一、什么是定语? 句子中修饰名词或代词的成分叫做定语。定语可以由形容词、名词、不 定式、分词、动名词或从句来充当,且定语往往翻译为“......的”。 形容词作定语:I bought an expensive computer. I met someone funny on my way to school. 名词作定语: She is an English teacher. 不定式作定语:I have a lot of work to do. 过去分词短语作定语:The book written by Tom is very popular now. 现在分词作定语:We can see the rising sun. 动名词作定语:He is in the reading room. 从句作定语:The boy who broke the window is Tom’s brother. 二、什么是定语从句? 在复合句中修饰名词或代词的从句叫定语从句。被定语从句修饰的词叫 先行词,定语从句一般紧跟在它所修饰的先行词之后。在先行词和定语从句 3 之间起连接作用的词叫关系词。关系词有关系代词和关系副词两种。 定语从句的结构、名称如下图所示: 关系词常有三个作用: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