as 的用法汇总

as引导时间状语从句（注意与when,while区别） as常有随着的意思.

1.As time went by ,I become more and more interested in music.

As I was getting off the bus ,I saw her . （此时=while when）

2.as soon as

He got a job as soon as he left university.

as引导原因状语从句（注意与for,since,beacuse,now that区别）

As I got up late this morning,I was late for school.

as（though）引导让步状语从句 （as,though从句在主句之前,须倒装,从句中状语,动词原形,表语置于句首.如表语是名词,前置时省略冠词）

Child as he is ,he knows a lot .

Try as he might ,he couldn't find a job .

as if（as though）引导方式状语从句 （从句一般用虚拟语气）

The teacher treats the students as if they were her own children.

（just）as 引导方式状语从句

When in Rome,do as the Romans do .

as（so） long as 引导条件状语从句

As long as you study hard ,you won't fail the test.