条件句表示主句的条件,分真实条件句和虚拟条件句两种。
a. 真实条件句表示条件是真的或有可能实现的, 采用陈
述语气。
b. 虚拟条件句表示条件是无法实现或几乎无法实现的,
采用虚拟语气。
8/13/2020
一、用法归纳:虚拟语气在条件状语从句中的用法
主从 句构 成时态
虚拟条件
从句(if …)主 句与现在事
实相反的假设与过去事
实相反的
假设If + 主语 + did (be 用 were )
主语 + would/ should/could/ might +do If + 主语 + had done
主语 + would/ should/could/ might have done
主从 句构 成虚拟条件从句(if…)主 句
与将来情况相反的假设①If + 主语 + did ② If + 主语 +were to do ③ If + 主语 +
should do
主语 +
would/ should/could/ might do 时态
二、 虚拟语气在条件从句中的应用
1）与现在事实相反
从句谓语：主句谓语：If I were you, I would go there.
过去时
would, should, could, might +动词原形
注意：在虚拟语气中，只能用were ，不能用was.
If I had a lot of money I would buy a villa
2）与将来事实相反从句谓语：主句谓语：1) If it were Sunday tomorrow, I should go to see a film.
2) If he should have time next Sunday, he would go to visit the Great Wall.
3) If I were to be twenty next year, I could take the course.1）过去时would, should, could, might +动词原形
2）should + 动词原形3) were to + 动词原形
3）与过去事实相反
从句谓语：主句谓语：e.g.
① If he (come)earlier, he (see)her.
had + done
would, should, could, might + have +done ②If he (drive)more carefully, he (not have)the car accident yesterday.had come would have seen had driven would not have had
三、 if的省略
(1) 当if条件句中含有助动词had,should或 were时，可以省略 if,而将had,should或 were提到句首，从而构成倒装虚拟句。Eg:
①Had such disaster occurred, the damage would have been incalculable.
②Were he to tell us everything,we would try to solve this problem.
(2)如果if条件句是含not的否定句，省略if时,not不能与助动词had ,should或were同时提前。
Eg :
如果不是因为他们的帮助，
Had it not been for their assistance,
If it had not been for their assistance,
we couldn’t have finished the task ahead of time.
四、含蓄条件的虚拟语气
假设的情况有时不是用一个条件句来表示，而是隐含在上下文中。表示暗含条件的方式有：
1.介词或介词短语，如：without,but for,but that等。
But for your help, I couldn’t have made such great progress in English.
2.连词，如：but,or,or else 等。
I would be most glad to help you, but I'm busy now.
表示暗含条件的方式有：
3.副词,如：otherwise
Eg: We didn’t know his telephone number; otherwise we would have telephoned him.
4.比较等级。
Eg:
(1)A more careful person wouldn’t have made so many mistakes.
(2)Given more time, I would have been able to finish the experiment.
五、有时虚拟条件从句与主句的时间不一致，会出现错综时
间句的虚拟语气
过去现在
1)If he had followed the doctor’s advice, he would be well now.
2) If I were you ,I would not have gone to see the film yesterday.
现在过去
在混合虚拟语气结构中，从句表示的动作与主句表
示的动作的时间不一致，这时主、从句谓语动词的
形式要根据它们相应的发生时间进行调整。
①If I (speak) to him yesterday,I (know) what to do now.②You (be) much better now if you (take)my advice.③If father (send)me, I (be) here.
Exercises
had spoken should know would be had taken hadn’t sent shouldn’t be
六、虚拟语气在其它从句中的应用
Ⅰ 虚拟语气在表示命令，请求，建议等从句中的应用
虚拟语气可用于表示命令，请求，建议，愿望，要求等名词性从句中，从句谓语形式是“should+动词原形”或“动词原形”
1)用于主语从句，谓语(should)+动词原形
常用的形容词和分词有：essential, imperative, advisable, necessary,important,desirable,urgent,preferable,natural, suggested等。
Eg:It is necessary that you present at the discussion. It was suggested that the electronic device at once.
2)用于宾语从句，常用的动词有：
advise,ask,command,decide,demand,desire,direct,,ord er,prefer,propose,recommend,request,require,, urge, move（提议）等。
?Eg :The lawyer that the case
for one month.
