as if 用法归纳

高考英语复习材料

as if 用法归纳

1． as if 从句的作用

as if一般可由as though来代替。可在look, seem等系动词后引导表语从句。如： He looked as if / though he was ill. 他看起来好像生病了。

It seems as if it is going to rain.

看来好像要下雨了。

它还可引导方式状语从句。如：

I remember the whole thing as if / though it happened yesterday.

我记得整个事情，就好像它是发生在昨天一样。

The child talked to us as if he were a grown?鄄up.

那个小孩跟我们讲话就像个大人一样。

2． as if 从句的语气及时态

① 当说话者认为句子所述的是真实的或极有可能发生或存在的事实时， as if从句用陈述语气。如：

It sounds as if it is raining.

听起来像在下雨。

He talks as if he is drunk.

从他说话的样子来看他是醉了。

② 当说话人认为句子所述的是不真实的或极少有可能发生或存在的情况时， as if从句用虚拟语气。

表示与现在事实相反，谓语动词用一般过去式。如：

You look as if you didn’t care.

你看上去好像并不在乎。

He talked as if he knew what had happened.

他说话的样子，好像他知道发生了什么事情。

表示与过去或与谈话时间为止发生的事实相反，谓语动词用“had +过去分词”。如： He talked about the Great Wall as if he had been there before.

他说起长城来好像他以前去过那里。