| Acknowledgements | 第5-7页 |
| 英文摘要 | 第7页 |
| Chapter One Introduction | 第8-11页 |
| Chapter Two The Relationships Between Diatypic Variety & Three Determinants | 第11-29页 |
| Ⅰ．Diatypic Variety & Field | 第12-21页 |
| 1． Diatypic Variety Shifting with Field | 第12-13页 |
| 2． Topic Change | 第13-14页 |
| 3． Two Orders of Parallel, Social Action and Subject Matter | 第14-15页 |
| 4． Topical Coherence | 第15-17页 |
| 5． Topic Conflict & Incoherence | 第17-19页 |
| 6． Restricted Fields Resulting in Closed Type of Diatypic Variety | 第19-20页 |
| 7． Displacement of Diatypic Variety from Field | 第20-21页 |
| 8． New Fields and New Diatypic Varieties | 第21页 |
| Ⅱ． Diatypic Variety & Tenor | 第21-25页 |
| 9． Diatypic Variety and the 25 Correlations | 第22-23页 |
| 10． Two Orders of Roles | 第23-24页 |
| 11． Turn-taking and Diatypic Variety | 第24-25页 |
| Ⅲ． Diatypic Variety & Mode | 第25-29页 |
| 12． Influence of Mode on Other Categories of Diatypic Variety | 第25-27页 |
| 13． Special Mode and Special Diatypic Variety | 第27-28页 |
| 14． Mixed Modes and Diatypic Variety | 第28-29页 |
| Chapter Three The Characteristics of Diatypic Variety | 第29-48页 |
| Ⅰ． Features of Diatypic Variety Proper | 第30-41页 |
| 1． Co-occurrence Restrictions | 第30-31页 |
| 2． Violation of Diatypic Variety | 第31-35页 |
| 3． Variation of Diatypic Variety | 第35-38页 |
| 4． Simplified Diatypic Variety | 第38-40页 |
| 5． Tautology of Diatypic Variety | 第40-41页 |
| Ⅱ． Features Between Diatypic Variety & Context | 第41-48页 |
| 6． Diatypic Variety in Multicontexts | 第41-43页 |
| 7． World-switching | 第43-44页 |
| 8． Merger of Diatypic Varieties | 第44-46页 |
| 9． Decontexualized Diatypic Varieties | 第46-47页 |
| 10． Inconsistency of Diatypic Variety and Situation | 第47-48页 |
| Chapter Four The Functions of Diatypic Variety | 第48-63页 |
| Ⅰ． Predictive Function | 第48-52页 |
| Ⅱ． Function Reflecting Culture | 第52-53页 |
| Ⅲ． Application of Diatypic Variety | 第53-63页 |
| 1． Application in Language Teaching | 第54-58页 |
| 2． Application in Translation | 第58-61页 |
| 3． Application in Communication | 第61-63页 |
| Chapter Five Conclusion | 第63-66页 |
| Bibliography | 第66-67页 |