?Eg :The detective hat he a look.
巧借趣句辨用法
?Jane’s pale face suggested that she was ill, and her parents suggested that she (should) have a medical examination.
?She insisted (that) Tom had stolen her car and that he (should) be sent into prison.
3)表语从句或同位语从句
在advice,command,demand,desire,idea,motion,order,plan等名词作主语的表语从句或同位语从句中，谓语动词用(should) do
Eg :
The doctor’s advice is that the patient should be kept quiet. Eg :
He rejected my advice that he should meet my son.
Ⅱ 虚拟语气在wish后从句中的应用
动词wish后所跟的宾语从句用虚拟语气.
(1)表示与现在情况相反的愿望时,
wish后的宾语从句(谓语动词用did/were)
Eg :I wish I were a bird.
I wish I had taken my teacher's advice.
(2)表示与过去情况相反的愿望时,
had done
Eg :I wish that he had not made so much fuss about it.
?(3)表示对将来发生的事情表示希望,祝愿等时, would/could/might+do
?Eg : I wish I could see you later.
?Eg : I wish he might try again.
Ⅲ 虚拟语气在 if only, as if, as though 后面句中的应用基本与wish相同.
Eg :
If only he had followed your advice.
If only she would come.
* He treats me as if I were a stranger.
*She talked about the film as if she had really seen it.
* It looks as if it might rain.
1) He appears as though he ____ an Italian. A. were B. was C. has been D. be 2) It seems as if he ____ there yesterday. A. was B. were C. has been D. had been A D
高考虚拟语气用法详解 一·语气概述 和时态语态一样，语气也是谓语动词的一种形式，它表明说话者的目的和意图。英语中有三种语气：陈述语气，祈使语气和虚拟语气。（有的语法书说语气有四种，即还包括疑问语气）。 eg：①He doesn’t see very well in his right eye .他右眼视力不太好。（陈述语气） ②Have they ever been to Australia ?他们去过澳大利亚没有？（疑问语气） ③Please read through the instruction in advance .请先通读说明书。（祈使语 气） 二·虚拟语气概述 在英语中，由于说话人的意图不同，动词需用不同的形式，称为语气。虚拟语气是指说话人表示一种假设的情况，一种愿望，怀疑，推测，请求等，即认为动词所表示的动作或状态并非事实。虚拟语气可用于状语从句，名词性从句，定语从句及其他结构中。 三·非真实条件句中的虚拟语气 真实条件句（遵循主将从现原则） A.由If引导的两种条件句： 非真实条件句（虚拟语气） 以下为If在非真实条件句中虚拟语气的形式和用法： 假设类型If从句主句 与现在事实相反did (be用were)should/would/ could/might do 与过去事实相反had done should/would/ could/might have done 与将来事实相反1)did 2)were to do 3)should do should/would/ could/might do eg：①If I were you ,I would reconsider their advice .如果我是你的话，我会重新考虑他们的意见。（与现在事实相反） ②You would not have caught a cold if you had put on more clothes .如果你多穿了些衣服，你就不会得感冒了。（与过去事实相反）
虚拟语气的用法总结 语气：语气是动词的一中形式，它表示说话人对某一行为或事情的看法和态度。 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If I were you, I should study English. 一．虚拟语气在条件从句的用法 条件句有两类，一类是真实条件句；一类是非真实条件句，也就是虚拟条件句。 如果假设的情况是有可能发生的，就是真实条件句，谓语要用陈述语气。如If it doesn’t rain tomorrow, we will go to the park. 如果假设的情况是过去或现在都不存在的，或将来不大可能发生的，则是虚拟条件句。如If he had seen you yesterday, he would have asked you about it. 在含有虚拟条件句的复合句中，主句 If her mother had taken the doctor’s advice, she would/might have got well earlier. If it were to rain tomorrow, the match would be canceled. 有时候省略if，采用局部倒装语序。把had /should/were 等动词（不包括行为动词）移到从句的句首。例如： Were it to rain tomorrow, our picnic would be canceled. Had it not been for the storm, we would have arrived in time. Should the earth stop running, what would happen? 二. 错综时间条件句 有时条件从句的动作和主句动作发生的时间不一致，这时需要根据意思采用表示不同时间的动词形式来进行调整。 If she had taken the doctor’s advice, she might still be alive. If I were you, I would have accepted their terms. 三．含蓄条件句
高考英语虚拟语气的用 法总结 -CAL-FENGHAI-(2020YEAR-YICAI)_JINGBIAN
