虚拟语气详解及时态
二、虚拟语气（Subjunctive Mood）
1. 主语从句中的虚拟语气
主语从句（常用形式主语it 来代替，结构为It is that…）中的虚拟语气主要取决于某些用来表示建议、命令、要求、惊异和失望等的形容词和过去分词，其形式为：（should）+ 动词原形。常这样用的形容词有：
appropriate，advisable，better，desirable，essential，imperative，important，insistent，natural，necessary，preferable，strange，urgent，vital等。
过去分词有：
desired, demanded, ordered, requested, suggested, recommended, required 等。
例如：
It is essential that you (should) win the voters’ hearts.
It was suggested that he (should) join the club activities.
2. 表语从句和同位语从句中的虚拟语气
在表示建议、命令、主张、目的和愿望等的名词后面的表语从句和同位语从句中谓语动词要求使用虚拟语气。其形式为：（should）+ 动词原形。
常这样用的名词有：
resolution, pray, decision, motion, suggestion, preference, proposal, advice, recommendation, desire, demand, requirement, order, necessity, request, idea 等。
例如：
He gave orders that the guests (should) be hospitably entertained. 他下令热情款待这些客人。
His proposal is that we (should) get rid of the bad habits.
3. 宾语从句中的虚拟语气
1）某些动词后所接宾语从句中的谓语动词要求用虚拟语气，用来表示建议、命令和要求等。其形式为：（should）+ 动词原形。
常这样用的动词有：ask (要求), advise, determine, decide, command, insist, intend, move, prefer, propose, order, recommend, request, require, suggest, urge, demand, desire, direct等。例如：He insisted that the meeting (should) be put off. 他要求推迟那个会议。
They proposed that all the plans (should) be discussed at the meeting. 他们建议所有的计划都应该在会上讨论。
2）在以it为形式宾语的复合宾语从句中也可以用虚拟语气，其形式为：（should）+ 动词原形。这一句型中使用的形容词（宾补）与主语从句中的虚拟语气所使用的形容词相同。例如：
We think it advisable that he (should) think deeply before acting. 我们认为他在行动之前好好考虑一下才是明智的。
3）wish后面所跟的宾语从句中的虚拟语气表示某种不能实现的愿望。
例如：
I wish I knew what was going to happen. 但愿我能知道要发生什么事。
She wished she had stayed at home. 她后悔当时不在家。
I wish I were rich. 我巴不得我很有钱。
注意：在表示对过去情况的虚拟时，有时也可以用下列形式：
wish + 主语+ would（could）+ have + 过去分词
I wish I could have seen her last night. 要是我昨天晚上能够见到她那该多好。
4. if条件句中的虚拟语气形式
1）if 非真实条件句所表示的假设则是不可能或不大可能发生或实现的，句中的主句与从句都用虚拟语气。
例如：
If there were no gravity, we should not be able to walk. 假如没有引力，我们就不可能行走。
I wo uldn’t have known what these were for if I hadn’t been told. 假如别人不告诉我，我就不知道这些东西是干什么的了。
2）正式文体中，有时可把虚拟条件句中的连词if省去，而将were, had, should 等助动词（不包括行为动词）提到主语前面倒装处理。如果句中没有were, had 或should 时，既不能省略if，也不能倒装。例如：
Were I to meet him tomorrow (= If I were to meet him tomorrow), I should ask him about it. 要是我明天见到他，我就会问他这件事的。
Had I had the money last year (= If I had had the money last year), I would have bought the house. 如果我去年有了这笔钱，我就买那所房子了。
3）时间错综条件句：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。例如：
If I were you, I would have taken his advice. 我要是你，就采纳他的建议了。（从句指现在，主句指过去）
If the weather had been more favorable, the crop would be growing still better. 如果气候更适宜一些，庄稼会长得更好。（从句指过去，主句指现在）
5. 含蓄虚拟条件句
1）有时假设的情况并不以条件从句形式表示出来，而是通过一个介词短语或其他方式表示。常用的词或短语有：without, but for, but that, otherwise, or, but 等。例如：
Without your help (=If we had not had your help), we could not have succeeded. 要是没有你的帮助，我们是不会成功的。
But for electricity (= If there were no electricity), there would be no modern industry. 要是没有电，就不会有现代工业。
He was having a meeting; otherwise he would have come over to help us. 他当时正在开会，否则的话他就来帮我们了。
He felt very tired yesterday, or he would have attended the party. 他昨天很累，不然他就参加那个聚会了。
2）在某些暗含虚拟条件的简单句中，虚拟语气可通过上下文表现出来。谓语动词用
should/would be 形式和should/would have been 虚拟形式。例如：
Any men in his position would have done like that. 任何人处在他的位置都会那么做的。
You should (ought to) have come earlier. 你本应早点来的。
6. 其他句型中的虚拟语气
