高中英语虚拟语气语法讲解
高中英语2025届高考语法复习虚拟语气知识讲解
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高考英语语法复习虚拟语气知识讲解一、基础知识(一)什么是虚拟语气谓语动词的作用不仅可以表示动作的时间、状态、假设(情感),也是一种语气(mood)的表现形式,表明说话的目的和意图。
(语气包含陈述语气、祈使语气、虚拟语气、疑问语气)虚拟语气用于表示假设、愿望、建议、命令等非真实或虚拟的情况,即与真实相反。
上学的时候老师经常举的一个例子,"If I were you"因为我不可能是你,这是一种不可能存在的事实,所以这是个虚拟语句。
总而言之英语中的虚拟语气可以分为两大体系:一是表示与事实相反的,或者是假象的情形,通常由if引导,叫做虚拟条件句;另一个体系是在名词从句中使用虚拟语气,表示建议,命令或者要求等语气,类似于上述美剧常用的台词。
(二)虚拟语气的用法这一部分我们主要用虚拟语气在条件句中的用法作为讲解与现在事实相反:If I had a map, I would lend it to you.如果我有地图我就借给你。
(但我没有)与将来事实相反:If I were to do the job, I would do it in a different way. 要是我来做这工作,我会是另一种做法。
(言外之意不是我做这个工作,用虚拟表达是我做这份工作的可能性很低)与过去事实相反:If anything had happened, he would have let us know.如果发生了什么情况,他早就通知我们了。
(所以没事发生)它们的共性都是表示与事实相反或者实现可能性不大3.特殊情况①在极少情况下,从句的谓语动词用原形,主句的谓语动词可用陈述语气(比较官方,正式,大气的说法,口语很少使用)If that be the official view, it cannot be accepted.如果这是官方的看法,这是不能接受的。
②if可以省略,但是语序要改为倒装Were I Tom I would refuse.如果我是汤姆我会拒绝。
高中英语虚拟语气的用法归纳
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高中英语虚拟语气的用法归纳以下是高中英语虚拟语气的用法归纳:虚拟语气是一种特殊的动词形式,表示假设、愿望、建议、命令、猜测等非真实的情况。
一、基本用法1. 与现在事实相反条件从句:If + 主语 + 动词过去式(be 动词用 were)主句:主语 + would/should/could/might + 动词原形例句:If I were you, I would study harder. (如果我是你,我会更努力学习。
)Wouldn't life be boring if we had everything we wanted? (如果我们想要什么就有什么,生活岂不是很无聊?)2. 与过去事实相反条件从句:If + 主语 + had + 过去分词主句:主语 + would/should/could/might + have + 过去分词例句:If I had known your phone number, I would have called you. (如果我知道你的电话号码,我就给你打电话了。
)Couldn't you have done better if you had tried harder? (如果你再努力些,难道不能做得更好吗?)3. 与将来事实相反条件从句:① If + 主语 + 动词过去式② If + 主语 + were to + 动词原形③ If + 主语 + should + 动词原形主句:主语 + would/should/could/might + 动词原形例句:If it rained tomorrow, we would stay at home. (如果明天下雨,我们就待在家里。
)If she were to come here tomorrow, I would be very happy. (如果她明天来这儿,我会非常高兴。
)If he should fail in the exam, how disappointed his parents would be!(要是他考试不及格,他父母该多失望啊!)二、固定搭配1. wish 后的宾语从句与现在事实相反:从句用一般过去时与过去事实相反:从句用过去完成时与将来事实相反:从句用 would/could + 动词原形例句:I wish I were as tall as you. (我希望我和你一样高。
高中英语知识点归纳虚拟语气的用法与句型
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高中英语知识点归纳虚拟语气的用法与句型虚拟语气是高中英语中重要的语法知识点之一,它在表达一些假设、条件、愿望、建议等方面起到了关键作用。
本文将对虚拟语气的用法和一些常见的句型进行归纳总结,帮助同学们更好地掌握和运用这一知识点。
一、虚拟语气的基本用法1. 表达与事实相反的假设:通常使用“if”引导,主句使用过去完成时,从句使用过去完成时或过去简单时。
例如: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。
2. 表达对过去情况的虚拟:通常使用“wish”引导,后接过去完成时。
例如:I wish I had gone to the party last night.我希望我昨晚去参加派对了。
3. 表达与现在事实相反的假设:主句使用过去式,从句使用过去完成时或过去简单时。
例如:She would be happier if she had more friends.如果她有更多朋友,她会更开心。
4. 表达对现在情况的虚拟:通常使用“wish”引导,后接过去时。
例如:I wish I were a bird and could fly in the sky.我希望我是一只鸟,可以在天空中飞翔。