高考英语虚拟语气的用法总结 语气：语气是动词的一中形式，它表示说话人对某一行为或事情的看法和态度。 语气的种类： （1）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 We are ready. What a fine day it is! （2）祈使语气表示说话人的建议，请求，邀请，命令等。如 Open the door, Please. 应注意以下几点： 1.主语通常是第二人称you，但多不出现，动词用原形，否定用do not 或者don’t 加动词原形（或be） 如 Be careful next time. Don’t smoke here. 2.有时为了强调，主语也可以出现，而且可以是第三人称，谓语动词不加-s或者-es 如You be quiet. He stand up. 3.祈使语气可以用do加强语气如 Do come to see this Sunday. 4.在Let’s 的祈使句后，疑问部分通常用shall we；在Let us后，疑问部分用will you 如 Let’s go out for a walk after supper，shall we /Let us clean our classroom, will you 5. 6.祈使句与连词and连用时相当于一个条件句，而and之后则是表示结果。如Think hard and you will have a good idea. （3）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 If I were you, I should study English. 一．虚拟语气在条件从句的用法 条件句有两类，一类是真实条件句；一类是非真实条件句，也就是虚拟条件句。 如果假设的情况是有可能发生的，就是真实条件句，谓语要用陈述语气。如 If it doesn’t rain tomorrow, we will go to the park. 如果假设的情况是过去或现在都不存在的，或将来不大可能发生的，则是虚拟条件句。如If he had seen you yesterday, he would have asked you about it. 在含有虚拟条件句的复合句中， If her mother had taken the doctor’s advice, she would/might have got well earlier. If it were to rain tomorrow, the match would be canceled. 有时候省略if，采用局部倒装语序。把had /should/were 等动词（不包括行为动词）移到从句的句首。例如：
二、虚拟语气的判断： 1. 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”。例如： If it had not rained so hard yesterday, we could have played tennis. 如果昨天没有下大雨，我们就能玩网球了。 (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”。例如： If I were in your position, I would marry her. 如果我是你，我就娶她为妻。 (3) 与将来事实相反的假设。结构为：从句的谓语动词用“should (were to) + 动词原形”，主句用“should (would, could, might) + 动词原形”。例如： If you should miss the chance, you would feel sorry for it. 如果你错过了这次机会，你会难过的。 2. 宾语从句中的虚拟语气。 (1) wish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： I wish they were not so late. 要是他们来得不是这么晚就好了。 B: 表示与过去事实相反的愿望，从句谓语动词用过去完成时态。例如： I wished he hadn't done that. 我真希望那件事不是他做的。 (2) 表示“要求、建议、命令”等动词后面的宾语从句中的虚拟语气。用于此结构的动词有：advise, direct, agree, ask, demand, decide, desire, insist, order, prefer, propose, request, suggest 等。从句的谓语动词用“should + 动词原形”，其中should 可以省去。例如： I insisted that he (should) go with us. 我坚持让他和我们一起去。 注意：当insist 表示“坚持认为”、suggest表示“表明，显示”时，不用虚拟语气。例如：
高考英语虚拟语气的用法总结 语气：语气是动词的一中形式，它表示说话人对某一行为或事情的看法和态度。 语气的种类： （1）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We are ready. What a fine day it is! （2）祈使语气表示说话人的建议，请求，邀请，命令等。如Open the door, Please. 应注意以下几点： 1.主语通常是第二人称you，但多不出现，动词用原形，否定用do not 或者don’t 加动词原形（或be） 如Be careful next time. Don’t smoke here. 2.有时为了强调，主语也可以出现，而且可以是第三人称，谓语动词不加-s或者-es 如You be quiet. He stand up. 3.祈使语气可以用do加强语气如Do come to see this Sunday. 4.在Let’s 的祈使句后，疑问部分通常用shall we；在Let us后，疑问部分用will you 如Let’s go out for a walk after supper，shall we? /Let us clean our classroom, will you? 5.祈使句与连词and连用时相当于一个条件句，而and之后则是表示结果。如Think hard and you will have a good idea. （3）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If I were you, I should study English. 一．虚拟语气在条件从句的用法 条件句有两类，一类是真实条件句；一类是非真实条件句，也就是虚拟条件句。 如果假设的情况是有可能发生的，就是真实条件句，谓语要用陈述语气。如If it doesn’t rain tomorrow, we will go to the park. 如果假设的情况是过去或现在都不存在的，或将来不大可能发生的，则是虚拟条件句。如If he had seen you yesterday, he would have asked you about it. 在含有虚拟条件句的复合句中，主句和从句的谓语都要用虚拟 例如：If he were here, everything would be all right. If her mother had taken the doctor’s advice, she would/might have got well earlier. If it were to rain tomorrow, the match would be canceled. 有时候省略if，采用局部倒装语序。把had /should/were 等动词（不包括行为动词）移到从句的句首。例如：
