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吾尝终日而思矣，不如须臾之所学也；吾尝而望矣，不如登高之博见也。
－－《荀子·劝学》
虚拟语气
陈述语气：表示动作或状态是现实的、确定的或符合事实的，用于陈述句、疑问句和某些感叹句。如：0-0There are two sides to every question./ 0-1Were you busy all day yesterday?
祈使语气：表示说话人对对方的请求或命令。如：0-2Never be late again!/ 0-3Don’t forget to turn off the light.
虚拟语气：表示动作或状态不是客观存在的事实，而是说话人的主观愿望、假设或推测等。如：0-4If I were a bird, I could fly in the air.
一真实条件与非现实条件
真实条件表示现实情况中可能实现的情况而非真实条件表示与现实情况相反的假想。
1-1 If the working conditions are not too bad, I will accept the job.
如果工作条件不太差，我会接受这项工作。(真实条件)
1-2 If the working conditions were not too bad, I would accept the job.
如果工作条件不太差，我就接受这项工作了。(非真实条件)
(事实是The working conditions are too bad,、I won't accept the job)
1-3 He said if he failed, he would have another try.
他说他如果失败，他还会再试一次。(真实条件)
1-4 If he had failed, he would have had another try.
如果他失败的话，他会再试一次的。(非真实条件)
(事实是He didn't fail and he didn't have another try.)
二非真实条件句
would所代替。
2.2 混合虚拟结构
2.2.1不同时间的虚拟
If he had listened to me, he would not be in trouble now.（从句与过去事实相反，主句与现在事实相反）
If he had told me yesterday, I should know what to do now. （从句与过去事实相反，主句与现在事实相反）
If I were you, I would have gone to her birthday party. （从句与现在事实相反，主句与过去事实相反）
2.2.2 虚拟与陈述的混合
He could have passed the exam, but he wasn’t careful enough.
You should have come earlier. The bus left a moment ago.
例题解析：The tree looked as if it ______ for a long time.
A. hasn't watered
B. didn't water
C. hadn't bee watered
D. wasn't watered
那棵树看上去好象很久没人给浇水了。（答案是c）
三含蓄条件句
非真实条件句中的条件从句不出现if，假想条件只暗含在上下文中，这种句子叫做含蓄条件句。
What would I have done without you? 如没有你，我会怎么办呢？(条件暗含在分词短语without you中)
It would be easier to do it this way. 这样做会比较容易。(条件暗含在不定式短语to do it this way中)
I would appreciate a little of your time. 谢谢你给我一点时间吧。(可能暗含if you were so kind as to give me a little of your
time)
3.1 without/but for/in the absence of 表示“要不是”，“如果没有”(相当于if it were not for)表示条件时，句中一般用虚拟语气。（也可用陈述语气）
Without your help, I couldn' t finish my work on time.
In the absence of water and air, nothing could live.
But for your assistance, we could not accomplish it.要不是你的帮忙，我们是难有成就的。
3.2句中含有or, or else, otherwise, but等词语，暗示句子的某一部分(前句或后句)需用虚拟语气。
He was on business in Beijing at that ti me; otherwise he might have helped us。
Luckily Mary telephoned to inform me of the meeting, or would have been I absent。
I should have attended my friend’s wedding ceremony, but I couldn’t afford the time。
四非真实条件句倒装
省略连词if。在书面语中，如果虚拟条件从句中有were，had 或should，可以把if省略，把这几个词放到主语之前，构成主谓倒装。
If he had seen you yesterday，he would have asked you about it. →Had he seen you yesterday，he would have asked you about it. If I were you，I would do it at once. →Were I you，I would do it at once.
Should he come (If he should come), tell him to ring me up.
Were I you (If I were you), I would not do it. 我要是你，就不做这事。
Had he had lunch (If he had had lunch), he would not have eaten so many cookies.
五宾语从句中的虚拟语气
5.1下列动词后的宾语从句中insist(坚持)，urge (催促)，order(命令)，command(命令)，request(请求，要求)，demand(要求)，require(要求，需要)suggest(建议)，advise(建议)，propose(建议) , recommend(建议，推荐) 用(should ) +动词原形He suggested that we (should) save money for the future.
The undergraduate insisted that he (should) go to work in the south.
注意：当suggest表示暗示，insist表示坚持观点，事实时，后接的宾语从句应当用真实语气。
His silence suggested that he agreed with my decision.
He insists that doing morning exercises does well to people’s health.
例题详解：
(1) “Shall I come tomorrow?” “I’d rather you _________.”
A. won’t
B. didn’t
C. don’t
D. wouldn’t
(2) “I’ve told him about it.” “But I’d rather you _________.”
A. didn’t
B. hadn’t
C. don’t
D. wouldn’t
(3) “He will take you as well.” “But I’d rather he _________.”
A. won’t
B. didn’t
C. doesn’t
D. wouldn’t
B
5.2 wish后接that宾语从句表示一种假想情况，实现可能性较小
5.2.1对现在情况的虚拟，假想的情况与主句主语的愿望同时发生：宾语从句动词用过去式，谓语be用were。例：
I wish I knew the answer to the question.我希望知道这个答案。(事实上是不知道)
I wish it were spring in my hometown all the year around. 但愿我的家乡四季如春。(事实上不可能)
Now that he is in China, he wishes he understood Chinese.(wishes,过去虚拟动词understood)
现在他在中国，他希望能懂得中文。(事实上并不懂)
5.2.2假想的情况在主句主语愿望前发生：宾语从句的谓语用过去完成时，例：
I wish I hadn't wasted so much time.我后悔不该浪费这么多时间。(事实上已浪费了)
He wishes he hadn't lost the chance.他真希望没有失去机会。(其实已失去)
We wished he had spoken to us. (事实上他并没同我们讲)
例题分析：I wish I ______ longer this morning, but I had to get up and come to class.
