Is that book the one he borrowed on Friday?是定语从句吗?

问题描述:

Is that book the one he borrowed on Friday?是定语从句吗?
one 在这里的用法,并翻译整句话,

是定语从句
那本书就是他星期五借走的那本吗?
把疑问句还原一下可知;
that book is the one he borrowed on friday.
定the one (那本书),在从句中做宾语,所以可省略连接词which或that.
如果没有the one 这个定语从句便没有先行词,所以必须有.那本书就是那本书吗?为了避免重复,就用the one.