Tā hé nǚpénɡyǒu yìqǐ zhù.

他和女朋友一起住。

He lives with his girl friend.

Notes:

(tā): he

(hé): with, and

女朋友(nǚpénɡyǒu): girl friend

一起(yìqǐ): together

(zhù): to live

Example:

A:他一个人住吗?

     Tā yíɡerén zhù mɑ?

     Does he live alone?

B:他和女朋友一起住。

     Tā hé nǚpénɡyǒu yìqǐ zhù.

     He lives with his girl friend.

Level: