虚拟语气句型

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英语-虚拟语气

Some Exercise
were 1. Even if he _______(be) here, he couldn’t solve the problem. were 2. He is playing the piano as if he _______ (be) Chopin. 3. He looks so happy as if hehad passed ________(pass) the exam already.
Some Exercise
had married 1. He would rather her___________(marry) a dog last year. didn’t go 2. I would rather you __________ (not go) there. stayed 3. I’d rather you ___________(stay) at home all day today. 4. I’d sooner you hadn’t done (do) yet. __________
5. ห้องสมุดไป่ตู้e insisted (坚决认为) that Tom broke _____(brake) the glass. was 6. His face suggested (表明) that he _____ angry.(be)
以lest, for fear that, in case引出从句
Some Exercise
1. He is not a pilot, but he wishes were he______ (be). had met 2. I wish I ___________(meet)him yesterday. would be 3. I wish it __________(be) fine tomorrow. had got up 4. If only I ___________(get up) early yesterday.

虚拟语气用法归纳

虚拟语气用法归纳虚拟语气是一种特殊的语法形式，用来表示说话人所表达的事实并非真实的情况。

虚拟语气通常用于陈述某种假设、愿望、建议或推测。

在英语中，虚拟语气可以用于多种句型和场景中。

以下是关于虚拟语气的一些常见用法归纳：1. 条件句虚拟语气经常用于表示条件句中的不可能或未实现的情况。

在条件句中，主句和从句之间通常以if连接，其中的动词使用虚拟语气形式，即用过去式或过去完成式表示未来或现在的假设情况。

例如："If I were you, I would go to bed early."（如果我是你，我会早点上床。

）2. 虚拟愿望虚拟语气还可以用于表达愿望或对现实情况的怀疑。

在这种情况下，常用的句型是"if only"或"would rather"等。

例如："Ifonly I had more money, I would travel the world."（要是我有更多的钱，我就会周游世界。

）"I would rather you went with me."（我宁愿你和我一起去。

）3. 动词要求有些动词，如命令、建议、要求等，常常要求其后的从句使用虚拟语气。

这些动词包括：recommend（推荐）、insist（坚持）、demand（要求）、require（要求）、suggest（建议）等。

例如："She insisted that he be on time for the meeting."（她坚持要求他准时参加会议。

）4. 形容词和名词后接从句有时，形容词或名词后接从句时，从句中的谓语动词要使用虚拟语气。

这种情况通常表示说话人对从句所表达的内容的怀疑或不同意。

例如："It is important that he study hard for the exam."（他认真备考这个考试很重要。

虚拟语气的八种情况

No.1虚拟语气的常见类型和句型(1)由wish引起的表示愿望的虚拟语气A.用wish表示对现在的愿望时，它所引起的宾语从句中谓语动词形式为：过去式(be动词用were)。

B.用wish表示对将来的愿望时，它所引起的宾语从句中谓语动词形式为：would, could, might+ 动词原形。

C.wish用于对过去的事实表示一种不可能实现的愿望时，宾语从句中的谓语动词形式为：had+动词过去分词或could, would + have +动词过去分词。

The picture exhibition bored me to death; I wish I had not gone to it.---“I let Joe borrow our radio for the afternoon.”---“That’s all right, but I wish he would buy one of his own.”I wish that he weren’t so lazy.(2)had hoped引起的宾语从句中备用语动词形式为would+动词原形，表示一种过去未实现的愿望或令人失望的事。

His father had hoped that his son would go to business with him, but his son became an artist later.(3)would (had) rather, would as soon, would sooner和would prefer所引起的从句中要求用过去式表示当时或将来的情况，用过去完成时表示过去的情况，表示希望或婉转的责备。

例如：I’d rather you posted the letter right away. 我倒希望你把这封信立刻寄出去。

I would prefer he didn’t stay there too long.我倒希望他不要在那儿可得太久。

常见的虚拟语气句型

常见的虚拟语气句型一、虚拟语气用于非真实条件句中1．与现在事实相反的虚拟语气形式If＋主语＋动词的过去式（be要用were）……, 主句主语＋would（或should, could, might）＋动词原形。

2．与过去事实相反的虚拟语气形式If＋主语＋had＋过去分词……, 主句主语＋would（或should, could, might）＋have＋过去分词。

3．与将来事实相反的虚拟语气形式If＋主语＋动词的过去式（或were to ＋动词原形, 或should ＋动词原形）……, 主句主语＋would（或should, could, might）＋动词原形。

