定语从句是什么

I. 限制性定语从句的特殊用法
II. 非限制性定语从句
III. 同位语从句
IV. 同位语从句和定语从句的区别

I. 限制性定语从句的特殊用法
1. way + 定语从句

way 后面跟定语从句有三种形式。

(1) way + in which + 定语从句

例如：

She was pleased with the way in which he had accepted her criticism.

(2) way + that +定语从句

例如：

They didn’t do it in the way that we do now.

(3) way + 定语从句

例如：

He didn’t speak the way I do.

2. as 引导的定语从句

(1) 在由 as 引导的定语从句中所修饰的词（先行词）前面常有 such 或 the same。

例如：

Such people as you describe are rare nowadays.

I have the same trouble as you (have).

(2) As 在定语从句中可以作主语、宾语或表语。

例如：

Let’s discuss only such questions as concern everyone of us.（作主语）

I never heard such stories as he tells.（作宾语）

I’ve never seen such a clever man as he is.（作表语）

(3) As 有时引导非限制性定语从句，可在定语从句中作主语、宾语、表语，修饰主句