as的具体用法

1. [表示比较]像…(一样)，达到…程度，以至于：
It flew straight as an arrow.
它直飞如箭。
You are as good as you think you are.
你像你自己认为的一样好。
2. [表示方式]以…的方式，按照；如同，如同…那样：
Do as you are told.
照吩咐去做。
Do as we do.
我们怎么干，你就怎么干。
3. [表示时间] 当…的时候，在…的同时，和…同时；当，正值：
She wept as she spoke.她边说边哭。
Pay as you enter.进来时付钱。
4. [表示原因]因为，由于，鉴于；既然：
As you object, we won't go.
由于你反对，我们不去了。
As you are leaving last, lock up.
你是最后一个离开，把门锁好。
5. [与so连用，表示结果或目的]：以至于，结果是：
The question is so obvious as to need no reply.
这问题很清楚，不必回答。
6. [表示让步，词序倒装]虽然，尽管，纵：
Tall as she was she couldn't reach the oranges.
她虽然长得这么高，仍够不着那些橙子。
Strange as it seems,it is so.
虽然看来很怪，但事实如此。
7. [口语][引导名词从句，在主从复合句的主句中]＝ that:
I don't know as I should.
我不知道我该这么做。
I don't know as I do.
我不知道我知道。
8. [与 so 连用，表示目的]为了，为使，以便：
Students should take notes so as to make revision easier.
为了便于复习，学生应该记笔记。
9. [常与 so
连用，表示比例或关系]正像；随着…：
As the wind blew harder,so the sea grew rougher.
风越刮越大，海浪也越来越汹涌。
10. 仿佛，好像( ＝ as if)：
It seems as she's never happy.
她似乎生活得一点也不愉快。
11. 根据；[与 go 连用]按照…的一般标准来说：
as far as it goes
就一般标准来说，就其本身来说
12. [口语][引导名词从句， ＝ that]
13. [方言]比；与其…(不如…)( ＝ than)