高中英语动词的语气
高中英语语法虚拟语气课件
1. If I had money, I would build a school for these poor children. 2. If I were you, I would forgive him.
与现在事实相反
3. If I had taken your advice, I wouldn’t ’ have made this mistake. 4. If he had been there, he would have made things worse. 与过去事实相反
3. would rather that --
现在： 过去时 过去： 过去完成时 未来： 过去时
• I would rather you paid me now. (现在 现在) 现在 • I would rather you had gone, too. (过去) (过去 过去) • Don’t come. I would rather you came tomorrow. (未来 未来) 未来
6.without和but for ，otherwise构成含蓄虚拟 和 构成含蓄虚拟 (but for要不是 要不是) 要不是
• Without sunlight, people’s life would be ’ different from today. • But for your help, I wouldn’t have finished the ’ work. • Without your help, I would have failed. • But for water, it would be impossible to live in the desert. •We'll go earlier, otherwise we might not get a seat.
2023年高中英语语法英语的语气分类与虚拟语气精讲
2023年高中英语语法英语的语气分类与虚拟语气精讲关于动词的语气动词的语气是动词的一种形式。
根据说话意图的不同，动词需要不同的形式，这就是所谓的语气（mood）。
关于语气的分类，不同的语法学有不同的看法，有的语法学家将语气分为陈述语气、疑问语气、祈使语气和虚拟语气四种，有的语法学家将语气分为陈述语气、祈使语气和虚拟语气三种（即将“疑问语气”并在“陈述语气”之中）。
■关于陈述语气陈述语气(indicative mood)用于陈述事实或提出看法。
英语中的句子绝大部分都是陈述语气。
我们在谈论时态和语态时，都主要是指陈述语气的动词变化。
如：He did very well in the examination. 他考得很好。
She heard the front door shut. 她听见大门给关上了。
I wonder if I might use your phone. 不知可否用一下你的电话。
He lived there happily for a year. 他在那儿愉快地居住了一年。
■关于疑问语气疑问语气(interrogative mood)用于提出问题。
英语中的疑问句均属于疑问语气。
如：Where do you come from? 你是哪里人?Why are you so nervous? 你为什么这样紧张？What did you do that for? 你做这个干什么?How many windows are broken? 打破了多少扇窗户?Why don’t you think more about other people? 你怎么就不多为别人着想呢?■关于祈使语气祈使语气(imperative mood)用于提出命令、要求、请求、邀请、劝告或建议等。
英语中的祈使句使用的就是祈使语气。
在祈使语气中，动词要用原形，其否定式是在动词原形前加do not或don’t。
如：Come and sit on the sofa. 来坐在沙发上。
英文句子三语气
英文句子三语气，陈述祈使和虚拟.一、动词的语气语气用来区别讲话人对某一行为或事情的看法和态度。
英语中的语气(mood)有三种，分别是陈述语气、祈使语气和虚拟语气。
1.陈述语气陈述语气一般用来叙述事实或就事实提出询问，主要用于陈述句、疑问句和某些感叹句。
Where there is a will, there's a way. 有志者事竟成。
Can you help me carry the box upstairs 你能帮我把箱子搬到楼上吗？How I missed the life in the countryside! 我多么想念乡村的生活啊！2.祈使语气祈使语气表示说话人向对方提出请求或下达命令。
Come this way, please! 请这边走。
Don't make any noise, will you 别吵，行吗？Do be careful when crossing the street. 过马路时一定要小心。
3.虚拟语气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。
If I were a bird, I could fly in the air. 如果我是一只小鸟，我就能在空中飞行。
I wish it were spring all the year round. 但愿四季如春。
May good luck be yours! 祝你好运！二、条件句中的虚拟语气条件句中表虚拟，时态后退是真理；有be一律变成were, 我酷卖书主中坐；在含有非真实条件句的复合句中，其构成有三种形式：与现在事实相反if条件句的谓语：were did , 主句的谓：would (couldshouldmight) + do与过去事实相反if条件句的谓语：had done , 主句的谓：would(couldshouldmight) + havedone与将来事实相反if条件句的谓语：did/ were ,主句的谓：(could should might) + dowere to do1．表示与现在事实相反的条件条件从句用动词的过去式（be动词用were），主句用should（第一人称）或would（全部人称）+动词原形。
高中英语知识点归纳情态动词的情态和语气
高中英语知识点归纳情态动词的情态和语气高中英语知识点归纳：情态动词的情态和语气情态动词是英语中常见的一类动词，用来表示说话人的某种态度、意愿、能力等。
它们在句中通常与其他动词搭配使用，帮助表达某种含义。
本文将对情态动词的情态和语气进行归纳。
一、情态动词的情态含义1. Can“Can”表示某种能力或可能性。
当用于陈述句时，表示某人具备某种能力。
例如：- I can swim.（我会游泳。
）- He can speak three languages.（他会说三种语言。
）2. Could“Could”是“can”的过去式，表示过去具备的能力或某种可能性。
它也可以用来表示礼貌地表达请求。
例如：- I could run very fast when I was young.（我小时候跑得非常快。
）- Could you please pass me the salt?（你能请递给我盐吗？）3. May“May”用于表示允许、请求或推测。
例如：- You may go now.（你现在可以走了。
