定语从句用法总结一. 定义:定语由一个句子来充当,那么这个句子就叫做定语从句。eg: The old town has narrow streets and small houses that are built close to each other.其中划线部分为定语从句。二. 分类:分为限制性定语从句和非限制性定语从句,还有间隔性定语从句。eg: 1.This is the school (that/which)we visited last year. (限制性定语从句) 2.The weather turned out to be very good,which was more than we could expect. (非限制性定语从句) 3.The days are gone when physical strength was all you needed to make a living.( 间隔性定语从句)注:定语从句和非限制性定语从句的区别限制性定语从句无逗号隔开、不可缺少、起修饰限制