1）在would rather, would sooner, would just as soon, might as well 和would prefer 等后面所跟的从句中，也要用虚拟语气，表示愿望，意为“宁愿、但愿”。其形式为：
①“would rather (would sooner…) + 主语+ 谓语动词过去式” 表示现在或将来的情况。
②“would rather (would sooner…) + 主语+ 动词过去完成式”表示过去的情况。例如：
I’d rather he didn’t go now. 要是他现在不走就好了。
I’d just as soon you had been here yesterday. 要是你昨天在这里就好了。
2）在句型“It is (high/ about) time…” 后面也可以跟虚拟语气，从句中常用过去式。有时也用“(should) + 动词原形”，意为“该是……的时候了”。例如：
It is time that the boy (should) go to school. 这个小孩该上学了。
It is high time (that) the weather improved. 天气真该好起来了。
3）在“if only” 引起的感叹句中也要求用虚拟语气，表示愿望。
形式为：①用过去式或“wou ld/could + 动词原形” 表示与现在或未来事实相反的愿望。
②过去完成式表示与过去事实相反的愿望。例如：
If only you would listen to our advice. 要是你听我们的建议就好了。
If only I had not been busy last week! 要是上周我不忙该多好啊！
注：if only 也可以用于虚拟条件句中。例如：
If only I had more money, I could buy a car. 要是我有更多的钱，我就可以买辆车了。
4）连接词“in case, lest, for fear that” 可以用来引导虚拟语气。其形式通常为：“…lest (in case, for fear that) + 主语+ should + 动词原形”。lest, for fear that 后接从句中的should 可以省去，in case 连接从句中的should 通常不省去，但是in case 句中可以不用虚拟语气，而用陈述语气。lest, for fear that 后面也可以接其他形式。例如：
He took his coat with him in case it should rain. 他带着雨衣以防下雨。
I will not make a noise for fear that I (should/might) disturb you. 我不会做声的，以免打扰你。Care must be taken in using this method lest overflow (should) occur. 在使用这一方法的时候要谨慎小心，以免发生溢流现象。
一、动词的时态和语态
（Tenses and Voices of Verbs）
动词的时态
时态是谓语动词所表示的动作或情况发生时间的各种形式。英语动词有16种时态：
但是常见的只有九种：一般现在时、一般过去时、一般将来时、现在进行时、过去进行时、
现在完成时、过去完成时、过去将来时和现在完成进行时。常用的时态只有八种。
1．一般现在时
1) 表示经常性、习惯性的动作；表示现在的状态、特征和真理。句中常用often, usually, every day等时间状语。
2) 在时间状语从句和条件状语从句中，用一般现在时表示将来。
3) 有时该时态可表示按计划、规定要发生的动作，句中都带有时间状语，但限于少数动词如begin, come, leave, go, arrive, start, stop, return, open, close 等。例如：
He goes to school every day.
If you come this afternoon, we'll have a meeting.
2．一般过去时
l) 表示过去某时间发生的事、存在的状态或过去反复发生的动作。
2) 表示过去经常发生的动作，也可用“used to”和“would +动词原形”。
注意：used to表示过去常发生而现在不再发生的动作或存在的状态。另外“be used to + 名词或动名词”表示“习惯于……”。例如：
He worked in a factory in 1986.
I used to smoke when I was a college freshman.
3. 一般将来时
一般将来时表示将来的动作或状态，其表达形式除了“will或shall+动词原形”外，还有以下几种形式。
l) “be going to+动词原形”，表示即将发生的或最近打算进行的事。例如：We are going to have a meeting today．
2) go, come, start, move, sail, leave, arrive 等词可用进行时态表示按计划即将发生的动作；有时用一般现在时也可表示将来。例如：
I’m l eaving for Beijing.
3) “be to+动词原形”表示按计划要发生的事或征求对方意见。例如：
The boy is to go to school tomorrow．
4) “be about to+动词原形”表示即将发生的动作。例如：
We are about to leave．
4．现在进行时
1) 现在进行时表示现在正在进行的动作，由“to be+现在分词”构成，另外“系动词+介词或副词”也表示进行时的意义。例如：
What are you doing?
The bridge is under construction．
2) 表示感觉、愿望和状态的某些动词如have, be, hear, see, like 等词一般不用进行时。
5. 过去进行时
过去进行时表示过去某一时刻、某一阶段正进行的动作，由“was/were+现在分词”构成。例如:
He was reading a novel when I came in．
6. 现在完成时
现在完成时由“have十过去分词”构成。其使用有以下情况：
1) 现在完成时所表示的动作在说话之前已完成，而对现在有影响。句中没有具体时间状语。例如：
He has gone to Fuzhou. (说话人认为他不在该地)
He has been to Fuzhou. (说话人认为他在该地)
2) 现在完成时所表示的动作开始于过去，持续到现在，也许还会持续下去。常用for 或since 表示一段时间的状语或so far, now, today, this week/month/year 等表示包括现在时间在内的状语。例如:
He has studied English for 5 years.
He has studied English since 1985.
注意：表示短暂时间动作的词，如come, go, die, marry, buy 等的完成时不能与for，since 等表示一段时间的词连用。
3) 现在完成时还可用在时间和条件状语从句中，表示将来某时完成的动作。例如：
I’ll go to your home when I have finished my homework．
7．过去完成时
l) 过去完成时由“had+过去分词”构成。过去完成时的动词表示过去某一时刻或某一动作之前完成的动作或状态。句中常用by, before, until, when 等词引导的时间状语。例如：By the end of last year we had built five new houses.