A. could have slept
B. slept
C. might have slept
D. have slept
动词wish后面接从句，表达不可能实现或与事实相反的情况时，谓语动词要用虚拟语气，即用过去式（表示现在发生的动作）或过去完成式（表示过去发生的动作）。本题后半句谓语动词have用的是过去时had to get up and come, 所以前面要用过去完成时表示过去发生的动作。所以, 选项A)could have slept是答案
5.2.3假想的情况在主句主语愿望之后发生：从句谓语动词用would+原形动词
I wish it would stop raining. 我希望雨能停止
I wish you would be quiet. 我希望你安静一些。
You wished she would arrive the next day. 你希望她第二天会到。
I wish she would change her mind.我希望她会改变主意。
六主语从句中的虚拟语气
6.1 It is suggested/advised/ordered/requested/required…+that从句(should) do
It is proposed that more students should go to university.
6.2 It is natural/necessary/strange +that从句(should) do表惊奇、怀疑、惋惜、不满、理应如此等。
It’s strange that he should have missed the train. （表竟然）
It is important that we should learn from others.（表理应如此）
It is a pity that he should not go with us.(表惊讶、不满)
例题分析：It is politely requested by the hotel management that radios ______ after 11 o'clock at night.
A. were not played
B. not be played
C. not to play
D. did not play
全句意思是：“旅馆管理部门恳请客人晚上11点后不要打开收音机”。句中的谓语动词request（请求）所引出的从句应当用虚拟语气，即动词原形或“should＋动词原形”。本句的主语从句中，主语radio是谓语动词play 的客体，谓语应当用被动语态。所以，答案是C) not be played。在上述这类句子中不能用动词过去时形式表示虚拟语气，所以A)不正确。选项B) not to play是动词带to的不定式，不能在句中作谓语。选项D)did not play也是动词play的过去时形式，同样不能在本句中作为虚拟语气来使用。而且，它是主动语态形式，而本题要用被动语态。
6.3 I It is high time that+从句= It is time that+从句，该是...的时候了，后面的从句谓语动词要用过去式或用should加动词原形，但should不可省略。
It is (high/about) time we went home.
It is time that the children went to bed.
It is high time that the children should go to bed.
七其他名词性从句中的虚拟语气
7.1 My advice/suggestion/request/requirement/order/proposal…+ is +表语从句(should) do
My advice is that you should practise speaking English as often as possible.
The order from the commander was that the troops should set off for the front immediately.
7.2 His suggestion/advice/request/requirement…+同位语从句(should) do+ is..
The request that they should get more is reasonable.
注意：在一些名词性从句中，谓语动词用“should+动词原形”或“should +have done”，表示惊讶、意志等感情色彩，译为“竟然，居然”。
I am surprised /shocked that you should speak in such a way。
I find it astonishing that he should be so rude to his mum。
It is strange /surprising that she should not have been invited。
I am glad that your story should have won the first prize。
八其他句式中的虚拟语气
8.1 would rather +从句，常用过去时did表示与现在或将来事实相反的愿望，用过去完成时had done表示与过去事实相反的愿望。
I would rather you came tomorrow.
I would rather you hadn’t told her the news.
Frankly speaking, I would rather you came tomorrow. Th e manager isn’t available today.
I would rather you had gone to the party with me last night. It was really wonderful.
注意：would rather do sth
例题解析：
(1) “Shall I come tomorrow ?” “I’d rather you _________.”
A. won’t
B. didn’t
C. don’t
D. wouldn’t
(2) “I’ve told him about it.” “But I’d rather you _________.”
A. didn’t
B. hadn’t
C. don’t
D. wouldn’t
(3) “He will take you as well.” “But I’d rather he _________.”
A. won’t
B. didn’t
C. doesn’t
D. wouldn’t
B
8.2 If only +从句同样表示假想，意为“要是…就好了” ，相当于wish (过去式-与现在相反)/ (would+动词原形-与将来相反) /( 过去完成时-与过去相反)
If my grandmother were with me! 如果我的祖母与我在一起多好啊!
If only she had not left! 如果她没走就好了!
If only he would come tomorrow!
If only I had taken her advice!
注意：only if是“只要”的意思，从句中用陈述语气
例题解析：Look at the terrible situation I am in! If only I ____ your advice.
A. follow
B. had followed
C. would follow
D. have followed
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。
8.3 as if/though +从句表示说话人假想的情况，用法同wish (过去式-与现在相反)/ (would+动词原形-与将来相反) /( 过去完成时-与过去相反)
He felt as if he alone were responsible for what had happened.他感到仿佛唯独他要对发生的一切负责。
The old man looked at the picture, he felt as though he had gone back to time 20 years ago.
They talked and talked as if they would never meet again.他们谈了又谈，仿佛他们不会再相见的样子。
8.4 lest, for fear that, in order that及in case引导的目的状语从句中，其谓语动词多由should＋动词原形构成，should可省略
He was punished lest he should make the same mistake again．他被处以惩罚以免他再犯。
例题解析：The mad man was put in the soft-padded cell lest he _____ himself.
A. injure
B. injured
C. had injure
D. would injure
这个疯子被关进墙上装有衬垫的病房，以免伤了他自己。（答案是a）
8.5表祝愿
常用“may+动词原形”表示祝愿，但愿，此时may须置于句首（多用于正式文体中）。
May good luck be yours!祝你好运！May you be happy!祝你快乐！May you do even better!祝你取得更大成就！
1 --- I’m sorry. I _______ at you the other day.
--- Forget it. I was a bit out of control myself.
A. shouldn’t shout
B. shouldn’t have shouted
C. mustn’t shout
D. mustn’t have shout ed
2 Thank you for all your hard work last week. I don’t think we ____ it without you.
A. can manage
B. could have managed
C. could manage
D. can have managed
3. ____ he had not hurt his leg, John would have won the race.
A. If
B. Since
C. Though
D. When
4 --- If the traffic hadn’t been so heavy, I could have been back by 6 o’clock.
--- What a pity! Tina ____here to see you.
A. is
B. was
C. would be
D. has been
5 I was really anxious about you. You ____home without a word.
A. mustn’t leave
B. shouldn’t have left
C. couldn’t have left
D. needn’t leave
6 He suggested that the person ____to be punished.
A. refers
B. refer
C. should refer
D. referred
7 --- Do you think the thief entered the room through the back door?
--- No, if he had, I don’t believe he ____the living-room window.
A. would break
B. broke
C. would have broken
D. breaks
8 Without electricity, human life ____quite different today.
A. is
B. will be
C. would have been
D. would be
9 --- ____he come to see you as he promised?
