物主代词

I have a red car. It is mine.(mine = my car.)
我有一辆红色的车。它是我的（车）。

物主形容词 — 物主代词
my — mine
your — yours
his — his
her — hers
our — ours
their — theirs

Your house is small. 你的房子很小。
我的房子比你的大。—>
My house is bigger than yours. (yours = your house)

His car is big. 他的车很大。
但我的车比他的更大。—>
But my car is bigger than his. (his = his car)

I like her car. 我喜欢她的车。
我喜欢她的。—> 
I like hers.

This is our car. 这是我们的车。 
这是我们的。—> 
This is ours. 

This isn't our car. 这不是我们的车。
是他们的。—>
It's theirs. (theirs = their car)