Translation of "Mate" in Chinese

I'm Paul, your room mate.

我是保罗，你的室友。

My beer was finished off by my room-mate.

我的啤酒被我的同屋喝完了。

I don't even know what you are called, mate.

我連你叫什麼都不知道。

After my work mate quit his job he moved to Shanghai to teach English.

我的同事辞职了，后来去上海教英语。