我想问一下，是以书信的形式写还是？
追问发电子邮件的形式
追答只会书信。电子邮件的忘记了=_=。应该差不多吧
追问哦！好吧
追答多少字？
署名有要求还是随便？
追问60～80词
随便
追答Dear Tim,
Hey, Tim, how's it going ? A few day ago, I was heard from you. I know, you are worried about your Chinese. Now, I would like to give you some advice in Chinese.
First, you should spend some times in remembering word's means.You can go to library to look through dictionary if you really forget its means.
Next, you can learn Chinese by canton or some interesting pictures.
At the end, Chinese culture is colorful, only you search for it bit by bit, will you learn Chinese better.