摘  要

商务英语信函的语言通常需要精准、严谨，避免模糊。然而，通过对商务英语信函的分析发现，模糊语在商务信函中的应用很大程度上提高了语言表达的灵活性，使得信函更加礼貌、得体。因此，对于商务英语信函这一商务交流的重要环节中模糊语言的语用研究就具有一定的现实意义。在英语商务信函模糊语的研究上，有的学者从模糊语的语用功能和实现形式进行分析，有的则从传统的角度研究模糊语在英语商务信函中的运用。本文以合作原则为理论基础，运用定性分析法对模糊语在商务信函中的运用进行分析，发现模糊语在商务英语信函中有积极作用,适当地使用模糊语，可提高语言的表达效率，有利于商务活动的进展。

关键词：模糊语；商务英语信函；定性分析；合作原则

Abstract

The language of business English letters always needs to be accurate, rigorous and ambiguity should be avoided in writing. However, through the analysis of business English letters, we found that vague language was widely used in all kinds of business English letters. Using the vague language will make the language more flexible and polite. Therefore, a pragmatic study of the English business letters plays an important role in business communication and vague language has a certain practical significance. For the study of vague language in English business, some scholars analyze it from the perspectives of pragmatic functions and realization forms of vague language, others analyze from the traditional perspective or from the actual application of vague language in the letter. In this paper, the author applied the qualitative analysis method based on Cooperative Principle and drew the conclusion that appropriate use of vague language can improve the efficiency of language expression, and also be conducive to the progress of the business activities.

Keywords: Vague language; Cooperative Principle; business English letters; qualitative analysis