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大学英语六级虚拟语气例题解析汇总
在日常学习和工作生活中，我们很多时候都不得不用到练习题，做习题有助于提高我们分析问题和解决问题的能力。什么样的习题才是科学规范的习题呢？下面是小编整理的大学英语六级虚拟语气例题解析汇总，供大家参考借鉴，希望可以帮助到有需要的朋友。
大学英语六级虚拟语气例题解析(一)
1、 Jean Wagner’s most enduring contribution to the study of Afro-American poetry is his insistence that it in a religious, as well as worldly, frame of reference.
A. is to be analyzed B. has been analyzed
C. be analyzed D. should have been analyzed
解析：(C)在表示要求、愿望、建议、请求、命令等含义的名词同位语从句中，从句谓语动词要用虚拟语气形式，即should(可以省略)+动词原形。
2、 I would have gone to visit him in the hospital had it been at all possible, but I ______ fully occupied the whole of last week.
A. were B. had been C. have been D. was
解析：(D)本道题目的前半句话是对过去情况的一种假设，但事实上并没有发生，而事实上没有发生的真实原因是句子的后半部分由but引导的转折句所表述的真实。因而but所引导的句子中应该用表示志过去事实相符合的表陈述的时态，即一般过去时。
3. 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
解析：(B)此题要求在if从句中选择适当的动词形式，以主句中的动词apologize(抱歉)来看，if从句中表达的内容应该是过去做的事，因此可以排除(A)，因为(A)是现在时。(C)中should+have+过去分词结构表示本来应该做却没有做的事，在此不合题意。(D)选项中的might+have+过去分词表示对过去发生的事情很不肯定的猜测，它表达的内容还不能成为事实，所以藉此道歉真是不知从何说起，因此此处也不合题意。(B)had offended表示当时已经发生了的动作。这是复杂条件句：apologize 是现在，而条件句是表示对过去假设的条件句。
4. If you hadn’t taken such a long time to get dressed, we’d there by now.
A. be B. circles C. is circling D. be circling
解析：该句也是一个复杂条件句(或称作混合虚拟条件句)。条件句表示对过去情况的假设，而主句表示对现在情况的假设，但事实上却与此相反，所以正确答案应该是(A)。
5. The sun rises in the east and sets in the west, so it seems as if the sun ________round the earth.
A. were circling B. circles C. is circling D. be circling
解析：if引导的从句要求用虚拟语气，表示同时或将来的情况，动词要用过去式(be动词用were)或would(could等)+动词原形，本句话中指的是当时的情况，所以要用过去式，故(A)是正确答案。
6. If the Watergate Incident______ Nixon would not have resigned from the presidency.
A. did not occur B. had not occurred C. was not occurring D. be circling
解析：(B)had not occurred表示对过去的虚拟，条件句中要用过去完成式，主句中要用should(would, could, might)+动词原形的过去分词。
7. I hadn’t expected James to apologize but I had hoped ______ .
A. him calling me B. that he would call me C. him to call me D. that he call me
解析：(B)had hoped是常见的要求其后的宾语从句用虚拟语气的句型,虚拟语气would+动词原形。
8. George would certainly have attended the proceedings ______ .
A. if he didn’t get a flat tire B. if the flat tire hadn’t happened
C. had he not had a flat tire D. had the tire not flattened itself
解析：表示对过去情况的假设，主句动词形式为would(should, could, might)+have+过去分词，条件句为过去完成式，if可以省略，但要把had提前主语前面。(B)，(D)的表达不符合英语表达习惯，所以(C)是正确答案。
9. The teacher suggested that her students ______experiences with ESP.
A. write a composition on their B. to write composition about the
C. wrote some compositions of his or her D. had written any compositions for his
解析：(A)suggest后面的从句要用虚拟语气形式，其形式为should(可以省略)+动词原形。
10. He speaks Chinese as fluently as if he ______a Chinese.
A. were B. had been C. is D. has been
解析：(A).表示与现在相反的虚拟。
大学英语六级虚拟语气例题解析(二)
