| Acknowledgements | 第1-5页 |
| Abstract | 第5-7页 |
| 摘要 | 第7-14页 |
| Chapter 1 Introduction | 第14-17页 |
| ·Research Orientation | 第14页 |
| ·Research Rationale | 第14-15页 |
| ·Significance of the Study | 第15页 |
| ·Research Questions | 第15-16页 |
| ·Organization of the Thesis | 第16-17页 |
| Chapter 2 Literature Review | 第17-30页 |
| ·Studies on Speech | 第17-19页 |
| ·Studies on Interpersonal Meanings | 第19-21页 |
| ·Studies on Modality | 第21-30页 |
| ·Previous studies on modality | 第21-23页 |
| ·Hallidayan modality system | 第23-30页 |
| Chapter 3 Methodology | 第30-34页 |
| ·Data Collection | 第30-31页 |
| ·Speech Selection | 第31-32页 |
| ·Data Analysis | 第32-34页 |
| Chapter 4 Interpersonal Meanings Revealed by Modality | 第34-66页 |
| ·Interpersonal Meanings Revealed by Finite Modal Operators | 第34-54页 |
| ·Interpersonal meanings revealed by median value finite modal operators | 第35-43页 |
| ·Interpersonal meanings revealed by low value finite modal operators | 第43-49页 |
| ·Interpersonal meanings revealed by high value finite modal operators | 第49-54页 |
| ·Interpersonal Meanings Revealed by Adjuncts of Modality | 第54-60页 |
| ·Adjuncts of probability | 第56-57页 |
| ·Adjuncts of usuality | 第57-60页 |
| ·Interpersonal Meanings Revealed by Metaphors of Modality | 第60-66页 |
| ·Explicitly subj ective metaphors | 第61-64页 |
| ·Explicitly objective metaphors | 第64-66页 |
| Chapter 5 Results and Discussions | 第66-77页 |
| ·Descriptions on the Quantitative Results | 第66-73页 |
| ·Political speech | 第66-68页 |
| ·Economic speech | 第68-70页 |
| ·Educational speech | 第70-71页 |
| ·Social speech | 第71-73页 |
| ·Factors Influencing the Speaker's Choice of Modality | 第73-77页 |
| ·The speech type | 第73-74页 |
| ·The specific culture | 第74-75页 |
| ·The specific meanings the speaker wants to express | 第75-77页 |
| Chapter 6 Conclusion | 第77-80页 |
| ·Conclusions | 第77-78页 |
| ·Implications | 第78页 |
| ·Limitations and Suggestions | 第78-80页 |
| References | 第80-83页 |
| Paper Published | 第83页 |