5. 表达对将来的不可能或不太可能的情况:主句使用过去式,从句使用过去完成时。
例如:If I were you, I would not go to that dangerous place.如果我是你,我不会去那个危险的地方。
二、常见虚拟语气句型1. 虚拟语气与建议:It is important (necessary, advisable, essential, etc.) that + 主语 + (should) + 动词原形例如:It is necessary that you (should) finish your homework before playing games.你在玩游戏前完成作业是必要的。
高中英语语法-虚拟语气全总结
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①错综时间条件句: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,被称为错综时间条件句,动词的形式要根据它表示的时间作出相应的调整。
如:If you had followed my advice just now, you would be better now.If you had studied hard before, you would be a college student now.②if省略句在条件句中可以省略if, 把were, had, should提到句首,变成倒装句式。
如:If I were at school again, I would study harder.→Were I at school again, I would study harder.如果我还有上学的时机,我会更加努力学习。
If you had e earlier, you would catch the bus.→Had you e earlier, you would catch the bus.如果你来得早点,你就能赶上公共汽车。
If it should rain tomorrow, we would not go climbing.→Should it rain tomorrow, we would not go climbing.如果明天下雨的话,我们就不能登山去了。
③用介词代替条件状语从句常用的介词有with, without, but for。
如:What would you do with a million dollars" (=if you had a million dollars)如果你有100万元,你会做什么?We couldn’t have finished the work ahead of time without your help. (=if we hadn’t got your help)没有你的帮助,我们不可能提前完成这项工作。
(完整版)高中英语语法虚拟语气讲解
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高中英语语法讲解--虚拟语气1。
语气的定义和种类(1)语气的定义语气是动词的一种形式,它表示说话人对某一行为或事情的看法和态度。
(2)语气的种类A. 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。
We are not ready.Did it rain all day yesterday?What a fine day today!B. 祈使语气表使说话人的建议、请求、邀请、命令等。
Be careful.Don’t forget to clo se the window.Open the door, please。
C。
虚拟语气表使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.2。
虚拟语气一. 虚拟语气在条件句中的应用学习虚拟语气在条件句中的用法之前我们必须清楚条件句的种类:条件句有真实条件句与非真实条件句(或称虚拟条件句)两种。
真实条件句所表的假设是可能发生或实现的,句中的条件从句与结果主句都用陈述语气。
如:If it doesn’t rain tomorrow, I will go for a picnic。
假若明天不下雨,我就去野餐.Oil floats if you pour it on water. 你如把油倒在水里,油就浮起来。
虚拟条件句所表的假设则是不可能或不大可能发生或实现的,句中的条件从句与结果主句皆须用虚拟语), 主句的谓语用should (would, might, could)+动词原形。
如:If it were not raining, we should go for a picnic.如果现在不下雨的话,我们就出去野餐了。
(事实是:天在下雨,我们不能出去野餐.表示愿望。
)If he came here, he might be able to help you. 如果他来这,他就能够帮助你了。
(事实是:他没来这,他不可能帮助你。
高中虚拟语气
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04
虚拟语气在特定句型中应用
It is time that…句型
定义 It is time that…句型表示“现在是……的时候了”,其中 that从句中的谓语动词用过去时,有时也用“should+动 词原形”(较少见,且should不能省略)。
用法示例
It is time that we went to bed. 我们该睡觉了。或者 It is time that we should go to bed. 我们该睡觉了。
03
名词性从句中虚拟语气应用
宾语从句
wish后的宾语从句:表示与现在事实相反的愿望,从句用一般过去时;表示与过去事实相反 的愿望,从句用过去完成时;表示与将来事实相反的愿望,从句用could/would/might+动 词原形。
