虚拟语气在if条件句中的用法

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虚拟语气在条件状语从句中的用法(if条件句)

虚拟语气在条件状语从句中的用法(if条件句)

在写作中的应用
创作文学作品中
在创作小说、诗歌等文学作品时, 虚拟语气可以用来表达虚构的情 节和角色情感,增强作品的情感
色彩和艺术效果。
撰写学术论文
在撰写学术论文时,使用虚拟语 气可以表达假设的情景或条件, 例如在讨论不同政策或方案的影
响时。
写邮件和信件
在写邮件或信件时,使用虚拟语 气可以表达礼貌和尊重,例如在
在撰写商务广告和宣传材料时,使用虚拟语气可以增强语 言的感染力和说服力,例如“假如您正在寻找更好的产品 ,那么您来对了地方。”
感谢您的观看
THANKS
if条件句中的虚拟语气与时间状语从句的时态不一致
总结词
当if条件句中的虚拟语气与时间状语从句的时态不一致 时,通常是为了强调或表达与时间状语从句相反的情 况。
详细描述
在英语语法中,当if条件句中的虚拟语气与时间状语从 句的时态不一致时,通常是为了强调或表达与时间状语 从句相反的情况。这种用法能够使句子更加生动和富有 表现力,突出说话者对某个特定时间点的态度或情感。 例如,在句子"If I had known the answer yesterday, I would have told you."中,虚拟语气"had known" 与时间状语从句的时态"yesterday"不一致,强调了说 话者对过去的遗憾或后悔。
虚拟语气在条件状语从 句中的用法(if条件句)
目录
CONTENTS
• 虚拟语气在条件状语从句中的基本结构 • 虚拟语气在条件状语从句中的用法 • 虚拟语气在条件状语从句中的特殊情况 • 虚拟语气在条件状语从句中的实际应用
01 虚拟语气在条件状语从句 中的基本结构

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条件句中虚拟语气的用法

if条件句中虚拟语气的用法

if条件句中虚拟语气的用法1、If条件句中虚拟语气的用法,主讲人:高争利,虚拟语气在虚拟条件句中的运用1.虚拟语气如今时2.虚拟语气过去时3.虚拟语气将来时,1.虚拟语气如今时用以表示与如今事实相反的假设或如今实现可能性不大的状况,1)Example:-Mom,ifIwereyou,Iwouldn’taskmysontostudyatwee kends.-Unfortunately,youarenot.,2〕structure:,条件从句主句动词过去式(be多用were)would/could/should/might+动词原形3〕eg:IfIwereabird,Iwouldflytoyou.IfIwonthelottery,Iwo2、uldtravelaroundtheworld.,虚拟语气如今时练习题,假如我有足够的钱,我就会出国。

IfIhadenoughmoney,Iwouldgoabroad.假如我处于你的位置,我就接受他们的提议。

IfIwereinyourposition,Iwouldaccepttheiroffer.,2.虚拟语气过去时,与过去事实完全相反的假设1〕Example:IfIhadn’tcometoworkinXinjiang,Iwouldn’thavemetyou ,andIwouldneverhaveknownyou.ButIdid.,2)structure:,条件从句主句had+过去分词would/cou3、ld/should/might+have+过去分词,3)Eg:Ifwehadstartedearlier,weshouldnothavemissedthetrain.假如我们早点出发,我们本不该错过这趟火车。

,Ifshehadn’tbeenill,shemighthaveco me.假如她没生病,她就会来。

,虚拟语气过去时练习题,假如我知道你的地址,我早就给你写信了.IfIhadknownyouraddress,Iwouldhavewrittentoyou.假如你听从我的建议,你就不会考试不及格了.Ifyouhadtakenmyadvice,youwouldnthavefailedintheexamin 4、ation.,3.虚拟语气将来时,表示与将来情形相反的假设或极少有可能实现的状况Structure:条件从句动词过去式/should+动词原形/wereto+动词原形主句Would/could/should/might+动词原形,Eg:Ifyouweretogetafullmarknexttime,shouldgetIwouldholdap artyforyou.,got,虚拟语气将来时练习题,假如太阳从西边升起,我就听你的。

if 条件句虚拟语气

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引导虚拟语气的用法

if引导虚拟语气的用法

if引导虚拟语气的用法1、表示与现在事实相反的情况:从句:If主语+过去时(Be动词用were)主句:主语+XXXdoeg:1.If I were you,I would take an XXX.如果我是你,我会带把伞。

