I’m glad to receive your letter for asking me how to …….
I’m glad to receive your letter asking for my advice on …….
我很高兴收到你的来信，问我关于……的`问题
I’m very glad to receive your letter and it’s a pleasure to tell you something about……
我很高兴收到你的来信，我很荣幸告诉你关于……的问题
After I read your letter, I am sorry to know that……读完你的信，我很难过地知道……
You asked me for my advice on …… and I will try to make some suggestions.
你询问我关于……的意见，我试着给一些建议。
Thanks for trusting me. It’s my pleasure to give you some suggestions/advice.
谢谢你相信我，我很荣幸给你一些建议
I am very glad to hear that you want to…听说你想要……我很高兴
I know you have trouble in…after reading your letter读完你的信后，我知道你做…有困难
However, the situation is easy to change if you take my advice. Here are some tips to help you. / Here are a few suggestions.然而如果你采取我的意见，这个情形很容易改变，这是给你的一些建议 I think you can make it if you follow the advice below.
I am writing to share some advice with you 我写信和你分享一些建议
In my personal opinion, it would be wise of you to take the following action.
在下认为， 如果你能采取以下措施，将是一种明智的选择。