）- May I borrow your pen?（我可以借用你的钢笔吗？）- She may be at home.（她可能在家。
）4. Might“Might”是“may”的过去式，表示过去某种猜测、推测或可能性。
例如：- He might have forgotten the appointment.（他可能忘记了约定。
）- It might rain later.（说不定一会儿会下雨。
）5. Must“Must”表示一种推测或强烈的命令。
例如：- It must be cold outside.（外面肯定很冷。
）- You must finish your homework before going out.（出去之前你必须完成作业。
）6. Shall“Shall”常用于疑问句中，表示征求对方的意见或提出建议。
高中英语语法_动词的语气——虚拟语气讲解
高中英语语法动词的语气——虚拟语气讲解语法复习十：动词的语气——虚拟语气一、语气的定义和种类l、语气：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：(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 not ready. 我们没准备好。
What a fine day it is!多好的天气啊!(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。
请打开门。
(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. 如果我是你，我就学英语了。
May you succeed! 祝您成功！二、虚拟语气在条件从句中的用法条件句有两类，一类是真实条件句，一类是虚拟条件句。
如果假设的情况是有可能发生的，就是真实条件何。
在这种真实条件句中的谓语用陈述语气。
如: If it doesn’t rain tomorr ow, we will go to the park.如果明天不下雨，我们就去公园。
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 ha d seen you yesterday, he would have asked you about it. 如果他昨天见到你，他会问你这件事的。
(事实上他昨天没见到你，因此也未能问你这件事。
)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语气。
现将虚拟条件从句和主句的动词形式列表如下:从句主句与现在事实相反动词的过去式（be的过去式一般用were）would/ should/ could/ might + 动词原形与过去事实相反had + 过去分词would/ should/ could/ might + have + 过去分词与将来事实相反动词过去式，should + 动词原形，were to + 动词原形would/ should/ could/ might + 动词原形注: 主句中的should只用于I、we，但在美国英语中，should常被would代替；从句中的should 可用于各种人称。
衡中-语气的三种类别(直陈、祈使、虚拟)常考知识点总结整理
衡水高中英语新高考语法复习讲义语气的三种类别（直陈、祈使、虚拟）常考知识点总结整理英语语法：语气（Mood）是一种动词形式，随着说话人意图的不同，动词需要用不同的语气。
英语中有三种语气：01. 直陈语气（Indicative Mood）表示所说的话是一种事实，动词可用各种时态。
如：I think your approach is correct.我认为你的方法是正确的。
The situation could still be remedied.局面还有挽回的余地。
How many steps go through from raw materials to products?从原料到成品需要多少工序？例题：1. Miss Wu has taught in the school .A. for ten yearsB. ten years agoC. since ten years【答案选A】句子的谓语动词用的是现在完成时，而ten years ago 用于一般过去时，所以B 不能选；for后面跟一段时间，since后跟时间起点。
2. I can see, there is only one possible way to keep away from the danger.A. More thanB. As far asC. IfD. Unless【答案选B】逗号前后并非表示条件、让步关系，也不是用来加强语气。
应用as far as I can see 来缓和语气，表示“在我看来，只有一种可能脱离危险的办法”。
02. 祈使语气（Imperative Mood）表示说话人向对方提出请求或命令等，动词可用原形。
如：Don't make a noise.别出声。
Remember to e-mail me.记得给我发电子邮件。
Please read through the instruction in advance.请预先读完说明书。
高中英语语法词法知识讲解—虚拟语气：
高中英语语法词法知识详解——虚拟语气一、动词的语气和种类:语气(mood) 是一种动词的形式，用以表示讲话人对某一行为或事情的看法和态度。
英语中的语气(mood)有三种，分别是陈述语气、祈使语气和虚拟语气。
【注】条件从句用动词的过去式(be动词用were), 主句用should(第一人称)或would(全部人称)+动词原形。
可用情态动词could, might代替should, would表示情态。
@. 表示与现在事实相反的假设和结果:eg.①If 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)②If 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)③ If it were Sunday tomorrow, I would go and see my friends. 明天要是星期天的话，我就去看望我的朋友。
④If I were you, I should go and try.我要是你，我就去试试。
⑤If wishes were horses, beggars might ride. 如果梦想能成为马匹，叫花子都有了坐骑⑥I would go if they treated me like a slave. 要是他们把我当奴隶对待，我就走。
@. 表示与过去事实相反的假设和结果:eg.①If I had known your telephone number yesterday, I should(would, could, might) have telephoned you.如果昨天我知道了你的号码，我就会给你打了。
(事实上我昨天不知道你的号码。
)②If 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。
高中语法虚拟语气
6. 如果她更加努力的话，她就成功了。
If she had worked harder, she _w_o_u_l_d_h_a_v_e__s_u_c_c_e_e_d_e_d_.