二、虚拟语气的其它句型1虚拟语气用在动词wish带的宾语从句中, 宾语从句的谓语动词形式为:①谓语动词用过去式（be用were）表示现在的情况。

例如: I wish I didn't have a cold. 但愿我没有感冒。

②谓语动词用过去完成式表示过去的情况。

例如: I wish I had seen you yesterday.③谓语动词用would（或could, might）＋动词原形表示将来的情况。

例如: I wish you could come tomorrow. 但愿你明天会来。

注: as if（＝as though）引导的从句和if only后面所跟的句子也要用虚拟语气, 其形式和动词wish所带的宾语从句的形式相同。

例如: When a pencil is partly in a glass of water, it looks as if it were broken.If only I had followed his advice. 若是我听了他的劝告就好了。

2用介词短语（without..., but for... ）、副词（otherwise）表示某种假设的情况, 相当于if引导的虚拟条件句。

例如: Without electricity human life would be quite different today.3虚拟语气用在It ＋be ＋important（necessary, strange, natural）＋that clause句型中, that clause的谓语动词应为“（should ＋）动词原形”。

虚拟语气十大句型

虚拟语气的十大句型一、虚拟条件句：条件状语从句是非真实情况，在这种情况下要用虚拟语气。

1．条件从句与现在事实不一致，其句型为：句型1：If ＋主语＋过去时，主语＋ should (could, would, 或might) ＋动词原形(1) If I were you, I would study hard.(2) If it rained, I would not be here now.2．条件从句与过去事实不一致，其句型为：句型2：If ＋主语＋had＋过去分词，主语＋ should（could, would, 或might）＋ have ＋过去分词(3) If the doctor had come last night, the boy would have been saved.(4) If I had not studied hard, I would have failed in the exam last term. 3．条件从句与将来事实不一致，其句型为：句型3：If ＋主语＋过去时/ should ＋动词原形/ were to＋动词原形，主语＋ should (could, would, 或might) ＋动词原形(5) If it should rain tomorrow, we would stay at home.(6) If I were to go to the moon one day, I could see it with my own eyes.(7) If you missed the film tonight, you would feel sorry.注意问题：1．If条件句中绝对不可以出现would。

2．根据句中的时间状语，有时可能出现“混合虚拟”的情况，即主句可能是现在的情况，条件句也许是发生在过去的情况，但都要遵守上述句型。

如：(8) If you had studied hard before, you would be a college student now and you would graduate from a college in four years’ time.3．条件句中如果出现were, had, should可省去if，将主语与这些词倒装。