虚拟语气用法 虚拟语气用法
概念
虚拟语气用来表示说话人的主观愿望或假想， 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。英语中的语气分 为陈述语气、祈使语气、虚拟语气三类。
应用条件
在表示虚假的、与事实相反的或难以实现的情况时用虚拟语气，表示主观愿望或 某种强烈情感时，也用虚拟语气。即当一个人说话时欲强调其所说的话是基于自己的 主观想法，而不是根据客观实际，就用虚拟语气。
在非真实条件状语从句中的用法
真实条件状语从句与非真实条件状语从句
条件句可分为两类，一类为真实条件句，一类为非真实条件句。非真实条件句表 示的是假设或实际可能性不大的情况，故采用虚拟语气。 例： If he doesn’t hurry up, he will miss the bus. 如果他不快点，他 将错过巴士。( 真实) If he is free, he will ask me to tell stories. 如果 他是空闲的，他会要求我讲故事。 （真实） If I were you, I would go at once. 如果我是你， 我马上就会去。（非真实， 虚拟语气） If there were no air, people would die. 如果没有空气，人就会死亡。 （非真实，虚拟语气）
用法及动词形式
从句
If+主语 +did If+ 主语+did 主语 were） （ be 动词 were ）
主句
与现在事实相反
主语+should/would/ 主语 +should/would/ could/might+do
高考英语最新虚拟语气知识点解析含答案(1) 一、选择题 1．Look at the trouble you are in！_______your parents’ advice. A．If only you would have followed B．If only you followed C．If only you would follow D．If only you had followed 2．If penicillin available, many people from sickness or even small wounds in World WarⅡ. A．was not; would die B．were not; would have died C．had not been; would died D．had not been; would have died 3．Had electronic computers not been invented, many problems of space flight . A．could not have solved B．could not be solved C．can not have been solved D．could not have been solved 4．What do you think of the proposal that improvement ____ in the type of vacuum cleaner? A．be made B．will be made C．would be made D．has to be made 5．—Oh, dear. I’m really ve ry busy now. —Would you rather that I to you about my experience at school? A．shouldn’t speak B．didn’t speak C．don’t speak D．won’t speak 6．The snowstorm sweeping across California delayed my flight, otherwise I _____ in Hawaii sunbathing on the beach now. A．would be B．could have been C．will be D．might have been 7．It is time that we ________ a decision on how to approach this problem. A．make B．made C．to make D．will make 8．I ______ to you at that time, but I didn’t know where you lived. A．had written B．wrote C．would write D．would have written 9．It is recommended that the project ______ until all the preparations have been made. A．is not started B．will not be started C．not be started D．is not to be started 10．The board thought it urgent that these files _____ right away. A．printed B．had been printed C．would been printed D．be printed 11．--- Are you happy now? --- If only I _____ slimmer, more beautiful, richer, more clever. A．am B．were C．had been D．should be 12．-You came second in the running race. Congratulations! -Thanks. But practising more, I _______ a different result. A．might get B．may get C．may have got D．might have got 13．－Where are the children? The school bus is leaving. － I wish they ______ always late. A．aren’t B．weren’t C．wouldn’t be D．hadn’t be en 14．________, the damage would be incalculable.
