下列英语短语对吗?a friend of mine a photo of him

下列英语短语对吗?a friend of mine a photo of him a friend of mine. a friend of mine a photo of him和a photo of mine的区别 英语作文：A friend of mine A Good Friend of Mine 英语作文 a good friend of Peter and mine对吗? 关于a friend of mine This is a photo of mine and __(his him) 答案为him ---为什么不是his a photo of me a photo of myself a photo of mine 有什么区别 a friend of mine= my friend a photo of him还是a photo of his