Dear Chen Lei,
You wrote that you are very worried your friend. I understand quite (good) that you are anxious and feel terrible. You think that your friend (play) computer games too often and spends too much time online.
I recommend that you talk to your friend about his (behave). It is not unusual for teenagers of your generation (attract) by computer games and the online world. (spend) too much time online is unhealthy and makes very difficult to focus on other things in life. Some students even become (addict) to the Internet and cannot concentrate on school and family life. I think you should encourage your friend to try new (hobby). Why not discuss the problem together? I am sure he will listen to you, since you are (he) good friend.
Yours,
Susan Luo
