One's own有许多用法，如：
a．作定语：
Attend to your own（= your，but not any other's） business．
I gave him my own share．
Is this car yours？ It is mine． It is my own（car）．
She wants to do it in her own way（or manner，fashion）．
b．和of连用：
He has a car（or a store，a servant） of his own．（比 his own car，store，or servant更强调）
The village has a school of its own．
He spends plenty of money not of his own．
