if条件句的虚拟语气与倒装句
【if从句后面接的过去时态】 if引导从句的三种时态
【if从句后面接的过去时态】if引导从句的三种时态if从句是我们在学习英语时经常碰见的一种句型，那么你知道if从句后面的过去时态是怎么回事吗?下面是小编为你整理的if从句的相关资料，希望大家喜欢!if从句的过去时态不是跟的过去时态，是虚拟语气If I were you ,I'll take it.如果我是你我就买了。
这里的were并不是说我以前就是你，这里表示的一种假设，一种不存在的情况.if后面可以接的时态1.if引导的条件状语从句中用一般现在时态。
引导条件状语从句，用一般现在时代替将来时。
这个是学过的最简单的。
If it doesn't rain tomorrow, we will go picnic.如果明天不下雨，我们去野炊吧。
2.if后可以接虚拟语气。
(1)第一种是与现在事实相反，if从句谓语用过去式或者were。
If I were you, I would go there alone.如果我是你，我会一个人去那里。
(与现在事实相反，可惜现在我不是你啊。
)(2)第二种是与过去事情相反，if从句谓语用过去完成时：had+过去分词。
If he had studied hard, he would have passed the exam.如果他过去努力学习，他现在就已经通过考试了。
(3)第三种是与将来事实相反，if从句谓语用动词过去式，should +动词原形，或were to + 动词原形。
If I should do/were to do/did it, I would do it in a different way.如果我做这个，我将会用另一种方法来做。
if条件句的时态if有两大用法，一个是译为一般的如果，一个是用作假设的如果在if 引导的条件状语从句中，如果从句谈论的是一个推测将来有可能发生的事实，主句用一般将来时态，从句用一般现在时态。
一般译为如果，如：if it rains tomorrow,i won't go out.如果if 条件句谈论的是一个主观的意愿，则主句,从句大多用一般现在时态。
高考英语虚拟语气历年考点分析
高考英语虚拟语气历年考点分析情态动词和虚拟语气历年典型题训练虚拟语气在高考中考的频率不高，主要考查以下5个方面:考点一、含有if引导的状语从句的虚拟语气考点二、虚拟语气省略if的倒装情况考点三、名词性从句中的虚拟语气考点四、混合虚拟条件句（错综虚拟条件句）考点五、含蓄条件句考点精讲考点一、含有if引导的状语从句的虚拟语气（1）若与现在事实相反从句形式为：If+主语+动词过去式（be动词一般为were）主句形式为：主语+would/should/could/might +v.If he came here, he would/should/could/might help me.（2）若与过去事实相反从句形式为：If+主语+had+ done主句形式为：主语+would/should/could/might+ have+doneIf you had come here yesterday, you would/should/could/might have seen the expert.3）若与将来事实相反从句形式为：If+ 主语+ 动词过去式should + v.were to + v.主句形式为：主语+would/should/could/might + v.If he met me, he would/should/could/might be very happy.If you should come here, you would/should/could/might meet many classmates.If we were to do that, we would/should/could/might make good preparation.高考真题1：It is hard for me to imagine what I would be doing today if I _____ in love at the age of seven, with the Melinda Cox Library in my hometown.(2002上海)A．wouldn’t have fallen B. had not fallen C. should fall D. were to fall考点二、虚拟语气省略if的倒装情况注意：在if引导的虚拟条件句中，若有动词were, should或had，有时可以省略连词if，而把这三个词放在主语之前，变成倒装句。
if虚拟语气的用法归纳
if虚拟语气的用法归纳IF虚拟语气是英语中的一种重要语法现象，主要用于表示与现实相反的假设、愿望、建议等。
它分为两种形式：if条件句和if非条件句。
以下是对IF虚拟语气用法的详细介绍：一、if条件句1. 表示与现在事实相反的假设：If + 主语+ 过去时态，主语+ would/could/might/should + 动词原形。
例如：If I were you, I would go to the party.（如果我处在你的位置，我会去参加派对。
）2. 表示与过去事实相反的假设：If + 主语+ had done，主语+ would/could/might/should + have done。
例如：If he had come to the meeting, he would have known the plan.（如果他参加了会议，他就会知道这个计划。
）二、if非条件句1. 表示建议、劝告：主语+ should/would/might/ought to + 动词原形。
例如：You should go to the party.（你应该去参加派对。
）2. 表示愿望：主语+ could/would/might + 动词原形。
例如：I wish I were a bird.（我希望我是一只鸟。
）3. 表示假设：If + 主语+ 动词过去式，主语+ would/could/might + 动词原形。
例如：If I had time, I would go to the park.（如果我有时间，我会去公园。
）三、if虚拟语气的特殊结构1. 省略if，将were、had、should等词置于主语之前：主语+ were/had/should + 动词原形。
例如：She were here, she would meet him.（如果她在这里，她会见到他。
）2. 使用倒装结构：were/had/should + 主语+ 动词原形。
虚拟语气15种句型
(the past)
1 If someone had given you a valuable painting as a present, what would you have done with it? 2 If you had become the head of the United Nations, what would you have done first? 3 If you had travelled anywhere in the world,where would you have gone and what would you have done?