(事实:我不可能是你)2.If I knew his telephone number,I would tell you.如果我知道他的电话号码,我就会告诉你。

(事实:不知道)3.If there were no air or water,there would be no living things on the earth.如果没有水和空气,地球上就不会有生物。

(事实:地球上既有空气也有水)4.If I had any money with me,I could lend you some.假如我带钱了,我就会借给你些。

(事实:没有带钱)5.If he XXX,he might pass the exam.如果他再努力些,就能通过考试了。

(事实:没有努力)6.she looked at me as if I had been a stranger.她看我的样子好像我是一个陌生人。

(事实:我并非陌生人)2、表示与过去事实相反的情况从句:If主语+had+done主句:主语+should/would/could/might+have doneeg:1.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)2.If he had XXX my advice,he would not have made such a XXX.如果他听我的劝告的话,就不会犯这样的错误了。

事实:没有听我的话)3、透露表现对未来情形的客观推测主句:主语+should+do从句:①if+主语+were to do②if+主语+should/would/could/might+do③if+主语+did(动词过去式)/wereeg:1.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。

if虚拟语气

if虚拟语气

If虚拟语气一、虚拟语气在条件句中的用法If引导出的条件句中使用虚拟语气时,表示所说的话是非真实的,是一种假设。

通常有三种情况,与现在事实相反;与过去的事实相反;与将来的事实相反。

1[/B]、[/B]if从句表示与想在的事实相反的假设时,从句的谓语动词用一般过去时([/B] be一般用[/B]were),主句用[/B]would/should/could/might+[/B]动词原形[/B][/B] If we had enough money, we would buy a computerIf I were you,I would take her advice.If places were a like,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。

Our life would be better if there were no examination.2[/B]、[/B]if[/B]从句表示与过去事实相反的假设时,从句的谓语动词用过去完成时,主语用[/B]would/should/could/might+have+[/B]过去分词[/B][/B]If I had worked harder at school,I would have got a better job.If he had know your address yesterday,he would have telephoned you.We might have arrived here eariler if we had taken a taxi.If it had not been for you help, I would have failed again.3[/B]、[/B]If[/B]从句表示与将来事实可能相反的假设时,从句的谓语动词用一般过去时,[/B]were to do[/B]或[/B]should+[/B]动词原形,主句用[/B]would/should/could/ might+[/B]动词原形[/B][/B]If it rained tomorrow,we would put off the sports meet.If he were to leave today,he would get there by Friday.If she should fail again,we would not blame her.【注】(1)有时从句假设过去,而主句假设现在,这时从句用过去完成时,而主句用would/sh ould/could/might+动词原形。

if虚拟语气的用法造句

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

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。

虚拟语气if的用法

虚拟语气if的用法

虚拟语气if的用法虚拟语气是英语中一个重要的语法现象,通过使用if引导的虚拟条件句来表达假设、愿望、建议或者表示与现实相反的情况。

以下是虚拟语气if的几种常见用法:1. 表达假设和假设的结果:使用虚拟语气if来表达假设和假设的结果,通常形如“If + 主语+ 动词过去式,主语 + would/could/might/could have + 动词过去分词”。

例句1: If I were rich, I would travel around the world.(假如我很有钱,我会环游世界。

)例句2: If it had rained, we could have stayed at home.(如果下雨的话,我们本来可以待在家里。

)2. 表达愿望:使用虚拟语气if来表达愿望,通常形如“If only + 主语 + 动词过去式”。

例句:If only I could speak fluent French.(要是我能流利地说法语就好了。

)3. 表达建议:使用虚拟语气if来表达建议,通常形如“If I were you, I would + 动词原形”。

例句:If I were you, I would take a break and relax.(如果我是你,我会休息放松一下。

)4. 表达对现在和过去不可能实现的条件:使用虚拟语气if来表达对现在和过去不可能实现的条件,通常形如“If + 主语 + had/could + 动词原形”。

例句1: If I had wings, I could fly in the sky.(如果我有翅膀,我就能在天空中飞翔。

)例句2: If I could play the piano, I would perform at the concert.(如果我会弹钢琴,我将会在音乐会上表演。

