| 摘要 | 第1-9页 |
| ABSTRACT | 第9-12页 |
| Chapter 1 Introduction | 第12-15页 |
| ·Objectives of the Thesis | 第12-13页 |
| ·Outline of the Thesis | 第13-15页 |
| Chapter 2 Literature Review | 第15-22页 |
| ·A General Introduction to Economy of Language | 第15-19页 |
| ·A New Economy Principle | 第19页 |
| ·An Overview of English Business Letters | 第19-22页 |
| ·The Definition and Nature of Business Letters | 第19-20页 |
| ·Classifications of Business Letters | 第20-22页 |
| Chapter 3 Theoretical Framework | 第22-32页 |
| ·The Principle of Economy to English Business Letters | 第22-23页 |
| ·A New Economy Principle and Its Strategies | 第23-27页 |
| ·The Law of Constant Power in Pragmatic Behavior | 第23-24页 |
| ·The Law of Maximization of Utility of Speech | 第24-25页 |
| ·The law of Diminishing Marginal Utility of Speech | 第25页 |
| ·Principle of General Equilibrium | 第25页 |
| ·Principle of Common Presupposition | 第25-26页 |
| ·Principle of Closeness Preference | 第26页 |
| ·Principle of Satisfaction Adequacy of Speech | 第26页 |
| ·Principle of Conformity to the Public | 第26-27页 |
| ·Principle of Secondary Position of Aesthetic Motivation | 第27页 |
| ·The Relationship of the Six Principles | 第27-28页 |
| ·Basic Principles for Business Letter Writing | 第28-32页 |
| ·Completeness | 第29页 |
| ·Concreteness | 第29-30页 |
| ·Clearness | 第30页 |
| ·Conciseness | 第30页 |
| ·Courtesy | 第30页 |
| ·Consideration | 第30-31页 |
| ·Correctness | 第31-32页 |
| Chapter 4 Research Methodology and Result Analysis | 第32-63页 |
| ·Data Collection | 第32页 |
| ·Data Analysis | 第32-34页 |
| ·Analyses of the Linguistic Features | 第34-62页 |
| ·The Use of Simplified Forms and Abbreviations | 第35-36页 |
| ·The Use of Polite and Active Expressions or Euphemism Expression | 第36-40页 |
| ·Expression of “Thanks” | 第39页 |
| ·The Use of Declarative Sentences | 第39-40页 |
| ·The Use of Subjunctive Mood | 第40页 |
| ·The Use of Common Words with Meaning Changes | 第40-42页 |
| ·Preference of Concrete Words to Abstract Words | 第42-44页 |
| ·Choice of Precise Wording | 第44-47页 |
| ·Avoidance of Ambiguity | 第44-46页 |
| ·Avoidance of Cliché | 第46-47页 |
| ·Choice of Concise Wording | 第47-55页 |
| ·Avoidance of Long and Unusual Words | 第48-50页 |
| ·Avoidance of Wordiness | 第50-53页 |
| ·Avoidance of Redundancies | 第53-55页 |
| ·The Use of Simple or Common words | 第55-58页 |
| ·Avoidance of Officialese | 第55-56页 |
| ·Avoidance of Commercialese | 第56-57页 |
| ·Avoidance of Needless Jargons and Slang | 第57-58页 |
| ·The Use of Positive Tone | 第58-60页 |
| ·Expression of “You-attitude” | 第60-61页 |
| ·The Use of Active Voice | 第61-62页 |
| ·Summary | 第62-63页 |
| Chapter 5 Effective Business Letters | 第63-82页 |
| ·Letters of Establishing Trade Relationship | 第64-66页 |
| ·Letters of Inquiry | 第66-67页 |
| ·Letters of Quotation | 第67-69页 |
| ·Letters of References | 第69-72页 |
| ·Letters of Payment and Collection | 第72-75页 |
| ·Letters of Shipment | 第75-76页 |
| ·Letters of Complaint | 第76-78页 |
| ·Letters of Claim Adjustment | 第78-81页 |
| ·Summary | 第81-82页 |
| Conclusion | 第82-84页 |
| References | 第84-88页 |
| Acknowledgements | 第88-89页 |
| APPENDIX A 攻读硕士学位期间发表的学术论文 | 第89-90页 |
| APPENDIX B Sample Letters | 第90-96页 |
| APPENDIX C 详细中文摘要 | 第96-98页 |
