Abstract:Politeness is generally accepted as an important feature in human communication. Writing of business correspondence should also observe this guideline.

　　　With advancing progress of global economic integration, international trade competition became more and more vigorous. The importances of business letter writing skills are more prominent. Due to the widespread use of Internet, e-mail play a more and more important role than before, much business information are transmitted by e-mails. But the traditional business letters are still playing an important role in business activities. This paper analyzes the substantial use of politeness in business correspondence, especially, the application and performance of offer writing in business correspondence. One should employ politeness tactics appropriately to achieve the purpose of more efficient business communication. Then it puts forward a viewpoint that appropriate use of politeness principle in offer writing comes to promote business which can be going on well.

　　This study, by reference to the literatures analysis, integrated a variety of fresh point of view, coupled with their own point of view, used the politeness principle to make a detailed explanation of writing skills of offer. I hope this study can improve the level of international trade offer writing.

Key words: offer; politeness principle; writing skills; dealing with e-mails

摘要:礼貌原则是人类行为的基本原则之一，是人类交际的一个重要特点。商务信函写作当然也要遵循这一原则。

　　　全球经贸的一体化在不断推进中，国际贸易竞争日趋激烈，商务信函写作技巧的重要性也更加突出。由于网络的普遍使用，电子邮件在商务中的作用与日俱增，许多商务往来信息都通过电子邮件来传递。而传统的商务信函也仍然在商务活动中起重要的作用。因此研究商务信函和电子邮件中礼貌原则是本文的重点。本文分析了礼貌原则在国际商务信函中的运用和表现,尤其是外贸函电中发盘中的应用与表现，探讨了商务信函的语言特点与礼貌原则的关系，并提出适时使用礼貌原则可以促进商务活动的顺利进行的观点。

　　　本次分析中，通过对国内外文献的参考分析，综合各种鲜明的观点，加以整合，在加上自己的观点分析，利用礼貌原则对发盘写作技巧进行详细的解说。我希望本研究能提高国际贸易中发盘函的写作水平。

关键词：发盘 ；礼貌原则 ；写作技巧 ；处理电子邮件