写作“三步走”：
表达感谢之情并说明原因—>提及自己曾受到对方的帮助—>再次感谢并表达回报愿望。
Tips:
表达的感激之情要恰到好处，不要过于夸张。
建议在结尾尽量表达希望回报对方的愿望，显得更加真诚。
Directions:
You have just come back from a student exchange program in the U.S. Write a letter to your host family in New York to express your gratitude for their hospitality, describe the help they gave you, offer to repay their help and invite them to visit you.
You should write about 100 words on ANSWER SHEET 2.
Do not sign your own name at the end of the letter. Use “Li Ming” instead.
Do not write the address.
范文：
Dear Mr. and Mrs. Smith,
I am now back to China safe and sound. In this letter I would like to convey my heartfelt thanks to you and your lovely children for your kindness and hospitality to host me when I was in New York. Your generous help and tender care made me feel warly welcomed and transformed my first American trip into a beautiful memory.
I do hope that your whole family pay a visit to China in future, so that I could have the opportunity to repay your friendship. I assure you that you would enjoy visiting here as I did at your home.
I feel obliged to thank you once more.
Love,
Li Ming
译文：
亲爱的史密斯先生和夫人：
我现在安全健康地回到了中国。通过这封信，我想表达我对于您二位和你们可爱的孩子们衷心的感谢，感谢您对我纽约之行的热情招待。你们的慷慨和对我的关心使我此行更加愉快，而我的第一次美国之行也因此变成了美好的回忆。
我非常希望你们能在将来访问中国，让我有机会回报你们的友谊，我保证你们会像我在纽约那样度过一个愉快的时光。
再一次向你们表示感谢。
爱你们的，
李明
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