Those are his friends.(改为否定句,疑问句并做回答)
问题描述：
Those are his friends.(改为否定句,疑问句并做回答)
答
who are his friends?
those are his friends
答
Those aren't his friends.
Are those his friends?
Yes, they are.
No, they aren't.
答
Those are not his friends
are those his friends
yes they are
no they aren't
问过了..