1）用于疑问句，做特殊疑问词。who谁， whose谁的。如：Who is the girl？那个 女孩是谁？Whose cat is that？那是谁的猫？2）用于定语从句时做连接代词，who指先行词人， whose指先行词 人的。如；The boy who is singing is called Tom。正在唱歌的那个男孩叫汤姆。The boy whose father is an engineer is called Tom。他的爸爸是工程师的那个男孩叫汤姆。希望对你有所帮助。学习进步、快乐！