Chapter One The Layout and Structure of A Business Letter/贸易函电格式与结构 1.1 The Layout of A Business Letter/贸易函电格式 1.2 The Structure of A Business Letter,贸易函电结构 1.3 Principles of A Business Letter/贸易函电的写作原则 1.4 The Tendency of Business Letter-Writing/书写外贸