)总结起来,虚拟语气if的用法包括表达假设和假设的结果、愿望、建议以及对现在和过去不可能实现的条件。

if 的虚拟语气的用法

if 的虚拟语气的用法

if 的虚拟语气的用法在英语中,虚拟语气是一种表达假设、愿望、建议等非现实情况的语法结构。

其中,if 引导的虚拟条件句是最常见和重要的虚拟语气形式之一。

if 从句中使用了虚拟语气,而主句则会采用一个相应的情态动词来表示可能性、不可能性或者必然性。

本文将详细介绍 if 的虚拟语气用法,并以具体案例进行说明。

一、表示现在或未来的条件1. 表示对现在事实的怀疑:如果 if 引导的条件从句与现实相反,则主句常使用与过去时间相关的情态动词(could, would, might),尽管从句所描述的情况是目前存在或未来发生的。

例子:If I were rich, I would travel around the world. (I'm not rich now, and maybe I won't be in the future, but this is just a hypothetical situation.)2. 表示对将来事件的假设:如果 if 引导条件从句描述某种假设,主句通常会采用与未来相关的情态动词(will, shall)。

例子:If it rains tomorrow, we will stay at home. (We don't know if it will rain tomorrow or not, so this is just a hypothetical situation.)二、表示过去的条件1. 表示对过去情况的虚拟:如果 if 引导条件从句描述了过去某个时间的事实情况,但与事实相反,那么主句通常会使用与过去相关的情态动词(could have, would have, might have)。

例子:If she had studied harder, she could have passed the exam. (She didn't study hard enough, so she failed the exam. This is a hypothetical situation that didn't happen in reality.)2. 表示无法改变的过去情况:如果 if 引导条件从句表达了对以往事件的遗憾、怀念或不同寻常反事实假设,主句通常会使用与过去相关的情态动词(could/would/should/might + 过去完成时)。

if条件句虚拟语气

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。

英语语法虚拟语气用法(if)

英语语法虚拟语气用法(if)

虚拟语气虚拟语气用来表达说话人的愿望、请求、建议、假想等不能实现的情况。

1.虚拟语气用于条件句(1)if条件句与现在相反:If I had had a car, I would drive it to Beijing by myself.与将来相反:If I were to do it, I should do it at once.(2)省略if的条件句如果虚拟条件句中含有were\had\should时,if可以省略,这时从句要用倒装语序,把were\had\should移到主语前面。

如Had I known it, I wouldn’t had made such a silly mistake.注意:如果if引导的条件句谓语动词是否定形式,省略if,否定词not 不提前如:Were it not for rain, I would go shopping now.(3)含蓄条件句有是虚拟条件句不一定要用if条件句的形式表达,而是借助介词、介词短语等,常见形式有:without\thanks to\but for\or\otherwise等。

如:But for your help,I could not get home.2.虚拟语气用于名词性从句(1)主语从句It is important\require...+主语从句在这里表示建议,必要,命令等意思的结构中,要用should +动词原形,should可以省略。

这类形容词和分词有:advised\advisable\better\desired\demand\imperative\important\natural\neces sary\ordered\proposed\possible\required\recommended\suggested\urgent\str ange等。

如: It is important (that)we (should) finish the work.(2)宾语从句A: suggest,require,order...+宾语从句在一些表示建议、愿望、要求、请求、劝告、意志、欲望、命令、安排、决定等动词引导的宾语从句中,要用虚拟语气。

if引导虚拟语气的用法

if引导虚拟语气的用法

1、表示与现在事实相反的情况:从句:If 主语+过去时(Be动词用were)主句:主语+should/would/could/might+doeg:1.If I were you,I would take an umbrella.如果我是你,我会带把伞。

(事实:我不可能是你)2.If I knew his telephone number,I would tell you.如果我知道他的电话号码,我就会告诉你。

(事实:不知道)3.If there were no air or water,there would be no living things on the earth.如果没有水和空气,地球上就不会有生物。

(事实:地球上既有空气也有水)4.If I had any money with me,I could lend you some.如果我带钱了,我就会借给你些。

(事实:没有带钱)5.If he studied harder,he might pass the exam.如果他再努力些,就能通过考试了。

(事实:没有努力)6.she looked at me as if I had been a stranger.她看我的样子好像我是一个陌生人。

(事实:我并非陌生人)2、表示与过去事实相反的情况从句:If 主语+had+done主句:主语+should/would/could/might+have doneeg:1. 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)2.If he had taken my advice,he would not have made such a mistake. 如果他听我的劝告的话,就不会犯这样的错误了。

