if从句的虚拟语气 if在虚拟语气中的省略用法 越详细越好 马上给分 谢谢~~

if在虚拟语气中的省略用法 越详细越好 马上给分 谢谢~~  

if在虚拟语气中的省略用法 越详细越好 马上给分 谢谢~~

if引导的虚拟条件句中如果有should,were,had时，可以把should,were,had提前，if省略，句子倒装。

英语虚拟语气语法讲解越详细越好

虚拟语气
一． 概念：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。
二．真实条件句用陈述语气
1．真实条件句表示的假想是真实的或有可能性
2．句型：条件从句（一般现在时）+主句（shall/will+动词原形）
3.注意：当表示真理时，主句谓语动词不用shall/will+动词原形，而直接用一般现在时
三．虚拟语气用于非真实条件句中
1．表示同现在事实相反的假想，可以表示现在，过去或将来的情况
2．表示同过去事实相反的假想
句型：条件从句（过去完成时had done）+主句（should/would have+过去分词）
3．表示对将来的假想
句型：①条件从句为一般过去式；主句为should+动词原形
②条件从句为were+动词原形；主句为would
③条件从句为should+动词原形; 主句为would
4.表示错综复杂的条件
有时，主句与从句的动作发生在不同的时间，一个发生在过去，一个发生在现在。
5．虚拟条件句的倒装
虚拟条件句的从句部分含有were, should, 或had时, 可省略if，再把were, should或had 移到从句的句首，实行倒装。
6．特殊的虚拟语气词should
1）在主语从句中的应用
It is demanded / necessary / a pity + that…等结构的主语从句，谓语动词用should 加动词原形，should 可省略。
It is 可用的词有三类 that （should）do
suggested, ordered, required, proposed, demanded, requested, insisted等
important, necessary, natural, imperative, strange等
a pity, a shame, no wonder等
2）在宾语从句中的应用
在表示命令、建议、要求等一类动词后面的从句中，像order, suggest, propose, require, demand, request, insist, mand, insist + （should） do等。例如：
I suggest that we （should） hold a meeting next week. 我建议下周召开个会议。
He insisted that he （should ） be sent there.他要求被派到那儿去。
注意：如suggest, insist不表示"建议" 或"坚持要某人做某事时"，即它们用于其本意"暗示、表明"、"坚持认为"时，宾语从句用陈述语气。
3）在表语从句，同位语从句中的应用
suggestion, proposal, idea, plan, order, advice等名词后面的表语从句、同位语从句中要用虚拟语气，即（should）+动词原形。
wish的用法
1）wish后面的从句，表示与事实相反的情况，或表示将来不太可能实现的愿望。其宾语从句的动词形式为：
主句 从句
从句动作先于主句动词动作（be的过去式为 were） 现在时 过去时
从句动作与主句动作同时发生（had + 过去分词） 过去时 过去完成时
将来不大可能实现的愿望 将来时 would/could +动词原形
8． 比较if only与only if
only if表示"只有"；if only则表示"如果……就好了"。If only也可用于陈述语气。
9．It is （high） time that
It is （high） time that 后面的从句谓语动词要用过去式或用should加动词原形，但should不可省略。
10.need "不必做"和"本不必做"
didn't need to do表示过去不必做某事, 事实上也没做。
needn't have done表示过去不必做某事, 但事实上做了。
相关练习题
1.（B）The volleyball match will be put off if it ___.
A. will rain
B. rains
C. rained
D. is rained
考点：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，主句谓语动词不用shall （will） +动词原形，而直接用一般现在时的动词形式
1.（C）_____ to do the work, I should do it some other day.
A. If were I
B. I were
C. Were I
D. Was I
考点：在虚拟条件状语中如果有were, should, had这三个词，通常将if省略，主语提前, 变成 were, should, had +主语的形式。但要注意，在虚拟条件状语从句中，省略连词的倒装形式的句首不能用动词的缩略形式。如我们可说 Were I not to do, 而不能说 Weren't I to do。
2.（D）There was plenty of time. She ___.
A. mustn't have hurried
B. couldn't have hurried
C. must not hurry
D. needn't have hurried
考点：needn't have done. 意为"本不必"，即已经做了某事，而时实际上不必要。
Mustn't have done 用法不正确，对过去发生的事情进行否定性推断应为couldn't have done, "不可能已经"。 must not do 不可以（用于一般现在时）。