--- Of course, please, and I’d rather he ____ me the truth.
A. Will; informed
B. Shall; told
C. Should; will tell
D. Can; tell
10 --- He looks very hot and dry.
--- So ____ if you had a temperature of 39.
A. would you
B. will you
C. would you have been
D. do you
考题精释
1. B。考查虚拟语气中情态动词的选择。should have done是虚拟用法，表示对过去情况的后悔或责备，D项
语气太重，不符合语境。
2. B。此题考查情态动词表示虚拟意义的用法。I don’t think…是否定前移。意为：我认为没有你我们本不
能做成这件事的。此题关键是要根据句意知道是虚拟语气，其基本形式是情态动词（过去式）+ have
done，所以其他选项皆可排除。
3. A。从题干意思看，句子明显用虚拟语气。If可引导虚拟的条件从句，指与事实相反或不可能实现的假
设。对过去的情景表达虚拟时条件句谓语用had + 过去分词，主句用would/ could/ should have done形式。
4. B。透过虚拟语气透漏的信息：因交通拥挤，我六点以前没能及时赶回；所以下文说：真遗憾，Tina六点
以前在（was）这里（要见你，但现在已经走了），上句虚拟，下句真实。
5. B。语境告诉考生，说话者对对方非常担心又满怀关切之情，既着急又生气，因此难免说出埋怨的话：你
本不该不辞而别（而使我如此担心）。shouldn’t have left是一种虚拟说法，即“过去本不该离开”，符合
语境。
6. D。suggest的宾语从句常用虚拟语气“(should)+原形动词”，故易误选B, C.其实该题考查的是过去分词
短语referred to作定语，从句的谓语是(should) be punished.
7. C。对话中的No是关键词，说明答话人已经否认小偷进入过房间，所以后面的议论用的是与过去事实相反
的虚拟语气。
8. D。“假如今天没有电，人们的生活就大不同了”，是一种虚拟表达，要用与现在事实相反的虚拟语气谓
语，故选D. 这里Without短语表示虚拟条件。
9. B。考查情态动词和虚拟语气的运用。表示征询意见，shall用于第一、三人称；would rather后接从句用过
去时表示虚拟语气。
10. A。根据句子的内在逻辑暗示这里应用“so +谓语+主语”句型表示前边的一种情况也适用于后者；本句
中从句谓语动词had是解题的关键，这暗示if从句使用了虚拟语气，那么与将来事实相反的主句谓语要用
could，would＋原形动词等，故选A。
11 I forget where I read the article, or I ________ it to you now.
A. will show
B. would show
C. am going to show
D. am showing
【陷阱】几个干扰项均有可能误选。
【分析】正确答案选B。根据上文的语境可知句中的or 隐含有一个虚拟的条件，即or=if I didn’t forget where I read the article （要是我没忘记我在哪儿读过这篇文章的话——但事实上忘了）。
12. “It looks as if he were drunk.” “So it does. _________.”
A. He’d better give up drinking
B. He shouldn’t have drunk so much
C. Health is more important than drink
D. I wonder why he is always doing so
【陷阱】几个干扰项均有可能误选，主要是受句中drunk 一词的影响。
【分析】最佳答案为D。关键信息是It looks as if he were drunk 中的虚拟语气，句子既然用了虚拟语气，也就是说，“他喝醉了”不是事实，只是他的言行好像是醉了，所以此题的最佳答案是D。
13. “Mary looks hot and dry” “So _________ you if you had so high a fever.”
A. do
B. are
C. will
D. would
【陷阱】容易误选A或C。选A者，认为前后两句的动词性质应一致；选C者，认为其后带有if 条件状语从句，从语气上看，主句应用将来时态。
【分析】此题最佳答案为D。分析如下：
(1) “so + 助动词+ 主语”是一个很有用的结构，它表示“……也一样”时。如：
He likes to watch TV, and so do I. 他喜欢看电视，我也一样。
When animals and plants disappear, so will man. 当动植物消失的时候，人类也会随之消失。
(2) 由于空格后的if 条件状语从句的谓语用的是虚拟语气（这是很重要的信息），所以主句要用would 而不用will，即答案应选D。
14. “He will come tomorrow.” “But I’d rather he _________ the day after tomorrow.”
A. will come
B. is coming
C. came
D. had come
【陷阱】容易误选A或B。根据上文的He will come tomorrow 以及下文的时间状语the day after tomorrow 似乎都表明空白处应填一个一般将来时态。
【分析】但此题的最佳答案是C。按照英语习惯，would rather 后接that 从句时，从句谓语通常要用虚拟语气，即用过去式表示现在或将来，用过去完成时表示过去。
15. All the doctors in the hospital insisted that he ________ badly wounded and that he ________ at once.
A. should be; be operated on
B. were; must be operated on
C. was; should be operated
D. was; be operated on
【陷阱】几个干扰项均有可能误选。
【分析】最佳答案选D。insist后的从句谓语有时用“should+动词原形”这样的虚拟语气，有时不用，具体要看该谓语动词所表示的含义。一般说来，若该谓语动词所表示的动作尚未发生，或尚未成为事实，则用虚拟语气；若该谓语动词所表示的动作已经发生，或已经成为事实，则要用陈述语气。分析上题的句意，可知只有选D最合适。请做以下类似试题（答案选B）：
16. _________ smoking, he would not have got cancer in the lung.
A. Was he given up
B. Had he given up
C. Did he give
D. If he gave up
【陷阱】容易误选D。
【分析】正确答案应选B。之所以不能选D，是因为时态前后有矛盾。由于主句谓语是would not have got，这表明是对过去事实作出的假设，所以从句谓语应该是had given up，而不是像D项那样用一般过去时。另外，当虚拟条件句中有had, should, were 等词时，通常可以省略if，并将had, should, were 提前置于句首。又如：(from https://www.doczj.com/doc/b217779590.html,)
Were they to cease advertising, prices would come down.= If they were to cease advertising, prices would come down. 如果他们停止做广告，价钱会降下来。
Had I been there, I would have filmed the occasion.= If I had been there, I would have filmed the occasion. 如果我在那里，我会把那场面拍摄下来了。
17. Thank you for all your hard work last week. I don’t think we ______ it without you。
A. can manage
B. could have managed
C. could manage
D. can have managed
考点解析：句中的介词短语without you表示一个假设的条件，而时间状语last week表明句子陈述的内容与过去的事实相反，因此最佳答案为B。
18. What a pity! Considering his ability and experience, he ____ better。
A. need have done
B. must have done
C. can have done
D. might have done
考点解析：“What a pity!”暗示他的表现令人遗憾。鉴于他的能力和经验，他本来可能发挥得更好，因此用might have done，最佳答案为D。
19.—Why didn’t you come to Mike's birthday party yesterday?
