高三英语一轮复习---定语从句讲义

定语从句 （一）基本概念 1.由一个句子作定语，修饰句中一个名词或代词，有时也可以修饰整个句子或句中的部分内容，这样的从句就是定语从句，被其修饰的名词或代词叫先行词。 2.关系词分为两大类，即关系代词和关系副词，其作用一是引出一个定语从句，二是代替其所修饰的先行词，三是在句中充当某个句子成分。 关系词的分类和基本用法 表一 分类 指代 引导词 关系代词 人 who, whom, that, as 事物 which, that, as 人或物（表所属关系） whose 关系副词 地点 where 时间 when 原因 why 表二 关系代词 指代 例句 解释 who 人 The man who helped you is Mr White. 在定从中作主语 whom That is the person(whom/who/that) you want to see. 在定从中作宾语，可省略 whose He is the father whose son studies very well in our class. 在定从中作定语 that I´m not the fool that you thought me to be. 在定从中作表语 as He is such a lazy man as nobody wants to work with. 在定从中作宾语 that 事物 The only thing that we can do is to give you some advice. 在定从中作宾语 which A dictionary is a useful book which tells us the meaning of words 在定从中作主语 whose He lives in a room whose window faces south 在定从中作定语 as It is such a big stone as nobody can lift. 在定从中作宾语 整句内容 As is known to all, he is the best student. 在定从中作主语 表三