(事实:没有听我的话)3、表示对将来情况的主观推测主句:主语+should+do从句:①if+主语+were to do②if+主语+should/would/could/might+do③if+主语+did(动词过去式)/wereeg:1.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。

if的虚拟语气的用法

if的虚拟语气的用法

if的虚拟语气的用法一、引言在英语语法中,if的虚拟语气是一种常见且重要的语法结构。

它用于表达假设、推测和愿望等非现实情况下的条件句。

掌握好if的虚拟语气的用法不仅可以使我们更加流利地表达自己的观点,还能帮助我们理解他人所说的话。

本文将详细介绍if的虚拟语气的用法,以便读者能够准确理解并运用其中。

二、假设条件当我们谈论一个假设或非事实条件时,就需要使用if从句来表达虚拟语气。

以下是一个例子:如果我有更多时间,我会去旅行。

这个句子中,“如果我有更多时间”表示一个假设条件,后面的“我会去旅行”则表示与此条件相对应的结果。

在这种情况下,if从句使用过去式动词来表示与现实不符合或非真实事件。

主句则使用would来表达结果。

需要注意的是,在utilize基本形态时,要确保主从句之间时态一致,并且使用were代替was以避免错误。

三、现在事实与过去事实除了表示假设条件外,if还可用于表示对现在和过去事实的虚拟语气。

以下是一些例子:1. If I were rich, I would buy a big house.2. If she had studied harder, she would have passed the exam.在第一个例句中,使用了if的虚拟语气来表达与现实相反的情况:我不是富有。

第二个例句则表示对过去事件的虚拟语气:她没有通过考试。

需要注意的是,过去时态与过去完成时用于if从句中。

主从句之间时态要求一致,并使用would或could等情态动词来表示结果。

四、祝愿和建议if的虚拟语气也可用于表达祝愿和建议。

以下例子将说明其用法:1. If I were you, I would apologize to her.2. If only he could speak another language, he would have more job opportunities.在这里,第一个例子中的虚拟条件“如果我是你”,强调了说话人想给对方的建议;第二个例子中,则表达了希望他能够掌握更多语言以获得更多就业机会。

