Dear David,
Im glad youll come to Beijing to learn Chinese. Chinese is very useful, and many foreigners are learning it now. Its difficult for you because its quite different from English. You have to remember as many Chinese words as possible. Its also important to do some reading and writing. You can watch TV and listen to the radio to practise your listening. Do your best to talk with people in Chinese. You can learn Chinese not only from books but also from people around you. If you have any questions, please ask me. Im sure youll learn Chinese well.
Hope to see you soon in Beijing.
Yours,
亲爱的大卫,
我很高兴你能来北京学中文。汉语非常有用，许多外国人现在正在学习汉语。它对你来说很困难，因为它与英语有很大的不同。你必须记住尽可能多的中文单词。阅读和写作也很重要。你可以看电视，听收音机练习听力。尽最大努力与中国人交谈。你不仅可以从书本上学到汉语，还可以从你身边的人那里学汉语。如果你有什么问题，请问我。我肯定你会学好中文的。
希望不久能在北京见到你。
你的，