2) 过去完成时的动词还可表示过去某一时刻之前发生的动作或状态持续到过去某个时间或持续下去。例如：
Before he slept, he had worked for 12 hours.
8. 过去将来时的用法
过去将来时表示从过去的某时间看来将要发生的动作或存在的状态。过去将来时由“should/would+动词原形”构成。第一人称用should，其他人称用would。例如：They were sure that they would succeed.
9. 现在完成进行时
现在完成进行时由“have(has)+ been+现在分词”构成，表示现在以前一直在进行的动作。有些词，如work, study, live, teach 等用现在完成进行时与用现在完成时意思差不多。例如：
I have worked here for three years．
I have been working here for three years.
但多数动词在这两种时态中表示不同意思。例如：
I have written a letter. (已写完)
I have been writing a letter. (还在写)
注意：表示短暂动作的动词，如finish, marry, get up, come, go 等不能用这种时态。
动词的语态
l. 概念与构成：当句子的主语是动作的执行者时,谓语的形式用主动语态；当句子的主语是动作的承受者时，谓语要用被动语态。被动语态由助动词“be+过去分词”构成，时态通过be 表现出来。如下表所述：
2. 一些特殊的被动结构：
1) 短语动词的被动结构：用于这类被动结构的短语动词要作为整体看待，即要把它们看作单字及物动词。例如：
The baby is looked after carefully.
2) 有些动词形式上是主动结构，但表示被动的意思:
①具有及物意义的不及物动词的被动意义
在主语是物的句子里，有些动词的主动形式可以表示被动意义。常用的这类动词有sell, read, feel, write, wear, wash, open, clean, cook, keep, cut, fill, blow, measure, lock, run, record, begin, shut 等等。例如：
The book sells well. 这本书很畅销。
Your composition reads well. 你的作文读起来很不错。
This pen writes smoothly. 这支钢笔好用。
②动名词主动形式表示被动意义
通常是物作want, need, require 等动词的主语时（也可以是人）表示事物（或人）客观上需要……，用动名词一般式的主动形式作宾语表示被动意义。例如：
The classroom wants/needs/requires cleaning. 教室需要打扫。
这种用法的动名词改用不定式一般式的被动形式后也可表同样意义。例如：
The classroom wants to be cleaned.
虚拟语气选择题练习
虚拟语气选择题练习 一、初中英语虚拟语气 1． ---Tom is always making so many mistakes in his English exercises! --- Yeah. If he ________ more careful, he ________ fewer mistakes. A．was; will make B．is; would make C．were; will make D．were; would make 【答案】D 【解析】 试题分析：句意：汤姆总是在英语练习中犯那么多的错误！—如果他能更细心一些，他就会犯更少的错误。 表示与现在事实相反的假设，If+主语+动词过去式（be动词用were），主语+would/should/might/could+动词原形。根据题意及句型，故选D。 考点：考查虚拟语气的用法。 2．--------- Come and join us, Jim! ---------- I’m sorry I can’t . If I _______ time, I would certainly go. A．will have B．have had C．had D．had had 【答案】C 【解析】 试题分析：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并不是事实，而是一种假设、愿望、怀疑或推测。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。 （1）、与现在事实相反 若与现在事实相反，条件从句的谓语用过去式（be通常用were），主句谓语用“should （would, could, might）+动词原形” （2）、与过去事实相反 若与过去事实相反，条件从句的谓语用过去完成时（had+过去分词），主句谓语用“should （would, could, might）+have+过去分词” （3）、与将来事实相反 若与将来事实相反，条件从句的谓语用过去式（be通常用were），主句谓语用“should （would, could, might）+动词原形”： 句意：吉姆，来加入我们吧！抱歉，我不能。如果我有时间，我肯定会去的。结合语境可知下文中表示与现在相反的事实，故条件状语从句中用一般故去时态，选C。 考点：考查虚拟语气 3．If I _____ one million dollars, I________ travel around the world with my parents. A．have; will B．had; will C．had; will D．had; would 【答案】D
真实条件句,虚拟语气.
