谁能告诉我关于as.as的用法,中间加adv.还是adj.

都可以,看情况.
as...as的用法
as...as意为"和……一样",表示同级的比较.使用时要注意第一个as为副词,第二个as为连词.其基本结构为：as+ adj./ adv.+as.例如：
(1)This film is as interesting as that one.这部电影和那部电影一样有趣.
(2)Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅.
其否定式为not as/so +adj./ adv.+as.例如：
This dictionary is not as/so useful as you think.这本字典不如你想象的那样有用.
若有修饰成分,如twice,three times,half,a quarter等,则须置于第一个as之前.例如：
Your bag is twice as expensive as mine.你的袋子比我的贵一倍.
几个关于as...as的常见句型：
(1)as...as possible
Please answer my question as soon as possible.请尽快回答我的问题.
(2)as...as usual/before
She looks as pretty as before.她看起来和以前一样漂亮.
(3)as long as...(引导条件状语从句)
It took us as long as three years to carry out the plan.我们花了长达三年的时间才完成这项计划.
(4)as far as
He walked as far as the railway station yesterday evening.昨天傍晚,他一直散步到火车站.
(5)as well as
She cooks as well as her mother does.她烧菜烧得跟她母亲一样好.
一些带有as...as结构的常见短语归纳：
as busy as a bee像蜜蜂一样忙碌
as easy as ABC像ABC一样容易
as deep as a well像井一样深
as light as a feather像羽毛一样轻
as soft as butter像黄油一样软
as rich as a Jew像犹太人一样富裕

都可以,看情况.
as...as的用法
as...as意为"和……一样"，表示同级的比较。使用时要注意第一个as为副词，第二个as为连词。其基本结构为：as+ adj./ adv. +as。例如：
(1)This film is as interesting as that one.这部电影和那部电影一样有趣。
(2)Your pen writes as s...

两者都可以,
Read as much as possible.
Run as fast as possible.
She is as clever as you.
I can speak as frequently as you.

中间加原级

adv和adj都可一
例:
He runs as fast as me .
She is as beautiful as Lucy.

as ... as是英语中很重要的一个句子，作文口语经常用的！
下面是一个很好的解释，你可以自己去看。
http://www.***.com/101resource004/wenjianku/200537/101ktb/ynjd/yncevm0b/yncevm0b.htm