suggest, propose, recommend, demand, require, request, desire等动词后的宾语从句: 从句谓语由“should+动词原形”构成,其中的should在美国英语中通常可以省略。
虚拟语气在倒装句中应用
虚拟语气在倒装句中的应用主 要是指当虚拟条件句的谓语部 分含有were, had或should等词 时,可将这些词置于句首,采 用部分倒装的结构。
这种倒装结构在表达虚拟语气 时,可以使语气更加委婉、客 气或正式,常用于书面语中。
需要注意的是,在倒装结构中, 如果省略了if,则需要将were, had或should等词提至主语之 前,形成完全倒装的结构。同 时,主句中的语序和时态也需 要进行相应的调整。
和特殊用法的理解和运用还有待提高。
教师评语和建议
学生对虚拟语气的掌握情况良好
通过课堂表现和作业完成情况来看,学生对虚拟语气的掌握情况良好,能够正确运用虚拟语 气表达不同的意思。
高中英语语法讲解——虚拟语气
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2.这类主语从句常常用于表示要求、建议、 命令、请求、提议等,其谓语形式往往为 “ ( should)+ 动 词 原 形 ” 的 形 式 。 在 美 国,常省略should,而在英国,则往往不 省略should。
比如:
--It is necessary that the machine (should) be oiled everyday. 机器必须天天上油。
1.1.1.和现在事实相反的非真实条件句
这类非真实条件句表示和现在事实相反的情况。比如: --I would/should certainly go if I had the time.
如果我有时间,我一定会去的。 --If I were your father, I would criticize you more
--I never expected that the problem should be so complicated.
我从未想到问题会如此复杂。
--They just couldn’t believe that the new stadium should be so big.
他们简直不能相信新的体育馆会如此大。
--The teacher insisted that all the students (should) be on time.
老师要求学生们准时到校。
--He suggested that the regulations (should) be revised. 他建议修改规则。
The lawyer asked that the case (should ) be postponed for one month. 律师要求案子往后推迟一个月。
高中英语虚拟语气知识点总结
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高中英语虚拟语气知识点总结高中英语虚拟语气知识点总结虚拟语气是英语语法中一种用于描述假设、假想或可能性的语气。
在高中英语中,虚拟语气是一个相当重要的语法知识点。
本文将总结高中英语虚拟语气知识点,帮助学生更好地掌握虚拟语气的使用规则和技巧。
一、虚拟语气的定义及用途虚拟语气指的是表示假想、虚构、愿望、建议等情况的语气。
它强调实现的可能性很小或很远,或者根本就不可能实现。
虚拟语气通常使用“if”引导条件从句或用于表达思想、态度。
虚拟语气的用途主要有以下几个方面:1. 表示假想或虚构情况例如:If I were you, I would not do that.(如果我是你,我不会那么做。
)2. 表示可能性很小或很远例如:If you asked him, he might help you.(如果你问他,他可能会帮你。
)3. 表示愿望、要求或建议例如:I wish I could speak fluent English.(我希望我能说流利的英语。
)二、虚拟语气的形式虚拟语气形式主要有以下几种:1. 虚拟语气的过去式:在虚拟语气中,一般用过去式来表示对现在或未来的虚拟。
例如:If I had more time, I would read more books.(如果我有更多时间,我就会多看书。
)2. 虚拟语气的过去完成式:过去完成式用于表示“如果过去已经发生了某些事情,结果会是怎样”。
例如:If I had studied harder in high school, I would have gone to a better college.(如果我在高中时学习更努力,我就能进入更好的大学。
)3. 虚拟语气的“would + 动词原形”形式:“would +动词原形”形式通常用于表示愿望、要求、建议或者可能性。
例如:I wish you would stop smoking.(我希望你戒烟。
)If you would like to come, you are welcome.(如果你愿意来,欢迎你。
高中英语语法系列--虚拟语气讲义
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虚拟语气虚拟语气表示说话人的主观愿望、猜测、建议或与事实不符的假设等,也可以表示可能性较小的情况或不可能发生的情况,而不是客观存在的事实(表示客观事实要用陈述语气)。
虚拟语气是由句中谓语动词的特殊形式表现出来的。
虚拟语气常用于复合句中,也可用于简单句。
比较:If she asks me tomorrow,I shall do it.如果她明天请求我,我会做的。
(陈述语气,说话人认为请求的可能性大)If she asked me tomorrow, I should do it. 假如她明天请求我,我会做的。