1. As usual, he put on a show as though his trip______ a great success.
A. had been B. has been C. were D. was
解析：A.as though引导的与过去相反的虚拟。
2. Looking round the town, he felt as though he ______ away for ages.
A. has been B. was C. is D. had been
解析：D.felt是过去式，所以该句是由as though引导的与过去相反的虚拟。
3. John is so strongly built that he looks as if he ______ as elephant.
A. lifts B. is lifting C. lifted D. could lift
解析：D.as if引导的与现在事实相反的虚拟。
4. He described the town as if he ______ it himself.
A. had seen B. has seen C. saw D. sees
解析：A.as if引导的与过去相反的虚拟。
5. Most insurance agents would rather you______ anything about collecting claims until they investigate the situation.
A. do B. don’t C. didn’t D. didn’t do
解析：(D)would rather后接从句要求用虚拟语气，形式为过去式，表示对现在或将来的假设，或为过去完成式表示对过去的情况的假设。6. Although most adopted persons want the right to know who their natural parents are, some who have found them wish that they ______ the experience of meeting.
A. hadn’t B. didn’t have had C. hadn’t had D. hadn’t have
解析：(C)who引导的定语从句中的现在完成时表示动作业已发生，所以主句中表示的虚拟是针对已经发生了的行为，所以应该用过去完成式表示对过去的虚拟。
7. Without electronic computers, much of today’s advanced technology ______ .
A. will not have been achieved B. have not been achieved
C. would not have been achieved D. had not been achieved
解析：(C)这是一人含蓄虚拟条件句，通过介词短语without,表示潜在的一种假设，而主句中的情况也早已经发生，所以是对过去情况的一种假设，因此用would not have been achieved这一形式。
8. He told her to return the book in time so that others ______ a chance to read it .
A. may have B. will have C. would have D. might have
解析：(D)连so that引导的从句中要求用虚拟语气，表示一种假设，形式为might+动词原形。
9. It is time that the government ______ measures to protect the rare birds and animals.
A. takes B. took C. has taken D. taking
解析：(B)It is time that是一种要求从句用虚拟语气的常见句型。虚拟语气形式为动词的过去式。
10. He was very busy yesterday, otherwise he ______ to the meeting.
A. would come B. came C. would have come D. had come
解析：(C)otherwise用来表示一种含蓄的虚拟假设，因为是对过去(yesterday)的情况的假设，所以应该用would have come形式。
大学英语六级虚拟语气例题解析(三)
1. I must say he reads very well, and I shouldn’t be surprised if he ______ acting for a living one day.
A. had taken up B. takes up C. have taken up D. would have taken up
解析：(B)所给的四个选项中没有一个表示对未来的情况的虚拟的形式should+动词原形，或是were to do，因此可以断定if引导的条件句在这里最真实的条件句，用一般现在时表示一般将来时，故(B)是正确答案。
2. If I had seen the movie, I ______ you all about it now.
A. would tell B. will tell C. have told D. would have told
解析：(A)这是一个混合虚拟语气的句子，if条件句表示的是对过去情况的假设，而主句是对现在(now)的情况的假设，故用would tell形式。
3. I’d rather you ______ anything about it for the time being.
A. do B. didn’t do C. don’t D. didn’t
解析：B.would rather引导的虚拟语气其谓语用过去式。
4. Mary ______ my letter； otherwise she would have replied before now.
A. has received B. ought to have received
C. couldn’t have received D. shouldn’t have received
解析：C.注意单词otherwise引导虚拟语气。
5. We didnt know his telephone number, otherwise we _____ him. ( 1995年6月四级第46题)
A) would have telephoned B) must have telephoned
C) would telephone D) had telephoned
解析：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。答案是(A) would have telephoned。
6. 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.(1996年1月四级第44题)
A. has to get B. had got C. were to get D. could have got
解析：本句的意思是：“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。
7. Look at the terrible situation I am in! if only I ____ your advice.(1993年6月四级第70题)
A. follow B. had followed C. would follow D. have followed
解析：if only 引出感叹句，意思是“要是……多好”，表示说话人的一种愿望，希望发生(事实上不可能发生)与过去事实相反的情况。本句的全句意思是：“看我现在的处境多糟糕!要是我听从你的劝告多好”。事实上，句中的“我”没有听从劝告，所以处境很糟糕。题中空格处应当用虚拟语气，答案是B。
8 .That tree looked as if it _____ for a long time.
