He said that he was always right.Then I discoverd,which was news to me,____ he was wrong请问为什么填that

He said that he was always right.Then I discoverd,which was news to me,____ he was wrong请问为什么填that
He said that he was always right.
Then I discoverd,which was news to me,____ he was wrong
请问为什么填that

He said that he was always right.Then I discoverd,which was news to me,____ he was wrong请问为什么填that
which was news to me为插入语 可以不看
he was wrong 是由that 引导的宾语从句
原句是Then I discoverd that he was wrong.

then i discovered that he was wrong which was news to me.

把中间省去，看成 discoverd that he was wrong

which was news to me为插入语 可以不看
he was wrong 是由that 引导的宾语从句
原句是Then I discoverd，（which was news to me）, that he was wrong