定语从句中什么时候只能用that
问题描述：
定语从句中什么时候只能用that
答
长点儿心吧 回答的已经比较全面了！
答
当先行词（被定语从句所修饰的名词）前有序数词、形容词的*、all, both等词修饰时，或先行词既有人又有物时，只能用that , 不能用which.
答
宜用that,不用which或who,whom的场合 1. 当先行词是不定代词或被不定代词修饰时.如 Tell me everything that you know. / All the people that are working are my workmates. 2. 当先行词是序数词或被序数词修饰时...