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。