1.This desk is white.
= This is a white desk.
2.如果是对my sister划线提问,则是：Who is the girl?
如果是对my划线提问,则是：Whose sister is the girl?
This desk is white 的同意句
1.This desk is white.
= This is a white desk.
2.如果是对my sister划线提问,则是：Who is the girl?
如果是对my划线提问,则是：Whose sister is the girl?