当我们陈述了一个事实，而又不是很有把握，就可以在陈述句后加一个简短问句，称为反意疑问句。首先看以下例句：（1） You like calssical music, don't you? 你也喜欢古典音乐，对吗？(2 He lived in Vienna, too,didn't he? 他也住在维也纳，对吗？（3）Your parents can swim, can't they? 你父母会游泳，是吗？（4） Tony doesn't like classical music,does he? 托尼不喜欢古典音乐，对吗？（5） This music isn't very popular, is it? 这音乐并非十分流行，对吗？从以上句子可以看出，反意疑问句是由“助动词/ 系动词be（肯定或否定）+主语（代词）” 构成的。在反意疑问句的构成中要注意以下几点： 1.前面当陈述句如果是肯定的，反意疑问句就要用否定形式，如（1）、（2）、（3）；前面的陈述句如果是否定的，反意疑问句就要用肯定形式，如（4）、（5）； 2.反意疑问句的主语必须是代替前面主语的代词； 3.翻译疑问句的谓语动词在时态和人称上要与前面陈述句谓语动词保持一致。陈述句部分如果有标识否定意义的词，反意疑问句要用肯定式。如：They have never visited his home, have they? 他们从来没有到他家玩过，是吧？在回答反意疑问句时，要特别注意英、汉两种语言习惯的差别。试看下面当例句：——Mr Smith isn't American, is he? 史密斯先生不是美国人，对吧？——Oh yes, he is.不对，他是美国人。可以看出，在英语中，无论问题是怎样问的，只要答语的事实是肯定句，就要用YES；只要答语的事实是否定的，就要用NO. 编辑本段英语18种特殊的反意疑问句介绍 1.祈使句。祈使句后一般加上will you或won't you构成反意疑问句，用will you 多表示“请求”，用won't you 多表示提醒对方注意。例如：Look at the blackboard, will you/ won't you?看黑板，好吗？Let引导的祈使句有两种情况：1Let's...,后的反意疑问句用shall we或shan't we。例如：Let's go home, shall we/ shan't we? 回家吧，好吗？还可以用may I来表示征求对方的同意或许可。2Let us/me...后的反意疑问句用will you或won't you。例如： Let me have a try, will you/won't you? 让我试一试，行吗？ 2.感叹句。感叹句后加反意疑问句时，其反意疑问句需用be的一般现在时态的否定形式。例如：What fine weather, isn't it? 多好的天气啊，是吧？ 3. 当陈述部分谓语动词是need, dare, used to，且这些词被用作实义动词时，其反意疑问句需用do的适当形
高中英语虚拟语气详细讲解大全
高中英语虚拟语气详细讲解 虚拟语气 什么是虚拟语气？是的，我们要学习虚拟语气就必须先弄明白它的概念。 虚拟语气包含两种：一种指与事实相反或不可能发生。“虚拟条件句+虚拟主句”的结构都属于这一类；even if、even though、as if、as though引导的状语中如果需要用到虚拟语气也属于这一类；wish、would rather后面接的宾语从句表示不可能实现的愿望，还是属于这一类。 另一种指与事实实际是否发生没有直接关系。如和suggest、order、demand等表示建议、命令、要求等相关的名词性从句都属于这一类。 大家知道以上两类虚拟语气后，我们就从从句的角度来系统学习虚拟语气。紧跟小简老师的步伐哦！ 一. 虚拟条件句中的虚拟语气 1、表示与现在事实相反的情况 从句：If+主语+did(be动词用were) 主句：主语+ should/would/might/could+do
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） If I knew his telephone number,I would tell you. 如果我知道他的，我就会告诉你。（事实：不知道） 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) 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/might/could+have done If I had got there earlier,I should/would have met her. 如果我早到那儿，我就会见到她。（事实：去晚了） 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、表示与将来事实相反的情况
高考虚拟语气用法详解()
高考虚拟语气用法详解 一·语气概述 和时态语态一样，语气也是谓语动词的一种形式，它表明说话者的目的和意图。英语中有三种语气：陈述语气，祈使语气和虚拟语气。（有的语法书说语气有四种，即还包括疑问语气）。 eg：①He doesn’t see very well in his right eye .他右眼视力不太好。（陈述语气） ②Have they ever been to Australia ?他们去过澳大利亚没有？（疑问语气） ③Please read through the instruction in advance .请先通读说明书。（祈使语 气） 二·虚拟语气概述 在英语中，由于说话人的意图不同，动词需用不同的形式，称为语气。虚拟语气是指说话人表示一种假设的情况，一种愿望，怀疑，推测，请求等，即认为动词所表示的动作或状态并非事实。虚拟语气可用于状语从句，名词性从句，定语从句及其他结构中。 三·非真实条件句中的虚拟语气 真实条件句（遵循主将从现原则） A.由If引导的两种条件句： 非真实条件句（虚拟语气） 以下为If在非真实条件句中虚拟语气的形式和用法： 假设类型If从句主句 与现在事实相反did (be用were)should/would/ could/might do 与过去事实相反had done should/would/ could/might have done 与将来事实相反1)did 2)were to do 3)should do should/would/ could/might do eg：①If I were you ,I would reconsider their advice .如果我是你的话，我会重新考虑他们的意见。（与现在事实相反） ②You would not have caught a cold if you had put on more clothes .如果你多穿了些衣服，你就不会得感冒了。（与过去事实相反）
虚拟语气详解
