英语四六级虚拟语气讲解(语法及例题)第二部分
英语四级考试中的虚拟语气
英语四级考试中的虚拟语气英语四级考试中的虚拟语气虚拟语气在宾语从句中的用法是一个常见的考点，我们着重讲一下宾语从句常使用虚拟语气的几类特殊动词，以及这些动词的用法、构成虚拟语气的用法等。
下面是店铺为大家带来的英语四级考试中的虚拟语气，欢迎阅读。
一、何谓虚拟?在英语中，语气(mood)和时态，语态一样，都是谓语动词的一种形式。
表明说话的目的和意图，虚拟语气即表示说话人主观愿望或纯假设情况，动词需用特殊形式。
例如If I were a boy。
其中谓语动词用were，而不是am, shall, was, have等，是因为说话人为女士，而“我是男人”仅是其假设的语气，故用了一个在现实情况中绝不可能用到的were来表达这一虚拟的情况。
通过在I的后面加were这一词，能得知这是虚拟假设出来的情况。
常见的虚拟有两种：1. 表示非真实假设情况：If If I had left sooner, I could have caught the train。
如果早点出发，我就能赶上火车了。
(但我事实上已经错过了，对过去的假设虚拟)He talks so loud as if I were deaf。
他说话声太响，就像我聋了一样。
(但事实我没聋，对现在的假设虚拟)这种情况虚拟时，只需将谓语动词变本身的时态再变过去。
第一句话中的虚拟，本身为过去时，因此再变过去，即过去完成时。
left变为had left, could catch变为could have caught。
第二句话中，as if I am deaf，需要对现在假设，因此变为as if I were a deaf。
(不用I was deaf，避免与真实情况过去式混淆)类似表示非真实情况的`词还有wish希望， suppose假设， would rather宁愿， but for要不是等。
2. 表示建议、命令、要求等主观意愿：He suggested that a petition (should) be drawn up。
虚拟语气四级讲解
Subjunctive Mood(虚拟语气)I 、In Conditional Sentences (用于条件句中)II 、In the That-Clauses (用于that 从句中)III 、In the Clauses and Constructions (用于从句和结构中)I. In Conditional Sentences (用于条件句中)或could ，第一人称还 可用should ，但美国英语都用would 。
如果条件句的谓语中含有were, had 或should 时，有时可省略if 而用把were, had 或 should 放到主语之前的倒装句。
现分别举例如下：1. 与现在事实相反 If I knew French, I would read the book in the original. If I were (Were I) in your position I would tell her the truth.2. 与过去事实相反 If you had (Had you) come a few minutes earlier, you would have caught the train.3. 与将来事实相反或表示推测 If he came tomorrow, I might have time to see him. If it were (Were it) to rain next Sunday, the match would be postponed . If we should (Should we) fail again, we wouldn't lose courage.虚拟语气（一）-- 虚拟语气在条件状语从句中的应用虚拟语气(Subjunctive Mood)这一语法项目几乎是四、六级必考的内容，也是各类英语考试中心测试的重点之一。
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。
英语四级语法 虚拟语气
虚拟语气一．一般虚拟条件句(1) 与现在事实相反——If I were you, I wouldn’t worry.——If I had the book at hand, I would read the passage to you.那么，虚拟语气现在时的句型为：从句：If + 主语＋动词过去式(be 变were) +…主句：主语＋would (should ,could ,might ) + 动词原形＋…(2) 与过去事实相反——If you had gone to last night’s games, you would have met him.——If the policeman had arrived earlier, he would have seen the accident.那么，虚拟语气过去时的结构是：从句：If＋主语＋过去完成时…主句：主语＋should (或would,could,might) + 现在完成时…(3) 与将来事实相反——If he should come tomorrow, I would give him the dictionary he needs.——If Mr. Li were to do the experiment tomorrow, he might read the instructions carefully.那么虚拟语气将来时的句型是：从句：If+主语＋should (或were to )+动词原形＋…主句：同虚拟语气现在时的主句结构。
练习：1.I f this report were more accurate, it __________ an invaluable document.A.wereB.had beenC.will beD.would be(D)2.I _______ in trouble if the police had stopped me.A.wereB.would have beenC.would beD.had been(B)3.W hat would you do if war _________ out.A.breaksB.could breakC.had broken outD. were to break(D)二、在if引导的虚拟条件句中，若有were, had, should，可省去if,将were, had, should提到主语前，形成倒装。
