三、虚拟语气：虚拟语气则表示假想或主观愿望等

He looked at me as if I were mad.他瞧着我仿佛我疯了似的。

You could get a better job if you spoke a foreign language.

如果你能讲外语，你可以找到好一点的工作。

But for your help，I wouldn’t have succeeded.要不是你帮忙，我是不会成功的。

If I had thought of it I would have talked to mother.如果我想到了我就会跟妈妈讲了。