Question

This is the book which I was telling you about.从句

This is the book which I was telling you about.从句里面的which可不可以用what替代？从句里的which是什么意思？从句主谓宾是什么。句子的主系表是什么

Answer 1

This is the book which I was telling you about.
主句主语是：This ,谓语：is the book. 也可以说the book是表语。
which不可用what替代。因为是定语从句，what可用在名词性从句中，如：主语从句，宾语从句，表语从句等 。但不用在形容词性从句中。
which定语从句中当about的宾语，指主句中的先行词：the book.从句相当于：I was telling you about the book.

追问

整个从句是修辞the book?

追答

定语从句，就是修饰先行词的。意思：这是我当时要告诉你的那本书。

追问

This是主语，is是系动词，the book是表语对吗

请问从句里面的主谓宾是什么

追答

This是主语，is是系动词，the book是表语对吗?正确。
I was telling you about
主语：I
谓语：was telling
宾语：you
which＝the book当about的宾语。

追问

宾语不是about吗