在选择题中,同时有a friend of my father 和 a friend of my father's 选什么?比如：----Do you know the man who is playing tennis there?----Certainly.He is a friend of _______.A.my father'sB.my father我觉得A和B，都说得通，但答案为A求解释
问题描述：
在选择题中,同时有a friend of my father 和 a friend of my father's 选什么?
比如：
----Do you know the man who is playing tennis there?
----Certainly.He is a friend of _______.
A.my father's
B.my father
我觉得A和B，都说得通，但答案为A
求解释
答
a friend of 后面跟名词性物主代词是固定用法.
就比如只能说a friend of mine,不能用a friend of me.
你可以这样理解,of代表一种归属,a friend of my father's,就是我爸爸的朋友们中的一个朋友,
如果用my father,并不是代表一个群体,所以不能用归属关系.