开头：

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：

1.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 wirte to me as soon as possible.请尽快回信

4.Good luck |Best wishes.祝你好运

这些都是我们平常背的，希望有帮助。