Dear Li Hua,
I am really upset at present. I had many friends, but now none of them want to talk to me. At lunch time, nobody likes to share a table with me . I feel really puzzled and lonely . And I can't understand why they are trying to avoid me. Would you please give me some advice? Thank you!
I’m sorry to hear +从句...【听说......我很难过。】（用于理解对方的情况）
Have some trouble doing sth.【做某事遇到困难】
Get along with...【与......相处】
Here are some suggestions for you.给你一些建议。
Here is a book for you.给你一本书。
①You’d better do sth你最好做某事。（用于提建议）
②Why not open your mind to do sth？为什么不敞开心扉去做某事（用于提建议）
名词性从句（主语、宾语）：what get sb into+名词【什么事情让你......】
例如：Please tell me about what got you into such a sadness.
find out your turn to sb for advice找某人提建议
It shows that+从句...【这表明......】（用于解释或说明前句）
③It is wise to be ready to do sth【准备做某事是明智的】（用于提建议）
I hope +从句...【希望......】
I’m sorry to hear you have some trouble getting along with your friends. Here are some suggestions for you.
Firstly，you’d better find out what got you into such a mess，and then your turn to your teachers or parents for advice.Secondly，why not open your mind to communicate with your friends frankly. It shows that you really cherish the friendship and value their viewpoints. Besides，in your daily life，it is wise to be ready to help your friends and people around you. In this way，you cannot only win back your old friends but also make some new friends.
I hope my suggestions can make a difference. I will continue to offer help if you need.