(虚拟语气,说话人认为请求的可能性小或不可能请求)1 虚拟语气的用法1-1 虚拟语气用于条件状语从句中1)表示与现在事实相反的情况If I were/was not busy today, I should go with you.如果我今天有空,我会同你一起去的。
If he were/was here,he might talk with you.如果他在这里,他可能会同你谈谈。
If I were you,I wouldn't accept her suggestion.如果我是你,我不会接受她的建议。
If I knew the answer to the question,I should/ would tell you.如果我知道问题的答案,我当然会告诉你。
If we left now, we should/would arrive there in time.如果我们现在就动身,我们会准时到达那里。
If he didn't do exercise every day,he wouldn't be so strong.如果他不每天锻炼,他不会那样强壮的。
If it weren't raining, we would go fishing.要是现在不下雨,我们就去钓鱼了。
高中英语虚拟语气语法讲解(有答案)
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高中英语虚拟语气语法讲解虚拟语气是一种动词形式,表示说话人的一种愿望,假设,怀疑,猜测,建议等含义,虚拟语气所表示的含义不是客观存在的事实。
在条件句中的应用,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的或实际可能性不大的情况,故采用虚拟语气。
一、虚拟语气在从句中的使用虚拟语气即表达不可能发生或与预期相反的情况。
首先我们应熟悉它在三种时态里的使用情况,这是正确使用虚拟语气的基础。
这三种时态是:现在;过去;将来。
1、表示现在的虚拟式If I were a bird, I would fly to you. 如果我是只鸟,我就会飞到你身边去。
If it were not for their help, we should be in a very difficult position. 如果不是他们的帮忙,我们就会处于一个非常困难的境地。
2、表示过去的虚拟式If we had started earlier, we should not have missed the train.如果我们早一点动身的话,就不会误车了。
If she hadn’t been ill, she might have come. 如果她不是病了,可能会来的3、表示将来的虚拟式If Professor Li should have time tomorrow, we could ask him some questions.如果李教授明天有空的话,我们可以问他点问题。
If there should be no air, there would be no living things.如果没有空气,就不会有生物。
二、错综时间的虚拟句通常情况下,在非真实条件句中主句和从句的谓语动词所指时间是一致的, 但有时也可能指不同的时间,这时要根据上下文的意思采用不同的谓语动词形式.If I were you, I would have taken his advice. (从句指现在, 主句指过去)。
高中英语语法虚拟语气
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If I _____ you, I ______ do that.
A was, wouldn’t
B
B were, wouldn’t
C am , won’t D were, won’t
1
2
II 表示将来情况的虚拟语气
从句
主句
did/ wห้องสมุดไป่ตู้re
would
should +do
could + 动词原形
were to do
A were, would B were, will
C is, would
D is , will
2 If I ___A__ a bee, I _____ work much harder.
A were, would B were, shall
C had, will
D have, should
3 If I ___B_ much money, I ____ buy a house.
C were, would prevent
D were, would have prevented
3 I ______ if she ______ me.
A would have overslept , didn’t call
B would have overslept, hadn’t called C oversBlept, hadn't called
should
might
1 If it didn’t snow tomorrow, I would go with you.
2 If I should go to Beijing University two years later,
高中英语语法虚拟语气
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三. 虚拟语气的常见句型
1.would rather 与 had rather 表希望, 后跟的从句用虚拟, 动词一般用过去式。
eg: I would rather you didn’t trouble him.
Jane went home on Saturday, but her father
would rather she _C____ home on Sunday.
2. insist: 表示坚持一个事实时, 从句动词 不用虚拟
He insisted that we should discuss the question at once.
he had done his homework and handed it in.
