现在式
as if虚拟语气现在时用于表示说话人认为某个情况成立(尽管实际上可能不成立),并对该情况的后果进行推测。 句型为:
as if + 主语 + 动词原形例如:
She speaks as if she knows everything.(她说话就好像她知道所有事一样。 )
过去式
as if虚拟语气过去时用于表示说话人认为过去某个情况成立(尽管实际上可能不成立),并对该情况的后果进行推测。 句型为:
as if + 主语 + had + 过去分词例如:
He acted as if he had never seen me before.(他表现得好像从未见过我一样。 )
过去完成时
as if虚拟语气过去完成时用于表示说话人认为过去某一时刻之前某个情况成立(尽管实际上可能不成立),并对该情况的后果进行推测。 句型为:
as if + 主语 + had + 过去分词 + 过去完成时态例如:
I wish I had done it as if I had known the consequences.(我希望当时我就这么做了,如果我知道后果的话。 )