you的名词性物主代词是 yours。

yours：pron.你的；您的；你们的；用于书信结尾的签名前

It's no business of yours who I invite to the party.

你无权过问我邀请谁参加聚会。

Just sign on the dotted line and the car is yours.

只要大笔一挥签个字，这车就归你了。

I bought the same car as yours.

我买了一辆车，和你那辆一模一样。