if引导的虚拟条件句(20200509141756)
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。
if的虚拟语气的用法例句

if的虚拟语气的用法例句一、if的虚拟语气简介虚拟语气是英语中一种特殊的语法现象,常用于表示假设情况、与实际情况相反的条件或无法实现的愿望等。
if引导的条件句中,根据其所表示的条件类型和时间性质,使用不同形式的虚拟语气。
二、与现在事实相反的虚拟语气1. 假设条件:如果+动词过去式(be动词用were)例句:If I were a bird, I would fly high in the sky.2. 假设条件:如果+动词过去完成时(had + 过去分词)例句:If he had studied harder, he would have passed the exam.三、与现在事实相反但可能实现的虚拟语气1. 假设条件:如果+动词过去式(be动词用were)结果:主将从现例句:If it rained tomorrow, I would stay at home.2. 假设条件:如果+动词过去完成时(had + 过去分词)结果:主将从现完成例句:If he had invited me, I would have gone to the party.四、与过去事实相反的虚拟语气1. 假设条件:如果+主语+had + 动词过去分词结果:主语+would/could/might + have + 过去分词例句:If I had known the truth, I would have made a different decision.2. 假设条件:如果+主语+had not +过去分词形式,结果也用一般过去时态例句:If we hadn't missed the train, we would have arrived on time.五、与将来事实相反的虚拟语气1. 假设条件:如果+动词过去式(be动词用were)结果:主将从现(应该+动词原形)例句:If they were here, they would help us.2. 假设条件:如果+should/were to/might/could/would + 动词原形结果:主将从现(应该+动词原形)例句:If he should call, please ask him to wait.六、虚拟语气中常用的连词和引导短语1. if: 引导条件状语从句,表示假设情况。
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。
if虚拟语气的用法造句

if虚拟语气的用法造句一、if虚拟语气的基本用法if从句中的虚拟语气是英语中常见的一种语法现象,表示对未实现或假设情况的想象和假设。
它通常用在条件句中,表达与事实相反或不可能实现的情况。
下面将分别介绍 if虚拟语气在三种主要情况下的用法,并给出相关造句。
1. 表示与现在事实相反的情况使用if引导条件从句时,主句常使用过去时态来表示与现在事实相反的情况。
构成形式为:如果(If)+ 主语 + 过去式(动词原形),主句+would/could/should/might + 动词原形。
示例:If I were rich, I would travel around the world.如果我富有,我会周游世界。
注解:这个例子表达了一个现在事实相反的假设情况,即说话者并非富有,因此无法进行世界旅行。
2. 表示对过去情况的虚拟推测当我们谈论对过去某个具体情况进行猜测或假设时, if从句中需要使用过去完成时态来表示这种虚拟推测。
构成形式为:如果(If)+ 主语 + had + 过去分词,主句+ would/could/should/might + have + 过去分词。
示例:If she had studied harder, she would have passed the exam.如果她学习更努力,就能通过考试。
注解:在这个例子中,if从句描述了一个过去的事实:"她没有努力学习",而主句则表示对过去的虚拟结果:"她没有通过考试"。
3. 表示与将来事实相反的假设使用if引导条件从句时,若我们想表达与将来事实相反的虚拟情况,则需要结合一些特定的情态动词来表示。
构成形式为:如果(If)+ 主语 + should/were to +动词原形,主句+ would/could/should/might + 动词原形。
示例:If it should rain, we would stay at home.如果下雨了,我们会待在家里。
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。
if 虚拟语气的用法

if 虚拟语气的用法一、什么是虚拟语气虚拟语气是表示假设、愿望、建议、命令或推测的一种语法形态。
它与现实情况相反,用来表达说话者对某种未实现或不确定事件的态度。
虚拟语气通常通过动词形式的变化来表示,包括谓语动词和从句中的动词。
二、虚拟语气的几个主要用法1. 表示假设:虚拟条件句常使用“if”引导,表示与事实相反的假设情况。
例如:“如果我会飞,我就飞去世界各地旅行。
”在这个句子中,“我会飞”是不可能实现的,所以使用了虚拟语气。
2. 表示愿望:我们可以使用虚拟语气来表达自己的愿望或期望。
例如:“我希望你能尽快好起来。
”在这个句子中,“能尽快好起来”表达了说话者对对方康复的希望。
3. 表示建议:通过使用虚拟语气,我们可以提出建议或建议他人采取某种行动。
例如:“如果你有空闲时间,你可以考虑参加英语培训班。
”在这个句子中,使用虚拟语气表达了对他人的建议。
4. 表示命令:某些情况下,我们可以使用虚拟语气来表示命令或要求。
例如:“我要你马上离开这里!”在这个句子中,“马上离开”是一个虚拟情况,用于强调说话者的命令或要求。
5. 表示推测:有时候,我们无法确定某种情况是否为真实情况,可以使用虚拟语气来表示猜测或推测。
例如:“他似乎生病了,也许应该去看医生。
”在这个句子中,“也许应该去看医生”表示推测或猜测未来可能发生的情况。
三、虚拟语气的注意事项1. 在形式上,谓语动词常为过去式(一般过去时、过去完成时)或动词原形(以下划线标记)。
2. 虚拟语气常与“if”引导的条件句搭配使用。
3. 可以使用连词“as if”和“as though”引导表达假设的从句。
四、几个常见的虚拟语气形式1. “If I were +名词”,用来表达现在或将来虚拟的情况。
例如:“If I were a bird,I would fly away.” (如果我是一只鸟,我会飞走。
)2. “If I had +过去分词”,用来表达对过去事实的虚拟假设。
if条件句虚拟语气

