I'll come back later.

I'll stop by later. 我会顺便来的。

It's getting late.天不早了.

Let's go home.

I've got to go. *口语用法。（我得走了.）

I have to go. /I have to get going.

I'll miss you. --I'll miss you, too. 我会想你的！

I'm gonna miss you.

I wish I could go with you. --So do I.

我真希望能和你在一起.

Please give my regards to your family.

请代我向你的家人问好！

I will. They asked me how u were doing.

You must come back. 你一定回来啊.

Give me a call sometime.有空给我打电话.

Call me sometime.

Thank you. I enjoyed it very much.

Let's get together again sometime.

我们什么时候再聚吧.

Please write me a letter. 请给我写信.

I'll write you a letter. 我会给你写信的.

Let's keep in touch. *keep in touch with... 让我们保持联系.

Will do.

Let's keep in touch with each other.

Don't forget to write. --I won't.

别忘了写信.