对主语提问用who,例如：你是谁?-who are you?谁有钱?who has money?
对宾语提问用whom,例如：你爱谁?whom you love?他打伤了谁?whom he hurts?
对“谁的”提问用whose,whose后跟名词,例如：谁的钱丢了?whose money losts?