有关英语if条件句虚拟语气用法
if的虚拟语气用法:
1、现在时:当if引导的虚拟语气表示与现在事实相反时,主句谓语用could、would、shoul d或mi ght加动词原形,条件从句中的谓语用过去式。
2、过去时:当if引导的虚拟语气表示与过去事实相反时,主句谓语用could、would、shoul d或mi ght加have再加动词原形,
3、将来时:当if引导的虚拟语气表示与将来事实相反时,主句谓语用could、would、shoul d或mi ght加动词原形,条件从句中的谓语用过去式。
虚拟语气中,表条件的状语从句的if可以省略,但主语必须与动词易位(也就是倒装):
If it were not for his illness, he could do better.
=Were it not for his illness, he could do better.
如果不是因为他生病,他可以做得更好。
If he had money, he would buy that villa.
= Had he money, he would buy that villa.
对将来情况的虚拟:
主句:主语+would/should/might/could+动词原形从句:should+动词原形/were to+动词原形。
对现在情况的虚拟:
主句:主语+would/should/might/could+动词原形从句:动词过去式
对过去情况的虚拟:
主句:主语+would/should/might/could have+动词过去分词从句:had+动词过去分词。
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Subjunctive MoodⅠ. Listen to the songs and fill in the blanksNumber one:If _______________, _____________so highThat the only people near meWould be the pilots in the sky.And If _______________, _______ so gracefullyThrough the air so all mankind could see.If _______________Number two:If ______________I'd never hear your voice again,___________each thing you ever saidAnd on those lonely nightsI could think of them once moreAnd keep your words alive inside my headIf _______________I'd never hear your voice againNumber three:If I ______________, I _______________ in your waySo I'll go, but I knowI'll think of you every step of the wayAnd I will always love youI will always love youNumber four:yeah if ___________,then money, fame and fortune never _____________If ____________, _____________a party( it'd be ecstasy(狂喜))yeah if __________you y-y-y-y do y-y-y-y-y do y-y-y-y-y doIf _____________that would be the only thing I'd ever needSubjunctive mood is used to talk about situations that are ______ true or _____ likely to become true.Ⅱ Observe the following sentences and put them into throw groups1.If it were Sunday tomorrow, I would go and see my friends.2. If she hadn't called me, I could have overslept(睡过头) this morning.3. If he were you, I might go and try.4. If I had time right now, I should certainly help you.5. If I had known your telephone number yesterday, I would have telephoned you.6. If it should rain in the near future, the crops could be saved.7. If he were here tomorrow, I should speak to him.8. If we had no air and water, we wouldn't survive.9. If it snowed tomorrow, I might stay at home.10. If you were to be a millionaire soon, what would you do with your money?Contrary to the present:__________________Contrary to the past:_____________________Contrary to the future:___________________Ⅲ Structures of subjunctive mood1.虚拟条件从句主句与现在事实相反的假设If+S+________________ S+_____________________ 与过去事实相反的假设If+S+ ________________ S+_____________________与将来事实相反的假设_______________If+ S+ ______________________________S+_____________________2. If 的省略:________________________________________________3. 错综条件句:______________________________________________ 1)If you had followed my advice the other day, you would feel better now.2) If it had rained last night, the ground would be wet for the presentⅣ Exercises1) Multiple Choices1)If it ________ rain, we ________ get wet.A is to, shouldB were to, wouldC were going to, wouldD was going to, should2)If he ________ you, he wouldn’t return the call.A beB amC wasD were3)If I ________ with my own eyes, I wouldn't have believed it.A didn't seeB weren't seeingC wouldn't seeD hadn't seen4)If we ________ here ten minutes earlier, we________ the bus.A arrived/would catchB arrived/would have caughtC had arrived/had caughtD had arrived/would have caught5) ________ to the doctor right away, he might have been alive.A. If he went B Were he gone C Should he have gone D Had he gone6) ________ the clouds, you would find the plane easily in the sky.A. Had it not been forB. If it were notC. If it had not been forD. Were it not for7) If he ________ to the teacher carefully, he ________ the answer to the problem now.A had listened, would have knownB listened, would knowC listened, would have knownD had listened, would know2) Fill in the blanks1) If they __________(obey) the traffic rules, the car accidents ___________________________(not happen)._____________________________________________________________________2) If I ___________(catch) the rabbit yesterday, I ____________________________(enjoy) a big meal now._____________________________________________________________________3) If I _____________________(sell) one box of matches, I _____________________________(go) home.____________________________________________________________________4) Rose, if I ______________(not win) the ticket, I ___________________________________(not be) on board. If I____________(not be) on board, I ______________________________(not meet) you.____________________________________________________________________5) Tom: Jack, you look so upset. What's the matter?Jack: Jane refused to marry me. If she____________(accept) me yesterday, I______________(be) the happiest man.Tom: Cheer up, Peter. If I __________(be) you, I_____________________(send) her another bunch of roses right now.Jack: Oh, yes! That's a good idea.Tom: May you succeed.________________________________________________________________________________________________________________________________________6) If I________________(pluck) the crops, they ______________ (grow) faster._____________________________________________________________________7)If Jim ____________(be) one of them, he ________________(not allow) him to jump the queue._____________________________________________________________________。