As的用法

一、 as作连词的用法:
1. 作"当……的时候",引导时间状语从句。注意与when、 while的用法区别。（同上）
2. as=since, 作"既然"、"由于"解,引导原因状语从句,常用来表示已为人们所知或显而易见的原因或理由。如:
As / Since you're not feeling well, you may stay at home.
3. as=in the way that, 作"像"、"按照……的方式"解,引导方式状语从句。如:
He speaks English as Americans do.
4. 用于as...as...或not so/ as...as...中,前一个as是副词,后一个as是连词,引导比较状语从句。如:
I don't speak English so/ as well as he does. 
5. 作"虽然"、"尽管"解,引导让步状语从句。常用倒装语序,即adj. /adv. / n.+ as +主语+谓语+主句。如:
Child as he is, he knows a lot. (child前不用冠词)

二、 as作关系代词,引导定语从句,作"正如"、"这一点"解。如:
He is very careful, as his work shows.
另外,当先行词被the same, such等词修饰时,常用as来引导定语从句。如:
Such a clever boy as he can learn anything quickly. 

三、 as作介词的用法:
as引导的介词短语大多用作状语,as译为"作为";少数情况可引起宾语补足语。如:
As a League member, I'll take the lead in everything. (状语)
She works as a doctor.  (状语)
They have me as one of their own children.(引起宾语补足语)
When后边接名词的一个例子（人还有疑问？？）
When still a boy of six, Bob was sent away from home. (章振邦 p1155)

8．divorce后面的that能不能省掉。
定语从句中that的省略
由that引导的定语从句并且that做主语，那么that不能省略

9．A of B 结构的修饰问题
--- A of B+that定语,其修饰的主体是B ？
--- A of B+分词，分词有可能是修饰A ，也有可能是修饰 B？
跳跃和就近都有可能,不能武断哪种肯定对.OG1就是明显的就近修饰,OG254则是跳跃修饰.
不能把修饰方向作为判断答案标准,可能从其他语法点着手.. A of B结构，除非有主谓一致的提示，不然只能逻辑判断。
*one of Ns that中that后面的动词用复数
the only one of Ns that 中that后面的动词用单数