I’m going back to London next week.

我下周回伦敦。

A: When will you go back to London?

A: 你什么时候回伦敦？

B: In 5 or 6 days. I’m going back to London next week.

B: 五、六天后。我下周回伦敦。

A: And when will you return to Beijing?

A: 你什么时候再回北京？

B: Oh, in a couple of weeks. I’m only away for a short time. I’ll be back around the 20th.

B: 噢，两三周。我只离开一小段时间。我大约20号左右回来。