| Acknowledgments | 第1-5页 |
| Abstract | 第5-7页 |
| 摘要 | 第7-13页 |
| Chapter One Introduction | 第13-17页 |
| ·Background of the Study | 第13-14页 |
| ·Significance of the Study | 第14-15页 |
| ·Objective of the Study | 第15-16页 |
| ·Organization of the Thesis | 第16-17页 |
| Chapter Two Literature Review | 第17-26页 |
| ·The Previous Study of Hedges Abroad | 第17-20页 |
| ·Prince et al.'s Model | 第17-19页 |
| ·Hyland's Model | 第19-20页 |
| ·The Previous Study of Hedges At Home | 第20-21页 |
| ·Wu Tieping's Model | 第20页 |
| ·He Ziran's Model | 第20-21页 |
| ·Working Definition of Political Discourse | 第21-22页 |
| ·Adaptation Theory | 第22-25页 |
| ·Summary | 第25-26页 |
| Chapter Three Methodology | 第26-32页 |
| ·Research Questions | 第26页 |
| ·Data Collection | 第26-27页 |
| ·Research Procedure | 第27-32页 |
| Chapter Four Results and Discussion | 第32-50页 |
| ·Similarities and Differences between CPD and APD | 第32-36页 |
| ·Similarities of Hedges Applied in Chinese and American Political Discourse | 第32-35页 |
| ·Differences of Hedges Applied in Chinese and American Political Discourse | 第35-36页 |
| ·Hedges and Verschueren's Linguistic Adaptation Theory | 第36-48页 |
| ·Hedges as Adaptation to the Physical World | 第36-40页 |
| ·Adaptation to Time | 第36-38页 |
| ·Adaptation to Space | 第38-39页 |
| ·Adaptation to Other Physical Conditions | 第39-40页 |
| ·Hedges as Adaptation to the Social World | 第40-44页 |
| ·Adaptation to Political Stand | 第40-42页 |
| ·Adaptation to Occupation and Power | 第42-43页 |
| ·Adaptation to Culture | 第43-44页 |
| ·Hedges as Adaptation to the Mental World | 第44-48页 |
| ·Adaptation to Utterers' Mental World | 第45-47页 |
| ·Adaptation to Interpreters' Mental world | 第47-48页 |
| ·Summary | 第48-50页 |
| Chapter Five Conclusion | 第50-55页 |
| ·Major Findings | 第50-52页 |
| ·Implications of the Study | 第52-53页 |
| ·Limitations of the Study and Suggestions for Future Research | 第53-55页 |
| Works Cited | 第55-58页 |
| Appendices | 第58-66页 |
| Appendix A | 第58-60页 |
| Appendix B | 第60-66页 |
| Publications | 第66页 |