虚拟语气详解 虚拟语气表示说话人的主观愿望（往往与客观事实相反），或是表示假象和猜测。虚拟语气无论从形式上还是时态上都比较复杂，需要归类记忆。 虚拟语气大体分为三类：(1) be型虚拟(2) were型虚拟(3) if 条件句及主句虚拟下面会详细说每种虚拟形式的特征和规律，考试时先判断属于哪种虚拟类型，剩下的皆是套路~ （1）be型虚拟（基本是套路） 形式：should + 动词原形，should可以省略 用法：1）表示“命令、建议、要求”等意义词语之后的宾语从句用be型虚拟，常见的词如下: demand, desire, insist, order, ask, command, propose, recommend, suggest, prefer, require, request等 最常见的形式是这类动词后面接着一个宾语从句，则宾语从句的谓语部分要用（should）+ 动词原形来虚拟 例: We demand that the meeting（should）be postponed. The manager suggested that we (should) work together. 注意：有时候你所见到不一定是上述动词引导的宾语从句，而是由上述词变体后所引导主语从句(it做形式主语，如：it is advised/ suggested/ requested/ ordered/ proposed that…)、表语从句或同位语从句 例如：It is required that the students (should) learn a foreign language. (主语从句) The requirement is that all the equipment in the meeting room (should) be checked twice before. (表语从句) We didn’t stand for his proposal that the meeting (should)be postponed. (同位语从句) 只要看到句中有上述动词或其变体，不管词性怎么变、句型怎么变，都用be型虚拟！ 特例：suggest和insist这两个比较特殊，当suggest作“暗示、表明、说明”讲，insist 作“坚持说”讲，后面一般跟的是客观事实，不需要虚拟~这是一个比较重要的考点，体会下面两组句子： We all suggest that a lab (should) be built. 我们都建议建一个实验室。 Her expression suggests that she is angry. 她的表情说明她生气了。 She insisted that we should find the source of the river. 她坚持主张我们应该找到河的源头。 She insisted that she had done nothing wrong. 她坚持说自己没做错事。 suggest 的区别很明显，但insist有点难辨别，一般来说如果insist后面跟的是某种主张，或是坚持要做一件事，那么用虚拟。 2）表示主观看法，常表示“某事是必要的、重要的。。。怎么怎么样的”，尤其是在“ it is +名词/形容词+ that从句”结构中，常见的形容词包括：advisable, desirable, essential, imperative, important, necessary, obligatory, proper, dispensable, impossible, natural, surprising等 例如：It is advisable that you (should) leave now. It is necessary that teenagers (should) take part in outside activities. It is of great importance that smoking (should) be banned in public area.
虚拟语气练习题及答案解析
情态动词、虚拟语气60题 1. ——Don’t forget to bring my new books tomorrow afternoon. —— No, I＿＿＿＿＿＿＿. A. don’t B. can’t C. won’t D. couldn’t 2. ——I hear you’ve got a set of Australian coins.＿＿＿I have a look? —— Yes, certainly. A. Do B. May C.Shall D. Should 3. He seldom listens to others. He＿＿＿＿＿answer for what he has done. A. shall B. will C. can D. would 4. ——May I leave the office before 5 o’clock in the afternoon? ——No, I’m afraid you＿＿＿＿＿＿＿. A. needn’t B. shouldn’t C. mustn't D. won’t 5. —— Shall I tell John about it? —— No, you＿＿＿＿. I don’t know his telephone number. A. needn’t B. wouldn’t C. mustn’t D. shouldn’t 6. Mr Bush is on time for everything. How＿＿＿it be that he was late for the opening ceremony? A. can B. should C. may D. must 7. The traffic light is red, so I＿＿＿＿＿＿stop my car. A. must B. have to C. can D. mustn’t 8. —— What happened to the young trees we planted? —— The trees＿＿＿＿＿＿well, but I didn’t water them. A. might grow B. needn’t have grown C. would grow D. would have grown 9. I was really anxious about you. You＿＿＿home without a word. A. mustn’t leave B. shouldn’t have left C. couldn’t have left D. needn’t leave 10. Children＿＿＿＿＿＿＿＿in public very often. A. should be praised B. shouldn’t have praised C. shouldn’t have be en praised D. shouldn’t be praised 11. Let’s clean the classroom, ＿＿＿＿＿＿＿?
虚拟语气中的含蓄条件句常见用法总结