英语四级高级语法讲解：虚拟语气
英语四级高级语法讲解：虚拟语气虚拟语气是说话者用来表示假设，或难以实现的情况，而非客观存在的事实，所陈述的是一个条件，不一定是事实，甚至完全与事实相反。
下面是作者整理的英语四级高级语法讲解：虚拟语气，欢迎大家阅读学习。
引导的虚拟语气2.倒装形式Were I you(=if I were you),I would get up early in the morning.Had you arrived at the station ten minutes earlier yesterday(=If you had arrived…),you could have caught the train.Should it rain(=If it should rain),the crops would be saved.It is time that ...Would rather that.....(1)I would rather he came tomorrow than today.(2)John would rather that she had not gone to the party yesterday evening.(3)I would rather everything hadn t happened in the past.“It is(was)+形容词(或过去分词)+that……”结构中的虚拟语气is necessary that we(should 可省略,下同)have a walk now.was necessary that we(should) make everything ready ahead of time.is required that nobody(should) smoke here.is important that every pupil(should) be able to understand the rule of school.练习’ll be busy this he ___ free,he ___ to the cinema with you.to be; might go going to be; will gobe; might have gone ; will goEdison died,it was proposed that the American people _____ all power in their homes,streets,and factories for several minutes in honor of this great man.off offturn off turned offI known her name,_____.does she know mine? where does she live?would have invited her to lunch would be beautiful’d rather you ______ by train,because I cant bear the idea of your being in an airplane in such bad weather.go gogonevictim ________(本来会有机会活下来) if he had been taken to hospital in time.would have a chance to survive(翻译)professor required that ________(我们交研究报告)。
大学英语四六级考试虚拟语气详解资料(二)
洛基英语，中国在线英语教育领导品牌名词性从句中的虚拟语气第一节：宾语从句(Subordinate Clasue)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)二)、对过去情况的虚拟(和过去的事实相反)：用wish表示对过去事情的遗憾。
其句子结构为：宾语从句的谓语用过去完成时，或would, could, might+现在完成时。
虚拟语气语法讲解与习题(汇编)
虚拟语气一．语气的分类：二．虚拟语气的用法：（一）虚拟语气在if条件句中的用法：---If I were you, I would give it up. (与现在事实相反)---If I had taken his advice, I would not have made such a mistake. (与过去事实相反)---If she came/should come/were to come, I could ask her for help. (与将来事实相反)2．特殊用法：①错综时间虚拟条件句：条件从句与主句所指时间不一致，主从句的谓语动词要根据假设的时间来定。
---If you had followed the doctor’s advice, you would be much better now.②if条件句虚拟倒装：可以把if从句中的should, were, had置于句首，省略if构成倒装。
---Were I you, I would give it up.---Had I taken his advice, I would not have made such a mistake.---Should she come, I could ask her for help.③含蓄虚拟条件句：有时假设的情况并不以if引导的条件从句表示出来，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, otherwise, or, but等。
