| 中文摘要 | 第3-4页 |
| ABSTRACT | 第4页 |
| Chapter Ⅰ Introduction | 第6-9页 |
| 1.1 Background of the Study | 第6页 |
| 1.2 Significance of the Study | 第6-7页 |
| 1.3 Organization of the Study | 第7-9页 |
| ChapterⅡLiterature Review | 第9-21页 |
| 2.1 Issues on Discourse Markers | 第9-17页 |
| 2.1.1 Definitions of Discourse Markers | 第9-11页 |
| 2.1.2 Various Perspectives on Discourse Markers | 第11-17页 |
| 2.2 Issues on Debate | 第17-21页 |
| 2.2.1 The Definition and Classification of Debate | 第18-19页 |
| 2.2.2 The History of Presidential Debate | 第19-21页 |
| ChapterⅢ Theoretical Framework | 第21-29页 |
| 3.1 Relevance Theory | 第21-23页 |
| 3.2 Politeness Theory | 第23-26页 |
| 3.3 Adaptation Theory | 第26-29页 |
| Chapter Ⅳ Analysis of Discourse Markers in Presidential Debate | 第29-51页 |
| 4.1 Data Preparation | 第29页 |
| 4.2 Quantitative Results for the Importance of Discourse Markers in Presidential Debate | 第29-30页 |
| 4.3 Different Functions of Discourse Markers in Presidential Debate | 第30-39页 |
| 4.3.1 Elaborative Discourse Markers | 第31-32页 |
| 4.3.2 Contrastive Discourse Markers | 第32-34页 |
| 4.3.3 Sequential Discourse Markers | 第34-35页 |
| 4.3.4 Cause and Effect Discourse Markers | 第35页 |
| 4.3.5 Attitudinal Discourse Markers | 第35-36页 |
| 4.3.6 Tactic Discourse Markers | 第36-37页 |
| 4.3.7 Emphasis Discourse Markers | 第37-39页 |
| 4.4 Choice of Discourse Markers in Presidential Debate | 第39-51页 |
| 4.4.1 Discourse Markers Based on Relevance Theory | 第42-46页 |
| 4.4.2 Discourse Markers Based on Politeness Theory | 第46-48页 |
| 4.4.3 Discourse Markers Based on Adaptation Theory | 第48-51页 |
| ChapterⅤ Conclusion | 第51-54页 |
| 5.1 Summary of the Study | 第51-52页 |
| 5.2 Limitations of the Study | 第52页 |
| 5.3 Suggestions for Further Research | 第52-54页 |
| Bibliography | 第54-57页 |
| Appendix: The Collection of Presidential Material | 第57-58页 |
| Acknowledgements | 第58页 |