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。
高中英语虚拟语气的用法 一、考查虚拟语气在条件从句中的用法 时间从句谓语形式（be用were不可改变）主句谓语形式 将来一般过去时(be用were) would/should/might/could+动词原形 现在一般过去时(be用were) would/should/might/could+动词原形 过去现在完成时would/should/might/could+had done （1）If he my advice, he wouldn' t have lost his job. A. followed B. should follow C. had followed D. would follow （2）If we the other road, we might have arrived here in time for the meeting. A. taken B. had taken C. took D. have taken （3） -John went to the hospital alone. -If he me about it, I would have gone with him. A. should tell B. tells C. told D. had told 二、考查特殊句型中的虚拟语气 英语中需要使用虚拟语气的特殊句型不多，主理有以下类: 1.“倒装”类虚拟语气 当虚拟条件句中含有were, should, had时,有时可将引导虚拟条件句的连词if省略,而将从句中的were,should, had提到句首,构成倒装形式的虚拟语气。如: If he were here, she would agree too.→Were she here, she would agree too.如果她在这里,她也同意的。. If it should rain tomorrow, we should have to put off the match. →Should it rain tomorrow, we should have to put off the match.假若明天下雨,我们只好推迟这场比赛。 If we had found him earlier we could have saved his life.→Had we 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。 注意,如果条件从句的谓语为否定式,其中的否定词not应置于主语之后,而不能与were,should, had等缩略成Weren' t, Shouldn' t, Hadn'场置于句首。如:我如不是警告了你,你就可能丧命了。 正: If I hadn' t warned you, you could have been killed. 正: Had I not warned you, you could have been killed. 误: Hadn' t I warned you, you could have been killed. 另外,有时省略if后提前到句首的had可能不是助动词,而是实义动词。 如: Had I time, I would go with you.假如我有时间,我就同你们一起去。句中的had不是构成过去完成时的助动词,而是表示“有”,如果不省略if ,完整形式为:If I had time, I would go with you. (1) Had I known about this computer program, a huge amount of time and energy____. (2010浙江卷) A.would have been saved B. had been saved C. will be saved D. was saved （2） fired, your health care and other benefits will not be immediately cut off. (2006湖北） A. Would you be B. Should you be C. Could you be D. Might you be 2.“宁愿”类虚拟语气 这里说的“宁愿”主要是指would rather。当它后接句子的时候,句子的谓语通常要用虚
虚拟语气 一、考点聚焦 1、虚拟语气用于条件状语从句中 （1）表示与现在事实相反的假设，条件状语从句中的谓语动词用“过去式（be动词的过去式用were）”，而主句中的谓语动词用“would / should/ could / might + 动词原形”。如：If I were a boy, I would join the army. If the had time, she should go with you. （2）表示与过去的事实相反，条件状语从句中的谓语动词用过去完成时，主句中的谓语动词则用“would / should / might / could + have +过去分词”。如： If he had taken my advice, he would have succeeded in the competition. （3）表示与将来事实相反，条件状语从句中的谓语动词一般过去时或should(were to) + 动词原形，而主句中的谓语动词则用would / should/ could might + 动词原形。如； If it were to rain tomorrow, the football match would be put off. （4）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，动词的形式要根据它所表示的时间作相应调整。如： If they had worked hard, they would be very tired.