7. 如果我是你，我将不回这个电话。
If I were you, I w__o_u_l_d_n_'t_r_e_t_u_rn_ the call.
(与过去事实相反)
If he had known her address, he would had gone to visit her.
(与过去事实相反)
If I should have a chance, I would try my best.
(与将来事实相反)
If it were fine tomorrow, I would go shopping.
If you came to Brunei, you would have to take off your shoes before going into someone’s house.
If you had been in Korea with me last year, you would have attended a wedding ceremony.
4. 如果你听了医生的话，你早就恢复健康了。
If you _h_a_d_l_is_t_e_n_e_d_ to the doctor, you would have already recovered.
5. 如果没有虚拟语气，英语将容易多了。
If there were no subjunctive mood, English _w_o_u_l_d_b_e_ much easier.
高中英语语法虚拟语气
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 虚拟语气
chemical works (should) be(be)closed
down.
同位语从句
• He suggested that we _(s_h__o_u_l_d_)__g_o_ (go) to Beijing for sightseeing. 宾语从句
• The proposal that we (should ) go(go)out
that,so that等引导的条件状语从句中，动 词用“would/could/should/might + do”， 表示虚拟 She called him lest he should go out.
They left early for fear that they would meet him.
特殊句型
1.wish引导的虚拟句
表示愿望( wish), wish接宾语从句有三种情 况： 1) 现在：用过去式（did） 2) 过去：用过去完成式 (had done) 3) 将来：用情态动词(would / could/might + do)
• I wish (that) I werБайду номын сангаас a bird.
He learns English so hard as if he would go to the US.（将来）
虚拟语气
虚拟语气中的几个特例
5.在would (had) rather(宁愿) 引导的宾语从 句中
1. would rather that
现在： 过去时 过去： 过去完成时 未来： 过去时
如果条件状语中有were, had, should时, 可 以倒装成：Were / Should / Had +主+其他
高中英语语法--虚拟语气课件(54张)
错综时间条件句
• If he had prepared well for his lessons yesterday, he wouldn’t have so many difficulties now.
二、 祈使语气
用来表示说话人的请求，命令或劝告等。 动词要用原形，其否定式在动词前加do not.
Let me have a try. Don’t be late again. Don’t say it in Chinese. Say it in English. Let’s go and play basketball.
三、 虚拟语气
• 表示说话人所说的话不是事实，而 是一种与事实相反的假设，愿望， 猜测或建议等等。
三、 虚拟语气
• （一）在条件句中的 用法
• 1 与现在事实相反
从句谓语 主句谓语
动词过去 Should/wo 式 uld/ could /might +动词原形
与现在事实相反
• If I had time now, we should read it again.
If I hadn’t been busy,
补充2.错综时间条件句
• 主句谓语动词所表示的动作和条件 从句谓语动词所表示的动作并不是 同时发生,这时动词的形式并不完 全按照上述表格形式进行,而需要 按照各自的时间来调整,这样的句 子就叫错综时间条件句.
错综时间条件句
• If you had followed the doctor’s advice (then), you would be all right now.