初中的解析虚拟语气的用法与句型

初中的解析虚拟语气的用法与句型解析虚拟语气是初中英语中的一个重要语法知识点，它表示一种与事实相反或不太可能实现的情况。

在语言表达中，虚拟语气经常用于表达建议、要求、命令、意愿、愿望、假设以及感叹等语境。

本文将通过解析虚拟语气的用法和常见句型，帮助初中学生更好地理解和运用虚拟语气。

一、虚拟语气的用法1. 虚拟语气用于表达与现在事实相反的情况。

例如：If I were you, I would study harder.如果我是你，我会更加努力学习。

2. 虚拟语气用于表示过去不可能实现的情况。

例如：He wishes he had bought that car.他希望自己当初买了那辆车。

3. 虚拟语气用于表达对现在或将来的建议、要求或愿望。

例如：I suggest that she go to bed early tonight.我建议她今晚早点睡觉。

4. 虚拟语气用于表示对过去行为的反悔、后悔或愿望改变。

例如：I wish I hadn't eaten so much dessert.我希望我没有吃那么多甜点。

5. 虚拟语气用于表示对某种假设或条件的情况下的想象。

例如：If I had a million dollars, I would travel around the world.如果我有一百万美元，我会环游世界。

二、虚拟语气的常见句型1. 条件句虚拟语气在条件句中，虚拟语气常常与过去时态连用。

例如：If I were rich, I would buy a big house.如果我有钱，我会买一栋大房子。

2. 祝愿句虚拟语气在表示祝愿的句子中，虚拟语气通常使用“wish”引导，后跟过去式或过去完成式。

例如：I wish I could go to the party with you.我希望我能和你一起去参加聚会。

3. 建议句虚拟语气在表示建议的句子中，虚拟语气通常使用“suggest”、“recommend”等动词引导，后跟从句的动词原形。

英语虚拟语气的用法和诀窍

最基本的虚拟语气句型:1. 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。If places were alike, there would be little need for geographers.如果各个地方都一样，就不需要地理学家了。2. 虚拟过去时是表示与过去事实相反的假设，if 从句的谓语形式用过去完成时即had＋过去分词，主句用would should could might + have +过去分词。If he had known your address yesterday,he would have telephoned you.3. 虚拟将来时是表示对将来实现的可能性很小的或不确定的假设。If从句的谓语形式用一般过去式或用were to should +动词原形，主句用would shouldcould might +动词原形。If he were to leave today, he would get there by Friday4. 省略if 采用倒装语序的条件句。有时可以把含有助动词、情态动词、be或have的虚拟条件句中的连词if省去，而将had , should, were 等词提到主语之前，即用倒装结构。If he had worked harder, he would have got through the exams.==Had he worked harder, he would have got through the exams.If he were to leave today, he would get there by Friday.==Were he to leave today, he would get there by Friday.If I were in your place, I wouldnt do that.==Were I in your place, I wouldnt do that.5. 有时虚拟条件句并没用if 从句表示出来，而是用介词短语otherwise, or, without, but for、上下文或其它方式来表示。如 We didn't know his telephone number; otherwise we would have telephoned him. Without you help, I wouldnt have achieved so much. But for 要不是......的意思your help, I would not have succeeded.二: 虚拟语气在从句中用should的情况:1. 在表示建议,要求,命令,想法的动词后的从句里, 用should + 动词原形, should 可以省略. 如 advise, agree, command, decide, demand, determine, grant, indicate, insist, order, prefer, propose, request, require, stipulate, suggest, urge, vote.常考到的是: suggest, advise, demand, require, propose, insist, order, request.His doctor suggested that he should take short leave of absence.The author proposed that TV should be turned off at least one hour every day.2. 在表示建议,要求,命令,想法的名词后的从句里, 用should + 动词原形, should可以省略. 如 advice, decision,agreement, command, decree, demand, determination, indication, insistence, order, preference, proposal, request, requirement, stipulation etc.It was Bills suggestion that everyone should have a map.His suggestion was that everyone should have a map.He gave us a suggestion that everyone should have a map.3. 在It iswas +形容词后的that 从句中用should的结构, should 可以省略. 这类形容词常见的有: advisable, anxious, compulsory, crucial, desirable, eager, essential, fitting, imperative绝对必要, impossible, improper, important, natural, necessary, obligatory, possible, preferable, probable, recommended, urgent, vital etc.Its natural that she should do so.It is essential that we should tell her the news.4. 在 lest 和 for fear that以免,in case以防从句中用should, should 可以省略.She walked quietly lest she should wake up her roommates.Have your gun ready in case we should need it.三: wish 后的 that 从句中:1. 表示现在或将来的愿望,从句中过去式.I wish I knew his address.I wish I were young.2. 表示过去没有实现或不可能实现的愿望, 从句用过去完成式或would, could, might + have + 过去分词.I wish you had written to him.I wish I could have slept longer this morning, but I had to get up and come to class.3. 如果将wish改成wished, 其后that 从句中动词的形式不变.4. 如果that 从句中用would , 一般表示对现状不满或希望未来有所改变或请求I wish he would answer my letter.I wish prices would come down.I wish you would help me.I wish you would stop asking silly questions.四: 在 Its about high firstsecond, third etctime 后的that 从句中,用过去式.表示该是做什么的时候了It is about time you were in bed.It is high time we left.It is the first time I came here.五: 在would rather, would sooner, would just as soon 后的that从句中,用过去式或过去完成式,表示宁愿做什么I would rather he came tomorrow than today.John would rather that she had not gone to the party yesterday evening.六: 在if only如果....就好了的意思感叹句中,谓语动词与wish宾语从句的虚拟形式相同.If only he didnt drive so fast!现在If only she had asked someones advice.过去If only the rain would stop.将来七: 在as if as though 从句中,表示和现在事实相反或对现在情况有所怀疑,用过去式;表示过去想象中的动作或情况, 用过去完成式.He speaks as if he were on the spot.She spoke to me as if I were deaf.This device operated as though it had been repaired.注: 1. 在 as if as though 句中, 如果有可能成为事实, 用陈述语气.He looks as if he is going to be ill.2. 在 insist 后的从句中, 如果是坚持自己, 用陈述语气, 坚持别人做什么事情, 用虚拟语气.She insists that she is right.She insisted that I should finish the work at once.

