关于虚拟语气的问题希望可以讲解一下虚拟语气中所有有关had的语法点

一、虚拟条件句的类别
虚拟条件句可分为三类：一类是叙述与现在事实相反的情况；一类是叙述与过去事实相反的情况；另一类是叙述与将来事实相反的情况。其主句和从句的谓语动词构成如下：
1. 与现在事实相反
条件从句用过去时（be动词的过去式一律用were），主句用would （should/ might / could）+动词原形”。如：
If I were you, I would accept the invitation to the party.
如果我是你的话，我将接受去舞会的邀请。
If I knew her well, I would tell you about her.
如果我很了解她的话，我将告诉你关于她的事情。
2. 与过去事实相反
条件从句用过去完成时，主句用“would /should/ might / could + have +过去分词”, 如：
If you had been there last night, nothing would have happened.
如果你昨天晚上在那儿的话，就没有什么事情发生了。
If I had got up earlier, I would have caught the first bus.
如果我起得更早一些的话，就赶上头班车了。
3．与将来事实相反
条件从句用过去时或者“were to + 动词原形”或者“should+ 动词原形”，主句用“would （should/ might / could）+动词原形”, 如：
If it were Saturday tomorrow, we wouldn’t have an exam.
如果明天是周六的话，我们就不考试了。
If you were to visit the school tomorrow, you would see Professor Smith.
如果你明天去参观学校的话，你就会看到史密斯教授。
If it should rain tomorrow, the sports meet would be put off until next Friday.
如果明天下雨的话，运动会将被推迟到下周五举行。

虚拟语气是一种动词形式,表示说话人的一种愿望,假设,怀疑,猜测,建议等含义,虚拟语气所表示的含义不是客观存在的事实.If I were you,I'd take them away.如果我是你的话,我就会带走他们.If I had met Li Hua,I could ...