1．From your letter, I have learned a lot about something.
从你的来信中，关于一些事情我了解了许多。
2．Now, I am eager to know something about the problem, especially something about its reason.
现在，我渴望知道关于这个问题的某些事情，尤其是关于它的原因的事情。
3．I would appreciate it if you could do something.
如果你能做些事情，我将不胜感激。
写作模板
Dear ××，
I am really pleased that you are writing to me for ____________. I am glad to hear from you ____________. I am expecting to ____________ sometime in the near future.(明确写信的对象和写信的目的)
From your letter, I have learned a lot about ____________. Now, I am eager to know ____________ about the problem, especially something about ____________. I would appreciate it if you could ____________．(信的重点内容)
I am looking forward to your reply at your earliest convenience. Please remember me to your family.(信的结束语)
Yours，
××
