Study on Principles in Business Letter Writing系 别：商贸系专 业：市场营销学 号：3070604姓 名：孙欣慰2010 年 5 月 3 日Study on Principles in Business Letter Writing30706042contentsAbstract .3Introduction.4Chapter 1 A Brief Study of English Business Letters .61.1 Definition Of English Business Letters .61.2 The Classification of English Business Letters .71.3 Stylistic Features of English Business Lettersseven Cs .91.3.1 Completeness.91.3.2 Concreteness.101.3.3 Clearness.111.3.4 Conciseness.111.3.5 Courtesy.121.3.6 Consideration.131.3.7 Correctness .13Chapter 2 The Application of Other principles in business letters writing .162.1 Cooperative principle.162.2 Politeness principle.16Conclusion .17References .19Study on Principles in Business Letter Writing30706043AbstractEnglish Business letters are important means and play a significant role in business activities .English business letters are regarded as the lifeline of modern business communication. The significance of English business letters determines the application of cooperative strategies and politeness strategies and others, that is, what language forms are used to present the politeness of the English business letters. The paper, on the basis of cooperative principle and politeness principle introduces the definition and stylistic features of English business letters, and deals with the 7C principle, revealing the application of cooperative principle and politeness principles in English business letter writing. The thesis provides a descriptive analysis on the application of cooperative. The thesis provides a descriptive analysis on the application of cooperative strategies and politeness strategies in the English business letters. However, the application of politeness strategies is variously manifested, among which similarities and differences coexist. Hopefully, this thesis can be of some help and give some inspiration to business people working on English business letter writing.Key words: English business letters; 7Cs ; Principle Study on Principles in Business Letter Writing30706044IntroductionBusiness letter referred in this study is a kind of letter dealing with business activities in international trades. In this modern society, it is still the major means of written communication in business. “Broadly speaking, the functions of a business letter may be said to be: firstly, to ask for or to convey information; secondly, to make or to accept an offer; thirdly, to deal with matters concerning negotiation of business” Good communication is so essential in business activities that it requires principles to guide communication. Business letters, as one of a firms main means of communication with others, its quality is one of important elements for successful business, thus it needs to be attached much importance to improve the skills of writing good business letters. Judging from examples of the application of cooperative principle in successful communication, we had better to emphasize the role of applying the principle which will contribute to the improvement of business letters writing.People have found that cooperative principle has been widely applied in writing business letters in these years. Grices cooperative principle (CP) is one of the core ideas in Pragmatics which is significant in guiding verbal communication in the living world, and verbal communication includes oral c