名词性所有格，同类词有：ours，yours，theirs，hers，his，its
mine: sth belong to (属于)me= sth is mine=I am the owner of sth
mine 名词性物主代词：
His cap is yelloe，mine is red.
I为主格，作主语：
I have a red cap.
my 形容词物主代词：
My cap is red.
me 宾格，通常作宾语：
The red cap belongs to me.
常用物主代词变形：
you-you-your-yours， he-him-his-his， she-her-her-hers， we-us-our-ours，they-them-their-theirs， it-it-it's-its .
