宾语从句和表语从句中关于虚拟语气在从句中的作用

宾语从句和表语从句都属于名词从句,用于表示建议、规劝、要求、命令等的名词从句使用虚拟语气目的是缓和让人非得接受的强硬感觉,言外之意告诉他人这只是主语的个人见解罢了,听不听全在自己.名词从句的虚拟语气包括下列三种：
一、主句中有 advise/advice,mind,suggest/suggestion,demand,request,insist/insistence,order,propose/proposal 等表示动词或名词,从句动词需要用 should do 或者干脆省去 should 直接用动词原形表示,如：
宾语从句：
-- I suggested that we (should) hold a meeting tinight.
-- The chaiman proposed that we (should) discuss the question.
主语从句：
-- It is his insistence that the matter (should) be put to vote at once.
-- It is my suggestion that we (should) hold a meeting tinight.
表语从句：
-- His insistence is that the matter (should) be put to vote at once.
-- My suggestion is that we (should) hold a meeting tinight.
二、在 it is ...that 中,如果表语是 important,neccessry,strange 等表示主语个人见解的形容词时,主语从句也要虚拟,用（should）do 作谓语动词,如：
-- It is quite natural that he (should) think so.
-- It is strange that he have gone away without telling us.
三、wish,had better,would rather 和 it is time 后的从句也要用虚拟,但是谓语动词与条件虚拟的动词一致,如：
-- I wish I were young again.但愿我还年轻/我要是回到年轻时代就好了.
-- He'd better you would come tomorrow.他倒希望你明天回来.
-- They would rather you had come to our party then.他们宁愿你那时来参加聚会.
-- It's high time that you had got up.你早就该起床了.