2.主语从句中
主句中的谓语动词
从句中的谓语动词
1.表语从句中和同位语从句中
主句中的主语
从句中的谓语动词
suggestion; demand; order; (should)do
proposal; plan; advice; decision等
eg : My suggestion is ( that) we (should) do the
experiment again.
3.我希望明天你能跟我一起去。
I wish you could go with me tomorrow.
四.虚拟语气在主从复合句中的用法
1.宾语从句中
主句中的谓语动词
从句中的谓语动词
suggest; demand; order; (should)do
insist; request; desire; propose; decide等
2). I’m getting tired. It’s time we _w__e_n_t__
高中英语语法虚拟语气讲解
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高中英语语法虚拟语气讲解Ⅰ 动词的语气语气有三种:陈述语气,祈使语气和虚拟语气.语气表示说话人持有的态度或看法.Ⅱ 相关知识点精讲1.虚拟语气在if 条件句中的用法⑴ 辨别if 引导真实条件句和if引导的虚拟条件句的区别If he has time, he will go with us.= Probably he has time and will go with us. If he had time, he would go with us.=But in fact he has no time.⑵ 虚拟条件句中主句和从句的谓与动词构成形式如下表:if条件句中的谓与动词主句的谓与动词与现在的事实相反1. 行为动词用did 形式2. be动词用wereshould / would /could might + 动词原形与过去的事实相反had + doneshould / would /could might + have done与将来的事实相反1. 行为动词用did ;be动词用were2. should + 动词原形3. were to + 动词原形should / would /could might + 动词原形⑶ 混合时间的虚拟语气如果条件句中的动作和主句的动作不是同时发生,主句和从句的谓语动词的形式应分别根据各自所表示的时间加以调整。
1) If I had received the passport yesterday, I would start today.2) If he had telephoned me last night, I would see him now.3) If he had followed the doctor’s advice, he would be all right now.⑷ if虚拟条件句中的到装如果虚拟语气的条件从句中含有were, had, should可将if省略,把were, had, should 放在主语前面。
高中虚拟语气讲解
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高中虚拟语气讲解虚拟语气虚拟语气表示动作或状态与事实相反,或不可能发生的情况。
一.虚拟语气用于条件状语从句中1. 表示与现在事实相反或不可能发生:条件状语从句:一般过去时(虚拟语气中be→were)主句用:would(should, could, might)+动词原形。
If we had time now, we would read it again.If I were you, I would work hard.2. 表示与过去事实相反或不可能发生:条件状语从句:had+过去分词;主句:would(should, could, might)+have+过去分词。
If he had taken my advice, he would have succeeded in the test.If I had known your telephone number then, I would have called you.3. 表示与将来的事实可能相反或不可能发生:条件状语从句:①一般过去时②should +动词原形③were to+动词原形;主句:would(should, could, might)+动词原形。
If it should rain, the crops would be saved.If it were to snow tomorrow, they would not go out.P.S 虚拟条件句的特殊情况(1)混合/错综型虚拟语气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,称为‘错综条件句’,动词的形式要根据它所表示的时间作出相应的调整。
If you had followed my advice, you would be better now.(从句说的是过去,主句是现在)If I were you, I would have taken his advice.(从句是现在,主句是过去)(2)省略if的虚拟语气如果从句中含有were/ should/ had时,则可以把这三个词置于句首,省略if.采用倒装语序。
高中英语语法虚拟语气讲解
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虚拟语气概念: 虚拟语气用来表示说话人的主观愿望或假想,所说的是一个条件,不一定是事实,或与事实相反。
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的或实际可能性不大的情况,故采用虚拟语气。
一、1真实条件句真实条件句用于陈述语气,假设的情况可能发生,其中if 是如果的意思。
时态关系句型:条件从句主句一般现在时shall/will + 动词原形If he comes, he will bring his violin.典型例题The volleyball match will be put off if it ___. A.will rain B. rains C. rained D. is rained 答案B。
真实条件句主句为将来时,从句用一般现在时。
