Mine or me? Please help!

[MANH NGUYEN]

Thank you very much! I ased that question because I didn't understand the reason why we use:
1> The car of Ken's............but The book of my friend........( I think my friend's)
My friend and Ken's are not from the same word type.

To tell the true, I still don't understand thouroughly, but your helps are very helpful!

I think that you have been possessed or haunted by 'S!!!

The car of Ken
or
The book of my friend

Definitely no possessive case here! Except when you need to do so, and
you must have good reasoning....Of course, you must master the English Grammar, or your version/translation would be very sloppy!!!