1.英语动词有三种语气,陈述语气,祈使语气和虚拟语气。
3. If I had taken your advice, I wouldn’t have made a mistake. 4. If you had come earlier, you might have caught
1.英语动词有三种语气， 陈述语 气，祈使语气和虚拟语气。
2. 定义：用来表示说的话不是事 实，或者是不可能发生的情况， 而是一种愿望，建议，假设的 语气叫虚拟语气。
一：虚拟语气在条件状语 从句 中的用法。把这个表格记下来。
现在 过去
将来
If 从句的谓语形式 主句的谓语形式
一般过去时
would/could/should /might +V.（原）
3. the
The guard rules.
of
the
meeting
insisted
that
everybody_B____
A. obeys B. obey C. will obey D. would obey
4. see
“Jack’s been a doctor.”
ill
for
some
weeks.”
Without your help, I would have failed.
But for water, it would be impossible to live in the desert.
二：虚拟语气特殊句型：
过去虚拟： 1. wish
过去完成时
宾语从句 现在虚拟：
过去时（were）
将来虚拟：
“I
know.
高中语气
语气语气是一种动词形式，表明说话人对某个动作或状态所持的态度。
英语中有三种语气：陈述语气，祈使语气和虚拟语气。
一、陈述语气（用来陈述一个事实或对某个事实表示疑问或发表感叹）We are working very hard these days.这几天我们正在拼命工作（陈述事实）Will it be convenient for you？你方便吗？（对事实提出疑问）How cold it is today!今天好冷啊！（对某事发表感叹）二、祈使语气（祈使句以动词原形开头。
只能用现在时态，而且通常针对第二人称，表示请求、建议、或发布命令）Come next time.下次再来Don’t play football in the street.别在街上踢足球注：如果要表示第一、三人称的祈使语气，常用动词let开头Let me go out.让我出去吧Let Mary not do it.让玛丽别做此事三、虚拟语气（表示与事实相反的假设或不太可能实现的愿望）1、虚拟语气在非真实条件句中的运用含有条件从句的句子叫条件句。
条件句可以是真实条件也可以是非真实条件。
如果条件从句表示与事实相符或有可能实现的假设，那么这个句子就叫真实条件句；如果条件从句表示与事实相反或不太可能实现的假设，那么这个句子就叫非真实条件句。
非真实条件句中要用虚拟语气If引导的非真实条件句的虚拟语气用法If引导的非真实条件句虚拟语气用法从句主句对过去的虚拟had done Would/could/should/might+have done对现在的虚拟Did/were Would/could/should/might+do对将来的虚拟did/wereWere to doshould +doWould/could/should/might+do虚拟过去：表示与过去的事实相反的假设虚拟现在：表示与现在事实相反的假设虚拟将来：表示与将来发生的事实相反的假设If I had not seen the film last night, I would have visited Mary.要是昨晚不看电影的话，我会去看玛丽。
英语动词有 语气
9.I Ｂ _____ you some money, but I hadn’t any on me then. A. would lend B. would have lent C. could lend D. may have lent Ｃ 10. A few minutes earlier and we _____ the rain. A. have caught B. had caught C. could have caught D. were to catch 11.--- “Have you ever been to Beijing?” --- “No, but I wish I _____” Ｄ A.have B. will C. do D. had Ｃ 12.We _____ the work on time without your help. A. hadn’t had finished B. didn’t have finished C. couldn’t have finished D. can’t have finished
• 3. If he _________ me tomorrow, I would let him know. • A. should call B. should not have been able • C. were not able to call D. are not able to call • 4. If you asked your father, you ______________ permission. • A. may get B. might get • C. should have called D. maybe get • 5. ______ today, he would get there by Friday. • A. Would he leave B. Was he leaving • C. Were he to leave D. If he leaves • 6. ______I you, I would go with him to the party. • A. Was B. Had been C. Will be D. Were
高中英语情态动词与虚拟语气_文档
情态动词与虚拟语气用法详解一．情态动词主要特征：1）不能单独作谓语，只能和行为动词或系动词连用，构成谓语；2）没有人称和数的变化，时态也只限于一般现在时和一般过去3）后面接动词原形，即不带to的不定式；二．情态动词的基本用法1.must（1）“必须，一定，得”，表示的是命令性的语气。
Eg.You must hand in your composition today.*回答must引起的一般疑问句，如果是否定意思，常用needn't。
Eg.-Must I come at four o'clock?？-Oh, no, you needn't come at four.。
*用mustn't 则表示“禁止”。
Eg.Cars mustn't park in front of the entrance.（2）表示“偏要，硬要”做某事。
表示与说话人的意愿相反和不耐烦的语气Eg.As I was about to start to work, the telephone must ring.must 与have to区分：must更强调说话者的主观意愿；have to则强调客观上的必要性，常译为“不得不”，而have to可以有多种时态变化。
