| 摘要 | 第1-9页 |
| Abstract | 第9-11页 |
| Chapter One Introduction | 第11-22页 |
| ·Academic Background | 第11-19页 |
| ·Research History of Modality | 第11-13页 |
| ·Research Methods of Modality | 第13-19页 |
| ·Modality Research in Traditional Grammar | 第13-15页 |
| ·Modality Research in Modal Logic | 第15-16页 |
| ·Modality Research in Transformational Generative Grammar | 第16-17页 |
| ·Modality Research in Systemic Functional Grammar | 第17-18页 |
| ·Cognitive Research of Modality Research | 第18-19页 |
| ·Significance of Choosing the Topic | 第19-20页 |
| ·Structure of Thesis | 第20-22页 |
| Chapter Two Theoretical Foundations | 第22-39页 |
| ·Definitions of Modality | 第22-24页 |
| ·Classifications of Modality | 第24-32页 |
| ·Epistemic Modality and Deontic Modality | 第26-29页 |
| ·Dynamic Modality | 第29-30页 |
| ·Evidential Modality | 第30-31页 |
| ·Alethic Modality | 第31-32页 |
| ·Expressions of Modality | 第32-37页 |
| ·Modal Auxiliaries | 第32-34页 |
| ·Non- modal Auxiliaries | 第34-36页 |
| ·Linguistic Devices | 第36-37页 |
| ·Some Basic Concepts Related to Modality | 第37-39页 |
| ·Realis and Irrealis | 第37页 |
| ·Mood and Modality | 第37-39页 |
| Chapter Three Subjectivity and Objectivity of Modality | 第39-65页 |
| ·Distinctions between Subjectivity and Objectivity | 第39-41页 |
| ·Subjectivity and Objectivity of Language | 第41-44页 |
| ·Subjectivity-objectivity as Speaker-relatedness | 第41-42页 |
| ·Subjectivity-objectivity as Explicit Presence of the Speaker | 第42-44页 |
| ·Grammatical Conditions of Subjectivity and Objectivity | 第44-46页 |
| ·Subjective Modality and Objective Modality | 第46-49页 |
| ·Definitions of Subjective Modality and Objective Modality | 第46-48页 |
| ·Distinctions and Relations between Subjective Modality and Objectiv Modality | 第48-49页 |
| ·Subjectivity-objectivity of Ddeontic Modality | 第49-54页 |
| ·Willingness of Speakers | 第50-51页 |
| ·Judgment of Speakers | 第51-53页 |
| ·Other Features of Subjectivity-objectivity of Deontic Modality | 第53-54页 |
| ·Semantic Distinctions of Modal Expressions between Modal Verbs and Non-modal Verbs | 第53页 |
| ·Formal Features of Subjectivisation of English Modal Verbs | 第53-54页 |
| ·Subjectivity-objectivity of Epistemic Modality | 第54-57页 |
| ·Subjectivity-objectivity of Modal Auxiliaries in Syntax | 第57-62页 |
| ·Modal Auxiliaries in Conditions | 第57-59页 |
| ·Modal Auxiliaries in Interrogation | 第59-61页 |
| ·Modal Auxiliaries and Tense | 第61-62页 |
| ·Subjective-objective Modality and Mood | 第62-65页 |
| Chapter Four Conclusion | 第65-69页 |
| Notes | 第69-70页 |
| Bibliography | 第70-73页 |
| 攻读学位期间完成过的学术论文 | 第73-74页 |
| Acknowledgements | 第74页 |
