一、who是主格，一般用在动词前面.whom是宾格，一般用在介词或动词后面.whose是所有格，意思是“谁的",一般用在名词前面二、who，whom，whose的具体区别和用法如下：1）who代表人，在从句中作主语：例如：The man who robbed her has been arrested. 抢她东西的人被捕了。The girls who served in the shop were the owner’s daughters.在商店里接待顾客的那些姑娘是老板的女儿。The girl who spoke is my best friend. 讲话的姑娘是我最好的朋友。2）whom 也代表人，但在从句中作宾语或介词宾语：例如：The man whom I saw told me to come back today.我见到的那个人让我今天再来。The girls whom he employs are always complaining about their pay.他雇佣的姑娘们老是抱怨工资太低。注意：在口语中常可用who代替， 也可省略：例如：The man(who) I saw told me to wait. 我见到的那个人让我等一会儿。但紧跟介词时只能用whom：The man to whom I spoke was a foreigner. 我找他讲话的那人是外国人。3）whose表示“某人的”，在从句中作定语：例如：A mental patient is one whose mind is diseased. 精神病人就是脑子有病的人。I know a boy whose father is an acorbat. 我认识一个男孩，他父亲是杂技演员。注意：有时可指无生命的东西:例如：He saw a house whose windows were all broken. 他看见一所房子，窗子全都破了。He showed me a machine whose parts are too small to be seen.