| Abstract | 第1-7页 |
| 摘要 | 第7-8页 |
| Content | 第8-10页 |
| Chapter One Introduction | 第10-13页 |
| ·Significance of the Research | 第10-11页 |
| ·Organization of this Thesis | 第11-13页 |
| Chapter Two Literature Review | 第13-29页 |
| ·Present Study of Modality | 第13-18页 |
| ·The Ambiguity View of Modality | 第13页 |
| ·The Polysemy View of Modality | 第13-15页 |
| ·The Monosemy View of Modality | 第15-17页 |
| ·A Relevance-Theoretic View of Modality | 第17-18页 |
| ·The Previous Study of Context | 第18-22页 |
| ·R. Firth's Period | 第19-20页 |
| ·The Period of Bronislaw Malinowski | 第20-21页 |
| ·M.A.K Halliday's Contributions | 第21-22页 |
| ·The Classification of the Context at Home and Abroad | 第22-24页 |
| ·The Classification of Context of Foreign Scholars | 第22-23页 |
| ·The Classification of Context of Scholars at Home | 第23-24页 |
| ·The Restrictive Function of Context | 第24-29页 |
| ·Restrictive Function of Situational Context | 第26-27页 |
| ·Restrictive Function of Social and Cultural Context | 第27-29页 |
| Chapter Three Theoretical Framework-Modality | 第29-45页 |
| ·The Definition of Modality | 第29-31页 |
| ·The Types of Meanings of Modality | 第31-34页 |
| ·Dynamic Modality | 第31-32页 |
| ·Deontic Modality | 第32-33页 |
| ·Epistemic Modality | 第33-34页 |
| ·The Subjectivity and Objectivity of Modality | 第34-36页 |
| ·The Semantic Category of Modality | 第36-39页 |
| ·The Pragmatic Category of Modality | 第39-45页 |
| ·The Pragmatic Category of Can | 第40-42页 |
| ·The Pragmatic Category of May | 第42-43页 |
| ·The Pragmatic Category of Will | 第43-45页 |
| Chapter Four The Influence of Context on Modality | 第45-51页 |
| ·The Relationship between Modality and Context | 第45-46页 |
| ·The Influence of Context on the Interpretation of Modality Meaning | 第46-51页 |
| ·The Influence of Situational Context on the Interpretation of Modality | 第47-48页 |
| ·The Influence of Cultural Context on the Interpretation of Modality | 第48-51页 |
| Chapter Five Conclusion | 第51-54页 |
| Bibliography | 第54-58页 |
| Acknowledgements | 第58页 |