---Without/But for your help, I could not have succeeded.---I should have returned the book last week, but I was too busy. （but后为真实情况）---He was ill, otherwise/or he would have helped us. （otherwise/or前为真实情况）④特殊的if句虚拟：If it were (had been) not for…“要不是…”---If it were not for peace, we could not be living a happy life.---If it had not been for your help, I would have failed.（二）虚拟语气在名词性从句中的用法：1．一些表示坚持，命令，建议，要求的词用于名词性从句中时从句的谓语动词用虚拟（一坚持，二命令，三建议，四要求）---Our teacher suggested that we (should) study hard. (宾语从句)---That we (should) study hard was our teacher’s suggestion. (主语从句)---It was suggested that we (should) study hard. (主语从句)---Our teacher’s suggestion was that we (should) study hard. (表语从句)---Our teacher gave us a suggestion that we (should) study hard. (同位语从句)★suggest表示“暗示”，insist表示“坚持说”时不用虚拟。
虚拟语气用法讲解及练习
虚拟语气用法归纳英语的动词一般可带有三种不同的语气：陈述语气，祈使语气和虚拟语气。
不同的语气用动词的不同形式（或句法形式）来表示。
一、虚拟条件句条件句有两类：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，就是真实条件句，谓语用陈述语气。
If you don’t work hard, you will fail.如果你不努力，就会失败。
If it is fine tomorrow, we will go for a picnic.如果明天天气好，我们就去野餐。
如果假设的情况过去、现在、将来都不存在，或者可能性极小，则为虚拟语气虚拟条件句和对应主句的动词形式列表：1.与现在事实相反的虚拟What would you do if you won the lottery?假如你中了彩票，你会做什么？If I were you, I would seize the chance to go abroad. 如果我是你，我会抓住这次出国的机会。
If I had a lot of money now, I would travel around the world.假如我现在有很多钱，我会环游世界，2.与过去事实相反的虚拟If you had been here yesterday, you would have seen her.如果昨天你在这里，就会见到她了。
If he had driven more carefully, he would not have had the car accident yesterday.如果他小心驾驶的话，昨天就不会出事故了。
3. 与将来事实相反的虚拟If it were to rain/should rain/rained tomorrow, our plan would be put off.假如明天下雨，我们的计划才可能推迟。
（下雨的可能性很小）If we were to picnic, we would not be able to help.如果到时候我们去野餐，就没办法帮忙了。
虚拟语气总结附练习及答案
虚拟语气简介虚拟语气用来表示说话人的主观愿望或假想，而不表示客观存在的事实，所说的是一个条件，不一定是事实，或与事实相反。
虚拟语气通过谓语动词的特殊形式来表示。
英语中的语气分为陈述语气、祈使语气、虚拟语气三类。
在表示虚假的、与事实相反的或难以实现的情况时用虚拟语气，表示主观愿望或某种强烈情感时，也用虚拟语气。
即当一个人说话时欲强调其所说的话是基于自己的主观想法，愿望，假想，猜测，怀疑或建议，而不是根据客观实际，就用虚拟语气。
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.如果我还有上学的机会，我会更加努力学习。
If you had come earlier, you would catch the bus.→Had you come 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。
虚拟语气讲解(整理)
（3）虚拟语气在 在主语从句中
A.在句型 “It is important (necessary, strange, natural) that .... ” 中，that 后面的从句中的谓语动词 用： should + 动词原形
1. 我们有必要出去散散步。 It’s necessary that we should have a walk now.
2.用于表示命令、建议、要求等一类词后面的宾语从句。 insist, order, command, suggest, advise, propose, require, request, demand, desire etc.
We suggested that the meeting (should) be put off.
7. It is of the utmost importance that you ______ here on time. a. be b. shall be c. are to be d. must be
三、虚拟语气在其他从句中
1. It is (high / about ) time that…从句中的谓 语动词用过去式或should＋动词原形，should 不能省略． It is high time that you went / should go to school.
I would rather you told me the truth. I would rather you had gone there last Sunday.
4. as if ( as though) 看起来 常用虚拟形式，即 表示与现在事实相反，用过去式；与过去事实相反 用过去完成式 (had done).
