| 摘要 | 第5-6页 |
| Abstract | 第6-7页 |
| Abbreviations | 第11-14页 |
| Chapter 1 Introduction | 第14-20页 |
| 1.1 Research Background | 第14-16页 |
| 1.2 Research Question and Research Significance | 第16页 |
| 1.3 Rationale of the Research | 第16-18页 |
| 1.4 Outline of the Research | 第18-20页 |
| Chapter 2 Literature Review | 第20-30页 |
| 2.1 Studies on English Modality | 第20-22页 |
| 2.1.1 Studies on Modality Abroad | 第20-21页 |
| 2.1.2 Studies on Modality at home | 第21-22页 |
| 2.2 Studies on WSD | 第22-24页 |
| 2.2.1 Studies on WSD Abroad | 第22-23页 |
| 2.2.2 Studies on WSD at Home | 第23-24页 |
| 2.3 Studies on Formal Concept Analysis | 第24-26页 |
| 2.4 Studies on Knowledge Discovery | 第26-27页 |
| 2.5 Studies on Features of Attributes | 第27页 |
| 2.6 Space for Present Study | 第27-30页 |
| Chapter 3 Data Collection | 第30-38页 |
| 3.1 Research Methods | 第30-31页 |
| 3.2 Software Used in This Research | 第31-32页 |
| 3.3 Research Procedures | 第32-34页 |
| 3.4 Data Collection | 第34-35页 |
| 3.5 Summary | 第35-38页 |
| Chapter 4 Semantic Categorization of English Modal Verb must | 第38-44页 |
| 4.1 Reasons for Choosing must as the Target Verb | 第38-39页 |
| 4.2 Sense Categorization of must | 第39-42页 |
| 4.2.1 The Definitions of Oxford Advanced Learner’s English-Chinese Dictionary of must | 第39-40页 |
| 4.2.2 Coates’ (1983) Division of Meanings of must | 第40-42页 |
| 4.3 Summary | 第42-44页 |
| Chapter 5 Word Sense Disambiguation of must by APOSD | 第44-58页 |
| 5.1 Tagging the Corpus | 第44-45页 |
| 5.2 Extracting Sample Sentences | 第45-46页 |
| 5.3 Calculating of Mutual Information | 第46-48页 |
| 5.4 Creating catter Diagram and Dividing the Interval | 第48-51页 |
| 5.5 Extracting Syntactic Features | 第51-52页 |
| 5.6 Constructing Formal Context | 第52-55页 |
| 5.7 Generating APOSD for Modal Verb must | 第55-57页 |
| 5.8 Summary | 第57-58页 |
| Chapter 6 Analysis of Features of Attributes | 第58-70页 |
| 6.1 Simplifying the Formal Context and Generating the APOSD | 第58-60页 |
| 6.2 Analysis of Features of Attribute of Modal Verb must | 第60-68页 |
| 6.2.1 Composite Class Exclusive Attributes of Modal Verb must | 第62-65页 |
| 6.2.2 Maximum Common Attribute of Modal Verb must | 第65-66页 |
| 6.2.3 Simple Class Exclusive Attribute of Modal Verb must | 第66-67页 |
| 6.2.4 Opposite Attribute of Modal Verb must | 第67-68页 |
| 6.3 Summary | 第68-70页 |
| Chapter 7 Conclusion | 第70-74页 |
| 7.1 Major Findings | 第70-71页 |
| 7.2 Implications of the Study | 第71页 |
| 7.3 Limitations and Suggestions for the Future Study | 第71-74页 |
| References | 第74-80页 |
| Appendix Ⅰ | 第80-83页 |
| Appendix Ⅱ | 第83-84页 |
| Acknowledgements | 第84页 |
