星级典句

第一句：I'm going back to China tomorrow.
我明天回中国。

A: Did you enjoy the trip?
这趟旅行玩得愉快吗？
B: I really enjoyed the trip. By the way, I'm going back to China tomorrow.
这趟旅行真的很愉快。顺便说一下，我明天回中国。
A: Oh, can't you stay longer?
哦，不能多呆一段时间吗？

第二句：When are you off?
您什么时候离开？

A: Hello, Mr. Xue. I've come to say goodbye.
您好，薛先生，我是来和您道别的。
B: You are leaving so soon? When are you off?
您这么快就要走了？您什么时候离开？
A: Early tomorrow morning.
明天一大早。

旅行结束返程时可向当地认识的朋友道别，说明自己回国的时间等，相关的表达法还有：

I am returning to Japan tomorrow.
我明天回日本。

I have to be going now.
我要告辞了。

Well, I must be off now.
嗯，我必须回去了。