为什么不用my good friend stand on the right而用my good friend is on

为什么不用my good friend stand on the right而用my good friend is on the girl on the bike is my good friend 1.You are my first good friend here.这里为什么用my而不用my the? Look at the photo ,the boy__ them is my good friend.用on in b The pretty girl [ ] is my good friend.[请说明为什么] The girl reading a book is my good friend."reading"前面为何不用加be My good friend是什么意思 my good friend 【My good friend】 第一：My good friend The boy is Tom.() is my good friend Lily is my good friend.She is the same ____me.