a.hasnt watered b.had not been watered
c.didnt water d.wasnt watered
解析：本题测试as if 从句的虚拟语气。一般来说，as if 从句所表达的内容完全与实际情况相反或纯粹是一种假设时，通常使用虚拟语气。
9. Id rather you ____ anything about it for the time being.
a. dont do b.did
c.didnt do d.would do
解析：would rather 表示愿望，后接从句用虚拟语气，用过去时。
10. Look at the terrible situation I am in! If only I ____ your advice
a.follow b.would follow
c.had followed d.have followed
解析：本题测试if only 引起的感叹句的虚拟语气。if only 引起的感叹句，相当于“how I wish +宾语从句”。其谓语动词形式与wish后的宾语从句形式相同。
大学英语六级虚拟语气例题解析(四)
1. We are all for your proposal that discussion _____.(1998年6月四级第68题)
a. be put off b. was put off c. should put off d. is to put off
解析：全句意思是：我们都赞成你的建议，把讨论推迟。答案是A。虚拟语气在定语从句中的应用
在Its (high) time 之后的定语从句中需用虚拟语气。谓语动词用过去式。
2. Its already 5 oclock now. Dont you think its about time _____ ?(1995年6月四级第43题)
A. we are going home B. if she leaves
C. we went home D. if she had left
解析：“现在已经十六点钟了，难道你不认为该回家了吗?”句中的“its about time …”引起虚拟。因此答案是C。
3. The mad man was put in the soft-padded cell lest he _____ himself.(1998年1月四级第38题)
a. injure b. injured c. had injure d. would injure
解析：“这个疯子被关进墙上装有衬垫的病房，以免伤了他自己。”在lest 引导的状语从句中，谓语动词多用虚拟语气，(should )+ 动词原形。答案是a。
4. Christie stared angrily at her boss and turned away, as though _____ out of the office.
A. went B. gone C. to go D. would go
解析：答案为：C. to go 。 as though或as if引导的状语从句中,从句主语和主句主语相同时,从句中可省略主语和部分谓语,如：1) She paused, as if to let the painful memories pass. (省略she wanted)
2) From time to time Jason turned round as though searching for someone. (省略he were)
3) The boy started, as if awakened from some dream. (省略he were)
由此可见,本题中省略she wanted。
5. Id rather you _____ by train, because I cant bear the idea of your being in an airplane in such bad weather.
A. would go B. should go C. went D. had gone
解析：“我宁愿你乘火车去，因为我无法想像在如此恶劣的天气你呆在飞机里。”主语+would rather后接宾语从句,从句中谓语须用虚拟语气：用一般过去时表示希望现在或将来实现的行为或状态,用过去完成时表示希望过去实现的行为或状态。本题中原因状语从句用一般现在时,暗示希望现在或将来发生的行为动作,故选答案为 C. went。
6. _____ for the timely investment from the general public,our company would not be so thriving as it is.
A. Had it not been B. Were it not C. Be it not D. Should it not be
解析：“要不是老百姓的及时投资，我们的公司不会像现在这样兴旺。”本题测试交错时间的虚拟语气。从句是表示过去时间的虚拟条件，if省略，主语it与助动词had倒装。虚拟条件句也可写成这样：If it had nor been for the timely investment from the general public。这是重点句型，在各类测试中常考。答案： A. Had it not been
7. A safety analysis _____ the target as a potential danger. Unfortunately, it was never done.
A. would identify B. will identify
C. would have identified D. will have identified
解析：“一次安全隐患分析本来会确认这个目标是潜在的危险。不幸的是，这样的分析从未做过。”这是对过去时间的虚拟，表示过去要做而没有做的事。因而答案选 C. would have identified
A. worked B. would work C. work D. were working
解析：“过去男子一般都愿意他们的妻子在家里工作。”因为prefer(宁愿)是欲望动词,其后所接的宾语从句中谓语需用(should)+动词原形。 答案：C. work
9. 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
解析：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。
10. Id rather you _____ by train, because I cant bear the idea of your being in an airplane in such bad weather.
A. would go B. should go C. went D. had gone
解析：主语+would rather后接宾语从句,从句中谓语须用虚拟语气：用一般过去时表示希望现在或将来实现的行为或状态,用过去完成时表示希望过去实现的行为或状态。本题中原因状语从句用一般现在时,暗示希望现在或将来发生的行为动作,故选C. went。
虚拟语气知识点
1. 表示现在/过去/将来情况的虚拟条件句
虚拟条件句主要有三种结构：
1) 表示与现在情况相反：主句谓语用“would / could / might +动词原形”，从句谓语用“动词的一般过去时”(动词be的过去式一律用were)。
If I were you, I would not accept his offer.