remend虚拟语气中that可以省略

remand是只在表“劝告,建议”时后从句用虚拟语气,还是表任何意思时其后从句都用虚拟语气?remand后的从句用虚拟语气是否只能用“（should）+do”形式?补充：1.to tell sb that sth is good or useful,or that sb would be suitable for a particular job,etc.推荐；举荐；介绍 VN sb/sth (to sb) (for/as sth) Can you remend a good hotel?你能推荐一家好的饭店吗?I remend the book to all my students.所有我的学生,我都向他们推荐这本书.She was remended for the post by a colleague.她获得同事推荐到这个岗位.The hotel's new restaurant es highly remended(= a lot of people have praised it).这家酒店的新餐厅得到了人们的普遍赞扬.2.to advise a particular course of action; to advise sb to do sth 劝告；建议 The report remended a 10% pay increase.报告提议工资增加 10%.VN It is dangerous to exceed the remended dose.超过建议使用的剂量会有危险.a remended price of $50 建议售价 50 元 I remend (that) he see a lawyer.我建议他去找个律师.V (that) I remend (that) he should see a lawyer.我建议他去找个律师.British English It is strongly remended that the machines should be checked every year.建议每年一定把机器检修一次.VN (that) We'd remend you to book your flight early.我们建议你早点儿预订航班.VN to inf.He remended reading the book before seeing the movie.他建议先看这本书,再去看这部电影.V -ing 3.to make sb/sth seem attractive or good 使显得吸引人；使受欢迎 VN sb/sth (to sb) This system has much to remend it.这套系统有很多可取之处.以上是google字典中对remend 在表示那一种意思时用虚拟语气?我来回答匿名
笑棠smQL 2014-1

虚拟语气中that都能省略吗

虚拟语气中如果要讲省略，一般说的是名词性从句中的虚拟语气关键词是“命令、建议、推荐、要求”类，后面格式为“should do”，可以省略should。
并没有虚拟语气可以省略that这种提法。
that是个连词，提到可以省略that的时候，都是在宾语从句或定语从句中，才会有这个点。