2.can（1）表示能力。
Eg.I can swim across the river when I was young.（2）表示客观（理论）上的可能性，用于肯定句中。
Eg.Anybody can make mistakes.（3）表示请求和允许，怀疑多用于否定与疑问结构中：Eg.-Can I go now? -Yes, you can.Can the news be true?重点短语：1)cannot but do sth. 表示“不得不，只好”Eg.I cannot but choose to go with them.2)cannot/ can never...enough/too表示“再......也不为过”：Eg.You cannot be too careful to cross the road.3)can not help but do, can not help doing 表示“不得不”“禁不住”：Eg.The girl couldn't help but live on herself.3.may（1）表示可能，意为“或许，也许”Eg.She may come to your birthday party tomorrow.（2）表示允许、许可。
英语动词的三种语气
英语动词的三种语气（最新版）编制人：__________________审核人：__________________审批人：__________________编制单位：__________________编制时间：____年____月____日序言下载提示：该文档是本店铺精心编制而成的，希望大家下载后，能够帮助大家解决实际问题。
文档下载后可定制修改，请根据实际需要进行调整和使用，谢谢!并且，本店铺为大家提供各种类型的经典范文，如词性大全、句法大全、句型大全、从句大全、时态大全、语态大全、语法大全、虚拟语气、用法辨析、其他资料等等，想了解不同范文格式和写法，敬请关注!Download tips: This document is carefully compiled by this editor.I hope that after you download it, it can help you solve practical problems. The document can be customized and modified after downloading, please adjust and use it according to actual needs, thank you!In addition, this shop provides you with various types of classic sample essays, such as part of speech, syntax, sentence pattern, clause, tense, voice, grammar, subjunctive, usage analysis, other materials, etc. If you want to know the different formats and writing methods of the model essay, please pay attention!英语动词的三种语气英语中，人们常常用不同的动词形式来表达自己的不同看法和态度。
英语虚拟语气讲解(高中)
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。
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动词的语气语气用来区别讲话人对某一行为或事情的看法和态度。
英语中的语气(mood)有三种，分别是陈述语气、祈使语气和虚拟语气。
1.陈述语气陈述语气一般用来叙述事实或就事实提出询问，主要用于陈述句、疑问句和某些感叹句。
Where there is a will, there's a way.有志者事竟成。
Can you help me carry the box upstairs你能帮我把箱子搬到楼上吗？How I missed the life in the countryside!我多么想念乡村的生活啊！2.祈使语气祈使语气表示说话人向对方提出请求或下达命令。
Come this way, please!请这边走。
Don't make any noise, will you别吵，行吗？Do be careful when crossing the street.过马路时一定要小心。
3.虚拟语气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。
If I were a bird, I could fly in the air.如果我是一只小鸟，我就能在空中飞行。
I wish it were spring all the year round.但愿四季如春。
May good luck be yours!祝你好运！二、条件句中的虚拟语气英语中条件从句有两类，一类是真实条件句，另一类是非真实条件句。
如果假设的情况可能发生，是真实条件句；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。
A．真实条件句真实条件句表示的假设是可能发生或实现的，主句和从句的谓语动词都要用陈述语气。
If he doesn't come at 8, we won't wait for him.如果他八点不来，我们就不等他了。
If a flood happened in the past, there was usually a great loss of life and property. 过去发生洪水的话，常有很大的生命和财产损失。
We shall go there unless it rains tomorrow.如果明天不下雨，我们将去那里。
I'll let you use my bike on condition that you keep it clean.如果你能保持车子干净，我就让你用我的自行车。
B．非真实条件句在含有非真实条件句的复合句中，主句和从句的谓语动词都要用虚拟语气，其构成有三种形式：与现在事实相反if条件句的谓语：were did主句的谓：would (couldshouldmight) + do与过去事实相反if条件句的谓语：had done主句的谓：would(couldshouldmight) + have done与将来事实相反if条件句的谓语：didwere主句的谓：should do would (couldshouldmight) + do were to do1．表示与现在事实相反的条件条件从句用动词的过去式（be动词用were），主句用should（第一人称）或would（全部人称）+动词原形。
可用情态动词could, might 代替should, would表示情态。
