下面的例题是由 that的先行词作表语的定语从句么?

题目

下面的例题是由 that的先行词作表语的定语从句么?
the school is quite different from the one that it used to be
老师没说that可以省略啊 什么事the one的具体用法呀

答案

在不定代词anything, nothing, the one, all, much, any, few, little等作先行词指物时,只用that不用which.
在定语从句中关系代词做从句的宾语时可省略.
如the school is quite different from the one that it used to be 中
that做 used to be 的宾语,从句原为it used to be that/the one ,that代指先行词the one .故可省略that.