【答案解析】
[写作要求]

文章基本内容 (此信应包含以下要点)	1．提及从机场回家所花的时间 　2．对照片进行描述 　3．说明在何处找到丢失的手表 　4．提及手表的归还 　5．选择届时想做的事情及原因
语法与结构	恰当时对事件进行说明、描述并进行询问和提供相关信息
文章结构及连贯性	1．正确的信函回复格式，阐明写信的目的 　2．观点组织得当 　3．恰如其分的开头和结尾
适用文体及格式	非正式文体
目标读者感觉	充分了解作者阐述的相关信息

　
[参考范文]
Dear Sam,
I'm glad to get your letten To answer your questions, I got caught in a huge traffic jam on the way home! Apparently a chemical factory exploded near the highway, and everyone had to take a long detour It took over three hours to make the trip back. Still, I'm glad we got to drive there togethen
Your pictures are great-my favorites are the ones from the restaurant where we ate after you arrived, I've never had such an odd waiter, It was a very interesting evening, and the food was great-and beautiful!
I found your watch—it was under the bed in my room. I'm not sure how it got there! Should I send it to you now, or should I just bring it to London when I come to visit?
I would love to see your uncle's farm. Embarrassingly enough, I've never been to a real farm. We city folk lead a very sheltered life. If I could ride a horse, or a cow, I think I'd never forget it.
I can't wait to see you!
Yours truly,
Bob