If it were Sunday tomorrow, I would go and see my friends.明天要是星期天的话，我就去看望我的朋友。
If I were you, I should go and try.我要是你，我就去试试。
If wishes were horses, beggars might ride.如果幻想能成为马匹，叫花子都有了坐骑would go if they treated me like a slave.要是他们把我当奴隶对待，我就走。
2．表示与过去事实相反的条件条件从句用动词的过去完成时，主句用should（第一人称）或would （全部人称）+have done，也可用could, might代替should, would。
If I had known your telephone number yesterday, I would have telephoned you.如果昨天我知道你的电话号码，我就给你打电话了。
If it had not rained this morning, I should have gone shopping.今天早上要是没下雨，我就去买东西了。
The flood might have caused great damages to the people if we had not built so many reservoirs.倘若我们没有修建这么多的水库，洪水就会使人民遭受巨大的损失。
3．表示在将来不太可能实现的条件表示在将来不太可能实现的条件从句有三种形式：①weredid条件从句用动词的过去式（be动词用were），主句用should（第一人称）或would（全部人称）+动词原形。
也可用could, might代替should, would。
If he were here tomorrow, I would speak to him.明天如果他在这里的话，我就和他谈谈。
If you dropped the glass, it would break.你要是把杯子掉下来，会打碎的。
If she had time, she could help me.她要是有时间，就会帮我了。
②should do条件从句中不管什么人称都用should do，可表示有偶然实现的可能性。
If it should rain, the crops could be saved.假如下雨，庄稼可能就有救了。
We would trust him if he should be honest.如果他真是诚实的，那我们就相信他。
③were to do条件从句用were + to do。
这种形式比较正式，常出现在书面语中，其假设成份很大，实现的可能性很小。
If I were to do the work, I should do it in a different way.要是我做这项工作，我就会以不同的方式去做。
If the headmaster were to come, what would we say to him假如校长来了，我们对他说什么呢？对比：将来不太可能实现的三种非真实条件句中的虚拟语气对比If it snowed tomorrow, I would stay at home.如果明天下雪的话，我就留在家里。
（常用形式）If it should snow tomorrow, I would stay at home.如果明天下雪的话，我就留在家里。
（可能性较小）If it were to snow tomorrow, I would stay at home.如果明天要下雪的话，我就留在家里。
（可能性最小）C．省略if的条件句在书面语中，非真实条件句中有were, had, should时，可以省略if，而把were, had, should放在主语前，用倒装结构。
Were it necessary, I might go without delay.如果需要的话，我可以立即去。
（= If it were necessary......）Had you taken my advice, you wouldn't have failed in the exam.你要是听了我的建议，就不会考试不及格了。
（= If you had taken my advice......）Should I have time, I would call on her.要是有时间，我就去看她。
（= If I should have time......）D．错综条件句虚拟条件句中的主句和从句涉及的动作发生的时间不一致，这时主句和从句的谓语形式应按照各自动作发生的实际时间来表达。
If you hadn't watched TV yesterday, you wouldn't be so sleepy now.如果你昨天不看电视，你现在也就不会这么困了。
（从句yesterday 说明过去，主句now说明现在）If they had left home early this morning, they would arrive in half an hour.如果他们今天一早就离开家的话，再过半小时他们就该到了。
（从句说明过去，主句说明将来。
）If you hesitated this moment, you might suffer in the future.如果你此刻犹豫不决，你将来会吃苦头的。
（从句说明现在，主句说明将来）注意：在很多情况下，我们也可以用was来代替当主语是第一人称或第三人称单数时的were。
If were here tomorrow...也可以说成：If he was here tomorrow...I wish I were a bird.也可以说成：I sish I was a bird.但倒装句型中的were不可被was来替换。
Were I in your position,I would not do it.如果我处在你的位置，我是不会干这件事的。
E．含蓄条件句非真实条件句中的条件从句有时不表达出来，只暗含在上下文中，这种句子叫做含蓄条件句。
含蓄条件句大体有三种情况：1．条件暗含在短语中He would not get such a result without your help.没有你的帮助，他就不会有今天的成果。
(条件暗含在介词短语without your help中) But for you, I could not be recovered so soon.要不是有你，我就不会恢复得这么快。
(条件暗含在But for you中)This same thing, happening in the past, would lead to a disaster.同样的事，如发生在过去，就会酿成大祸。
(条件暗含在分词短语happening in the past中)He must have been there, or he never could know the place so well.他一定是去过那儿，否则他绝不会对那个地方如此熟悉。