虚拟语气中的含蓄条件句常见用法 先看一道高考题： ____ more attention，the trees could have grown better． A．Given B．To give C．Giving D．Having given （答案是A） 句中"．．．the trees could have grown better"是一个表达虚拟语气的句子。题中要求选择的是如何表达假设条件的形式。如果我们把这个句子用另一种形式"If they had been given more attentio n ，the trees could have grown better．"来表示，就不难理解了。很多情况下，在表示假设的虚拟语气中，有时假设的条件并不以条件从句的形式表达，而是通过上下文或句中内在的逻辑关系，或用其它形式表达出来，我们称之为"含蓄条件句"。 含蓄条件句主要通过名词、连接词、不定式、分词、动名词短语、介词短语及分句来暗示。这些表达形式在句中实际起着虚拟条件从句的作用。现分述如下： 一、介词短语 常用来表示虚拟条件的介词有with，without，in，under，but for等等，它们表示的虚拟条件都可以被if从句替换。 （1）without，with without表示否定的条件，意为if．．．not；with与without意义相反，表示肯定的条件。如：Without air，there would be no living things．（without air ＝if there were no air）没有空气，便没有生物。 With her help（＝If I had her help），I would do the experiment well．假如有她帮助，我就可以把这个实验做好。 （2）under Under the leadership of a less experienced person，the experiment would have failed．（u nder．．．＝If there had been the leadership of a less experienced person）假设在一个缺少经验的人领导下进行实验，实验准会失败。 （3）in I would have lost my head in that position．（in that position ＝if I had been in that po sition）我处在那种情况下，是会丧失理智的。 （4）but for
英语虚拟语气练习题20篇及解析
英语虚拟语气练习题20篇及解析 一、初中英语虚拟语气 1．If I _____ you, I _____ late for school this morning. A．were, wouldn’t be B．were, wouldn’t C．was, won’t be D．am, will 【答案】A 【解析】 试题分析；句意：如果我是你，今天早晨我上学就不会迟到。与现在事实相反，故从句用过去时态，主语用过去将来时态。选项B缺少谓语动词。故选A。 考点：if引导的条件状语从句 点评：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并不是事实，而是一种假设、愿望、怀疑或推测。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。 1、与现在事实相反 若与现在事实相反，条件从句的谓语用过去式（be通常用were），主句谓语用“should （would, could, might）+动词原形” 2、与过去事实相反 若与过去事实相反，条件从句的谓语用过去完成时（had+过去分词），主句谓语用“should （would, could, might）+have+过去分词” 3、与将来事实相反 若与将来事实相反，条件从句的谓语用过去式（be通常用were），主句谓语用“should （would, could, might）+动词原形”。 2．--- If I_______ one million dollars, I would give it to medical research. ---If I _______ you, I would give it to charity. A．will have, am B．would have, was C．had, were D．have, is 【答案】C 【解析】考察虚拟语气。第一空，虚拟语气，与现在相反，用过去时。第二空，虚拟语气，与现在相反，用过去时，be动词用were。故选C 3．--What would you do if you ____ a million dollars? --I’d give it to the charity A．win B．won C．will win D．is to win 【答案】B 【解析】 试题分析：句意：如果你赢了一百万美元，你要做什么？——我会把它捐给慈善机构。结合语境可知条件从句中描述的是与将来相反的事实，故用一般过去时态，选B。 考点：if引导的条件状语从句
虚拟语气详解(自用版)
虚拟语气详解（自用版） 虚拟语气是一项语法难点，为了让学员们便于理解与记忆，我们把虚拟语气分成三大块来讨论： 1．名词从句中的虚拟语气标志词+should+动词原形 2．条件从句中的虚拟语气①三种基本态②倒装虚拟句③混时虚拟句④含蓄虚拟句⑤跳层虚拟句 3．其它情形中的虚拟语气（wish/would rather/It’s high time…/If only…/lest） 一．三种基本形态（1） 表虚拟的时间if从句谓语形式主句谓语形式 现在：did / were would (should, might, could)+do 过去：had done/ had been would (should/might/could)+have done(been) 将来：were to/ should+do would (should, might, could)+do 三种基本形态（2）（这是基础，建议牢记下面的例句，争取能脱口而出） 与现在事实相反：If I had enough money, I would buy a book. 与过去事实相反：If I had had enough money, I would have bought a book. 与将来事实相反：If I were to have enough money, I would buy a book. If I should have enough money, I would buy a book. 二、倒装虚拟句（只能与过去/将来事实相反，省去if，只有三种倒装形式） Had I had enough money, I would have bought a book. Were I to have enough money, I would buy a book. Should I have enough money, I would buy a book. 三、混合时间虚拟语气（主要是抓住时间状语） (对过去事实虚拟+对现在事实虚拟) If I had studied English at school, I could read the English novel now. (对现在事实虚拟+对过去事实虚拟) If she were not so careless, she wouldn’t have made such a mistake. 四、含蓄虚拟句（在四级考试中目前还未出现此考点，但在阅读中常见） 3. 虚拟语气用在主语从句中。在句型“It is important (necessar y, strange, natural等) that...” 中，that 后面的从句中的谓语动词用(should) + 动词原形。 It's necessary that we should have a walk now. 我们现在有必要出去散散步。 What would I have done without you? But for their help, I would not have finished the task. But that the doctor arrived on time that day, they would have been dead.