虚拟语气详细讲解及经典习题 附答案
虚拟语气一、考点聚焦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假设，条件状语从句中的谓语动词用“过去式（be动词的过去式用were）”，而主句中的谓语动词用“would / should/ could / might + 动词原形”。
如：If I were a boy, I would join the army.If the had time, she should go with you.（2）表示与过去的事实相反，条件状语从句中的谓语动词用过去完成时，主句中的谓语动词则用“would / should / might / could + have +过去分词”。
如：If he had taken my advice, he would have succeeded in the competition.（3）表示与将来事实相反，条件状语从句中的谓语动词一般过去时或should(were to) + 动词原形，而主句中的谓语动词则用would / should/could might + 动词原形。
如；If it were to rain tomorrow, the football match would be put off.（4）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，动词的形式要根据它所表示的时间作相应调整。
如：If they had worked hard, they would be very tired.(从句说的是过去，主句指的是现在)Were I a boy, I would join the army.Had he taken my advice, he would have succeeded.Were it not for the expense, I would go to Britain.2、虚拟语气用于名词性从句（1）虚拟语气在宾语从句中的运用。
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英语四六级虚拟语气讲解（语法及例题）第二部分主语从句中的虚拟语气一、“It is (was)+形容词(或过去分词)+that……”结构中的虚拟语气在形如“It is (was)+形容词(或过去分词)+that……”结构中，使用某些表示愿望、建议、请求、命令、可能、适当、较好、迫切、紧近、重要等形容词后的主语从句的谓语也用虚拟语气。
其表达形式为should +动词原形或省略should直接用动词原形(美国英语中省去should) 常用的形容词：* natural (自然的), appropriate (适当的),advisable (合适的), preferable (更可取的), better (更好的)* necessary (必须的), important (重要的), imperative (急需的), urgent (急迫的), essential (本质的), vital (必不可少的)* probable (很可能的), possible (可能的)* desirable (极好的)advisable(合理的)，compulsory(必须的)，crucial(紧急的)，desirable(理想的)，essential(必要的)，imperative(迫切的)，incredible(惊人的)，necessary(必要的)，possible(可能的)，strange(奇怪的)，urgent(紧迫的)。
常用的过去分词(Past Participle):* required (需要的), demanded (要求), requested (被请求的), desired (要求)* suggested (建议), recommended (推荐)* orderd (命令)1. It is necessary that we (should 可省略,下同)have a walk now.(necessary, should + have) (表示有需要去散步)2.It was necessary that we (should) make everything ready ahead of time.(necessary, should + make) (表示有必要事先做好准备)3. It is required that nobody (should) smoke here.(required, should + smoke) (表示要求不要在此抽烟)4. It is important that every pupil (should) be able to understand therule of school.(important, should + be) (表示重要的是学生都能了解校规)5. It's important that we (should) take good care of the patient.(important, should +take) (表示重要的是照顾好病人)6. It is natural that she should do so. (形容词natural, should+动词原形do)7.It is essential that these application forms be sent back as early as possible.这些申请表应尽早地寄回，这是很重要的。
8.It is vital that enough money be collected to fund the project.重要的是募集足够的钱，为这个项目提供资金。
9.It is desired that we(should)get everything ready this evening.希望我们今晚一切都准备就绪。
注：在上述所列形容词后面用that引出的宾语从句中，谓语动词也要用虚拟语气。
10.I don't think it advisable that Tom be assigned to the job since he has noexperience.汤姆缺乏经验，指派他做这项工作我认为是不恰当的。
二、在It is +名词+that…的主语从句中的虚拟语气在It is +名词+that的主语从句中，常用虚拟语气，表示建议、命令、请求、道歉、怀疑、惊奇等。
这类名词有：advice ，decision ，desire ，demand ，idea，motion ，order，pity ，preference ，proposal，recommendation ，requirement，resolution，shame，suggestion，surprise，wish，wonder等。
⑴、It is my proposal that he be sent to study further abroad.我建议派他去国外进一步学习。
虚拟语气用在表语从句或同位语从句中当某些表示建议、请求、命令等主观意向的名词作主语时，其后的表语从句或同位语从句需用虚拟语气，其表达形式为should +动词原形或直接用动词原形。
这类名词常见的有：demand (要求), desire (请求),requirment (要求)advice (劝告), recommendation (建议),suggestion (建议)order (命令)necessity (必要地), preference (优先)proposal (计划), plan (计划), idea (办法)，recommendation以及plan，idea，resolution等。
We are all for your proposal that the discussion be put off.我们都赞成你提出的将讨论延期的建议。
The suggestion that the mayor present the prizes was accepted byeveryone.由市长颁发奖金的建议被每个人接受。
⑴、The advice is that we (should 可省略，下同) leave at once.(名词advice，should + leave) (表示加以劝告)⑵、My idea is that we (should) get more people to attend theconference.(idea, should + get) (表示做出主意)⑶、I make a proposal that we (should) hold a meeting next week.(proposal, should + hold) (表示做出计划)⑷、The judge assented to the suggestion that .[A]both of the criminals will soon be set freedom[B]some of the criminals there are of guilt only[C]the girl was to be paroled in the custody of a welfare society[D]the prisoner be sentenced to death条件句中的虚拟语气第一节：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 time , I will help you with this work.如果我有时间会帮助你做此工作的。
⑵、As long as I say anything wrong, you must point it out.只要我说了什么错话，你一定要指出来。
⑶、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 would 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。
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.4、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。