英语中的虚拟语态是什么？怎么用？

虚拟语态

一、虚拟语态的几种固定句式
1.I wish.....(一定用虚拟)

1）I wish i were you

2)I wish that she were here with me

2、as if...../as though 好象 (不一定用虚拟，要看说话的语境``)

1）He speaks as if he were an American.(如果他真的是美国人就不用虚拟了`)

2）He looks as if nothing had happened.

3、if I did/were....I would......

1)If I were you,I wouldn't do that

2)If it were to snow tomorrow,they would not go out
.(用were to 和were的区别是were to 是对将来的虚拟，
用were是对现在的虚拟`详见二、虚拟语态的几种形式```)

二、虚拟语态的几种形式
1、对现在的虚拟：（直接用动词的过去时....）
if I did /were.... i would.......

2、对将来的虚拟：if ..were to..I would....= if ..did...I would....
(此项与对现在的虚拟相同，但对现在的虚拟不用were to.
要区别对将来的虚拟和对现在的虚拟``一般句子里面都有时间标志``)

(If it were to rain tomorrow,we would not go out.
=If it rained tomorow,we would not go out.)

3、对过去的虚拟 If I had done....I would have done....

(If I had know the answer, I woul