a friedn of my father 与 a friend of my father's 的区别,另外有a friedn of my father这种说法吗?

问题描述:

a friedn of my father 与 a friend of my father's 的区别,另外有a friedn of my father这种说法吗?

a friend of my father's 是标准的说法
a friedn of my father 口语中会出现,但语法上来说不是标准的.