— Well, I________, but I forgot it。
A.should have
B.must
C.should
D.must have
考点解析：答语意为“我本来应该去的，但是我忘记了”。should have done 表示“本来应该做某事，而未做”。作为简略，done 被省略，只保留should have，最佳答案为A。
20. I to go for a walk, but someone called and I couldn’t get way。
A. was planning
B. had planned
C. planned
D. would plan
考点解析：句意为：我原计划去散步，但是有人来访，我无法走开。had planned to do sth表示过去未能实现的打算。最佳答案为B。
21. I would like _______ you to my birthday party, but I was busy and forgot to call you。
A. to invite
B. inviting
C. to have invited
D. having invited
考点解析：句意为：我本来想让你参加我的生日宴会，可是因为忙，我忘记了“。would like to have done sth。表示“本来想做某事(而未做)”。最佳答案为C。
22. — Did you visit the famous cultural relics last month?
— No, we _____ visited it, but we spent too much time shopping。
A. could have
B. must have
C. can have
D. ought to have
考点解析：句意为：“我们本来有时间参观(文化古迹)的，可是我们在购物上花费了太多的时间”。could have done表示“过去本来可以做某事(而未做) ”。最佳答案为A。
23. Had Paul received six more votes in the last election, he ______ our chairman now.
A. must have been
B. would have been
C. were
D. would be
解析：这道题目是一个混合虚拟语气的句子。条件句省略了if，把助词had提前到主语前面，表示对过去情况的假设，而主句中now表明了对现在情况的假设，所以应选would(should, could, might)+动词原形这种表达形式。四个选项中只有（D）是正确表达形式，故为正确答案。
24. ______ the English examination I would have gone to the concert last Sunday.
A. In spite of
B. But for
C. Because of
D. As for
解析：假设的情况有时不是用一个条件句表示，而是隐含在一个由介词如but for、but that、without, 由连词but、副词otherwise 、比较级、形容词、独立主格等表示的上下文中。本句主句表示对过去情况的假设，但事实上由于英语考试而没有去成，即若不是因为英语考试，我本可以去听音乐会，所以应选（B）But for为正确答案。
25 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。
26 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。
27 I'd rather you _____ by train, because I can't 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。
28 _____ 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
29 We are all for your proposal that discussion _____.
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It's (high) time 之后的
定语从句中需用虚拟语气。谓语动词用过去式。
30 Look at the terrible situation I am in! if only I ____ your advice.
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。
31 Without electronic c omputers, 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。
32 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。
33 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。
34 When Edison died, it was proposed that the American people _______ all power in their homes, streets, and factories for several minutes in honour of this great man.
A. turn off
B. turned off
C. would turn off
D. had turned off
解析：propose是欲望动词,后接的宾语从句或主语从句中谓语要用虚拟语气：should+动词原形或直接用动词原形。选择（A）. turn off
35 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
36 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 having been
解析：句意为：“要是有一声巨响，这些动物会受到惊吓，这是有现实可能性的。”should there be表示虚拟条件句中将来时间的谓语形式, if省略,所以should与there倒装。因此B. should there be 就是本题答案。
37 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。
38 I'd rather you _____ by train, because I can't 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。
39 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.
40 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
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。
高中英语语法虚拟语气 教学设计 集团档案编码：[YTTR-YTPT28-YTNTL98-UYTYNN08]
高中英语语法虚拟语气教学：The subjunctive mood 厦门第十中学吕瑞珠 一、概述 本节课是高中英语语法教学课，授课内容为虚拟语气，授课对象是高三年学生。从呈现、加深记忆、巩固到实践并将语言项目运用于写作中并做适当的点评，大概需要两课时。但我这里着重阐述的是第一课时的教学内容、教学策略等。 通过本节语法教学课的学习，学生重新整合自己的有关虚拟语气的知识，复习已知的虚拟语气的表达形式如：I wish I could fly freely in the sky like a bird; It is high that you got up.等等，并学习新的表达形式如：The English teacher suggested that we should read the English newspaper every day; I would have passed the English exam if I had worker harder in the past 20 days.最为重要的是，学生在学习完虚拟语气的表达形式后，要在写作中运用。 虚拟语气在高中英语语法的难点之一，多数学生感到费解，因此也更需要老师的指导与相应的实践与运用，并且较好地掌握虚拟语气的表达形式，有助于扫除学生阅读过程中对个别句子的理解。 二、教学目标分析 1．知识与技能 1）复习学生已掌握的虚拟语气表达的句型： I wish I were… / I could … It is high time that you did your homework.. If I were you, I would… 2) 学习虚拟语气新的表达方式，尤其是if引导的虚拟条件状语从句，掌握与现在事实、与过去事实、与将来事实相反的三种虚拟语气的表达，特别是主句与从句时态的呈现；还有引导出的宾语从句需要运用虚拟语气的动词，如suggest, insist, propose, demand and so on. 3）培养学生运用所学知识表达自己的思想的能力。 2．过程与方法 1）引导学生在欣赏英文歌曲An Angel的情景教学过程中，开启对虚拟语气表达已有的知识记忆。
虚拟语气用法 英语中的语气分为陈述语气、祈使语气、虚拟语气、疑问语气和感叹语气五类。 1、表示动作或状态是客观存在的、确定的或符合事实的，用于陈述句、疑问句和某些感叹句中。 China is an Asian country. (肯定句) How interesting my stay in China has been! (感叹句) 2、祈使句表示说话人对对方的请求、警告，建议或命令。如: Please come over here. 请到这边来。 Watch your steps! 当心!(走路) 3、虚拟语气表示说话者做出的假设而非事实，或难以实现的情况，甚至表达彻底相反的概念。此外，如需表达主观愿望或某种强烈的感情时，也可用虚拟语气。虚拟语气是由句中的谓语动词的特殊形式表示出来的。如: If I were a bird，I would be able to fly in the air. 如果我是一只小鸟，我就能在空中飞行。 I wish I could pass the examination. 我希望我能通过考试。
