摘　 要

随着国际贸易蓬勃发展，英语商务信函逐渐成为贸易活动中不可缺少的部分。礼貌原则和合作原则作为语用学中的两个重要原则，在英语商务信函写作中发挥着重要作用。在商务信函写作中仅有合作原则是不够的，还应该遵循礼貌原则。该二原则互相对立统一，直接影响着商务信函的写作质量。本文阐述了Grice的合作原则和Leech的礼貌原则，并联系英语商务信函的实例，分析合作原则和礼貌原则在商务英语信函中的应用，从而让人们在商务沟通中更好地了解合作原则和礼貌原则的重要作用。写作目的不同，运用的方法就不同。只有根据不同情况进行客观处理，才能更有效地运用两个原则来实现交际意图。

关键词：合作原则；礼貌原则；商务信函；应用
 
Abstract

In the process of globalization, interaction between China and foreign countries is becoming unprecedentedly frequent. And in the course of association with the foreigners, as a vehicle of international business transaction, English business correspondence is widely used in our daily life and routine duties. Cooperative principle and politeness principle are the two essential principles in pragmatics and they play a significant role in English business writing. However, mere cooperative principle is far from enough to reach the communicative goals in business letter writing. Politeness principle should also be adopted to arrange the letter. These two important theories are not only opposite and complementary to each other but also united. They strongly influence the quality of Business English letters. In this article, Grice’s cooperative principle and Leech’s politeness principle are introduced. It talks about the applications of CP and PP in different types of English business correspondence. This thesis tries to reveal many linguistic features of different business correspondences on the basis of theories of pragmatics, aiming to tell the businessmen how to write English business correspondence properly, furthermore, making the business communication fulfilled smoothly and even doing well to the business transaction among our country and foreign countries. Different purpose results in different writing style. Only when we consider different situations and make objective decisions, can we use cooperative principle and politeness principle in a more efficient way.

Key words: cooperative principle; politeness principle; business letter writing; application