| 摘要 | 第1-7页 |
| Abstract | 第7-12页 |
| Abbreviations | 第12-13页 |
| List of Tables | 第13-14页 |
| List of Figures | 第14-15页 |
| Chapter 1 Introduction | 第15-20页 |
| ·Research Background | 第15-17页 |
| ·Research Purpose and Research Questions | 第17-18页 |
| ·Research Significance | 第18页 |
| ·Outline of the Thesis | 第18-20页 |
| Chapter 2 Literature Review | 第20-35页 |
| ·Previous Genre Studies on Introduction Chapters | 第20-23页 |
| ·Previous Genre Studies on Academic Texts Conclusions | 第23-24页 |
| ·Previous Studies on Ideational Function and Transitivity System | 第24-26页 |
| ·Previous Studies on Interpersonal Function | 第26-32页 |
| ·Previous Studies on Hedges | 第26-30页 |
| ·Previous Studies on Tense Usage in Academic Discourse | 第30-32页 |
| ·Previous Studies on Textual Function | 第32-35页 |
| Chapter 3 Research Design | 第35-42页 |
| ·Theoretical Frameworks | 第35-39页 |
| ·Genre Analysis Theory | 第35-37页 |
| ·Metafunction Theory | 第37-39页 |
| ·Data Collection | 第39-40页 |
| ·Research Method | 第40-42页 |
| Chapter 4 Generic Structures of PhD Dissertation Introductions and Conclusions | 第42-53页 |
| ·Criteria for Identifying Moves and Steps | 第42-43页 |
| ·Identifying Moves and Steps through Their Functions | 第42页 |
| ·Identification of Moves and Steps through Linguistic Signals | 第42-43页 |
| ·Issues in the Identification of Moves and Steps | 第43页 |
| ·Generic Structures of PhD Dissertation Introductions and Conclusions in Both Corpora | 第43-50页 |
| ·Generic Structures of Introductions in Both Corpora | 第43-47页 |
| ·Generic Structures of Conclusions in Both Corpora | 第47-50页 |
| ·Interactive Moves between Introductions and Conclusions | 第50-53页 |
| Chapter 5 Comparative Analysis of Linguistic Mechanisms in Achieving the Interactions | 第53-78页 |
| ·Comparative Analysis of Transitivity System in Achieving the Interactions | 第53-58页 |
| ·Distributions of Processes in the Interactive Moves between Introductions and Conclusions in Both Corpora | 第53-55页 |
| ·Comparative Analysis of Processes in Achieving the Interactions between Introductions and Conclusions | 第55-58页 |
| ·Comparative Analysis of Hedges in Achieving the Interactions | 第58-69页 |
| ·Hedges Distributions in the Interactive Moves between Introductions and Conclusions in Both Corpora | 第59-63页 |
| ·Comparative Analysis of Hedges in Achieving the Interactions between Introductions and Conclusions | 第63-69页 |
| ·Comparative Analysis of Tense Shift in Achieving the Interactions | 第69-78页 |
| ·Tense Distributions in the Interactive Moves between Introductions and Conclusions in Both Corpora | 第70-71页 |
| ·Comparative Analysis of Tense Shift in Achieving the Interactions between Introductions and Conclusions | 第71-78页 |
| Chapter 6 Conclusion | 第78-85页 |
| ·Major Findings | 第78-83页 |
| ·Research Significances and Implications | 第83-84页 |
| ·Research Limitations | 第84页 |
| ·Suggestions for Further Study | 第84-85页 |
| References | 第85-92页 |
| Appendix Ⅰ | 第92-94页 |
| Appendix Ⅱ | 第94-95页 |
| Appendix Ⅲ | 第95-96页 |
| Appendix Ⅳ | 第96-97页 |
| Appendix Ⅴ | 第97-98页 |
| Acknowledgement | 第98-99页 |
| 作者简介 | 第99-100页 |
