| 摘要 | 第1-6页 |
| Abstract | 第6-12页 |
| Chapter One Introduction | 第12-20页 |
| ·Significance of the Present Research | 第12-17页 |
| ·Methodology | 第17-18页 |
| ·An Overview of the Thesis | 第18-20页 |
| Chapter Two Literature Review | 第20-39页 |
| ·Vagueness in Language Use | 第20-31页 |
| ·Definitions | 第20-21页 |
| ·Distinction of Vagueness of Other Related Notions | 第21-26页 |
| ·Review of Previous Research on Vague Language at Home and Abroad | 第26-31页 |
| ·Pragmatic Research on Vagueness | 第31-33页 |
| ·Definition | 第31-32页 |
| ·Differences of Pragmatic and Semantic Vagueness | 第32-33页 |
| ·Overview of Related Studies in English Business Correspondence | 第33-37页 |
| ·Definition | 第34页 |
| ·Classification of Business Correspondence | 第34-35页 |
| ·Principles of Business Correspondence Writing | 第35-37页 |
| ·Overview of Pragmatic Vagueness in English Business Correspondence | 第37-39页 |
| Chapter Three Theoretical Framework and Research Methodology | 第39-51页 |
| ·Adaptation Theory | 第39-45页 |
| ·Overview | 第39-40页 |
| ·Notions of Adaptation | 第40-42页 |
| ·Dimensions of Adaptation | 第42-45页 |
| ·Politeness Principle | 第45-49页 |
| ·Leech's Politeness Principle | 第45-46页 |
| ·Brown and Levinson's Politeness Principle | 第46-49页 |
| ·Research Methodology | 第49-50页 |
| ·Quantitative Analysis of Vague Language | 第49-50页 |
| ·Qualitative Analysis of Vague Language | 第50页 |
| ·Data Collection | 第50-51页 |
| Chapter Four Vagueness in English Business Correspondence:A QuantitativeStudy | 第51-76页 |
| ·Vagueness in Correspondence for Establishing Business Relations and Sales | 第51-57页 |
| ·Vagueness in Correspondence for Enquiries and Offer | 第57-62页 |
| ·Vagueness in Correspondence for Counter Offer and Counter-Counter Offer | 第62-66页 |
| ·Vagueness in Correspondence for Order and Payment | 第66-69页 |
| ·Vagueness in Correspondence for Insurance and Shipment | 第69-71页 |
| ·Vagueness in Correspondence for Complaint and Settlement | 第71-74页 |
| ·Summary | 第74-76页 |
| Chapter Five Pragmatic Vagueness in English Business Correspondence:AQualitative Research | 第76-89页 |
| ·Adaptation Theory Employed in English Business Correspondence | 第76-83页 |
| ·Vagueness as Adaptation to Mental World | 第76-81页 |
| ·Vagueness as Adaptation to Social World | 第81-82页 |
| ·Vagueness as Adaptation to Physical World | 第82-83页 |
| ·Relations between Politeness Principle and Adaptation Theory | 第83-85页 |
| ·Politeness Principle Applied in English Business Correspondence | 第85-88页 |
| ·Tact Maxim | 第85-86页 |
| ·Generosity | 第86页 |
| ·Approbation | 第86-87页 |
| ·Modesty | 第87页 |
| ·Agreement | 第87页 |
| ·Sympathy | 第87-88页 |
| ·Summary | 第88-89页 |
| Chapter Six Conclusion | 第89-92页 |
| ·Major Findings | 第89-90页 |
| ·Limitations | 第90-91页 |
| ·Suggestions for Further Research | 第91-92页 |
| Bibliography | 第92-95页 |
| Appendix | 第95-113页 |
| Acknowledgements | 第113-114页 |
| 在读期间科研成果目录 | 第114页 |
