this is the boy i saw yesterday请问这句话既然是个句子,那么主语和谓语各是什么,

问题描述:

this is the boy i saw yesterday请问这句话既然是个句子,那么主语和谓语各是什么,

This is the boy I saw yesterday.
This 主语
is 谓语
the boy 宾语
I saw yesterday 插入语(后置定语;定the boy)