一．定语从句：用复 合句修饰名词或代词的从句叫定语从句。被修 饰的名词或代词叫先行词。引导定语从句的有关系代词和关系副词.
1）Robert Johnson was a blues singer and a guitarist（ who has been called the father of rock and roll）.
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先行词 关系代词
2）The room（ where the boys were fed ） was a large stone hall.
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先行词 关系副词
定语从句分为限制性定语从句和非限制性定语从句
限制性定语从句常放于被修饰词之后，与其之间没有逗号隔开，如：
This is the room where he lived last year.