虚拟语气的详细用法

一、 使用虚拟语气的场合：当要说的话不是事实,或是不可能发生的情况,而是一种愿望、建议或与事实
相反的假设时就使用虚拟语气。
　二、 一般的虚拟语气的句式：If…+主句（=主句+if从句）
　其谓语形式为： If从句主句与过去事实相反had donewould/might/could/should have done与现在事实相反didwould/might/could/should do与将来事实相反（1） did（2） should do（3） were to do would/might/could/should doNote：1、主句中的should只用于主语是第一人称时,would,might,could可用于任何人称,根据意思的需要选用
2、条件从句的动词如果是be,其过去式所有人称无论单、复数都用were　三、含蓄虚拟语气：有时虚拟条件不通过条件从句,而是通过上下文或用介词短语等表示出来,这种句子叫含蓄语气句.如：① The gifts to him would have filled a railway car.
　② I could not have lived through Christmas without giving you a present.
（=I could not have lived through Christmas if I had not given you a present.）　四、虚拟语气的倒装：把引导虚拟语气条件从句的if省略,再把were,had或should提于句首,进行部分倒装.
如：① Had you arrived 5 minutes earlier, you could have seen him off.
（=If you had arrived 5 minutes earlier, you could have seen him off.）
② Were she not so busy, she would e to help us.
（=If she were not so busy, she would e to help us.）
③ Had it not been for Chairman Mao, we labouring people could never have stood up.
(=If it had not been for Chairman Mao, we labouring people could never　have stood up.)　五、虚拟语气的其他用法：
　⑴ suggest,propose,advise,remend,order,insist,require,request,demand等动词后的宾语从句
　及　suggestion,proposal,advice,remendation,order,idea等名词后的表语从句或同位语
　用＂(should)+动原＂的虚拟语气.
　⑵ It is necessary/strange/natural/better/important后的从句用＂(should)+动原＂的虚拟语气.
　⑶ It is time及would rather后的从句用过去时态形式的虚拟语气.
　⑷ wish后的宾从、as if/as though后的从句使用时态降级形式的虚拟语气.
　⑸ even if/even though从句的虚拟方法同于 if从句. 虚拟语气经典句型 关键词： 虚拟语气 0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}">句型1：表示对现在的假设If+were/did/(动词过去式)，主语+would/might/should/could+doIf I were you, I would not be so proud.如果我是你，我不会如此自负。I don't have a cellphone. If I had one, it would be convenient for me to get in touch with others.我没有手机，如果有的话，和别人联络就方便多了。If I were in your position, I would think better of it.如果我处在你现在的境地，我会重新考虑的。0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}">句型2：表示对过去或已经发生事情的虚拟假设If+had done，主语+would/might/should/could+have doneWhat a pity it is that you didn't attend the concert yesterday! If you had attended it, you would have seen the famous singer.真遗憾你昨天没有去听音乐会。如果你去了，你就会见到那位名歌手。Anyone in his position would have done the same.=If anyone had been in his position, he would have done the same.无论谁处在他当时的境地都会像他那样做的。0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}">句型3：表示对将来的假设If+were/did/(动词过去式)/should/were to do，主语+would/might/should/could+doIf we were to panic, we would not be able to give proper first aid.如果我们惊慌的话，我们就不能进行急救了。If it were to rain(=Should it rain=Rained) tomorrow, we would not go for a piic.如果明天下雨的话，我们就不去野炊了。If you shouldn't pass the college entrance examination, what would you do?万一你高考不中，你该怎么办？0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}">句型4：if onlyif only引起的感叹句，相当于“How I wish+宾语从句”，意为“但愿......，要是......就好了”。If only he could e!要是他能来就好了。If only we students didn't have so much homework!要是没有那么多作业该多好！If only I hadn't been so careless in the exam!我当时没有那么粗心就好了！0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}">句型5：要不是......；如果不是......If it were not for ... (=Were it not for ...)If it hadn't been for ... (=Had it not been for ...)If it hadn't been for the determined captain, all the passengers on board wouldn't have been saved.要不是有意志坚定的船长，船上的乘客就不会得救。If it were not for your rich parents, you couldn't live so easy a life.要不是因为你有钱的父母，你的生活不会如此安逸。0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}">句型6：but for, but thatbut for+名词和but that+从句，意为“倘若不是，要不是”，接虚拟语气。But for the Communist Party of China, the People's Republic of Chia couldn't have been founded.=If it hadn't been for the Communist Party of China, the People's Republic of China couldn't have been founded.没有共产党，就没有新中国。But for the air and water, nothing could survive.=If there were not air and water, nothing could survive.没有空气和水，什么都不能存活。She could not have believed it, but that she saw it.若非亲眼所见，她是不会相信的。0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}">句型7在suggest, proplse, insist, demand, require, request, order等表示建议、要求、命令的(动词后接的)名词性从句中需用虚拟语气，基本句型：主语+(should)+动词原形。Mother insisted that John (should) go to bed at 9 o'clock.（宾语从句）Many hospitals remended that we use the letter DR ABC to remember what to do when giving first aid.（宾语从句）It was required that children (should) be sent to school when they reach the age for school.（主语从句）The suggestion that he (should) be invited was rejected.（同位语从句）That is their demand that their wages (should) be increased.（表语从句）0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}">句型8it's necessary/important that sb. should do..., should可以省略With the society developing very fast, it's quite necessary/important that we (should) have a good knowledge of English and puter.随着社会的快速发展，我们有必要精通英语和电脑。It's necessary that John take the exam first.约翰有必要先参加考试。0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}">句型9it's strange/a pity/surprising that sb. should do..., should表示“竟然”It's a pity that she should miss the chance to go abroad.很遗憾她错过了这次出国的机会。It's really surprising that a prophecy (预言) should coincide with the fact so exactly.令人惊讶的是，预言和事实竟然如此巧合。It's strange that he shouldn't pass the exam.奇怪的是他竟然没有通过考试。0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}">句型10：wish+宾语从句，表示不大可能实现的愿望表示现在的愿望：主语+动词过去式；表示过去的愿望：主语+had+过去分词；表示将来的愿望：主语+would(could)+动词原形。How I wish we students had more free time to relax ourselves!I failed in the maths exam. How I wish I hadn't wasted so much time playing.What a pity you can't go to the party. How I wish I could dance with you at the party.0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}">句型11：It's (high/about) time that sb. did/should do ...早就该.....It's time that we took action and did our bits for the AIDS patients.=It's time that we should take action and do our bits for the AIDS patients.我们早就该行动起来,为爱滋病人尽我们的一份力。It's high time that we did something to improve our environment.我们早该为环保做些事情了。0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}">句型12：表示愿望would rather that sb. did ...“宁愿...；更愿意...”，表示现在或将来的愿望；would rather that sb. had done ...“宁愿...；更愿意...”，表示过去的愿望。I'd rather you posted the letter right away.我想让你现在去寄信。I'd rather you were not a celebrated actor. In that case, we could spend more time together.我倒情愿你不是什么名演员，这样我们可以有更多的时间在一起。I'd rather that I hadn't seen her.我情愿没有见到她。0 && image.height>0){if(image.width>=510){this.width=510;this.height=image.height*510/image.width;}}">句型13：as ifas if(though)+主语+did/had done...表示过去的情况用过去完成时，表示现在与将来的情况用过去时。Our head teacher treats us as if we were her own children, so all the students in our class think highly of her.班主任老师对待我们就像对待自己的孩子，因此班里所有的学生都对她有很高的评价。Alan talked about Rome as if he had been there.Alan谈起罗马来就好像他去过似的。All too often, people treat AIDS patients as if they were bad or dangerous.通常情况下，人们对待爱滋病人就好像他们是坏人或高危人群。