If there were a heavy snow next Sunday, we would not go skating. 如果下周日下大雪，我们就不能去滑冰了。 If she were to be here next Monday, I would tell her about the matter. 如果她下周一来这儿的话，我就会告诉她这件事的始末。 4、有时，虚拟条件句中，结果主句和条件从句的谓语动作若不是同时发生时，虚拟语气的形式应作相应的调整。这种条件句叫错综条件句。 ①从句的动作与过去事实相反，而主句的动作与现在或现在正在发生的事实不符。 If I had worked hard at school, I would be an engineer, too.如果我在学校学习刻苦的话，我现在也会成为一个工程师了 If they had informed us, we would not come here now. 如果他们通知过我们的话，我们现在就不会来这里了。 ②从句的动作与现在事实相反，而主句的动作与过去事实不符。 If he were free today, we would have sent him to Beijing. 如果他今天有空的话，我们会已经派他去北京了。 If he knew her, he would have greeted her. 要是他认识她的话，他肯定会去问候她了。 5、当虚拟条件句的谓语动词含有were, should, had时，if可以省略，这时条件从句要用倒装语序，即把were, should, had等词置于句首，这种多用于书面语。 Should he agree to go there, we would send him there.要是他答应去的话，我们就派他去。 Were she here, she would agree with us.如果她在这儿的话，她会同意我们的。 Had he learnt about computers, we would have hired him to work here. 如果他懂一些电脑知识的话，我们已经聘用他来这里工作了。 【注意】 若条件从句为否定句，否定词not应置于主语之后，而不能与were，should，had 等缩略成Weren't，Shouldn't，Hadn't而置于句首。 Had it not been for the bad weather we would have arrived on time. 若不是天气坏，我们就准时到达了。 ②有时省略if后提前的had不是助动词: Had I time，I would come. 假若我有时间，我会来的。(=If I had time…) 6、非真实条件句中的条件从句有时不表达出来，暗含在副词、介词短语、上下文或其他方式表示出来，这种句子叫做含蓄条件句。 ①将条件会暗含在介词短语中，如without…, but for…,otherwise（要不是因为）等 But for his help, we would be working now. (要不是他的帮助，我们还会在工作呢。
2018高考英语动词时态和语态精讲精练 在高考英语中，动词的时态和语态是重中之重，试题在考查固定句式中的时态和语态的同时，注重在上下文语境中考查时态和语态。要了解几种时态的一些常规规则，答题时要研读题干，搜索出尽可能多的“时间参照信息”，尤其要注意时态的呼应情况。 时态主动语态形式被动语态形式 一般现在时am/is/are/do/does am/is/are done 一般过去时was/were/did was/were done 现在完成时has/have done has/have been done 现在完成进行 时 has/have been doing/ 现在进行时am/is/are doing am/is/are being done 过去进行时was/were doing was/were being done 过去完成时had done had been done 将来完成时will/shall have done will/shall have been done 一般将来时will/shall do am/is/are going to do am/is/are coming/leaving am/is/are to do am/is/are about to do will/shall be done am/is/are to be done 过去将来时would do was going to do was coming/leaving was to do was about to do would be done was/were to be done 将来进行时will/shall be doing/ 考点1一般现在时 一般现在时表示动作的经常性或真理；表示现状、性质、状态时多用系动词或状态动词；在条件、时间、让步状语从句中用一般现在时或现在完成时表示将来；表示预计或规定；方位副词或介词短语放在句首，主语是名词，且全部倒装时，用一般现在时表示正在发生的动作；还可使用于文学作品和文学评论中。练一练：用所给词的适当形式填空： ①I'll go there after I________(finish)my work. ②The water will be further polluted unless some measures________(take)． ③My train________(leave)at6：30. ④A snow________(expect)to come next week. ⑤Here________(come)the bus. ⑥This kind of cloth________(wash)well. ⑦Don't take it away.It________(belong)to me. ⑧He said water________(boil)at100℃. 考点2一般过去时和现在完成时 一般过去时(标志词：yesterday，just now，last year，the other day等)表示动作发生在过去，和现在毫无关系。 现在完成时(标志词：since，in the past/last years，just，recent(ly)，lately，so far＝up to now＝up until now＝by now，already，yet，several/many/...times)则强
虚拟语气: 表示说的话不是事实，不可能发生或者说可能性很小的情况，表达一种愿望、建议、假设。 if were/did, would do if had done, would have done if were to do/should do, would do 举例： If I were you, I would do nothing about it. If you had taken your teacher’s advice, you wouldn’t have made such a mistake. If it were to/ should rain tomorrow(表示降水率很低)，they wouldn’t go shopping. 附注： 虚拟语气，条件状从倒装 状语从句中，去掉if,提前were/ had/ should 如：If I were you, I would give up. →Were I you, I would give up If you had taken the advice, you would have…. →Had you taken the advice, you would have… If the world shou ld come to an end,…… →Should the world come to an end…… 另外，without, but for, otherwise构成的条件状语从句中，也有含蓄的虚拟语气But for the popularization of electricity, we would lead a whole different life today. (popularization 普及，publicity 宣传) Without your help, I would have failed. We’ll go earlier, otherwise we wouldn’t get a seat.（表示可能性小）
虚拟语气 虚拟语气(Subjunctive Mood)这一语法项目是各类英语考试中心测 试的重点之一。虚拟语气是一种特殊的动词形式，用来表示说话人所说 的话并不是事实，而是一种假设、愿望、怀疑或推测。 Ⅰ用以表示虚拟条件的虚拟语气 虚拟条件句的三种基本类型: 1.与现在事实相反。若与现在事实相反，条件从句的谓语用过去式(be通常用were)，主句谓语用“should (would, could, might)+动词原形”： If you took a taxi，you’d get there quicker.如果你坐出租车去，你可以快一点到那里。(但你不坐) If I knew her number I could ring her up. 要是我知道她的电话号码，我就可以给她打电话了。(可惜我不知道) 2.与过去事实相反。若与过去事实相反，条件从句的谓语用过去完成时(had+过去分词)，主句谓语用“should (would, could, might)+have+过去分词”：If I’d left sooner，I’d have been on time.要是我早点动身，我就准时到了。(但我动身太迟了) If we had found him earlier we could have saved his life. 要是我们当时早点找到他的话，我们就可以救活他。(可惜我们找到他太晚了) 3.与将来事实相反。若与将来事实相反，条件从句的谓语用过去式(be通常用were)，主句谓语用“should (would, could, might)+动词原形”： If he went，would you go too? 如果他去，你也去吗?(大概他不会去) If I asked him，I’m sure he’d help us. 如果我向他提出要求，肯定他会帮助我们。(不过我不打算这样做) 大多数的虚拟条件句属于上面三种情况的一种，但并不排除存在条件和 后果中，一个和现在情况相反，另一个和过去情况相反，例如：If you had followed what the doctor said, you would not have been so painful now. 这个句子在高中出现频率颇高。 但是，如果后果用了虚拟语气，而条件却用陈述语气，这种用法是错的。 2. 除了表示虚假条件外，if从句还可以表示对将来的推测，由于是 将来还没有发生的，所以谈不上是真实的还是虚假的，只能说这个事情 发生的可能性有多大。一般情况下，可以用陈述语气的if从句来表示对