注意:1) 在真实条件句中,主句不能用be going to表示将来,该用shall, will.(错) If you leave now, you are never going to regret it.(对) If you leave now, you will never regret it.2)表示真理时,主句谓语动词便不用shall (will) +动词原形,而直接用一般现在时的动词形式。
2.非真实条件句1)时态:可以表示过去,现在和将来的情况。
它的基本特点是从句时态逆推。
[例句]①.If they were here now , they would help you .如果他们在这里,他们就会帮助你。
②If you had come earlier , you would have met him.如果来得早些,你就会见到他了。
③. If it should rain , the crops would be saved.如果下雨,庄稼就能得救了。
3. 混合条件句、错综条件句虚拟条件句中的主句和从句的动作发生在不同的时间,这时主句和从句的谓语动词的形式根据各自发生的时间来表达。
高中英语2025届高考语法复习情态动词与虚拟语气知识讲解
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高考英语语法复习情态动词与虚拟语气知识讲解一、情态动词(1)表示能力时,can只用于一般现在时,could仅用于一般过去时;而be able to则有更多的时态,如将来时、完成时等。
I haven’t been able to read that report yet.He will be able to skate as well as you.(2)Was/were able to表示能力时,侧重经过努力而成功做到某事;而could仅表示具备能力,不说明是否实施了能力。
He studied hard and was able to pass the exam.(3)用在其他动词,如might,may,would,want,hope等之后表示能力只能用be able to。
He might be able to fix your car.(1)must还可以表示质问或感情色彩,意为“偏要,偏偏”。
Why must it snow on Saturday?(2)should还可以表示惊奇、愤怒、失望等特殊情感,尤其用在以why,who,how等开头的疑问句中或某些感叹句中。
why should you be so late today?(1)must作“必须”讲的一般疑问句,其肯定回答用must,否定回答用needn’t或don’t have to。
-Must I pay now?-Yes, you must./No, you needn’t.(2)need还可以作实义动词,有人称和数的变化,后跟带to的不定式作宾语。
She needed to go out for a walk.(1)两者在表示过去的习惯动作或行为时常可通用。
When we were children, we would/used to go skating every winter.(2)Used to与would都不能与表示具体频率、次数的词及特定的时间状语或具体的一段时间连用。
英语虚拟语气讲解(高中)
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英语虚拟语气讲解(高中)一、语气概述语气是动词的又一种形式,通过说话人所说的话体现出说话人对某一个动作或状态所持的态度和看法。
英语中有三种语气:1.陈述语气——用来陈述事实,广泛用于陈述句和疑问句中。
现行中学英语教材中,绝大部分句子均属陈述句语气,句中谓语动词有各种时态和语态变化。
2.祈使语气——用来提出请求、要求、发出命令等,只用于祈使句。
3.虚拟语气——用来表示主观愿望和假想虚拟的情况,即所说内容与事实相反,或者实现的可能性极小,或者是假想虑拟的情况。
如:He is honest.他很诚实。
(陈述语气)Don‘t belate next time.下次别迟到。
(祈使语气)If I were you,I would not go.我要是你,我就不会去。
(虚拟语气)I wish I had a lot of money.要是我有很多很多钱就好了。
(虚拟语气)二、虚拟语气虚拟语气是一种特殊的动词形式,用来表示说话人所说的话不是一个实事,而只是一种愿望、假设、怀疑、建议、猜测、可能或纯粹的空想等。
虚拟语气通过动词的形式来表示。
主要用在if条件状语从句中,名词性从句中(主语从句、宾语从句和表语从句),也可以出现在简单句中。
如:If you should miss the chance,you would feel sorry for it.(if条件句)如果你错过了这次机会,你会难过的。
If I were in your position,I would marry her.如果我是你,我就娶她为妻。
(if条件句)If it had not rained so hard yesterday,we could have played tennis.(if条件句)如果昨天没有下大雨,我们就能玩网球了。
I insisted that he(should)go with us.我坚持让他和我们一起去。
My suggestion is that we should go there at once.我的建议是我们应该马上去那儿。
高中英语语法-虚拟语气全总结
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高中英语语法-虚拟语气全总结虚拟语气通常用于表达与现实相反的假设情况。
在非真实条件句中,虚拟语气的形式有两种:与现在事实相反的假设和与过去或将来事实相反的假设。
与现在事实相反的假设通常使用if+主语+助动词的过去式(如were。
did。
had)+动词原形,主句则使用XXX动词原形。
例如:If I had time。
I would XXX。
如果我有时间,我会参加会议。
与过去或将来事实相反的假设则有三种形式:①if+主语+动词过去式;②if+主语+wereto+动词原形;③if+主语+should+动词原形(注意不能是would)。
主句同样使用XXX动词原形。
例如:If you had taken my advice。
you would not have failed in the exam。
如果你听了我的建议,你就不会在考试中失败了。
