宾语从句变反意疑问句是变从句还是变主句?

问题描述:

宾语从句变反意疑问句是变从句还是变主句?

如果宾语从句的主句是第一人称I或we时,变反意疑问句时看从句.如果主句不是第一人称时则看主句.
I think he is a good student ,isn’t he
They want to know if he is a good student ,don’t they