Subjunctive Mood
1.虚拟条件句
含义 动词形式 If 从 句 现在 did/were
主句
would/should/ did/were could/might+ 将来 were to+do do 与事实 should+do 相反 would/should/ 过去 had+done could/might+ have done
1. 表示命令/建议/要求的词所带的从句 记住以下动词以及他们的名词。 建议：suggest / recommand / advise / propose 要求：require / request / demand / ask / desire 命令：order / command/ 坚持：insist 不过是动词还是名词，不过是主动还是被动 ，后面带的不管是主语从句， 宾语从句， 表语从句还是同位语从句， 都要用should do
ห้องสมุดไป่ตู้
5
(the future)
1 If someone gave you a valuable painting as a present, what would you do with it? 2 If you were to become the head of the United Nations, what would you do first? 3 If you should travel anywhere in the world,where would you go and what would you do?
if引导的虚拟条件句
if引导的虚拟条件句1、虚拟语气If引导的真实条件句(16)：1.主将从现Ifsheshowsup,we’llstickwithher.I’llgiveyouacallifanything comesup.语法深化I’llkickyououtifdon’tlistentome.2.主祈从现Catchmeifyoucan.Lovemeifyoudare.Ifhecomes,heisgoingtobringh isviolin.虚拟语气If引导的虚拟条件句：1.与如今事实相反的假设条件从句主句一般过去时should(wouldcould)+动词原形语法深化假如我是你，我不会让他走。
=If2、Iwereyou,Iwouldnotlethimgo.假如我能飞，你就抓不到我。
=IfIcouldfly,youwouldnotcatchme.虚拟语气If引导的虚拟条件句：2.与将来事实相反的假设条件从句主句一般过去时should(wouldcould)+动词原形动词原型语法深化Wereto+Should+动词原型Ifyoushouldsucceed,everythingwouldbeallright.Ifyouweretosuc ceed,everythingwouldbeallright.虚拟语气If引导的虚拟条件句：3.与过去事实相反的假设条件从句3、主句Haddonewould,should,could+havedone语法深化Ifhehadcomeyesterday,Ishould/wouldhavetoldhimaboutit.Ifheha dnotbeenillandmissedmanyclasses,hewouldhavemadegreaterprogr ess.虚拟语气If引导的虚拟条件句：4.混合虚拟语气Ifyou_______himyesterday,you______whattodonow.(ask,know)语法深化〔从句与过去事实相反，主句与如今事实相反。
if 条件句虚拟语气
if 条件句虚拟语气虚拟语气是英语语法中的一种特殊语气，用来表示与事实相反或假设的情况。
在if条件句中，虚拟语气通常用来表达非真实的、假设的情况。
本文将列举10个以if条件句虚拟语气为主题的例子，并对其进行详细解释。
1. If I were rich, I would travel around the world.如果我很富有，我会环游世界。
解释：这个句子中的虚拟语气表达了对现实情况的假设，暗示说我并不富有，因此无法实现环游世界的愿望。
2. If I had studied harder, I would have passed the exam.如果我学得更努力，我就能通过考试了。
解释：这个句子中的虚拟语气表示对过去情况的假设，暗示说我没有努力学习，所以没有通过考试。
3. If I had a time machine, I would go back to the past and change some things.如果我有一台时间机器，我会回到过去改变一些事情。
解释：这个句子中的虚拟语气表达了对现实情况的假设，暗示说我没有时间机器，因此无法改变过去的事情。
4. If I were the president, I would make education free for all.如果我是总统，我会让教育对所有人免费。
解释：这个句子中的虚拟语气表达了对现实情况的假设，暗示说我并不是总统，所以无法实现让教育免费的目标。
5. If it didn't rain tomorrow, we could go hiking.如果明天不下雨，我们可以去远足。
解释：这个句子中的虚拟语气表达了对未来情况的假设，暗示说明天可能会下雨，所以无法去远足。
6. If I had known you were coming, I would have prepared a meal for you.如果我知道你要来，我会为你准备一顿饭。
英语虚拟与倒装用法
虚拟句用法．．．．．虚拟语气是通过特殊的谓语动词形式来表达的愿望、假设、怀疑、猜测或建议等语气，它不表示客观存在。
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(b e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 + 动词原形有时侯在使用时可省略if，句子则可换成下列形式，即“were / had / should +主语”。
if引导的条件句中的虚拟语气
if引导的条件句中的虚拟语气虚拟语气表示一种不能实现的假设。
该语法主要用于if条件状语从句。
一、if引导的条件状语从句的分类及虚拟条件句的判断1、可以把条件句分为两类：1).真实条件句（Sentences of Real Condition）：凡是假设的情况发生性可能很大，就是真实条件句。
例如：⑴、If I have tim e , I will help you with this work.如果我有时间会帮助你做此工作的。
