1、How is it going? 最近怎么样?

2、I am glad to receive your letter.很高兴收到你的来信。

3、You asked me about(+problem question 等），now let me give you some advice.你在来信中询问我，现在，让我给你一些建议。

4、It has been a long time since we met.我们很久没见面了。

结尾：

I am looking forward to receiving your letter.我期待着你的来信。

2、Thank you in advance.提前谢谢你。

3、Please write to me as soon as possible.请尽快回信。

4、Good luck |Best wishes.祝你好运。