在错综时间条件句中,动词形式要根据表示时间的状语从句作出相应的调整。
另外,在条件句中可以省略if,把were、had、should提到句首,变成倒装句式。
例如:Were I at school again。
I would study harder。
如果我还有上学的机会,我会更加努力研究。
Had you arrived earlier。
you would have caught the bus.If it rains tomorrow。
XXX climbing.What would you do with a n dollars?We couldn't have finished the work ahead of time without your help.Otherwise。
I would have taken part in the sports meeting.XXX me of your birthday。
or else I would have known nothing about it.A man who s drinking water would be dead in about seven days.I might have been XXX assistance。
高中英语语法讲解--虚拟语气
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虚拟语气一.语气的定义和种类1. 语气的定义语气是动词的一种形式,它表示说话人对某一行为或事情的看法和态度。
2. 语气的种类A. 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、疑问句和感叹句。
We are not ready.Did it rain all day yesterday?What a fine day today!B. 祈使语气表示说话人的建议、请求、邀请、命令等。
Open the door, please.Don’t forget to close the window.C. 虚拟语气表使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。
二.虚拟语气1. 条件句中的虚拟语气if 引导真实条件句和if引导的虚拟条件句的区别If he has time, he will go with us. (Probably he has time and will go with us.)If he had time, he would go with us. (But in fact he has no time.)★★★虚拟条件句中主句和从句的谓语动词构成形式如下表if条件句中的谓语动词主句的谓语动词与现在事实相反过去式(did/ be动词用were) would/could/might/should+do(动词原形)与过去事实相反过去完成时(had + done)would/could/might/should+have done(过去分词)与将来事实相反1. 过去式(did/ be动词用were)2. should +do (动词原形)3. were to +do (动词原形)would/could/might/should+do(动词原形)①If he had time now, he would go with you.( 与______事实相反)②If he were not busy now, he would go with you. ( 与______事实相反)③If you had come a few minutes earlier, you would have met the famous singer.(与______事实相反)④If it were to snow/should snow/ snowed this evening, they would not go out.(与______事实相反)练习:与现在事实相反的句子①If you_______ here, you__________ the famous star.如果你在这里,你就会见到这位明星。
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高中英语虚拟语气语法讲解
2011-08-14 00:00
高中英语虚拟语气语法讲解
虚拟语气是一种动词形式,表示说话人的一种愿望,假设,怀疑,猜测,建议等含义,虚拟语气所表示的含义不是客观存在的事实。
在条件句中的应用,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的或实际可能性不大的情况,故采用虚拟语气。
一、虚拟语气在从句中的使用
虚拟语气即表达不可能发生或与预期相反的情况。
首先我们应熟悉它在三种时态里的使用情况,这是正确使用虚拟语气的基础。
这三种时态是:现在;过去;将来。
If it were not for their help, we should be in a very difficult position. 如果不是他们的帮忙,我们就会处于一个非常困难的境地。
如果我们早一点动身的话,就不会误车了。
If she hadn’t been ill, she might have come. 如果她不是病了,可能会来的
questions.
如果李教授明天有空的话,我们可以问他点问题。
If there should be no air, there would be no living things.
如果没有空气,就不会有生物。
二、错综时间的虚拟句
通常情况下,在非真实条件句中主句和从句的谓语动词所指时间是一致的, 但有时也可能指不同的时间,这时要根据上下文的意思采用不同的谓语动词形式.
If I were you, I would have taken his advice. (从句指现在, 主句指过去)。
换成我是你,我就会听从他的建议。
If I had taken my raincoat with me this morning, I would not be wet now. (从句指过去,主句指现在)。
如果我今天早上带了雨衣,现在就不会被淋湿了。
If we hadn’t been working hard in the past few years, things wouldn’t be going so smoothly.