(2)、If time permits, we'll go fishing together.(如果有时间的话，我们就一起去钓鱼。
）2).虚拟条件句（Sentences of Unreal Condition）：当假设是不大可能实现时，就是虚拟条件句。
例如：⑴、If I were you , I w ould have attended the meeting. 如果我是你的话，就去参加会议了。
⑵、If he had come here yesterday, he would have seen his old friend.假如他昨天来这儿的话，就会看见他的老朋友。
⑴、If it had rained yesterday, we would have stayed at home.（如果昨天下雨的话，我们就会留在家里。
）2、.if条件状语从句中虚拟语气的判断判断是真实条件句还是非真实条件句。
只有在非真实条件句中才使用虚拟语气。
通过句子意思，看假设的条件是否能够实现，能够实现是真实条件句，不能使用虚拟语气；假设的条件不能实现则是非真实条件句，要用虚拟语气。
判断这个假设是与哪个事实相反。
通常有三种情况：①与过去事实相反。
②与现在事实相反。
③与将来事实可能相反。
3、“后退一步法”后退一步法是指在准确地判断了该句与哪一事实相反后，按虚拟语气的后退一步法处理从句谓语动词的时态。
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虚拟语气与倒装句(教师版)
什么就是虚拟语气(subjunctive mood)?
If I were you, I would not do like this、要我就是您,我就不会这样做
I wish I became a millionaire、要就是我就是个百万富翁多好啊
口头解释上面两个例句后引出虚拟语气的概念
表示说的话不就是真实发生,只就是一种假设,主观愿望,猜测,建议等非真实的情况。
今天主要讲在条件句中虚拟语气的使用情况
Q: 那就是不就是所有的条件句都用虚拟语气？这里可以提问同学,进行互动后给出正确答案
一.分类
1、真实条件句,表示的假设就是有可能发生的,此时主句不用虚拟语气。
e、g、If I have time, I will do the homework、(口头解释分析这个句子)
2、虚拟条件句,表示的就是一种假象,与事实相反或不太可能会发生,那就要用虚拟语气
e、g、If I were you, I would do the homework、(口头解释分析这个句子)
二.用法
时态类型主句从句例句
与现在事实相反主语+would/should/could/
might+ do
If+主语+did
(be动词用were)
1.If I were you, I should work hard、
2.The bedroom would be so
clean if I had time、
与过去事实相反主语+would/should/could/
might + have done
If+主语+had
done
1.If I had finished my homework,
I would have passed that test、
2、If I had left a little earlier, I would
have caught the train、
与将来事实相反主语+would/should/could/
might + do
①If+主语+did
(可能性一般)
1、If you came tomorrow, we would h
ave the meeting、①
②if+主语+shou ld +do(可能性最大)
③If+主语+were to + do(可能性最小) 2、If it were to rain tomorrow, the m eeting would be put off、③
总结:从句都往过去推一个时态。
与现在相反--过去, 与过去相反--过去的过去(过去完成),与将来相反--过去
三.重点解析
1、l would/should/could/might主句谓语中的should主要用于第一人称后;would
表示结果还表示过去常常做某事,might表示可能性,could表示能力、允许或可能性。
比较: ①If you tried again,you would succeed、
要就是您再试一试,您就会成功的。
(would表结果)
②If you tried again, you might succeed、
要就是您再试一试,您可能会成功的。
(might表可能)
③If you tried again ,you could succeed、
要就是您再试一试,您就能成功了。
(could表能力)
2.错综时间虚拟条件句:即条件从句与主句所指时间不一致,如从句指过去,而主句即指的就
是现在或将来,此时应根据具体的语境情况,结合上面提到的三种基本类型对时态作相应的调
整
If it had rained last night, the ground would be wet now、
要就是昨晚下过雨的话,现在地面就会就是湿的。
If he were free today, we would sent him to Beijing、
如果她今天有空的话,我们就已经派她去北京。
3.If虚拟条件句的倒装形式:即把were, had, should置于句首,if可省略;。
e、g、Were I in school again (= If I were in school again), I would work harder、
如果我能再上一次学,我会学习得更努力。
Had you asked me, I would have told you、(=If you had asked me,…)
如果您问我,我会告诉您。
四.巩固检测
1.If I were you, I would take an umbrella (如果我就是您,我会带把伞)
2.If I had gotten there earlier, I should/could met her、(如果我早点到,我就会见到她)
3.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)
4.If it should snow tomorrow ,I would make a snowman 、把这个句子改成if条件句虚拟语气倒装句
Should it snow tomorrow,I would make a snowman、。