| 摘要 | 第5-6页 |
| Abstract | 第6-7页 |
| Abbreviations | 第12-13页 |
| Chapter 1 Introduction | 第13-17页 |
| 1.1 Research Background | 第13-14页 |
| 1.2 Objectives of the Research | 第14页 |
| 1.3 Significance of the Research | 第14-16页 |
| 1.4 Organization of the Thesis | 第16-17页 |
| Chapter 2 Literature Review | 第17-34页 |
| 2.1 Definition and Classification of DMs | 第17-21页 |
| 2.1.1 Definition of DMs | 第17-18页 |
| 2.1.2 Blakemore’s Classification | 第18-19页 |
| 2.1.3 Chen Xinren’s Classification | 第19页 |
| 2.1.4 Fraser’s Classification | 第19-21页 |
| 2.2 Perspectives of DMs | 第21-24页 |
| 2.2.1 Semantic-Pragmatic Perspective to DMs | 第21-22页 |
| 2.2.2 Syntactic-Pragmatic Perspective to DMs | 第22-23页 |
| 2.2.3 Cognitive-Pragmatic Perspective to DMs | 第23-24页 |
| 2.3 Previous Studies on DMs | 第24-29页 |
| 2.3.1 Related Studies on DMs Abroad | 第25-27页 |
| 2.3.2 Related Studies on DMs at Home | 第27-29页 |
| 2.4 Corpus and Corpora Linguistics | 第29-31页 |
| 2.5 Theoretical Framework | 第31-34页 |
| 2.5.1 Relevance Theory as the Basis of Cognitive Pragmatics | 第31-32页 |
| 2.5.2 Relevance Theory and DMs Research | 第32-34页 |
| Chapter 3 Methodology | 第34-41页 |
| 3.1 Research Questions | 第34页 |
| 3.2 Corpora for the Research | 第34-36页 |
| 3.3 Research Tools Used in This Research | 第36-37页 |
| 3.4 Data Processing | 第37-41页 |
| 3.4.1 DMs Classification Used in This Study | 第37-39页 |
| 3.4.2 Data Retrieval | 第39-41页 |
| Chapter 4 Results and Analysis | 第41-61页 |
| 4.1 Overall Frequency of DMs across CBNC and ABNC | 第41-43页 |
| 4.2 The Frequency of DMs in Each Type across CBNC and ABNC | 第43-48页 |
| 4.2.1 The Frequency of DMs Strengthening Existing Assumptions | 第43-45页 |
| 4.2.2 The Frequency of DMs Contrasting Existing Assumptions | 第45-47页 |
| 4.2.3 The Frequency of DMs Introducing Contextual Implication | 第47-48页 |
| 4.3 Reasons for Frequency Features of DMs | 第48-51页 |
| 4.3.1 Reason for the Insignificant Overall Frequency Difference | 第49-50页 |
| 4.3.2 Reason for the High Frequency of DMs1 and DMs2 | 第50页 |
| 4.3.3 Reason for the Significant Differences of Most Individual DMs | 第50-51页 |
| 4.4 Cognitive-pragmatic Analysis of DMs | 第51-61页 |
| 4.4.1 Cognitive-pragmatic Analysis of in addition | 第52-55页 |
| 4.4.2 Cognitive-pragmatic Analysis of however | 第55-58页 |
| 4.4.3 Cognitive-pragmatic Analysis of therefore | 第58-61页 |
| Conclusion | 第61-65页 |
| Major Findings | 第61-62页 |
| Limitations of This Study | 第62-63页 |
| Implications and Suggestions for Future Study | 第63-65页 |
| References | 第65-69页 |
| Appendix A 攻读学位期间发表的论文 | 第69-70页 |
| Appendix B General Table of Counts of DMS | 第70-73页 |
| Appendix C 详细中文摘要 | 第73-76页 |
| Acknowledgements | 第76页 |
