it would be 虚拟语气 虚拟语气中should什么情况下可以省略

虚拟语气中should什么情况下可以省略  

虚拟语气中should什么情况下可以省略

1. 在表示建议,要求,命令,想法的动词后的从句里, 用should + 动词原形, should 可以省略. 如 advise, agree, mand, decide, demand, determine, grant, indicate, insist, order, prefer, propose, request, require, stipulate, suggest, urge, vote.常考到的是: suggest, advise, demand, require, propose, insist, order, request.
His doctor suggested that he (should) take short leave of absence.
The author proposed that TV (should) be turned off at least one hour every day.
2. 在表示建议,要求,命令,想法的名词后的从句里, 用should + 动词原形, should可以省略. 如 advice, decision,agreement, mand, decree, demand, determination, indication, insistence, order, preference, proposal, request, requirement, stipulation etc.
It was Bill’s suggestion that everyone (should) have a map.
His suggestion was that everyone (should) have a map.
He gave us a suggestion that everyone (should) have a map.
3. 在It is/was +形容词后的that 从句中用should的结构, should 可以省略. 这类形容词常见的有: advisable, anxious, pulsory, crucial, desirable, eager, essential, fitting, imperative(绝对必要), impossible, improper, important, natural, necessary, obligatory, possible, preferable, probable, remended, urgent, vital etc.
It‘s natural that she (should) do so.
It is essential that we (should) tell her the news.

虚拟语气中，什么情况下should可以省去

虚拟语气在从句中用should的情况:
1. 在建议、要求、命令、想法后的动词后的宾语从句里, 用should + 动词原形, should 可以省略. 如 advise, agree, mand, decide, demand, determine, indicate, insist, order, propose, request, require, suggest, urge.
The doctor suggested that she (should) take good care of herself..
The author proposed that TV (should) be turned off at least one hour every day.
2. 在建议,要求,命令,想法后的名词后的从句里, 用should + 动词原形, should可以省略. 如
advice, agreement, mand, decision, demand, determination, indication, insistence, order, preference, proposal, request, requirement etc.
It was Bill’s suggestion that everyone (should) have a map. (主语从句)
His suggestion was that everyone (should) have a map. (表语从句)
He gave us a suggestion that everyone (should) have a map. (同位语从句)
3. 在It is/was +形容词后that引起的主语从句中用should的结构, should 可以省略。这类形容词常见的有: advisable, anxious, pulsory, crucial, desirable, eager, essential, impossible, improper, important, natural, necessary, obligatory, possible, preferable, probable, remended, urgent, vital; strange, surprising, unnatural，etc.
It's natural that she (should) do so.
It is essential that we (should) tell her the news.
It is important that we (should) learn English well.
还可用在下列含有被动语态的句型中：
It is/was suggested (requested, required, ordered, proposed, decided, …) that…
It is suggested that parents (should) spend more time with their children.
4. 在 lest( 以免) 、for fear that ( 以免) 、in case (以防、以备) 、so that、in order that引起的表示目的的状语从句中用should(could/would)+动词原形, should 可以省略.
She walked quietly lest she (should) wake up her roommates.
Have your gun ready in case we should need it.
He left early in order that the children would not be alone in the house.

在美式英语中要求省略should而使用原形动词。在英式英语中不可省略should。

should什么情况下算虚拟语气

一般情况下可以根据句意来判断，should的意思是应该，如果句子含义是“应该做而没有做”那么就是虚拟语气。should多用于表达虚拟语气，所以句子中出现的一般都算虚拟。

虚拟语气中should不能省略的情况

should表竟然的意思到时候不省
should have done 应该做而没做是不省

哪些情况下虚拟语气可省should?

宾语从句
在动词advise,ask,mand,desire,insist,order,propose,request,require,suggest等。
表语从句、同位语从句
在与advice,idea,order,demand,plan,proposal,suggestion,request等名词相关的表语从句和同位语从句。
很权威的参考哦！
很高兴为你解答！
老师祝你学习进步！
请及时采纳哦！多谢你的问题！^_^

在虚拟语气中什么情况用would，什么情况用should

虚拟语气用在状语从句中。
虚拟语气最多地用在表示条件的状语从句和表示结果的主句中。在表示与事实相反的虚拟语气时，动词有三种时态形式，即现在，过去和将来。
与现在事实相反的：
条件从句 结果从句
If I (we,you,he,they)+ 动词过去式.. if I (he,she) were... I (we) should + 动词原形。 He (you,they) would + 动词原形。
与过去事实相反的：
条件从句 结果从句
If I(we,you,he,they)+ had + 过去分词 I(we)should + have+ 过去分词。He (you,they) would + have + 过去分词。
If I were you, I should buy it.
如果我是你，我就买了它。
If I had time, I would study French.
如果我有时间，我会学习法语的。
If she knew English,she would not ask me for help.
如果她懂英语的话，她不会找我帮忙的。
If you had got up earlier, you could have caught the train.
如果你早一点起床，就会赶上火车的。
If it were fine tomorrow,I would go shopping.
如果明天天气好，我就去买东西。

关于虚拟语气，什么情况下用should do？什么情况下用would do？

对现在/将来的事虚拟时，should/would do都对，没有语法区别，只是意思不同。一个“应该”，一个“会”，根据句意所要表达具体选择。

虚拟语气中if省略的情况

不太清楚 建议找本语法书看看
有专门的关于 IF 虚拟语句说明
还有倒装语句 找找看