if条件状语从句中虚拟语气

if条件状语从句中虚拟语气

if条件状语从句中的虚拟语气一、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;1. “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;即:在非真实条件状语从句中,谓语动词按正常情况“后退一步”;也就是:①与过去事实相反,在从句中用过去完成时形式表示;②与现在事实相反,在从句中用过去一般时形式表示;③与将来事实可能相反,在从句中用过去将来时形式表示;主句中则用情态动词would,should, could 等加一个与从句一致的动词形式;例:⑴、If I had come her yesterday, I would have seen him.⑵、If I were a teacher, I would be strict with my students.⑶、If it should snow tomorrow, they couldn't go out.2、注意事项:①if条件句中如有were, should, had,可以省去if,并使用倒装语序;②在现代英语中if条件状与从句中的谓语动词如果是be其过去形式一般用were;二、虚拟语气在if 引导的条件句中的用法:1. If it weren’t for your help, we would get into trouble. 如果没有你们的帮助,我们就会陷入困境;而事实上得到了你们的帮助the weather were fine, I would go there. 如果天气好,我去那儿;事实天气不好I were you, I would read it again. 如果我是你的话,我再读一遍;事实上我不是你time permitted, I would write it again. 如果时间允许的话,我再写一遍;事实上时间不允许it weren’t snowing, we wouldn’t stay in the house. 要是现在不下雪的话,我们就不会待在屋里;事实上现在下雪would I do if I were in your place要是我处于你地位我会怎么办事实上我不在你的位置上he hurried, he could catch the first bus. 他要是快点能够赶上头班公共汽车;可是他不着急8. If I were you, I should buy it. 从句用过去式动词were,主句用动词原形buy9. If I had time, I would study French. 如果有时间,我会学习法文;从句用过去式动词had,主句用动词原形study10. If she knew English, she would not ask me for help. 如果她懂英文,她就不必要我帮了;从句用过去式动词knew, 主句用动词原形ask 注意:如果动作在进行中,主句要用:"主语+ would be + 进行式动词+ ……" 14. If they were here, he would be speaking to them now. 从句用过去式动词were, 主句用would be speaking例如:⑴、If you had taken my advice, you would not have made such a mistake.如果你听了我的劝告,就不会犯这样的错误;事实上你没有听我的劝告⑵、I shouldn’t have been able to write such good novels if I hadn’t lived among the peasants for five years.如果我不是和农民生活了五年,就不可能写出这样好的小说;事实上我和农民生活了五年⑶、If you hadn’t invited me, I shouldn’t have come to the party.如果你不邀请我,我就不会来参加你的舞会;事实上你邀请了我⑷、If I hadn’t been ill yesterday, I might have come to school.昨天要是不生病,我是可能来上学的;事实上我生病了⑸、If he hadn’t broken the law, he wouldn’t have been put in prison.如果他不违法的话,就不会被打入监狱;事实上他违法了⑹、If I had been your headmaster, I should have dismissed you from school. 我要是你们校长的话,就把你开除学籍了;事实上我不是注意:如果动作在进行中,主句要用:"主语+ would + have + 完成进行式动词+……⑺、If they had been here, he would have been speaking to them.从句动词用had been, 主句动词用have been speaking⑴、I f I were to work at this problem, I would do it in another way.要是我来解这道难题,我会用另外一种方法的;⑵、I f you were to do such a thing again, you would be punished. 如果你再做这样的事情,就会受到惩罚;⑶、I f I should work harder, I could make much more progress.假如我更努力学习的话,我会取得更大的进步;事实上我不可能努力学习⑷、I f it should rain tomorrow, I would stay at home.如果明天下雨的话,我将待在家里;根据天气情况,明天不可能下雨⑸、I f he should come, I could ask him for some advice.万一他来了,我就能够向他请教;事实上他来的可能性很小⑹、I f he came tomorrow, I would do it with him.如果明天他来的话,我将和他一起做此事;事实上他来的可能性很小⑺、If it should rain, the crops would be saved.从句动词用should rain,主句动词用be 如果天下雨,庄稼可能就收获了;⑻、If he were here, I would give him the books.从句动词用were, 主句动词用give 如果他在这儿,我可能会把书给他;注意:如果动作在进行中,从句不是主句要用:"If + 主语+ 过去进行式动词+……"⑼、If she were staying here now, I would let her ride my horse.从句动词用were staying, 主句动词用let如果她现在留在这儿,我可能会让她骑我的马;。

if条件状语从句中虚拟语气

if条件状语从句中虚拟语气

if条件状语从句中的虚拟语气一、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。

1. “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。

即:在非真实条件状语从句中,谓语动词按正常情况“后退一步”。

也就是:①与过去事实相反,在从句中用过去完成时形式表示。

②与现在事实相反,在从句中用过去一般时形式表示。

③与将来事实可能相反,在从句中用过去将来时形式表示。

主句中则用情态动词would,should, could 等加一个与从句一致的动词形式。

例:⑴、If I had come her yesterday, I would have seen him.⑵、If I were a teacher, I would be strict with my students.⑶、If it should snow tomorrow, they couldn't go out.2、注意事项:①if条件句中如有were, should, had,可以省去if,并使用倒装语序。

②在现代英语中if条件状与从句中的谓语动词如果是be其过去形式一般用were。

二、虚拟语气在if 引导的条件句中的用法:(一)、表示与现在事实相反的情况。

其句子结构为:从句:if + 主语+ 动词的过去式(be 用were) + ,,,主句:主语+ would (should, could , might) + 动词原形+ ,,例:1. If it weren’t for your help, we would get into trouble. 如果没有你们的帮助,我们就会陷入困境。

(而事实上得到了你们的帮助)2.If the weather were fine, I would go there. 如果天气好,我去那儿。

if虚拟语气的用法归纳

if虚拟语气的用法归纳

if虚拟语气的用法归纳虚拟语气是英语中常用的一种动词形式,用以表达与事实相反、未实现或假设的情况。

它通常用于条件句、建议、命令、愿望、推测等情况中。

以下是对虚拟语气用法的归纳:1.条件句中的虚拟语气:- 条件句中谓语动词用过去式(be动词用were),主句中使用would/could/might + 动词原形。

例如:If I were rich, I would travel the world. (were代替was,表示与现实情况相反的条件)- 如果条件是与现在或将来相反的情况,则使用过去完成时(had +过去分词)表示虚拟语气。

