This book is different from the one that I read yesterday.为什么使用that

问题描述:

This book is different from the one that I read yesterday.为什么使用that
我的意思是为什么不可以省略that?that为定语从句中的宾语,应该可以省略的啊?

拆成两个句子:
This book is different from the one.
I read the book yesterday.
宾语从句,且没有强调,可以省略that.