If I had time, I would certainly go to the cinema with you.
2) 表示与过去情况相反：主句谓语用“would / could / might + have +过去分词”，从句谓语用过去完成时。
If I had got up a little earlier, I wouldn’t have missed the train.
If I had been more careful, I might have passed that exam.
3) 表示与将来情况相反：主句谓语用“would / could / might +动词原形”，从句谓语用“were +动词不定式”或“should +动词原形”。
If I were to do the job, I would not be able to have enough time to study.
If it should rain tomorrow, I would not go out with you.
2. 虚拟条件句连接词if的省略
如果虚拟条件句的从句中含有were, had, should, could等词时，可以省略连接词if，但这时必须把were, had, should, could等词移到主语前面，形成倒装。这种句型主要用于书面形式。
Were I to do the job, I would finish doing it within two weeks.
Had it not been for his help, we couldn’t have arrived there on time.
Should it rain tomorrow, I would stay at home.
3. wish后宾语从句中的谓语构成
动词wish后的宾语从句表示未实现的或不可能实现的愿望，其宾语从句中的谓语动词要用虚拟语气，有以下三种构成形式。
1) 表示现在不可能实现的愿望，宾语从句中的谓语动词用一般过去时。(be的过去式为were)。
I wish I had enough money to buy a car.
I wish I were as young and energetic as you.
2) 表示过去未能实现的愿望，宾语从句中的谓语动词用过去完成时(had +过去分词)或“would / could + have +过去分词 ”。
I wish I hadn’t made such a mistake.
I wish I could have done it better.
3) 表示将来不可能实现的愿望，宾语从句中的谓语动词用“would / should (could, might) +动词原形”。
I wish I would not get old.
I wish I could travel around the world one day.
4. 某些动词后的宾语从句中谓语动词要用虚拟语气
在一些动词后面的宾语从句中，谓语动词要用虚拟语气。这时，谓语动词用动词原形或should +动词原形。这类动词一般表示命令，要求，决定，建议，主张等概念，主要有：advise, ask, command, decide, demand, desire, direct, insist, move, order, propose, recommend, request, require, suggest,等。
The workers demanded that their wages (should) be raised by 10 per cent.
The teacher decided that you do the experiment first.
5. 某些名词后的表语从句和同位语从句中谓语动词要用虚拟语气
在一些名词后面的表语从句和同位语从句中，谓语动词要用虚拟语气。这时，谓语动词用动词原形或should +动词原形。这类名词一般表示命令，要求，决定，建议，主张等概念，主要有：advice, idea, instruction, motion, order, plan, proposal, recommendation, request, requirement, suggestion,等。
My suggestion is that we (should) send for a doctor immediately.
He gave the order that they (should) do the experiment again.
6. 错综时间条件句
条件从句表示的动作和主句表示的动作，有时发生的时间是不一致的.如从句是对过去情况的假设，而主句可能是对现在正在进行情况的假设。 这种句子称为错综时间条件句.
If the weather had been more favourable, the crops would be growing still better.
7. 某些主语从句中的谓语动词要用虚拟语气
某些表示命令，要求，决定，建议，主张以及“重要性”和“紧迫性”等概念的主语从句中谓语动词要用虚拟语气。这时，谓语动词用动词原形或should +动词原形。这类主语从句一般由 “It is (was) + 形容词/过去分词 + that引导的从句”构成。该结构中，常用的形容词主要有：advisable, appropriate, desirable, essential, imperative, important, necessary, obligatory, proper, urgent, vital等；常用的过去分词主要有：arranged, decided, demanded, desired, ordered, proposed, recommended, requested, suggested等。
It is necessary that you (should) stop smoking so heavily.