(从句说的是过去，主句指的是现在) 以下表格是虚拟语气用于条件状语从句中时，主句和从句谓语动词的形式： 条件状语从句主句与过去事实相反had + 过去分词should /would/could/might + have + 过去分词与现在事实相反一般过去时(be用were) would/should/could/might + 动词原形 与将来事实相反一般过去时或should(were to) + 动词原形 Would/should/cold/might + 动词原形 有时候在使用时可省略if,句子则可换成下列形式，即“were / had / should +主语”。如：Were I a boy, I would join the army. Had he taken my advice, he would have succeeded. Were it not for the expense, I would go to Britain. 2、虚拟语气用于名词性从句 （1）虚拟语气在宾语从句中的运用。 ①“wish + 宾语从句”表示不能实现的愿望，译为“要是……就好了”等。表示现在不能实现的愿望，从句中的谓语动词用一般过去时；表示将来不能实现的愿望，从句中的谓语动词用“would/could + 动词原形”；表示过去不能实现的愿望，从句中的谓语动词用“had + 过去分词”或“could(should) + have + 过去分词”。如： I wish it were spring all the year round. I wish I had known the answer. I wish I could fly like a bird. ②在表示建议、要求、命令等的动词suggest、advise、propose、demand、require、insist request、command、order等后的宾语从句中，谓语动词用should + 动词原形或是动词原形。如： She suggested we (should)leave here at once. The doctor ordered she should be operated. （2）虚拟语气在同位语从句和表语从句中的运用。
高考英语中虚拟语气的用法—难点突破 对虚拟语气的测试主要涉及以下方面： 1）主语、表语、同位语、宾语从句中虚拟语气的用法 2）wish , would rather虚拟语气结构的用法 3）if 条件句中虚拟语气的用法，应特别注意省略if 的倒装结构是考试的重点 4）if only 结构中虚拟语气的用法 5）but for , or, otherwise 等含蓄条件句的用法 6）It’s time (that) 等结构中虚拟语气的用法 （一）虚拟语气在虚拟条件句中的运用 条件从句有两类，一是真实条件句，另一是虚拟条件句。如果假设的情况可能发生，是真实条件句，这种情况下谓语用陈述语气。如： If time permits, we’ll go fishing together.如果时间允许，我们就一起去钓鱼。 如果假设的情况是不存在的或不大可能发生的，则是虚拟条件句。如： If you had come yesterday, you would have met that famous professor.如果你昨天来，你就会见到那位著名的教授了。（隐含的事实是：你昨天没来，也没见到那位著名教授）。 在含有虚拟条件句的复合句中，主从句的谓语都要用虚拟语气，现将其形式列表如下：1．表示与现在事实相反的假设和结果。 If I were you, I should(would ,could, might)tell him the truth. 要是我是你，我就会告诉他真相了。（事实上我不是你） If she had time, she would(could, might)help me. 如果她有时间，她就会帮我了。（事实上她没有时间） 2. 表示与过去事实相反的假设和结果。 If you had taken my advice, you wouldn’t(couldn’t) have failed in the exam. 如果你听了我的建议，你就不会考试不及格。（事实上你根本没听我的。） 3.表示与将来事实可能相反的假设和结果
虚拟语气 有些条件句是可能实现的，称为真实条件句. 虚拟语气是动词的一种特殊形式，用来表达说话人的意愿.请求，设想，等未能或不可能实现的事实，或说话人看来实现可能性很小的情况.做这类题时首先要弄清楚虚拟语气的各种句型，即由if引导的虚拟条件句，省略if的倒装形式，可跟虚拟语气的宾语从句，同位语从句，表语从句的句型，以及表示祝愿或感叹的句子和由without， but for等介词引导的短语或句子. 主要用法 1). 主语从句，同位语从句中虚拟语气的用法. 2). 宾语从句中虚拟语气的用法，尤其是wish 虚拟语气结构的用法. 3). If条件句中虚拟语气的用法，应特别注意省略if的倒装结构是考试的重点. 4). would rather（=wish）等结构中虚拟语气的用法. 5). if only（如果。。。就好了）结构中虚拟语气的用法. 6). But， or， otherwise 等含蓄条件句的用法. 7). It’s time (that)（早该。。。。）等结构中虚拟语气的用法. 1. 虚拟语气在虚拟条件句中的运用 (1) 虚拟语气现在时，用以表示与现在/将来事实相反的假设或现在实
现可能性不大的情况. Eg. If I were a bird， I would fly to you. If it is not for their help， we shall be in a very difficult position. If it were not for their help， we should be in a very difficult position. If I had seen the film, I would….. (2) 虚拟语气过去式. 表示与过去事实完全相反的假设. Eg. If we had started earlier， we should not have missed the train. If she hadn’t been ill， she might have come. If she were not ill， she might come.
