ContentsChinese Abstract.....................................................................................2English Abstract......................................................................................31. Introduction.........................................................................................41.1 Research Background..........................................................................................41.2 Research Significance.........................................................................................41.3 Paper Structure....................................................................................................42. Literature Review...............................................................................52.1 Research on Business English Correspondence at Abroad.................................52.2 Research on Business English Correspondence at Home...................................53. The Overview of Business English Letters.......................................63.1 Definition of Business English Correspondence.................................................63.2 Classification of Business English Correspondence...........................................73.3 Basic Writing Principle --“7C Principles”..........................................................74. Analysis and Discussion......................................................................84.1 Lexical Features of Business English Correspondence.......................................84.2 Syntactic Features of Business English Correspondence..................................124.3 Textual Features of Business English Correspondence.....................................155. Conclusion.........................................................................................18References..............................................................................................20商务英...