定语从句的先行词是什么情况下可以省略

Question

如题所述

Answer 1

当先行词被序数词修饰时;当先行词被形容词最高级修饰时;当先行词被the very、  the only修饰时;当先行词前面有who、which等疑问代词时;当先行词为人与动物或 人与物时，定语从句只能使用that。

当先行词为all, much, none, something, nothing, everything, the one, few, little, many, anything等不定代词时。当先行词被only, any, few, little, no, all, many, much等不定代词修饰时。当先行词被序数词、形容词最高级以及the only, the very, the next, the last等修饰时。只能用that。