定语从句及相关术语 1.定语从句：修饰一个名词或代词的从句称为定语从句，一般紧跟在它所修饰的先行词后面。2.关系词：引导定语从句的关联词称为关系词，关系词有关系代词和关系副词。关系代词有 that, which, who, whom, whose, as 等；关系副词有 where, when, why 等。关系词常有 3 个作用：1，引导定语从句。2，代替先行词。3，在定语从句中担当一个成分。 ，名词，代词，数词，分词，副词，不定式以及介词短语来担任，也可以由一个句子来担任． 定语从句是由关系代词或关系副词引导的从句，其作用是作定语修饰主句的某个名词性成分，相当于形容词，所以又称为形容词性从句． 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，常解释为正如、如同。 例如： As is known to all, the earth moves round the sun.（作主语） As was expected, he performed the task with success.（作主语） As he predicted, the wind changed.（作宾语） The meeting is very important, as indeed it is.（作表语） II. 非限制性定语从句 1.非限制性定语从句由 who, whom, which 引导（不可用 that），还可以由 whose, when, ...