实用标准文案 文档大全专题七情态动词和虚拟语气常考点 近两年考查情态动词和虚拟语气的频率呈上升趋势。从整体上把握情态动词的语法特征和语义特征，能够准确理解不同情态动词的细微差异，认真区别具有相同功能、意思相近的情态动词的用法，在真实的交际情景中印证和领悟情态动词的用法和特征。 1 情态动词所表示的多种含义 1. can和could的用法 ①表示能力。如： I can run fast. ②表示客观可能性。如： An experienced driver can have an accident at times. ③表示请求和允许。用could 语气更委婉。如： —Can/Could I go now? —Yes，you can. ④表示猜测、惊异、怀疑、不相信的态度(主要用于否定句、疑问句或惊叹句中)。如：Can this be true? How can you be so careless! This cannot be done by him. 2. may和might的用法 ①表示许可。如： You may drive the car. —May/Might I use your pen? —No，you mustn't. ②用于祈使句中表示祝愿。如： May you succeed! ③表示推测、可能(疑问句不能用于此意)。表推测的might并不是指过去时间，而表示比may把握性略小些。如： He may be very busy now. ④用于表示目的或让步状语从句中。如： No matter what difficulties you may come across，you shouldn't give up. 3. will 和would的用法 ①用于各种人称，表示“意志”“意愿”“决心”等。如： I told her to stop crying，but she just would not listen. ②用于第二人称的疑问句，表示说话人向对方提出请求。用would比用will语气更客气。如： Will/Would you please keep the door open? ③表示真理或习惯，意为“惯于，总是”。如： She will listen to music alone in her room for hours. He would get up early when
Unit13虚拟语气专题讲解 【知识要点】 语气（mood）是一种动词形式，用以表示说话者的意图或态度。 英语有三种语气： ＊直陈语气（indicative mood）---- 事实 France lies to the east of England. ＊祈使语气（imperative mood）---- 请求、命令 Make yourself at home. ＊虚拟语气（subjunctive mood） If there were no air and water , we should not be able to live on the earth. 虚拟语气表示说话人的一种主观愿望或假想，所说的是一个条件而不一定是事实，或与事实相反。 一. 虚拟语气在if条件状语从句中的用法 假设类型条件从句谓语 动词形式 主语谓语 动词形式 与现在事实相反动词的过去式(be用were而不用was) should/ would /could/ might+动词原形 与过去事实相反had + 过去分词 should/ would/could /might + have+过去分词 与将来事实相反1.should+动词原形 2.动词过去式 3.were to+动词原形 should/ would/ could/ might +动词原形 1. 在错综条件句子中，虚拟条件从句和主句动作发生的时间不一致，因此，主句和从句的谓语动词应根据所指的时间选用适当的虚拟语气形式。 1）If I were you，I wouldn't have missed the film last night． 2）If he had followed the doctor's advice，he would recover already．（从句与过去事实相反，主句与现在事实相反。） 2、在if虚拟条件句中，有时可把连词省去，采用倒装语序把谓语动词were或助动词did，had，should 移到句 首构成非真实条件从句的另一种句型，其意思不变。 1）Had we time to spare，we would be glad to go to the park． 2）Were it not for the discovery of electricity，the modern world would experience great inconvenience． 3、有时假设的情况不用if引导虚拟条件从句来表述，而用介词（如without， but for等）引出的短语、分词 （如supposing等）引出的短语、并列连词（如or，otherwise，but，though等）、由动词suppose引出的祈使句或通过上下文的意思来表达。此时句中谓语动词仍采用虚拟语气的相应形式。 1）But for your advice，I would not be able to do this work． 2）Victor obviously doesn't know what's happened，otherwise he wouldn't have made such a stupid remark．。
虚拟语气用法详解 一、条件句中的虚拟语气 1. 条件句中虚拟语气的形式 从句中提出一种与客观现实不相符或根本不可能存在的条件，主句会产生的一种不可能获得的结果。条件句中 的虚拟语气根据不同的时间有三种不同的形式。 2. 条件句中的虚拟语气的举例 (1) 将来时的条件句中的虚拟语气。如： If he should go to Qing Hua University, he would make full use of his time. 如果他要上清华大学的话，他就会充分 利用他的时间了。 If he were to come here, he would tell us about it. 如果他要来的话，他会通知我们一声。 (2) 现在时的条件句中的虚拟语气。如： If he were free, he would help us. 要是他有空的话，它会帮助我们的。 If he studied at this school, he would know you well. 如果他在这所学校学习的话，它会对你很熟悉。 (3) 过去时的条件句中的虚拟语气。如： If I had seen the film, I would have told you about it. 我如果看过这场电影，我会把电影内容告诉你了。 If I had got there earlier, I would have met Mr. Li. 如果我早点到那儿，我就会会到了李先生。 3. 运用条件句中的虚拟语气时，须注意的几个问题 (1) 当从句的主语为第三人称单数时，谓语动词若是系动词be 时，可用was 代替were。但在倒装虚拟结构及if I were you, as it were 中，只能用were。如： Were I ten years younger, I would study abroad. 要是我还年轻十岁的话，我会去国外学习。 If I were you, I would try my best to grasp the chance. 要是我是你的话，我要尽力抓住这次机会。 (2) 有时，虚拟条件句中，主、从句的动作若不是同时发生时，须区别对待。①从句的动作与过去事实相反，而主句的动 作与现在或现在正在发生的事实不符。如： If I had worked hard at school, I would be an engineer, too. 如果我在学校学习刻苦的话，我现在也会使工程师了 If they had informed us, we would not come here now. 如果他们通知过我们的话，我们现在就不会来这里了。
名词性从句之高考真题精选（3） 1. Police have found appears to be the lost ancient statue. A. which B. where C. how D. what 2. I want to tell you is the deep love and respect I have for my parents. A. That B. Which C. Whether D. What 3. She is very dear to us. We have been prepared to do__________ it takes to save her life. A. whichever B. however C. whatever D. whoever 4. Some children want to challenge themselves by learning a language different from ________ their parents speak at home. A. what B. that C. which D. one 5. I want to be liked and loved for __________I am inside. A. who B. where C. what D. how 6. I was surprised by her words, which made me recognize silly mistakes I had made. A. what B. that C. how D. which 7. His writing is so confusing that it’s difficult to make out _________it