He bought the same coat that i was wearing yesterday?

问题描述:

He bought the same coat that i was wearing yesterday?
为什么不能用that?

这里的从句是用来修饰coat的嘛 所以问哪一件是用which one?--- which i wore yesterday.that在这里表达的关系不能很好的把前后两句衔接起来 understand?