as：
ad.一样,相同；被看作,被认为是
conj.(用于比较)与…一样；诸如,如同；当,正值；因为,由于；以致于
prep.像…；以…的身份,作为
1：as引导方式状语从句，表示“像……一样”，“按照”。
You must do everything as I do．你必须照我做的那样做。
2：as引导时间状语从句，常表示伴随情况，“正当，一面……一面”。
She often sings as sheg oes along ．她常边走边唱。
3：as引导原因状语从句，表示“由于，因为”（语气比because弱），常置于句首。
As I'm ill，I won't go．我有病，不去了。
4：as引导让步状语从句，表示“虽然，尽管”，常用在“adj．／n．／adv．＋as”结构中。
Poor as he was ，he was honest．他很穷，却很诚实。
5：as引导目的和结果状语，这时常与so搭配。
He raised his voice so as to be he ard．他提高嗓门，好让别人听见。
6：as引导比较状语从句，意为“像……一样”，常用句型为“as（adv．）．．． as（conj．） ．．．， not so／as．．．as．．．”。
I'm not so good at drawing as you．我不像你那样擅长画画。
as well同样 ; 也 ; 还是……为好 ; 一样
such as例如 ; 诸如 ; 比如 ; 像
as always一如既往 ; 就像以前一样 ; 成永远
as well as既…又…，除…之外（也），此外
as with 正如……一样
as far as 远至……，就……而言；
as good as 是“和……一样好”；几乎一样；实际上等于
as many/much as+数词 多达……；
as a consequence因此；结果
as a consequence of 由于……
as far as I can 尽我所能
as it were或者说
as soon as表示“一……就”。
英语中AS的处理流程：
第一步：判断词性；介词，副词，连词，代词； （如何判断？）
第二步：确定As 的含义；
1)介词: (名词前)
(1) 像；如同:
They were all dressed as clowns.
他们都打扮成小丑。
The bomb was disguised as a package.
炸弹伪装成一个包裹。
(2) 作为；当做；是
Treat me as a friend.
要把我当作朋友。
I respect him as a doctor.
我尊敬他这个医生。
You can use that glass as a vase.
你可以把那个玻璃杯当作花瓶用。
考研中常考词：
See A as B
= view A as B
= treat A as B
= perceive A as B
= portray A as B
= take A as B
=认为A是B；
elect A as B
=选择A作为B；
而且这些搭配常写成这样：
see A as B
=See as B A (其他几个动词也是一样的）
例句:
I view this match as an opportunity.
=I view as an opportunity this match.
2) 副词：（形容词前）
（1）(比较时用)像…一样,如同:
You're as (副词) tall as（介词）your father.
你和你父亲一样高。
He was as white as a sheet.
他面无血色。
She doesn't play as well as her sister.
她演奏得不如她姐姐。
I haven't known him as long as you (= as you have known him).
我认识他的时间没有你长。
He doesn't earn as much as me.
他挣的钱比我少。
We'd like it as soon as possible.
我们希望越快越好。
(2) (指事情以同样的方式发生)和…一样:
As always, he said little.
他和平时一样,少言寡语。
3） 连词+状语从句（主干完整的句子）
1. 当…时；随着:
As she grew older, she gained confidence.
随着年龄的增长她的信心增强了。
2. 照…方式:
Leave the papers as they are.
别去动那些文件。
3. 因为；由于:
As you were out, I left a message.
你不在,所以我留了一张字条儿。
As inflation rates rises, the central bank raises interests’ rate.
4. 尽管；虽然；即使（语序）（表语置于句首；动词置于句首）
Happy as they were, there was something missing.
尽管他们很快乐,但总缺少点什么。
Try as he might (= however hard he tried), he couldn't open the door.
他想尽了办法也没能打开门。
Simple as the picture is, the symbolic meaning behind it is as deep as ocean.
Simple as the chart is, the symbolic meaning behind it is as deep as ocean.
4） 代词 (不翻译) （正如） 引导定语从句（不完整的句子）
一定要确定As的指代对象：
As you know, Peppa is leaving soon.
Know 需要宾语，as 充当宾语！as 指代什么？
Peppa is leaving soon
As you know，Peppa is leaving soon
As we all know, Kevin is handsome.
(众所周知)
你是知道的,佩奇马上要离开了。
As is shown above, there is a young tree in the sunshine
Is 需要主语，as 充当主语，as 指代什么？
如上所示，阳光下有一颗小树。
The father doesn't think that this job is not suitable for the son, as the mother believes.
记住这里的as只能指代观点本身（蓝色部分）：
The father doesn't think that this job is not suitable for the son, as the mother believes.
所以还原为两个句子就是：
The father doesn't think that this job is not suitable for the son.
The mother believes that this job is not suitable for the son.