例如:If I had studied harder, I would have passed the exam. (实际上我没有考过)2.建议和要求中的虚拟语气:- 表示建议或要求时,主语从句中谓语动词用过去式(be动词用were),主句中使用should/ought to + 动词原形。

- 有时也可以用动词原形来表示建议或要求,并在主语从句前加should。

例如:I suggest that she should see a doctor. (我建议她去看医生)3.愿望和情态动词的虚拟语气:- 表达对现在事实的否定愿望时,主语从句中谓语动词用过去式(be 动词用were),主句中使用动词原形或过去式。

例如:I wish I were taller. (实际上我不高)- 表达过去或将来事实的否定愿望时,主语从句中谓语动词用过去完成式,主句中使用would/could/might + have + 过去分词。

例如:I wish I had studied harder. (实际上我没有努力学习)- 情态动词can't/won't + 动词原形用于表达对现在或将来事实的坚决否定愿望。

例如:I wish I could fly. (我希望我会飞,但实际上我不能)4.推测和假设中的虚拟语气:- 表达对现在事实的推测时,使用should/would/could/might + 动词原形。

虚拟语气在if引导的条件句中的用法三点

虚拟语气在if引导的条件句中的用法三点
表示与将来事实相反的虚拟条件句
If+主语+should(were to)+动词原型/动词的过去式
主语+would(could should might)+动词原型
虚拟语气在if引导的条件句中的用法三点:
从句(条件)
主句(目的)
表示于现在事实相反的虚拟条件句
If+主语+动词的过去式(be用were)
主语+would(shouldห้องสมุดไป่ตู้could might)+动词原型
虚拟语气在if引导的条件句中的用法三点:
从句(条件)
主句(目的)
表示于现在事实相反的虚拟条件句
If+主语+动词的过去式(be用were)
主语+would(should could might)+动词原型
表示与过去事实相反的拟条件句
If+主语+haddone
主语+would(should could might)+havedone
表示与过去事实相反的拟条件句
If+主语+haddone
主语+would(should could might)+havedone
表示与将来事实相反的虚拟条件句
If+主语+should(were to)+动词原型/动词的过去式
主语+would(could should might)+动词原型

if的条件句的三种用法

if的条件句的三种用法

千里之行,始于足下。

if的条件句的三种用法条件句在英语中是非常常见的一种句型,用于表达假设、可能性和条件关系。

if(如果)是条件句的引导词,它可以有不同的用法和用途。

下面将详细介绍if条件句的三种常见用法。

1. 条件虚拟语气条件虚拟语气用于表示假设、与事实相反的情况或不可能的情况。

它包括三种类型:与现在事实相反、与过去事实相反和与将来事实相反。

与现在事实相反:这种类型的条件句用于描述与现实情况相反或与过去和现在的条件不一致的情况。

它的结构是:“if + 过去完成时,主语 + would/could/might + 动词原形”。

例如:- If I had studied harder, I would have passed the exam.(如果我学习更努力点,我就会通过考试了。

)- If she had told me earlier, I could have helped her.(如果她早点告诉我,我本来可以帮助她的。

)与过去事实相反:这种类型的条件句用于描述与过去事实相反的情况。

它的结构是:“if + 过去完成时,主语 + would/could/might + have + 过去分词”。

例如:- If I had known he was sick, I would have visited him.(如果我知道他病了,我本来会去看望他的。

)第1页/共3页锲而不舍,金石可镂。

- If the weather had been better, we might have gone to the beach.(如果天气好些的话,我们也许会去海滩的。

