| 摘要 | 第1-8页 |
| Abstract | 第8-12页 |
| Chapter 1 Introduction | 第12-19页 |
| ·Research Background | 第12-14页 |
| ·Purpose and Significance of the Study | 第14-15页 |
| ·Research Design | 第15-19页 |
| ·Data Collection | 第15-17页 |
| ·Data Processing | 第17-19页 |
| Chapter 2 Literature Review | 第19-36页 |
| ·Previous Studies on DMs | 第19-28页 |
| ·Definition of DMs | 第19-20页 |
| ·Characteristics of DMs | 第20-21页 |
| ·Two Approaches to DMs | 第21-24页 |
| ·The Coherence-based Approach | 第21-23页 |
| ·The Relevance-oriented Approach | 第23-24页 |
| ·Some Foreign and Domestic Pragmatic Studies on DMs | 第24-25页 |
| ·Pragmatic Classification of DMs | 第25-28页 |
| ·Previous Studies on Mitigators | 第28-33页 |
| ·Studies on Mitigation | 第29-31页 |
| ·Mitigation and Politeness | 第31-32页 |
| ·The Studies of DMs as Mitigators | 第32-33页 |
| ·Mitigating Mechanism of Mitigators | 第33-36页 |
| Chapter 3 Descriptive Analysis of the Data | 第36-53页 |
| ·Mitigators in Selected Episodes of Friends | 第36-42页 |
| ·Mitigators in Selected Episodes of I Love My Family | 第42-47页 |
| ·Frequency and Distribution of Mitigators | 第47-53页 |
| ·Similarities of Mitigators in Macro- and micro-view | 第50-51页 |
| ·Differences of Mitigators in Macro- and micro-view | 第51-53页 |
| ·Differences in Totality | 第51-52页 |
| ·Differences in Top-five Mitigators | 第52-53页 |
| Chapter 4 Comparison of Functional Features of Mitigators in English and Chinese | 第53-64页 |
| ·Similarities in Functional Use of Mitigators | 第55-58页 |
| ·Similar '-I-' Mitigators as 'Bushes' | 第55-56页 |
| ·Similar '-You-' Mitigators as 'Hedges' | 第56-58页 |
| ·Differences in Functional use of Mitigators as 'Shields' | 第58-60页 |
| ·Preference in Choice of Mitigation Devices | 第60-64页 |
| Chapter 5 Conclusion | 第64-67页 |
| ·Major Findings | 第64-65页 |
| ·Implications and Limitations | 第65-67页 |
| Acknowledgements | 第67-68页 |
| Bibliography | 第68-72页 |
| Appendix | 第72-74页 |
| Article Published during MA Study | 第74页 |
| 攻读硕士期间发表的论文 | 第74页 |