(从句指过去,主句指现在)。
如果过去几年里不努力工作,现在的情况就不会如此顺利了。
If the weather had been more favorable, the crops would be growing
still better.(从句指过去,主句指现在)。
如果当时的天气更好点,现在的庄稼就会长得更好。
If we had not got everything ready by now, we should be having a more terrible time tomorrow. (从句指现在,主句指将来)
如果现在一切还没准备好,明天情况就更糟了。
三、含蓄条件句
有时假设的情况并不以条件从句表示出来,二是暗含在上下文中,比如通过介词短语来表示。
这些介词常是:but for, without, otherwise等。
如:
But for your advice, I could not have done it so successfully.
如果不是听了你的建议,我就不会做的如此成功。
The change could not have taken place without the open-door policy.
没有开放的政策,就不会有如此大的变化。
I was so busy then, Otherwise, I would have told him the answer.
我当时很忙,否则,我就会把答案告诉他的。
四、虚拟语气在某些从句中的应用
1、wish后的宾语从句(would rather (sooner) 后也是如此)
I would rather they came tomorrow. 我宁愿他们明天来。
How I wish it wasn’t raining now. 如果现在不下雨该多好呀!
I wish I had not been to yesterday’s party. 我要不去参加昨天的宴会就好了!
但would rather 后没有主语则应使用零不定式.
2、suggest, order, demand, propose, command, request, desire, insist 等动词后的宾语从句
They demanded that the aggressor troops (should) be withdrawn immediately.
他们要求侵略者立刻撤退。
I propose that we (should) set a deadline for handing in the plan.
我提议应该制定一个交计划的最后期限。
3、it is desired, it’s suggested, it’s requested, it was ordered that, it was proposed that, it is necessary that, it is important that, it has been decided that 等之后的主语从句:
It is necessary that he (should) be sent there at once. 有必要立刻派他前往。
It’s required that Mr. Lee (should) give a performance at the party.
要求李先生在晚会上出个节目。
It’s desired that we (should) get everything ready by tonight.
要求我们在今晚前把一切准备好。
4、在suggestion, motion, proposal, order, recommendations, plan, idea 等后面引出的表语从句和同位语从句中:
The order came that all villagers evacuate from the village.
要求所有村民撤退的命令下达了。
I second Xiao Li’s motion that we set up a special board to tackle the problem.
小李提议成立一个特别委员会处理此问题,我附议。
5、在下列句型中要用 should +动词原形。
如:it is a pity, it is a shame, it is incredible, it is strange, it is no wonder
It is a great pity that he should be so conceited.
很可惜,他这个人竟然这么自大。
It’s strange that she should have failed to see her own shortcomings.
奇怪的是他竟看不到自己的缺点。
6、as if, as though 引起的从句,其用法同 wish 构成的宾语从句一样
I remember the whole thing as if it happened yesterday.
我清楚地记得这件事就象昨天刚刚发生的。
It seems as if it were spring already 似乎现在已经是春天的样子了。
7、以 lest, for fear that, in case 引出的从句,动词多用 should + 动词原形,表示“惟恐”的意思。
He took an umbrella with him lest it should rain. 他带上雨伞以免下雨。
He burned all the important documents for fear that they should fall
into the enemy's hands.
他把所有的重要文件全部烧毁以免落入敌人的手中。
Here’s some money in case you should need it. 这是点钱以免你用地着。
8、在 if only 引出的感叹句中
If only I hadn’t lost it! 如果我要不丢该多好!
If only I could see him once! 再能看到他一次该有多好!
Oh, if he only knew how we miss him! 噢,希望他能知道我是多么思念他!
9、在 it is high time that 之后的定语从句中,谓语动词常用过去式表表示虚拟语气。
It is time that we went (should go) to bed. 现在该上床了。
It’s high time that we (should) put an end to this controversy.
现在该是结束这场争辩的时候了。
10、用于expect, believe, think, suspect 等动词的否定或疑问形式后的宾语从句中。
I never expected that the new apartment should be so small. 没料到这桩新公寓竟这么小。