I'll miss you.
我會想你的。
I wish I could go with you.
我真希望能和你在一起。
Give me a call sometime.
有空給我打電話。
Call me sometime.
有空打電話。
Let's get together again sometime.
我們什么時候再聚吧。
Let's keep in touch.
保持聯(lián)系。
Don't forget to write.
別忘了寫信。
Please give my regards to your family.
請代我向你的家人問好。