as+形容词/副词+as或as+形容词+名词+as。固定用法“as...as possible”意为“尽可能地...”,例如“as quicky as possible尽可能地快”，“as much as possible 尽可能地多”。

例句：

We have to run as fast as possible.

我们得尽可能快的跑。（fast属于副词）

Can you say it as loudly as possible?

你能尽可能说得声音大一些吗? （loudly属于副词）

短语解析：

as ... as是用于比较句型,中间插入的是形容词或副词的原级。意思是"达到与什么相同的程度"。

例句：

He is as strong as a horse.

他力大如牛。