This is a fact with which every schoolboy is familiar

题目

This is a fact with which every schoolboy is familiar
这个句子是宾语从句吗?which 有没有在从句中做成分?为什么有个with
麻烦解析一下这句

答案

是宾语从句,
be familiar with 是一个短语,对...熟悉的意思.which 引导的从句做fact的宾语补足语.
这个句子=This is a fact which every schoolboy is familiar with