【英语】 虚拟语气选择题练习
【英语】虚拟语气选择题练习 一、初中英语虚拟语气 1． ---Tom is always making so many mistakes in his English exercises! --- Yeah. If he ________ more careful, he ________ fewer mistakes. A．was; will make B．is; would make C．were; will make D．were; would make 【答案】D 【解析】 试题分析：句意：汤姆总是在英语练习中犯那么多的错误！—如果他能更细心一些，他就会犯更少的错误。 表示与现在事实相反的假设，If+主语+动词过去式（be动词用were），主语+would/should/might/could+动词原形。根据题意及句型，故选D。 考点：考查虚拟语气的用法。 2．The air pollution is worse and worse. The government suggests that people ____ to work by subway or by bus. A．go B．goes C．going D．to go 【答案】A 【解析】 【详解】 句意：空气污染越来越糟糕。政府建议人们乘地铁或者乘公交车去上班。 考查谓语动词。A. go 去；B. goes 去；C. going 在去；D. to go 为了去。这是一个that引导的宾语从句，suggest后跟的宾语从句应用虚拟语气（should）do结构，should可省略。故选A。 3．If I _____ you, I _____ late for school this morning. A．were, wouldn’t be B．were, wouldn’t C．was, won’t be D．am, will 【答案】A 【解析】 试题分析；句意：如果我是你，今天早晨我上学就不会迟到。与现在事实相反，故从句用过去时态，主语用过去将来时态。选项B缺少谓语动词。故选A。 考点：if引导的条件状语从句 点评：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并不是事实，而是一种假设、愿望、怀疑或推测。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，
If条件句和虚拟语气
If条件句和虚拟语气 if 条件句和虚拟语气 包含条件从句的句子叫条件句。条件句有两类：一类是真实条件句（First conditional）,一类是非真实条件句(Second Conditional)。如果假设的情况是有可能发生的，就是真实条件句；如果是纯属假设情况或是不可能发生或可能性不大的情况，则是非真实条件句。 1.真实条件句,可用if和unless引导 1）一个动作发生，另一动作随之发生 I’ll lend Peter the money if he needs it. If he has time, he will come. If he doesn’t come before 12 o’clock, we won’t wait for him. I shall go tomorrow unless it rains. I won’t go to her party unless I am invited. 2）表示命令、建议或请求,这时的if等于when If she telephones, let me know. Give my love to Lawrence if you see him. 3)will用于if从句中，不表示将来，而表示愿意或坚持的意思 If you will come this way, I’ll take you to the manager’s office. If you will get drunk every night, it’s not surprising you feel ill. 2. 非真实条件句
非真实条件句包括虚拟条件句和错综时间条件句 1）虚拟条件句分三类，其结构列表如下： If I become president, I’ll make all of my people live a happy life. (竞选总统的候选人这样说) If I became president, I’d make all of my people live a happy life. (一个小学生这样说) l 以下与现在事实相反 He wouldn’t feel so cold if he were indoors. I am sorry I am very busy just now. If I hade time, I would certainly go to the movie with you. l 以下与过去事实相反 If you had come here a little earlier, you would have met the pop star. I don’t know what would have happened if Jane hadn’t been able to speak Japanese. l 以下推测将来 If I were to do the work, I should do it in a different way. If it should rain again, what else could we do? 2) 错综时间条件句
非常详细的虚拟语气讲解资料
虚拟语气 第一部分：语气的定义和种类 1 语气(mood) 语气是动词的一种形式，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 ⑴、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： ①There are two sides to every question.每个问题都有两个方面。 ②Were you busy all day yesterday?昨天一整天你都很忙吗？ ③How good a teacher she is!她是多好的一位老师啊！ ⑵、祈使语气：表示说话人对对方的请求或命令。如： ①Never be late again!再也不要迟到了。 ②Don’t forget to turn off the light.别忘了关灯。 ⑶、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： ①If 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。 ②I wish I could pass the examination.我希望我能通过考试。 ③May you succeed!祝您成功！ 虚拟语气在语法里算得上是个难点。让我们就从最简单的开始吧。 第二部分：简单句中的虚拟语气 一、情态动词的过去式用于现在时态时，表示说话人的谦虚、客气、有礼貌、或委婉的语气，常用于日常会话中。如： ⑴.Would you be kind enough to show me the way to the post office?请你告诉我去邮局的路好吗？ ⑵.It would be better for you not to stay up too late.你最好别熬夜到很晚。 二、表祝愿。 1、常用“may+动词原形”表示祝愿，但愿，此时may须置于句首（多用于正式文体中）。 ⑴、May good luck be yours!祝你好运！ ⑵、May you be happy!祝你快乐！ ⑶、May you do even better!祝你取得更大成就！ ⑷、May you have a good time. 祝愿你玩的痛快。 ⑸、May the friendship between us last long. 祝愿我们的友情天长地久。 ⑹、May you be happy. (注意那个be ) 祝你幸福。 2、用动词原形。例如： (1).Long live the people! 人民万岁！ (2).“God bless you,”said the priest.牧师说：“愿上帝保佑你！” (3).Have a good journey! 祝愿你旅途愉快！ 三、表示强烈愿望。（该类型虚拟语气谓语仅用动词原形，第三人称单数也不加“s”） (1).God save me． (2).Heaven help us． 四、表命令 1.命令虚拟语气只能用在第二人称(you)，而且通常省略主语(也就是you)。 2.句子尾通常加上感叹号：！ 3.虚拟语气动词用一般现在时态(Simple Present)，如：work, be , go 4.否定形式的命令语气，可用助动词do，加上not。 (1). Work ! (2). Work harder ! (3). Be more alert ! (虚拟语气动词Be) (4). You go out ! (5). Do not work so hard. (do not 表示否定的虚拟语气) (6). Don't be afraid. (口语中常用don't 代替do not) 五、在一些习惯表达中。如： (1).You’d better set off now.你最好现在就出发。 (2).I’d rather not tell you the secret.我情愿不告诉你这个秘密。 