虚拟语气15种句型

3.as if / as though后的表语或状语从句 (与wish相同)
含义动词形式
例句
现在 did / were
He looks as if he knew the little girl.
过去 Have done
It appeared as if nothing had
happened.
5.动词形式为(should)+do 的虚拟
2. It’s + adj.+that 的主语从句 (adj: necessary / essential/
important / natural / strange / possible / impossible
eg. It is important that we should attend the meeting.
• 对过去的猜测 • 肯定 must have done • 否定 can / could not have done • 可能 may / might have done
• 本应该做（实际没有做，有责备意思） • should have done • shouldn’t have done • 本来有必要作（实际没有做，不含责
desire 命令：order / command/ 坚持：insist 不管是动词还是名词，不管是主动还是被动
，不管是引导主语从句，宾语从句，表语从句还是同位语从句，都要用（should） do
5.动词形式为(should)+do 的虚拟
• My suggestion is that we should listen to his opinion first.
It is time that we stopped work and went home.

虚拟语气句型及其表现形式

虚拟语气句型及其表现形式英语句子根据语气可以分三种：陈述语气，祈使语气和虚拟语气。

【概念】虚拟语气常用来表示假设、愿望、猜测、比喻或决定、主张、建议和命令等。

虚拟语气主要用于以下一些情况：一．在由if引导的非真实条件状语从句中If he were not ill in bed, he might come to class.If I hadn’t forgotten your phone number, I should have called you last Sunday.If I were to do it again tomorrow, I might do it in different ways.注意：⑪如果从句中有助动词had, should, were，可以省略if，并采用部分倒装形式，但如果从句中没有，则不能这样做。

例：Had he seen you yesterday, he would have asked you about it.Should it (Were it to) rain tomorrow, the crops would be saved.小练习：If he were not ill in bed, he might come to class.__________________________________________.If I had enough money, I would buy a new car.__________________________________________.⑫如果主句的谓语和从句的谓语在时间上不一致，采用混合时间虚拟。

如一个事情发生在过去，一个是现在发生的等。

这时动词的形式要根据它所表示的时间来调整。

例：If I were you, I would have attended the lecture.如果我是你，我就去听演讲了。

高中英语虚拟语气的十大句型

高中英语虚拟语气的十大句型虚拟条件句：条件状语从句是非真实情况，在这种情况下要用虚拟语气。

1．条件从句与现在事实不一致，其句型为：句型1：If ＋主语＋过去时，主语＋should (could, would, 或might) ＋动词原形(1) If I were you, I would study hard.(2) If it rained, I would not be here now.2．条件从句与过去事实不一致，其句型为：句型2：If ＋主语＋had＋过去分词，主语＋should（could, would, 或might）＋have ＋过去分词(3) If the doctor had come last night, the boy would have been saved.(4) If I had not studied hard, I would have failed in the exam last term.3．条件从句与将来事实不一致，其句型为：句型3：If ＋主语＋过去时/ should ＋动词原形/ were to＋动词原形，主语＋should (could, would, 或might) ＋动词原形(5) If it should rain tomorrow, we would stay at home.(6) If I were to go to the moon one day, I could see it with my own eyes.(7) If you missed the film tonight, you would feel sorry.注意问题：1．If条件句中绝对不可以出现would。

2．根据句中的时间状语，有时可能出现“混合虚拟”的情况，即主句可能是现在的情况，条件句也许是发生在过去的情况，但都要遵守上述句型。

如：(8) If you had studied hard before, you would be a college student now and you would graduate from a college in four years’time. 3．条件句中如果出现were, had, should可省去if，将主语与这些词倒装。

虚拟语气,汉译英句型

常考虚拟语气句型第一种：由“ if ”引导的虚拟句子1. 与现在的事实相反：[If --- + were/did---, --- + would do---]If I were you , I would marry him. 如果我是你,就会嫁给他。

2. 与过去的事实相反：[If --- + had done---, --- +would have done---]If you had worked hard , you would have passed the exam.如果你用功学习,就会通过考试了。

