上一篇文章为大家介绍了部分虚拟语气的用法总结，这篇文章小普为大家继续总结虚拟语气的知识点！
》》》用于宾语从句
一、用于 wish 后面的宾语从句
wish 后面的宾语从句可以表示与事实相反的情况，也可以表示将来不太可能实现的愿望。其宾语从句的动词形式为：
1. 与现在事实相反，从句用动词的过去式（be的过去式用were）。
2. 与过去事实相反，从句用had+过去分词。
3. 与将来事实相反，从句用would+动词原形。
I wish it were spring all the year round.
We wish we had arrived there two hours earlier.I wish it would rain tomorrow.
二、用于强烈语气后的宾语从句
在 insist, order, command, advise, suggest, propose,demand, require, request，ask 等表示“坚持”、“命令”、“建议”、“要求”等动词后的宾语从句用虚拟语气“（should) ＋动词原形”。
He insisted that I (should) go with them.
He ordered that it(should) be sent back．
注意：如果insist作“坚决主张；坚持要求”讲，接that从句(从句的动作为将要发生之事)时，从句常用虚拟语气，即“(should)+动词原形”，而表示“坚持说；坚决认为”，接that从句(从句的动作多为已发生之事)时，从句使用陈述语气。suggest作“建议”讲时其宾语从句中要用虚拟语气，即“(should)+动词原形”，而作“暗示”、“表明”讲时则要用陈述语气。
He insisted that we(should) accept these gifts．
He insisted that I had read his letter．
She suggested that the class meeting(should) not be held on Saturday．
What he said suggested that he was a cheat．
三、用于would rather后面的宾语从句
从句谓语一般用过去时来表示现在或将来。在谈到过去的动作时，从句谓语则用过去完成时。
I'd rather you met her at the airport tomorrow morning．
I'd rather you hadn’t told him the news that day．
》》》用于主语从句
“It is+形容词／名词／分词+that从句”句型在表示“惊奇，不相信，惋惜，理应如此”等时，主语从句的谓语动词用虚拟语气，即用“should+动词原形”。这样的形容词有necessary，important，natural，strange等；分词有desired，suggested，decided，ordered，requested，proposed等；名词有a pity，a shame等。should意为“应该；竟然”时，可以省去，但不可换用would。
It is necessary that he(should) be sent there at once．
It was a pity that you(should) be so careless．
It is suggested that he(should) be present．
》》》用于if only引起的感叹句
if only表示“如果⋯⋯就好了”，它之后的感叹句常用来表示一种不太可能实现的愿望或向往，因而常用虚拟语气，用过去时表示对现在情况的虚拟，用过去完成时表示对过去情况的虚拟，用would／should+动词原形表示对将来情况的虚拟。
If only she could have lived a little longer．
Look at the trouble I am in! If only I had followed his advice．
I dread the coming exams．If only I could have time to review my lessons．
》》》用于表语从句和同位语从句
在含有advice，idea，order，demand，plan，proposal，suggestion，request等名词的表语从句和同位语从句中，其谓语动词一般用虚拟语气(should)+动词原形结构。
My suggestion is that we(should) start to work at once．
What do you think of his proposal that we(should) put on a play on the English evening?
》》》用于as if/though引导的方式状语从句
在as if／though引导的方式状语从句中，有时用虚拟语气。表示与现在事实相反，谓语动词用一般过去时；表示与过去事实相反，用过去完成时；表示将来的可能性不大，用“would(might，could)+动词原形”。
They treat me as though I were a stranger.
》》》用于定语从句
在It is (high／about) time (that)⋯句型中，定语从句的谓语动词用过去式或“should+动词原形”(should不能省略，be用were表示)，意为“早该”。
It is time we left．
It is high time you should go to work．
