1.一般过去式2.一般现在式3.一般将来式4.现在完成式5.信的格式的比较级形式6.过去进行式
參考答案:Dear David,
I'm glad you'll come to Beijing to learn Chinese. Chinese is very useful, and many foreigners are learning it now. It's difficult for you because it's quite different from English. You have to remember as many Chinese words as possible. It's 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. I'm sure you'll learn Chinese well.
Hope to see you soon in Beijing.
Yours,
Wang Ming
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