第三部分：名词性从句中的虚拟语气 第一节：宾语从句(Subordinate Clause)中的虚拟语气 一、在动词wish后的宾语从句中的虚拟语气 在动词wish后的宾语从句中的虚拟语气，常省去宾语从句的引导词that。 一）、对现在情况的虚拟（与现在的事实相反）： 从句用过去式或过去进行式(时间上是同时的)。其句子结构为：宾语从句的谓语be和were(was)，实义动词用过去式。例： 1. I wish (that可省略,下同)I knew the answer to the question.(wish, 动词过去式knew)我希望知道这个答案。(事实上是不知道) 2. I wish it were spring in my hometown all the year around.(wish, were)但愿我的家乡四季如春。(事实上不可能) 3. I wish I were a bird.(wish, were)但愿我是只小鸟。(事实上不可能) 4. When she was at the party, she wished she were at home.(wished,过去虚拟动词were)(事实上并不在家) 5. Now that he is in China, he wishes he understood Chinese.(wishes,过去虚拟动词understood) 现在他在中国，他希望能懂得中文。(事实上并不懂) 6. When we begin the trip, they will wish they were with us.(will wish,过去虚拟动词were)(事实上并不和我们在一起)
高中英语虚拟语气练习题及 答案
用所给动词的正确形式填空，注意使用合适的情态动词助动词 1. If I _____ him yesterday I _____ him about it. (see, ask) 2. What do you think would happen if there __ _ no light during the days? (be) 3. But for your help, I couldn’t _____ the place. (find) 4. If her lawyer _____ here last Sunday, he _____ her from going. (be, prevent) 5. If it had not been for the liberation, no changes _____ place in my hometown. (take) 6. If Miss Green _____ late tomorrow, who would take her place? (come) 7. It seems as if it ____ already summer now. (be) 8. I wish I _____ him the day before yesterday. (see) 9. I made the suggestion that they _____ the plan they had made. (stick) 10. It is suggested that a study plan _____ right now. (make) 11. They required that we _____ them get in the crops. (help) 12. It was ordered that no smoking _____ in the library, which made the smokers unhappy. (allow) 13.I’d rather Tom _____ tomorrow. (come) 14.It is about time you ____ the medicine, sir. (take) 15.If there _____ no electricity in the future, our life _____ a lot. (be, change) 16. What would have happened if you her child? (not help) 17. It is strange that he so. (think) 18. I wish I my uncle yesterday. (meet) 19. Galileo insisted that the earth round the sun. (move) 20. I was very busy yesterday, otherwise I to the meeting. (come) 21. Supposing the weather bad, where would they go? (be) 22. If only I to my parents’ advice! (listen) 23. I to stay there for one more week, but I changed my mind. (hope) 24. His silence at the meeting suggested that he to your plan. (agree) 25. Li Ling acted that way as though he a foreigner. (be)
虚拟语气用法总结及详细解析
虚拟语气用法 英语中的语气分为陈述语气、祈使语气、虚拟语气、疑问语气和感叹语气五类。 1、表示动作或状态是客观存在的、确定的或符合事实的，用于陈述句、疑问句和某些感叹句中。 China is an Asian country. (肯定句) How interesting my stay in China has been! (感叹句) 2、祈使句表示说话人对对方的请求、警告，建议或命令。如: Please come over here. 请到这边来。 Watch your steps! 当心!(走路) 3、虚拟语气表示说话者做出的假设而非事实，或难以实现的情况，甚至表达彻底相反的概念。此外，如需表达主观愿望或某种强烈的感情时，也可用虚拟语气。虚拟语气是由句中的谓语动词的特殊形式表示出来的。如: If I were a bird，I would be able to fly in the air. 如果我是一只小鸟，我就能在空中飞行。 I wish I could pass the examination. 我希望我能通过考试。
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。 If she were to be here next Monday, I would tell her about the matter. 如果她下周一来这儿的话，我就会告诉她这件事的始末。 4、有时，虚拟条件句中，结果主句和条件从句的谓语动作若不是同时发生时，虚拟语气的形式应作相应的调整。这种条件句叫错综条件句。 ①从句的动作与过去事实相反，而主句的动作与现在或现在正在发生的事实不符。 If I had worked hard at school, I would be an engineer, too.如果我在学校学习刻苦的话，我现在也会成为一个工程师了 If they had informed us, we would not come here now. 如果他们通知过我们的话，我们现在就不会来这里了。 ②从句的动作与现在事实相反，而主句的动作与过去事实不符。 If he were free today, we would have sent him to Beijing. 如果他今天有空的话，我们会已经派他去北京了。 If he knew her, he would have greeted her. 要是他认识她的话，他肯定会去问候她了。 5、当虚拟条件句的谓语动词含有were, should, had时，if可以省略，这时条件从句要用倒装语序，即把were, should, had等词置于句首，这种多用于书面语。 Should he agree to go there, we would send him there.要是他答应去的话，我们就派他去。 Were she here, she would agree with us.如果她在这儿的话，她会同意我们的。 Had he learnt about computers, we would have hired him to work here. 如果他懂一些电脑知识的话，我们已经聘用他来这里工作了。 【注意】 若条件从句为否定句，否定词not应置于主语之后，而不能与were，should，had 等缩略成Weren't，Shouldn't，Hadn't而置于句首。 Had it not been for the bad weather we would have arrived on time. 若不是天气坏，我们就准时到达了。 ②有时省略if后提前的had不是助动词: Had I time，I would come. 假若我有时间，我会来的。(=If I had time…) 6、非真实条件句中的条件从句有时不表达出来，暗含在副词、介词短语、上下文或其他方式表示出来，这种句子叫做含蓄条件句。 ①将条件会暗含在介词短语中，如without…, but for…,otherwise（要不是因为）等 But for his help, we would be working now. (要不是他的帮助，我们还会在工作呢。