他tā在zài办bàn公gōng室shì工gōng作zuò。

He works in the office.

我wǒ们men的de办bàn公gōng室shì在zài三sān楼lóu。

Our office is on the third floor.

请qǐng到dào我wǒ办bàn公gōng室shì来lái。

Please come to my office.

我wǒ的de办bàn公gōng室shì在zài三sān楼lóu。

My office is on the third floor.

他tā每měi天tiān去qù办bàn公gōng室shì。

He goes to the office every day.