Part One 写作概述 Chapter 1 商务英语信函的分类、结构和写作原则 1 Basic Categories of Business English Writing商务英语写作基本分类 2 Structure of Business Writing商务信函的结构 3 Principles for Business English Writing商务信函写作原则 Chapter 2 商务信函的组成与格式 1 Parts of a Business Letter信函的组成 2 0pen Punct