| 摘要 | 第3-4页 |
| Abstract | 第4-5页 |
| Contents | 第6-8页 |
| Chapter One Introduction | 第8-12页 |
| Chapter Two Literature Review | 第12-17页 |
| 2.1 The Theoretical Bases of Polysemy | 第12-13页 |
| 2.2 The Historical and Social Reasons about the Study of Polysemy | 第13-15页 |
| 2.3 The Present Situation of Vocabulary Study | 第15-17页 |
| Chapter Three Prototype and Polysemy | 第17-27页 |
| 3.1 Prototype Theory | 第17-19页 |
| 3.2 The Relationships between Prototype Theory and Polysemy | 第19-22页 |
| 3.2.1 Various Senses of a Category Deriving From Prototype | 第20页 |
| 3.2.2 The Structure of Polysemy and Family Resemblances | 第20-21页 |
| 3.2.3 Sub Prototypes of a Category | 第21-22页 |
| 3.2.4 The Fuzzy Boundary of the Semantic Categories | 第22页 |
| 3.3 Cognitive Metaphor | 第22-23页 |
| 3.4 The Relationships between Prototype and Cognitive Metaphor | 第23-27页 |
| Chapter Four Metaphorical Extensions of "over" Based on Prototype Theory | 第27-42页 |
| 4.1 The Analysis of "over" Based on Prototype Theory | 第27-32页 |
| 4.2 The Explanation of "over" with the Help of Spatial Metaphor | 第32-42页 |
| Chapter Five Learning Strategies of Preposition "over" | 第42-50页 |
| 5.1 The Methods of Traditional Teaching | 第42-43页 |
| 5.2 The Specific Survey Conducted by the Author | 第43-46页 |
| 5.3 The Strategies Based on Prototype Theory | 第46-50页 |
| Conclusion | 第50-53页 |
| References | 第53-56页 |
| 攻读学位期间的研究成果 | 第56-57页 |
| Acknowledgements | 第57-58页 |