虚拟语气中的含蓄条件句常见用法先看一道高考题： ___ more attention ，the trees could have grown better ． A．Given B．To give C．Giving D ．Having given (答案是A ) 句中" ．．．the trees could have grown better" 是一个表达虚拟语气的句子。题中要求选择的是如何表达假设条件的形式。如果我们把这个句子用另一种形式"If they had been given more attentio n ，the trees could have grown better ．" 来表示，就不难理解了。很多情况下，在表示假设的虚拟语气中，有时假设的条件并不以条件从句的形式表达，而是通过上下文或句中内在的逻辑关系，或用其它形式表达出来，我们称之为" 含蓄条件句" 。含蓄条件句主要通过名词、连接词、不定式、分词、动名词短语、介词短语及分句来暗示。这些表达形式在句中实际起着虚拟条件从句的作用。现分述如下：一、介词短语常用来表示虚拟条件的介词有with ，without ，in ，under ，but for 等等，它们表示的虚拟条件都可以被if 从句替换。 ( 1 ) without ，with without 表示否定的条件，意为if ．．．not ；with 与without 意义相反，表示肯定的条件。如： Without air , there would be no living things .(without air = if there were no air)没有空气，便没有生物。 With her help (= If I had her help )，I would do the experiment well ．假如有她帮助，我就可以把这个实验做好。 ( 2 ) under Under the leadership of a less experienced person ，the experiment would have failed ．( u nder ．．．= If there had been the leadership of a less experienced person )假设在一个缺 少经验的人领导下进行实验，实验准会失败。 (3 ) in I would have lost my head in that position ．( in that position = if I had been in that po sition )我处在那种情况下，是会丧失理智的。 ( 4 ) but for
连云港育青外国语学校李老师谈英语中虚拟语气的用法 虚拟，在汉语中表示一种假设的，不存在的情况，同样，英语中虚拟语气是用来表示说话人 的主观愿望或假想，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。在初中阶段，虚拟语气一般用于下列情况： 一、条件状语从句 1、与现在事实相反 若与现在事实相反，虚拟语气的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”。如： If I were you, I would take an umbrella. 如果我是你，我会带把伞。（事实上我不可能是你） 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。 (事实上我不知道) 2、与过去事实相反 若与过去事实相反，从句：主语+had done ，主句：主语+should/would/could/might+have done，例如： 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 I had got there earlier, I should/could have met her. 如果我早到那儿，我就会见到她。（事实：去晚了） 3、与将来事实相反 从句：①if+主语+were to do 主句：①主语+should/would/could/might+do ②if+主语+did/were ②主语+should/would/could/might+do ③if+主语+should+do ③主语+should/would/could/might+do 例如：If he went，would you go too? 如果他去，你也去吗?(大概他不会去) If he should come here tomorrow, I would talk to him. 如果他明天来这儿的话，我就跟他 谈谈。（事实：来的可能性很小） 注意与说明：对于与将来事实相反的情形，请注意以下几点： 一是这里说的与将来事实相反，实为对将来情况的推测； 二是此用法中的条件从句谓语除用过去式外，有时也用“should+动词原形”（ 表示可能性极小， 表示与将来事实相反的假设)； 常译为“万一”） 或“were to+动词原形”（ 三是当条件从句使用“should+动词原形”这样的谓语时，主句谓语除可用“should (would, could, might)+动词原形”这样的虚拟语气外，也可用陈述语气或祈使语气。如： I should see him, I'll tell him. 万一我见到他，我就告诉他。 万一明天下雨，就别等我了。 If it should rain tomorrow, don’t expect me. 二、wish 后宾语从句 1、表示与现在事实相反的愿望，谓语动词用过去式。例如： I wish I had your brains. 我希望我有你那样的头脑。(事实：我根本比不上你) 2、表示与过去事实相反的愿望，谓语动词：had+done 例如： I wish I had knownthe truth of the matter. 我希望我那时就知道这件事情的真相。（事实：那时还不知道） 3、表示将来难以实现的愿望，谓语动词：should/would（情态动词）+ 动词原形 I wish I should havea chance again. 我希望我还能有一次这样的机会。（事实：很难再有 这样的机会了） 常见考法