| Acknowledgements | 第1-6页 |
| Abstract | 第6-8页 |
| 摘要 | 第8-12页 |
| Chapter 1 Introduction | 第12-16页 |
| ·Background of the Study | 第12-13页 |
| ·Significance of the Study | 第13页 |
| ·Structure of the Thesis | 第13-16页 |
| Chapter 2 Literature Review | 第16-37页 |
| ·English Modals and Modality | 第16-21页 |
| ·Definitions of Modality | 第16-17页 |
| ·Types of Modality | 第17-19页 |
| ·Meanings of English Modals | 第19-20页 |
| ·Characteristics of English Modals | 第20-21页 |
| ·Study Approaches to English Modals | 第21-29页 |
| ·Studies from the Traditional Grammatical View | 第23-24页 |
| ·Studies from the Functional Grammatical View | 第24-26页 |
| ·Studies from the Cognitive Grammatical View | 第26-29页 |
| ·Previous Studies on EPIs | 第29-34页 |
| ·Studies from the Translation of EPIs | 第29-31页 |
| ·Studies from the Linguistic Internal Structure of EPIs | 第31-33页 |
| ·Studies from the Linguistic External Structure of EPIs | 第33-34页 |
| ·Cognitive Semantics | 第34-37页 |
| Chapter 3 Theoretical Framework and Methodology | 第37-48页 |
| ·Talmy’s Force Dynamic Modal | 第37-43页 |
| ·Agonist and Antagonist | 第38-39页 |
| ·Force Scale | 第39-42页 |
| ·Patterns of Force Dynamics | 第42-43页 |
| ·Methodology | 第43-48页 |
| ·Reasearch Question | 第44页 |
| ·Data Collection | 第44-46页 |
| ·Data Presentation | 第46-48页 |
| Chapter 4 Cognitive Analysis of English Modals in EPIs taking ECIs as an example | 第48-66页 |
| ·Three Patterns of Force Dynamic Modals In EPIs | 第48-64页 |
| ·Physical-dynamic Modal Pattern | 第48-56页 |
| ·Force Scale of Modals | 第50-54页 |
| ·Modal Sources and Modal Agents | 第54-56页 |
| ·Psycho-dynamic Modal Pattern | 第56-60页 |
| ·Body-mind Separation of Modals | 第56-58页 |
| ·Agent-patient Opposition of Modals | 第58-60页 |
| ·Social-dynamic Modal Pattern | 第60-64页 |
| ·Power Relations of Modals | 第61-62页 |
| ·Power Roles of Modals | 第62-64页 |
| ·Interactions of the Three Patterns in EPIs | 第64-66页 |
| Chapter 5 Conclusion | 第66-69页 |
| ·Major Findings | 第66-67页 |
| ·Limitations of the Study | 第67-68页 |
| ·Suggestions for Further Study | 第68-69页 |
| References | 第69-70页 |
