css如何设置隐藏:1.a friend of my father's 与a friend of my father 有何区别是？

1.a friend of my father's 与a friend of my father 有何区别是？ a friend of my father? a friend of my father's? a friend of my father和a friend of my father's哪个对？有什么区别？ he is a friend of mine和he is my friend的区别？ The boy ______the blue shorts is my good friend.A.onB.in C.of D.over My friend, Bob was robbed ____ a bag full of treasure last week. “他是我的一个朋友”岂要这样说“He is a friend of my”，不是“He is a friend of me"这样子说吗？ a friend in word is never a friend of mine a letter to my injured friend写封信 初一英语作文：A Friend of Mine