as是什么意思

〔说明〕 as if〔though〕引导的方式状语从句中的谓语动词多用虚拟语气，指现在的情况时用一般过去时，指过去的情况时用过去完成时。从句中的谓语动词偶尔也可用陈述语气，这时表示的内容可能是真实的，也可能是不真实的。

He likes to talk big as if he was an important person.

他老爱说大话，就仿佛他是一位要人似的。

He talks as though he knew all about it.

他说话的口气似乎他全都知道了。

He continued with his reading as if nothing important had happened.

他若无其事地又继续看他的书。

He walks as if he is drunk.

从走路的情况看，他是醉了。

She treats me as though I am/were stranger.

她待我形同路人。

The house was lit up as though a big celebration was going on.

整个屋子灯火辉煌，犹如在举行盛大庆典。

Eagles were flying up and up as if to ride the white clouds.

老鹰越飞越高,好像翱翔在白云之上。

The girl listened as though turned to stone.

那姑娘仿佛变成了石头似地倾听着。

〔说明〕 as if〔though〕引导的表语从句中谓语动词可用虚拟语气，也可用陈述语气，完全依说话人对从句内容真实性的判断。在it looks,it seems等结构之后常用陈述语气。

She looks as if she were ill.

她看起来像生病一样。

She looks as if she had been ill.

她看起来像生过病一样。

He looks as though he would not hurt a fly.

他看起来善良得连只苍蝇都不肯伤害。

He felt as if he had lost his power of judgement.

他觉得自己仿佛已失去了判断力。

It seems as though it was spring already.

现在好像是春天了。

It looks as though it may blow up a gale tonight.

看来今晚可能要刮大风。

It sounds as though there is a knock at the door.

听起来好像有人在敲门。

〔说明〕 as if〔though〕引导无定形句可以表示惊讶、不信任、愤懑等强烈感情，意思是“好像…似的”“倒是…似的”。

As if I cared!

好像我在乎似的〔我才不在乎呢〕！

As if anyone would believe that story.

别人才不信那一套呢。