Directions： For this part，you are allowed 30 minutes to write a letter to express your thanks to one of your friends who helped you most when you were in difficulty。 You should write at least 120 words but no more than 180 words。
第一段： 写出写信目的`。 （表达感谢）
第二段： 阐述感谢的原因。
第三段：再次表达感谢，并可表述希望有机会可以给对方回报。
参考范文
Dear Mary，
I would like to take this opportunity to express my heartfelt gratitude to you for your help when I was in difficulty。 You have been very kind and helpful since we knew each other。
Last week， I caught a bad cold and had to stay at home for a week。 When I was worrying about the lessons， you came to my home after school and helped me with every subject。 With your help， I didn’t fall behind others。
Again， thanks so much for your enthusiastic help。 Even though you are to about to go abroad for further education I know that I will always stay in touch with you。 I wish you every success in the future and I hope we can exchange more viewpoints on study。
Please keep in touch， and drop in and visit us whenever you are in this part of the world。
Very sincerely
Peter
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