3. 与将来的事实可能相反：[If ---+ should do---, ---+ would do---]If it should rain tomorrow , what would you do ? 如果明天下雨,你怎么办?第二种：用在表示要求、建议、命令等的动词或名词从句中，从句谓语形式为：“---(should ) + do sth”(在美语中should常省去) 。

insist (坚持) , suggest (建议) , order(命令) , propose (建议) , demand (要求) , command (命令) , advise (建议) , desire (要求、请求) , request (请求) , require (需要、要求) , ask (要求) , prefer (宁愿), recommend(推荐) , arrange ( 安排) , advocate ( 拥护、提倡) ,maintain(坚决主张)等后面的宾语从句中。

第三种：用在“It + be + important (,necessary , natural , essen tial , strange , absurd , amazing , annoying , desirable, surprising , vital , advisable , anxious , compulsory , crucial , imperative , eager , fitting , possible , impossible , improper , obligatory , probable , preferable , strange , urgent 等, 以及insisted , suggested , ordered , requested , arranged , recommended 等) + that ---”结构中的that 引导的主语从句中，从句谓语形式为：“---(should ) + do sth”(在美语中should常省去) 。

虚拟语气特殊句型

要是我没错过火车就好了！
(2) = as long as常用陈述语气.
We can surely overcome these difficulties if only we are closely united.如果我们紧密团结就一定能战胜一切困难。
5.It’s necessary /strange/ natural/ important + that-Clause从句中的动词要用虚拟，即（should）+动词原形
(暗含条件是butfor your help)
（4）This same thing, happening in wartime, would lead to a disaster.
(条件暗含在分词短语happening in wartime中)
（5）He must have the strength of a hippopotamus, or he never could have vanquished that great beast.
（2）我宁愿不再见到你。
I’d rather I didn’t see you again.
（3）我倒希望他们和我一起去。
I would rather they went with me.
注意：如果表示的事情可能会发生，那么状语从句中的谓语动词可用陈述语气。
It looks as if you are tired.
含蓄条件句非真实条件句中的条件从句有时不表现出来只暗含在上下文中这种句子叫做含蓄条件句
虚拟语气特殊句型
注意:在主语＋would (had) rather＋that宾语从句中，从句谓语一般用过去式表示虚拟形式。例如:
（1）我真希望你告诉我真相。

虚拟语气15种句型总结

C.didn’t hurt; would go
D.didn’t hurt; would have gone
17 21 19
2.wish 后的宾语从句 = if only
含义
动词形式
对现状表达愿望 Did / were
对过去表示遗憾/后悔
Had done
例句
I wish I had a little lab of my own.
备意思）
• Need have done • Needn't have done
Practice
1. If I _k_n_e_w__ (know) her address, I would write to her. 2. What would you have done if you _h_a_d__m__is_s_e_d(miss) the train? 3. If he h__a_d_n_o_t_b__ee_n_ il(lnot be ill ), he would have done something. snows 4. If itw__er_e__to__/s_h_o_u_l_d__sn_o_w__/_s_n_o_w_e_d(snow) tomorrow, we _sh__o_u_ld__g_e_t_u_p_(get up) early.
• My suggestion that we should listen to his opinion first is being discussed.
• 注意当insist—硬说，suggest—表明，不能有虚拟语气。
5.动词形式为(should)+do 的虚拟
2. It’s + adj.+that 的主语从句 (adj: necessary / essential/

虚拟语气讲义(15个句式)

虚拟语气讲义1．虚拟语气句型1If + were/ did/ (动词的过去式), 主语+would/ might/ should / could + do 。

(表示对现在的假设)eg. If I were you, I would not be so proud . 如果我是你,我不会如此自负.eg. I don’t have a cellphone. If I had one , it would be convenient for me to get in touch with others 我没有手机，如果我有手机的话，和别人联系就方便的多了。

eg. If I were in your position, I would think better of it .如果我处在你现在的境地，我会重新考虑然后放弃。

2. 虚拟语气句型2If + had done, 主语+would/ might/ should / could + have done表示对过去或已经发生事情的虚拟假设。

eg. What a pity it is that you didn’t attended the concert yesterday! If you had attended the concert, you would have seen the famous singer.真遗憾你昨天没有去听音乐会。

如果你去了，你就会见到那位名歌手。

eg. Anyone in his position would have done the same= If anyone had been in his position, he would have done the same.3. 虚拟语气句型3If + were/ did(动词过去式)/should/ were to do , 主语+would/ might/ should / could + do (表示对将来的假设).eg. If he should refuse (= if he were to refuse = if he refused ), it wouldn’t matter万一他拒绝了. 那也没有什么关系.eg. If you shouldn’t pass the college entrance e*amination, what would you do"万一你高考不中，你该怎么办？4. 虚拟语气条件句的倒装在虚拟条件句中，如果出现有were, had, should，可省去if，可将主语与这些词倒装，构成虚拟倒装句。

