| Abstract in English | 第4-6页 |
| Abstract in Chinese | 第7-12页 |
| 1. Introduction | 第12-18页 |
| 1.1 Research background | 第13-15页 |
| 1.2 Significance of the research | 第15-16页 |
| 1.3 Organization of the thesis | 第16-18页 |
| 2. Literature Review and Theoretical Framework | 第18-30页 |
| 2.1 Definition of evidentiality | 第18-19页 |
| 2.2 Classifications of evidentials | 第19-24页 |
| 2.2.1 Classifications in a narrow sense | 第19-21页 |
| 2.2.2 Classifications in a broad sense | 第21-24页 |
| 2.3 Classification adopted in the study | 第24-25页 |
| 2.4 Related studies in academic discourses | 第25-27页 |
| 2.5 Genre | 第27-30页 |
| 3. Research Design | 第30-38页 |
| 3.1 Research questions | 第30页 |
| 3.2 Data collection | 第30-31页 |
| 3.3 Research procedure | 第31-38页 |
| 3.3.1 A sample study | 第31-33页 |
| 3.3.2 Annotation of the data | 第33页 |
| 3.3.3 Data retrieval and analysis | 第33-34页 |
| 3.3.4 Lexical realizations of evidentiality in the two corpora | 第34-38页 |
| 4. Contrastive Analysis of Evidentials and Lexical Realizations of Evidentials in Both Corpora | 第38-64页 |
| 4.1 Overall distribution of four types of evidentials | 第38-41页 |
| 4.2 Distributions of sensory evidentials in the two corpora | 第41-43页 |
| 4.3 Distributions of reporting evidentials in the two corpora | 第43-56页 |
| 4.3.1 Self-reporting and other-reporting evidentials | 第45-47页 |
| 4.3.2 Information sources of reporting evidentials | 第47-51页 |
| 4.3.3 The distribution of reporting verbs in the two corpora | 第51-53页 |
| 4.3.4 Nonverbal realizations | 第53-56页 |
| 4.4 Distributions of inferring evidentials in the two corpora | 第56-61页 |
| 4.5 Distributions of belief evidentials in the two corpora | 第61-64页 |
| 5. Conclusion | 第64-68页 |
| 5.1 Major findings of the study | 第64-66页 |
| 5.2 Implications of the study | 第66页 |
| 5.3 Limitations of the study and suggestions for further studies | 第66-68页 |
| Bibliography | 第68-72页 |
| Appendix A List of Data-codings | 第72-74页 |
| Appendix B Data Sources | 第74-82页 |
| Appendix C Sample Tagging | 第82-88页 |
| Acknowledgements | 第88-90页 |
| Publications | 第90页 |
