He is my brother对my brother提问是Who is him还是Who is he .为什么?

问题描述:

He is my brother对my brother提问是Who is him还是Who is he .为什么?
为什么不能用him.宾格

这样理解能容易一点:把who is he变成汉语语序,he is who,他是谁.显而易见,是主格而不是宾格~