本篇书面表达属于应用文。要求考生写一封信给某航空公司，告知航空公司你在机场遗失了行李箱，请航空公司帮你找回。
【详解】第一步：审题
体裁：应用文
时态：根据提示，时态应为一般现在时
结构：总分法
总分法指把主题句作为总说，把支持句作为分说，并以这种方式安排所写内容。
要求：1. 陈述写信原因；
2. 描述行李箱；
3. 期待回复并表示感谢。
第二步:列提纲 （重点词组）
get lost；ask for sb.’s help；personal files；scientific materials；buy sth. for sb.；hear from sb.
第三步：连词成句
1. I found that my suitcase got lost when I arrived at the airport.
2 I am therefore writing to asking for your help in finding my suitcase.
3. It contains many important personal files and some scientific materials.
4. There are also some presents that I bought for my family members and friends.
5. I’m looking forward to hearing from you soon.
(根据提示及关键词（组）进行遣词造句，注意主谓一致和时态问题。）
第四步：连句成篇（衔接词）
1.表文章结构顺序：First of all, Firstly/First, Secondly/Second… And then, Finally, In the end, At last, Last but not least
2.表并列补充关系：What is more, Besides, Moreover, Furthermore, In addition, As well as, not only…but (also), including, also
3.表转折对比关系：However, On the contrary, but, Although + clause (从句), In spite of + n/doing, On the one hand…,On the other hand… Some…,while others…,as for, so…that…
4.表因果关系：Because, As, So, Thus, Therefore, As a result
5表换一种方式表达：In other words, that is to say,
6.表进行举例说明：For example; For instance; such as + n/doing
7.表陈述事实：In fact, frankly speaking
8.表选择：either…or…，or
连句成文，注意使用恰当的连词进行句子之间的衔接与过渡，书写一定要规范清晰。
第五步：润色修改
【点睛】范文内容完整，结构严谨，要点全面，语言规范，语篇连贯，词数适当，上下文意思连贯，符合逻辑关系。作者在范文中使用了主从复合句，如I found that my suitcase got lost这句话中用了that引导的宾语从句，如some presents that I bought for my family members and friends这句话中用了that引导的定语从句；使用了非常好的短语，如ask for sb.’s help，personal files，buy sth. for sb.，hear from sb.等，为文章增色不少。全文中没有中国式英语的句式，显示了很高的驾驭英语的能力。另外，文章思路清晰、层次分明，上下句转换自然，为文章增色添彩。
苏19057182-3号