定语从句定语从句是在主从复合句中修饰某个名词或代词句子,它在句中作定语。被修饰的名词或代词叫先行词,连接先行词和定语从句的词叫引导词(也叫关系词)。如I know the girl who is sitting under the tree. 我认识那个正坐在树下的女孩。 引导词 先行词 从句 (定语从句) This is the most interesting book that he has ever read. 这是他所读过的书中最有趣的一本。 引导词 先行词 从句 (定语从句) 考点1:先行词是人时引导词的选用 (1). 先行词是人,引导词后紧跟动词时用who或that. 如: Here comes the