如何区分a picture of my friend 与a picture of my friend's?

如何区分a picture of my friend 与a picture of my friend's? 英语Hello!My friend.here is a picture of my____ .my name is ja a picture of my father a picture of my family 英语翻译a friend of my father's还是a friend of my father,如何辨别, 1.a friend of my father 与a friend of my father's有什么区别, a friend of my father与 my father's friend区别 a friend of mine= my friend this is a picture of my mum's birthday party a friend of my brother 阅读理解Here is a picture.It's a picture of my classroom.In the a friend of my father's 与 one of my father's friends 怎么翻译