It is arranged that you (should) enter for this competition.
8. as if / though引起的从句
当as if / though引起的从句所表达的内容完全与实际情况相反或者纯粹是一种假设时，通常要用虚拟语气。如果从句表示与现在的事实相反，谓语动词用一般过去时；如果从句表示与过去的事实相反，谓语动词用过去完成时；如果从句表示与将来的事实相反，谓语动词用would (might, could) + 动词原形；
They talked as if they had been friends for years.
I remember the whole thing as if it happened yesterday.
It looks as if it might rain.
Note: 如果as if / though引起的从句所表达的内容被看作是事实或者有可能是真实的，则要用陈述语气。
It seems as if it is going to rain.
The meat tastes as if it has already gone bad.
9. lest, for fear that和 in case引起的从句
当lest, for fear that和 in case表示“以免，以防，生怕，惟恐”等时，在它们引起的从句中，谓语动词常用should + 动词原形。
He ran away lest he should be seen.
He’s working hard for fear that he should fall behind.
He left early in case he should miss the last train.
10. If only引出的从句
If only引出的从句用以表达感叹性的愿望，常译为“要是…就好了”。If only从句经常省略结果主句，且主要用在虚拟语气中，即从句的谓语动词用一般过去时表示现在或将来不可能实现的愿望，或用过去完成时表示过去没有实现的愿望。
If only the rain would stop.
If only I’d listened to my parents.
Note: if only引出的句子偶尔也可使用陈述语气，但考生须注意的是，在各类测试中一般都以用虚拟语气为正确答案。
11. would rather(that)引出的从句
would rather意为“宁愿”，接从句时常省略关系代词that。would rather后的从句要用虚拟语气，即从句谓语动词用一般过去时表示现在或将来的愿望，用过去完成时表示与过去事实相反的愿望。
I’d rather you told me the truth.
I would rather you came tomorrow than today.
I’d rather you hadn’t told me about it.
12. It is (about/high) time (that) 句型
该句型表示“(早)该做…”，其后的定语从句中的谓语动词要用虚拟语气表示。在测试中从句的谓语动词用一般过去时。
It is time that we went to bed.
It is high time that somebody taught you to behave yourself.
13. 表示猜测的几种不同的方法及意义
一些情态动词与动词的完成式连用能够表示对过去情况的猜测或者未实现的可能性。
1) could have + 过去分词
A. 表示对过去可能发生的事情的推测，意为，“可能做了某事”。
He couldn’t have seen her yesterday.
They could have lost their way.
B. 表示某事在过去本有可能发生，但事实上并未发生，意为，“本可以做某事”。
We could have started a little earlier.
I could have killed her. It was a narrow escape.
2) may (might) have + 过去分词
A. 表示对过去情况的推测，意为，“可能已做某事”。
He may have heard the news.
I might have come to a wrong conclusion.
B. 表示一种未实现的可能性，即本可以做某事，而实际上并没有做，有时含有抱怨的口吻。
It was a narrow escape. You might have killed yourself.
A lot of men died who might have been saved.
3) must have + 过去分词
表示逻辑上的必然性，即按照某些现象推断过去肯定发生过的某事。
She must have made a big mistake.
The city at one time must have been prosperous, for it enjoyed a high level of civilization.
4) needn’t have + 过去分词
表示过去不必做某事，但已经做了，即本可不必做某事。
You needn’t have woken me up. I don’t have to go to work today.
He needn’t have watered the flowers, for it is going to rain.
5) should / ought to have + 过去分词
表示过去应该做某事而实际上没有做。
You should / ought to have done what your parents told you. (But you failed to do it.)
You should / ought to have been more careful. (But you weren’t.)
6) shouldn’t / oughtn’t to have + 过去分词
表示过去不应该做某事而实际上却做了。
You shouldn’t / oughtn’t to have crossed the road when the lights were red. (But you did.)
They shouldn’t / oughtn’t to have left so soon. (But they did.)
7) would have + 过去分词
表示对现在或将来某时之前业已完成的动作的推测。可译为，“可能”、“也许”、“想必”。
He would have arrived by now.
She would have recovered by then.
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