is he is trying to express. A. that B. how C. who D. what 8. The shopkeeper did not want to sell for ________ he thought was not good enough. A. where B. how C. what D. which 9. The how to book can be of help to ________wants to do the job. A. who B. whomever C. no matter who D. whoever 10. Could I speak to ________is in charge of International Sales please? A. who B. what C. whoever D. whatever 11. __________ team wins on Saturday will go through to the national championships. A. No matter what B. No matter which C. Whatever D. whichever 12. _______fashion differs from country to country may reflect the cultural differences from one aspect. A. What B. That C. This D. Which 13. Having checked the doors were closed, and _________ all the lights were off, the boy opened the door to his bedroom. A. why B. that C. when D. where
虚拟语气在非真实条件句中 ①错综时间条件句: 当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时，被称为错综时间条件句，动词的形式要根据它表示的时间作出相应的调整。如： If you had followed my advice just now, you would be better now. If you had studied hard before, you would be a college student now. ②if省略句 在条件句中可以省略if, 把were, had, should提到句首，变成倒装句式。否定句时not留在原来位置不变。如： If I were at school again, I would study harder. →Were I at school again, I would study harder. 如果我还有上学的机会，我会更加努力学习。 If you had come earlier, you would catch the bus. →Had you come earlier, you would catch the bus. 如果你来得早点，你就能赶上公共汽车。 If it should rain tomorrow, we would not go climbing. →Should it rain tomorrow, we would not go climbing. 如果明天下雨的话，我们就不能登山去了。 ③用介词代替条件状语从句 常用的介词有with, without, but for。如： What would you do with a million dollars? (=if you had a million dollars)
语法专题一：定语从句 1. 定语从句的几个基本概念： 1) 先行词：即被定语从句修饰的名次或代词，通常位于定从的前面。 2) 先行词在从句中担当成份：根据不同成份，用相应的关系代词或关系副词。 3) 关系代词：即先行词在定从中作主、宾、表、定。 作主语：指物，则用that, which引导，且不能省略；指人，用that, who引导，不省略。 作宾语：即及物动词宾语和介词宾语：指物，用that, which引导，可省略； 指人，用that, who, whom引导，可省略。 注意：如将介词提到了定从之首，先行词指人，只能用whom; 指物只能用which。 作表语：一般指人、指物皆用that, 可省略。 作定语：指人、指物皆用whose,不省略。 4) 关系副词：即先行词在定从中作状语，指时间用when, 地点用where, 原因用why，亦 可用介词+which替代。 所谓作状语：即先行词不能直接放入从句中，需要有一个介词连接，而从句中却没有这个介词。 5) 非限制性定语从句：即用逗号与主句或先行词分开，用于补充说明。 (1) which: 用于指代先行词（物），或整个主句，不能省略。 (2) who / whom: 用于指代先行词（人），不能省略。 (3) all / some of + which / whom: 用于指代先行词的部分。 (4) as为关系代词，“正如、就像”的意思, 引导定从时可置于句首、句中或句末。 注意：在非限制性定从中，不能用that。 2. 一些特殊用法： 1) 一般只用that引导从句的情况： (1) 限制性定语从句中，当先行词被强调，如被any, every, each, few, little, no, some, the only, the very等修饰时； (2) 先行词是不定代词all, few, little, much, something, nothing, anything等时； (3) 先行词被序数词或形容词的最高级所修饰时； (4) 先行词既有人又有物时； (5) 当句中已有who时，为避免重复。 2) 一般只用which引导从句的情况： (1) 引导非限制性定语从句，指前面的某名词或它前面的整个主句时； (2) 引导介词、介词短语提前的定语从句时； (3）当先行词为集体名词时，着眼于整体，用which；着眼于各个成员，用who； (4) 替代某些固定短语中的指示代词，如this, that等, 引导定从。 3) 由as引导的定语从句的几种常见情况： (1) as引导非限制性定语从句，说明整个主句的内容，和which引导定语从句代替整个 句子的区别是：which不能放在句首，而as则可以；在句中，as有“正如”、“就象” 之意，而which则没有此意； (2）当先行词前有the same，such修饰时，或在“so / as…as”结构中，表示“那样…… 以致”，后用关系代词as引导限制性定语从句； (3) 在such…as结构中，as为关系代词，替代先行词，引导的是定语从句；在such…that 结构中，that为连词，引导的是一个完整的结果状语从句。
虚拟语气 1. I wish (that可省略,下同)I knew the answer to the question.我希望知道这个答案。(事实上是不知道) 2. He wishes he hadn't lost the chance. 他真希望没有失去机会。(其实已失去) 3. You wished she would arrive the next day.(would + arrive) 你希望她第二天会到。(事实上她还没到) Subjunctive Mood作为专门表达假设意义和其他非事实意义的动词形式，仅是古英语遗留下来的残余。它仅有两个形式，即be型虚拟式和were型虚拟式。 Be型虚拟]----- be型虚拟式是以动词原形表示的，不管主语是什么人称，动词一律用原形，如动词为被动态，则助动词be也用原形。其主要用法如下： 1)用于表命令、决定、建议、坚持等词语之后的that分句中 这一用法又分三种情况： a)用在 decide,decree,demand,insist,move,order,prefer,propose,recommend,request,require, suggest,vote等动词之后的that分句中.（宾语从句） 在expect, believe, think, suspect等动词的否定或疑问形式后的宾语从句中，我们经常用“should＋动词原形(或完成形式)”，表示惊奇，怀疑，不满等。 He ordered that all the books be sent at once. He ordered that all the books be sent at once. we propose that somebody neutral take the chair. She insisted that she go to the south for her holiday. b)用在 advisable,appropriate,desirable,essential,fitting,imperative,important,impossible,nece ssary,obligatory,proper等形容词之后的that分句中。（主语从句） It is essential that all the facts be examined first. It was appropriate that thisi tax be abolished. I thousht it advisable that an armed guard stand in readiness. c)用在 decision,decree,demand,instruction,order,requirement,resolution等名词之后的that分句中。 The board has given instructions that the agent fly to Boston. We were faced with the demand that this tax be abolished. Their decision was that the school remain closed. 在这一用法中be型虚拟式能与“should+不定式”交替使用，也能与to-不定式交替使用。 He ordered that the books be sent at once . = He ordered that the books should be sent at onc. = He ordered that the books to be sent at once. 2）用于由if,though等引导的分句中.
