Who has 和Who have 的区别.如：Peter has a black bag.对划线部分（Peter）提问.是要用Who has 还是 Who have Who has 和Who have是在主语（Peter）还是在宾语（a black bag）上区别?如果 是 Peter has black bags.那还是用Who has 提问？
问题描述：
Who has 和Who have 的区别.
如：Peter has a black bag.对划线部分（Peter）提问.
是要用Who has 还是 Who have
Who has 和Who have是在主语（Peter）还是在宾语（a black bag）上区别?
如果 是 Peter has black bags.那还是用Who has 提问？
答
Peter have black bags.
Who have black bags?
答
因为你的原句是一个人单数主语,因此要用who has单数提问
Who has a black bag?
Peter has a black bag.
have前面要用复数的主语