)与将来事实相反:这种类型的条件句用于描述与将来事实相反的情况。

它的结构是:“if + 过去完成时,主语 + would/could/might + 动词原形”。

例如:- If I had more money, I would travel around the world.(如果我有更多的钱,我就会周游世界。

if的虚拟语气用法总结

if的虚拟语气用法总结

if的虚拟语气用法总结虚拟语气是指根据说话人的主观意愿、假设、推测等来表示假设、愿望、命令等情态的一种语气。

在条件句中,常用虚拟语气来表示与事实相反的情况。

总结if的虚拟语气用法如下:1. 虚拟条件句:- 类型1:表示可能实现的条件- If + 主语+ 动词(简单现在时),主语+ will + 动词原形。

- 例句:If it rains tomorrow, I will stay at home.(如果明天下雨,我会呆在家里。

)- 类型2:表示与事实相反的条件- If + 主语+ 动词的过去式,主语+ would/could + 动词原形。

- 例句:If I had money, I would buy a new car.(如果我有钱,我会买一辆新车。

)- 类型3:表示与过去事实相反的条件- If + 主语+ had + 过去分词,主语+ would/could + have + 过去分词。

- 例句: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。

)2. 虚拟表达愿望:- 类型1:表示对现在或将来的愿望- 希望、愿望等动词+ (that) + 主语+ (should) + 动词原形。

- 例句:I wish (that) I could speak fluent English.(我希望我能说一口流利的英语。

)- 类型2:表示对过去的愿望- 希望、愿望等动词+ (that) + 主语+ (should) + have + 过去分词。

- 例句:I wish (that) I had studied abroad when I was younger.(我希望我年轻时出国留学了。

)3. 虚拟表达建议、命令等:- 动词原形+ (that) + 主语+ (should) + 动词原形。

- 例句:I suggest (that) you should take a break.(我建议你应该休息一下。

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A. Were
If it were/ should be fine tomorrow , I would go to see him.
如果上天能够给我一个再来一次的机会, 我会对那个女孩子说三个字:我爱你。 如果非要在这份爱上加上一个期限,我希望是--一万年!
If the God ___sh__o_u_l_d_/_w__e_r_e_t_o__g_i_v_e_/_g_a(gveive) me another chance,I__w_o_u__ld__t_e_l_l__ (tell)the girl three words: I love her! If our love __h_a__d_t_o__ (have to) be set a time limit, I wish it w__o_u_l_d__b_e___ (be)10,000 years!
If they had had enough rain last year, they would have gained good harvest.
If he had driven more carefully yesterday, he would not have had the car accident .
错综时间虚拟条件句
• 所谓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:
错综时间虚拟条件句
If it had rained last night, the ground would be wet now.
省,并倒装成:Were / Should / Had +主+其他 如果If 这the只li小ttl老e m鼠o是us只e w鸟er,e 它a b就ir能d, 在it 天上
飞了mi。ght fly in the sky. Were the little mouse a bird, …
如If果ToTmomh了ad解le中ar国ne文d 化ab,ou昨t C天h他ine就se不cu会lture, h戴e w一o顶uld绿n色’t 的ha帽ve子wo出rn来a了gr。een hat.
要是昨晚下过雨的话,现在地面就会是湿的。
You would be much better now if you had taken my advice. 假若你当时听我的话,你现在就会好多了。
If I had not got married, I would still have been living abroad.
Had Tom learned about Chinese
culture, … 如Iwfo果wuel明dsh天troeu放altd假yho,auv我teoa就tads请atyy你ofof吃fodt好o.m吃or的ro。w, I
Should we have a day off tomorrow, …
Stage5---Conclusion
Step 1---
1. 判断是否虚拟
Yes!
2. 判断虚拟类型
3. 谓语形式 Present? Past? Future?
Exercise 高考链接
1. If he __________my advice, he
wouldn’t have lost his job.
A.followed
B. should follow
如果我没结婚,我会仍然一直住在国外。
If you’d listened to me, you wouldn’t be in such trouble now. 如果你听了我的话,你现在也不会有这样的麻烦了。 If the doctor had come in time, Amy would still be alive. 如果医生及时赶到艾米现在还会活着。
Subjunctive Mood
虚拟语气在if条件句中的用法
If he were a bird , he could fly in the big blue sky.
If I had a lot of money, I would buy a villa . (别墅)
If you had worked hard ,you would have passed the exam .
If he had received six more votes, he would be our chairman now.
如果他多得六票,现在就是我们的主席了。
Further Study
If虚拟句的倒装
Present
IWf IewreerIe a butterfly,
I wyou were to do it, the result _____ different.
A: will be B: would be C: may be D: would have been
4. ________ it to rain tomorrow, we would have to put off the visit to the Yangpu Bridge.
Past
HIfahdehheadgogtotuupp earlier ,
he could have caught the train.
Future
IfSIhSohuoldulIdwwinin the lottery, I would buy an expensive car.
若if从句中有were, had(助动词), should, if可
C. had followed D. would follow
2. If I ______ you, I ______ more
attention to English phrases.
A. was; shall pay B. am; will pay
C. would be; would pay
D. were; would pay
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