虚拟语气中在条件状语从句中的 详细用法

虚拟语气分为：与现在事实相反，与过去事实相反，与将来事实相反
第一种：与现在事实相反,从句用过去时，did或were,主句用would+动词原形
例句:If I were you,I would not study English.
第二种：与过去事实相反，从句用had done，主句是would/could/should have done
例句：If you had e yesterday,you would/should/could have seen her
第三种：与将来事实相反，从句分三种
1、与现在事实相反用法一样
2、were to do
3、should do这里should不可替换，主句用could/would +动词原形
例句
1.If you came tomorrow,you would see me
2.If you were to e tomorrow,you could/would see me
3.If you should e tomorrow ,you could/would see me
这些用法必须是背下来的，没有什么捷径可走，有的时候，阅读里的句子是混杂的，可能主句与过去相反，从句与现在相反，只要熟揹我上面所说的，就能分别取从句和主句，加油吧

虚拟语气中 省略if的用法 if he had known the truth，he would have told to you

Had he known the truth，he would have told to you
请采纳，不懂追问*^__^* 谢谢！

省略if的虚拟语气

是的，你是正确的
比如：
Were I Tom, I would refuse. 如果我是汤姆，我会拒绝。
If he were here, she would agree too.
→Were she here, she would agree too.
假若明天下雨，我们只好推迟这场比赛。
If it should rain tomorrow, we should have to put off the match.
→Should it rain tomorrow, we should have to put off the match.
要是我们当时早点找到他的话，我们就可以救活他。
If we had found him earlier we could have saved his life.
→Had we found him earlier we could have saved his life.

if only在虚拟语气中的具体用法

1．条件句中：
 If it were not for…；If it hadn’t been for…这两种句型表示“要是没有”，相当于but for
If it had not been for the PLA man, he would not be studying English now.
 if…only…（或If only…）表示“要是…就好了”
1．名词性从句：
 demand/suugest/order/insist/propose/request/ask/advise/prefer/mand/desire that…
They demanded that the aggressor troops (should) be withdrawn immediately.
由insist引导的宾语从句可以虚拟也可以不虚拟：
He insisted that he was right.坚持认为
He insisted that we should agree with him.坚持某事
由suggest引导的宾语从句可以虚拟也可以不虚拟：
His white face suggests that his not healthy.表明
He suggested that we have a rest.建议
If I could only see him once!
If only I had listened to your advice. 很明显，这种句型省略了主句
2．其他状语从句中：
 as if/as though/even if…
Tom looked sad as if he had heard bad news.
I won’t lend you any money even I had money.
3．名词性从句：
 wish that…（hope后的宾语从句不虚拟）
I wish I were as strong as you.
How I wish it wasn’t raining!
 would rather/would sooner/had rather that…表示“宁愿”
I would rather they came tomorrow.
I could go myself but I would sooner you went.
I had rather you told him than I did.
 It is time/high time that…
It is time we went to bed.
+(should) do：
if only: 要是...多好
Examples:
1. If only he had been here.
要是他当时在这儿就好了。
2. I dread the ing exams. If only I could have time to review my lessons.
我对即将到来的考试非常担心。如果我有时间复习该有多好啊。
3. If only I had another chance.
要是我再有一次机会就好了。
4. I am so tired. If only I can take the day off tomorrow.
太疲倦了。如果明天能不上班多好。
5. If only problems would e one at a time!
要是问题一次只发生一个该多好！
6. If only it clears up, we'll go.
只要天一放晴,我们就去。
7. If only one had an unlimited supply of money!
要是财源不断就好了！
8. She would be a very good player if only she could get it together.
她若能控制得当就能成为很好的选手.

if only 只能表示 与现在事实相反 和 与过去事实相反
现在事实相反，用过去时态
与过去事实相反，用过去完成时
例子
If only you listened to me .和现在事实相反
If only you had listened to me .和过去事实相反
总之就是往后推一个时态就对了！