1． as 引导的状语从句

1） as 引导时间状语从句，意为“随着 …… ”，常与比级连用。

We get wiser as we get older.
2). as 引导让步状语从句。需将表语或状语前置，有时也可用 that / though 代替 as 。

Clever as he was, he often failed in examinations¹.

3） as 引导比较状语从句。与 than 引导的比较状语从句类似，有时从句用部分倒装。
She took as much responsibility asdid her husband.

4） as 引导表示强调意义的特殊比较句型。

1） as … as anything;

as … as can be;

as …as one can

“ 极其 …… , 到了最 …… 的程度”

He is as naughty as anything .

2） as … as one can;

as … as permit;

as best one can

表示“尽可能”

He began to run, as fast as he could.

3） as + adj. … as + adj.

as 后用同一形容词，表示“极其、非常”

She returned to her small town as ill as ill .

5） as 引导类比从句，与 so 连用。表示“正如 …… 所以 ……”

As you brew², so must you drink.

6） as 引导比例从句，与 what 用法相同。

Books are to the mind as food is to the body

练习:

1.___ French people enjoy their wine, ____ the British enjoy their beer.

2.He is just as mean ____ he could be.

3.Three is to two ___ six is to four. [3:2 = 6:4] 

4.Much ___ I like English, I feel that grammar is boring.

5.This thought grew ___ the days passed.

答案：

1.__Just as_ French people enjoy their wine, _so___ the British enjoy their beer.

2.He is just as mean ___as_ he could be.

3.Three is to two _as__ six is to four. [3:2 = 6:4]

4.Much __as_ I like English, I feel that grammar is boring.

5.This thought grew _as__ the days passed.