Which of these is yours? 哪一本是你的？
2)宾语：
What do you mean? 你是什么意思？
Which do you like better? 哪一个你更喜欢一些？
Whose have you chosen? 你选了谁的？
3)表语：
What’s her name? 她叫什么名字？
Whose is it? 这是谁的？
4)定语(这样用时有些字典标作形容词)：
What time does the train leave? 这列火车什么时候离开？
Which room shall we stay in? 我们住哪间房？
Whose passport is this? 这是谁的护照？

考点名称：助动词的单数第三人称形式

• 助动词的单三形式：
  

  助动词	be	do	have	shall	will
  单三形式	is	does	has	shall	will