen, 表示对过去情况的假设，主句的时间状语时today,谓语动词would be doing 表示对现在情况的假设，整句形成虚拟语气的特殊用法——错综时间条件句（Conditional Sentence of Mixed Time）
25.答案：C
译文：如果明天天晴，我就要去划船。
这是一个真实条件句，明天天晴是有可能实现的，所以无需虚拟。在条件状语从句中，从句用现在时态表将来。
26. 答案：B
译文：如果你昨天晚上睡得早一点，你现在就不会这么困了。
按照虚拟语句的用法，对过去的虚拟，主句应为将来完成式。但本句中，虽然从句时间为过去时。主句实际时间指的是现在，所以选B.
27. 答案：B
译文：她是这么的害怕以致如果那地方只要有任何可以逃脱的地方，她就要逃走了。
这是一个so…that结构表示结果状语的句型， A、D 可以排除。在that从句中又有条件从句，而且应该是虚拟语气结构，B中没有表示条件的连词，是错误的。C虽然也没有连词if，但采用了倒装结构，可以将if省略，又是had done，表示与过去事实相反的假设，时态、结构完全正确，因此是惟一正确的选择。
28. 答案A.
译文：除非你立即走，否则你就回迟到的。
可转化为 If you dong leave immediately, you will be late. B、D句意不对，or表转折，句子如为 You leave immediately or you will be late.29. 答案：C.
译文：如果不摆脱这种干扰，政府就不可能有效地工作。
B选项引导结果状语从句，D选项引导原因状语从句，A，C选项都是引导条件状语从句，但是从语义分析，应选择C项
30. 答案：D 译文：你们明天要做什么？——如果不下雨的话，我们会去图书馆。
本题由if引导虚拟条件句。If引导的虚拟条件句分真实条件与非真实条件，如if后跟的条件未发生并且有可能发生，那么if后面从句中的谓语可用一般现在是表示。如果是对过去或者不可能的情况的假设，那么谓语则用过去式。