hair whose band is this 连词成句

Whose hair band is this ?这是谁的发带?这是谁的发结? 再问： hair whose band is this 连词成句 再答： Whose hair band is this ？再问： whose this hair band is对吗 再答： 不对。再问： 为什么 再答： whose this hair band is 语法有错 谁的发带 是 whose hair band 比如说：这本书是谁的？ Whose book is this？ 同样的道理