Tom is my friend.He is the best friend of me.哪里错了

Tom is my friend.这句没错.
he is the best friend of me.这句话语法有问题,应该是:he is the best friend of mine.
这牵扯到的是名词所有格的问题.Me只能用于宾格,意思是"我".Mine是物主代词所有格,意思是:我的.