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eanings.All these maxims are widely used in the conversations, however, Grice did notassume that all these maxims are implied the all the conversations. Some speakers orsome writers do not use these kinds of maxims to show some kind of respect or to showtheir interesting by violating or not obeying the maxims.

Chapter II Introduction of English Business Letters

In modern times, the English business letters are the effective and convenient way toestablish the good relationship among the companies and the colleagues. Every daymillions of millions of English business letters are written to let the trades move on.English business letters are not only sent within the firms but also outside the firms. Thekinds of letters are regarded to be the great bridge of the communication between thebusiness cooperative partners. The politeness and cooperative strategies within theEnglish business letters should be use properly and the business letters should be wellorganized and well written.

1. What are English Business Letters
Many people who learn English as the second language are always worry that theycould not write the English business letters, because they think that their writing skillsare not advanced enough to write that kind of letters. In order to make the letter moreeffective in business use, short sentences and obviously vocabulary should be used. Thetarget is that the easier the business letters are to read, the more effective it is.In the process of writing the English business letters, the context should be carefullyconsidered and the content should be fully understood by the readers. English businessletters are being widely used to organize job interviews, writing resumes, apply forassistance and make complains and so on. And the English business letters is a type ofspecial method of communication and it has standard phrases or sentences. Differenttypes of English business letters use different sorts of phrased or sentences. The contentsof the English business letters are extremely significant which shows the writers’ aim. Itis necessary to make the target and content clear to read.

Chapter II Introduction of English Business Letters.......... 35-52
    1. What are English Business Letters..........35-38
    2. Types of English Business Letters ..........38-40
    3. Traits of English Business Letters.......... 40-52
Chapter Ⅲ Usage of Cooperative Principle and Politeness Principle.......... 52-63
    1. The Usage of Cooperative Principle.......... 52-57
    2. The Usage of Politeness Principle ..........57-63

Conclusion
The Cooperative Principle and Politeness Principle are studied by discussingresearches on the notation, the types, the features and usage in the English businessletters. The Cooperative Principle (CP) which is proposed by Grice and the PolitenessPrinciple (PP) which is mentioned by Leech are employed in English business letters toachieve the writer’s aim of cooperation in business trade. According to the twowell-known principles, other strategies are created later on. The English business letterscan be divided into many classes according to their specific aims. However, no matterwhat kind of English letters they are, the writers should convey the information invigorous attitu本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。