定语从句 用作定语的从句叫做定语从句。定语从句通常置于它所修饰的名词(或代词)之后,这种名词(或代词)叫做先行词先行词。引导定语从句的关联词为关系代词和关系副词。关系代词关系代词(who,whom,whose,that,which等)在定语从句中可用作主语、定语、宾语等;关系副词关系副词(when,where,why等)在定语从句中只用作状语。结构比较1.人(n.)+who+n.)+who+从句从句 比较:一位漂亮的女孩 a beautiful girl 形容词做定语 a girl who is beautiful 从句做定语(girl是先行词)2.物(n.)+that+从句 比较:一本有趣的书 an interesting book 形容词做定语 a book that is very interesting 从句做定语(book是先行词)