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。
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。
1.Hope you are well.
2.Have not heard from you for a long time, hope everything is going well with you.
3.How have you been recently?
4.How are you doing recently?
5.It was good to hear from you. I am very well, hope you are the same.
6.It is my great honor writing to you.