情态动词之高考真题精选（3） 1. He is a bad-tempered fellow, but he __________be quite charming when he wishes. A. shall B. should C. can D. must 2. Traveling by subway __________sometimes be quite an adventure, especially during the rush hour. A. must B. can C. shall D. should 3. It be the vocabulary that caused you the problem in the exercise because you know a lot of words. A. may B. couldn’t C. should D. needn’t 4. Using AI, many companies are now conducting experiments that__________ possible just a few years ago. A. would have been B. might have been C. shouldn't have been D. couldn't have been 5. I __________my examination easily but I made too many stupid mistakes. A. should pass B. could have passed C. had passed D. must have passed 6. Some people who don't like to talk much are not necessarily shy; they _________ just be quiet people. A. must B. may C. should D. would 7. We _________have proved great adventurers, but we have done the greatest march ever made in the past ten years. A. needn't B. may not C. shouldn't D. mustn't 8. It wasn’t right to me that such near neighbors not know one another. A. could B. would C. should D. might 9. According to the air traffic rules, you _______ switch off your mobile phone before boarding. A. may B. can C. would D. should
虚拟语气在非真实条件句中
①错综时间条件句: 当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时，被称为错综时间条件句，动词的形式要根据它表示的时间作出相应的调整。如： If you had followed my advice just now, you would be better now. If you had studied hard before, you would be a college student now. ②if省略句 在条件句中可以省略if, 把were, had, should提到句首，变成倒装句式。如：If I were at school again, I would study harder. →Were I at school again, I would study harder. 如果我还有上学的机会，我会更加努力学习。 If you had come earlier, you would catch the bus. →Had you come earlier, you would catch the bus. 如果你来得早点，你就能赶上公共汽车。 If it should rain tomorrow, we would not go climbing. →Should it rain tomorrow, we would not go climbing. 如果明天下雨的话，我们就不能登山去了。 ③用介词代替条件状语从句 常用的介词有with, without, but for。如： What would you do with a million dollars? (=if you had a million dollars) 如果你有100万元，你会做什么？ We couldn?t have finished the work ahead of time without your help. (=if we
实用英语虚拟语气的解析及其用法讲解 在当前英语语法当中，有一些学生总结的几个难点语法，其中之一就是虚拟语气，怎样判断出句子使用了虚拟语气，是哪一种形式的虚拟语气是学生无法清楚掌握的难点。本文从虚拟语气的定义到各种形式都进行了详细的讲解和分析，并针对各种形式的用法都进行了分析和举例，讲解明白，以帮助学生们能更好地了解和掌握英语语法中这个难学的语言现象。 标签：英语虚拟语气；定义；用法；分析及举例 一、虚拟语气的定义（Subjunctive Mood） 在我们了解什么是虚拟语气前，大家首先要弄清楚英语的语气表达，也就是英语学习中我们都会用到哪些语气。英语中的语气（Mood）可以分为：1The Indicative Mood（陈述语气）；2The Interrogative Mood（疑问语气）；3The Imperative Mood（祈使语气）；4The Subjunctive Mood（虚拟语气）4类。陈述、疑问、祈使语气在本文中就不再过多阐述。而我们在这里重点讲解虚拟语气。什么是虚拟语气呢？虚拟语气用来表示假想，而不表示客观存在的事实，所说的是一个条件，不一定是事实，或与事实相反。虚拟语气通过谓语动词的特殊形式来表示。虚拟语气表示说话者所说的话并非事实，或难以实现的，甚至表达相反的概念。另外表示主观愿望或表达某种强烈的感情时，也用虚拟语气。 二、虚拟语气的判断及用法 （一）if条件状语从句中虚拟语气的判断 if条件状语从句有真实条件句和非真实条件句。假设条件可以实现的句子为真实条件句，反之为非真实条件句，要用虚拟语气。其形式分为以下三种：1与过去事实相反的假设。结构为：从句的谓语动词用“had+过去分词”，主句用“should（would，could，might）+have+过去分词”。 2与现在事实相反的假设。结构为：从句的谓语动词用过去式，系动词用were，主句的谓语用“should（would，could，might）+动词原形”。 3与将来事实相反的假设。结构为：从句的谓语动词用“should（wereto）+动词原形”，主句用“should（would，could，might）+动词原形”。 （二）宾语从句中的虚拟语气 1wish后接宾语从句中的虚拟语气：根据从句的意义来判断 A：表示与现在和将来事实相反的愿望，从句谓语动词用过去时态。例如：