| 摘要 | 第5-6页 |
| Abstract | 第6-7页 |
| Abbreviations | 第11-14页 |
| Chapter 1 Introduction | 第14-18页 |
| 1.1 Research background of this dissertation | 第14-15页 |
| 1.2 Objectives of this dissertation | 第15-16页 |
| 1.3 Innovations of this dissertation | 第16页 |
| 1.4 Outline of this dissertation | 第16-18页 |
| Chapter 2 Literature Review | 第18-30页 |
| 2.1 Studies on modality | 第18-22页 |
| 2.1.1 Studies on modality abroad | 第18-20页 |
| 2.1.2 Studies on modality in China | 第20-21页 |
| 2.1.3 Studies on modality and time, aspect and voice | 第21-22页 |
| 2.2 Studies on Formal Concept Analysis | 第22-24页 |
| 2.3 Studies on word sense disambiguation | 第24-28页 |
| 2.3.1 Studies on word sense disambiguation abroad | 第25-26页 |
| 2.3.2 Studies on word sense disambiguation in China | 第26-28页 |
| 2.4 Space for this study | 第28-30页 |
| Chapter 3 Methodology and Data Collection | 第30-40页 |
| 3.1 Research procedures | 第30-31页 |
| 3.2 Data collection | 第31-34页 |
| 3.3 Research methods | 第34-37页 |
| 3.3.1 Formal Concept Analysis method | 第34-35页 |
| 3.3.2 Corpus-based approach | 第35-36页 |
| 3.3.3 Leave-one-out cross validation method | 第36-37页 |
| 3.4 Tools used in this study | 第37-40页 |
| 3.4.1 Attribute partial-ordered structure diagram generating tool | 第37-38页 |
| 3.4.2 Concordance for windows version 2.0 | 第38-40页 |
| Chapter 4 Word Sense Classification of English Modal Verb Must | 第40-44页 |
| 4.1 The reason of choosing must | 第40-41页 |
| 4.2 Sense classification of must | 第41-43页 |
| 4.3 Study scopes of must | 第43-44页 |
| Chapter 5 Construction of WSD Model of Must Based on FCA | 第44-66页 |
| 5.1 Establishment of training and testing sets | 第44页 |
| 5.2 Calculation of mutual information | 第44-45页 |
| 5.3 Drawing scatter diagrams | 第45-49页 |
| 5.4 Addition of syntactic features | 第49-50页 |
| 5.5 Construction of formal context | 第50-55页 |
| 5.6 Generation of structural partial-ordered attribute diagram of must | 第55-56页 |
| 5.7 Rule extraction | 第56-64页 |
| 5.8 Summary | 第64-66页 |
| Chapter 6 Relationship between Modal Sense of Must and Time, Aspect and Voice .. 53Chapter 7 Knowledge Discovery of Must | 第66-74页 |
| Chapter 7 Knowledge Discovery of Must | 第74-90页 |
| 7.1 Analysis of structural partial-ordered attribute diagram | 第74-82页 |
| 7.1.1 Unique attributes and unique composite attributes | 第75-78页 |
| 7.1.2 Analysis of collocation of time, aspect and voice and the MI of must | 第78-82页 |
| 7.2 Analysis of structural partial-ordered object diagram | 第82-87页 |
| 7.3 Summary | 第87-90页 |
| Chapter 8 Conclusion | 第90-94页 |
| 8.1 Main findings | 第90-91页 |
| 8.2 Implications | 第91页 |
| 8.3 Limitations | 第91-92页 |
| 8.4 Suggestions for further study | 第92-94页 |
| References | 第94-104页 |
| Appendix I | 第104-112页 |
| Appendix II | 第112-120页 |
| Appendix III | 第120-124页 |
| Appendix IV | 第124-128页 |
| Acknowledgements | 第128页 |