虚拟句型结构及用法

虚拟句型结构及用法虚拟语气是用来表达假设、建议、愿望、推测等非现实情况的语法结构。

在英语中，虚拟语气通常出现在条件句、祈使句、疑问句和感叹句中。

以下是虚拟语气的常见句型结构及其用法：1. 虚拟条件句虚拟条件句表示假设的情况，相当于一个条件从句，常常出现在一个实际情况句之后。

虚拟条件句通常由if 引导，后面接一个陈述句。

例如：If I had more time, I would travel more.（如果我有更多时间，我会旅行更多。

）If it rained tomorrow, we would stay at home.（如果明天下雨，我们会呆在家里。

）2. 虚拟过去时虚拟过去时表示对过去的假设，相当于一个虚拟语气的过去完成时。

虚拟过去时通常由had 引导，后面接过去分词。

例如：Had I known about the concert, I would have gone.（如果我知道音乐会的信息，我会去的。

）If I had studied harder, I would have passed the exam.（如果我学习得更努力，我会通过考试的。

）3. 虚拟将来时虚拟将来时表示对将来的假设，相当于一个虚拟语气的将来时。

虚拟将来时通常由should 或were to 引导，后面接动词原形。

例如：Should I go to the party?（我应该去参加聚会吗？）If she were to call me, what would I say?（如果她给我打电话，我会说些什么？）4. 虚拟祈使句虚拟祈使句表示对过去或将来的建议、命令或请求。

虚拟祈使句通常由should 或were to 引导，后面接动词原形。

例如：Should I go to the doctor?（我应该去看医生吗？）If I were to ask him, what would he say?（如果我问他，他会怎么说？）5. 虚拟感叹句虚拟感叹句表示对假设的情况的感叹。

虚拟语气

一、虚拟语气㈠be型虚拟语气⑪用于表示命令、决定、建议等词语之后的that分句中。

①suggest, propose, recommend, insist, decide, decree, demand, move, order, prefer, request, require, vote等表坚持、建议、命令、要求的动词之后的that从句中，谓动用（should）+动原。

The doctor insisted that he (should) not eat meat.He ordered that all the books (should) be sent at once.*注意：在insist后的从句中，如果是坚持自己的意愿，则用陈述语气；坚持别人做什么事情,用虚拟语气。

She insists that she is right.She insisted that I should finish the work at once.*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。

I never thought that he should be such a brave young soldier.②appropriate, advisable, better, compulsory, crucial, demanded, desirable, desired, essential, fitting, imperative, important, impossible, incredible, natural, necessary, obligatory, ordered, possible, preferable, probable, proper, recommended, requested, required, strange, suggested, urgent, vital等形容词后的that从句中，谓动用(should)+动原。

虚拟语气

虚拟语气句型 1 （与现在事实相反）在条件句中用虚拟语气是表示对现在情况的假设，是一种非真实条件句。

句型：If +主语did (were)…，主语would do …主句中除了would之外，还可用情态动词could, might, should.If I were you, I would (could, might, should) help him.虚拟语气句型 2 （与过去事实相反）句型2是对过去情况的假设，表示与过去事实相反的条件和结果。

句型：If 主语 had done，主语 +would have done虚拟语气句型 3 （与将来事实相反）句型3是对将来情况的假设，表示与将来事实相反或可能相反的条件和结果。

句型：If +主语were to / should + 动词原形…，主语woulddo…虚拟语气句型 4 （错综时间虚拟条件句）有时条件从句和主句所表示的动作在时间上可以不一致（例如一个与过去事实相反，另一个与现在事实相反），这种虚拟条件句就称为错综时间虚拟条件句。

在这种条件句中，动词的形式要根据具体情况进行调整。

例句：She would never have behaved like that if she had some common sense.如果她有一些常识的话，她就决不会像那样做了。

If he had listened to me, he would not be in such trouble now.如果他听了我的话，他现在就不会有这样的麻烦。

If I had a bike (now), I would have lent it to you yesterday.假如我有自行车，昨天早就借给你了。

If you had not studied the problem carefully, you would find difficulty now.如果当初你没有认真研究这个问题，现在你就会遇到困难。