| 摘要 | 第4-5页 |
| Abstract | 第5-6页 |
| Acknowledgements | 第7-11页 |
| Abbreviations | 第11-13页 |
| Chapter One Introduction | 第13-20页 |
| 1.1 Rationale of the study | 第13-17页 |
| 1.2 Objectives of the Study | 第17-18页 |
| 1.3 Layout of the Thesis | 第18-20页 |
| Chapter Two Literature Review | 第20-29页 |
| 2.1 Review of Studies on Word Classes | 第20-24页 |
| 2.1.1 Previous Studies on the Essence of Word Classes | 第20-21页 |
| 2.1.2 Previous Studies on Criteria of Word Classes Classification | 第21-24页 |
| 2.2 Previous Studies on Heterosemy | 第24-27页 |
| 2.2.1 Previous Studies on Heterosemy in Chinese | 第25-26页 |
| 2.2.2 Previous Studies on Heterosemy in English | 第26-27页 |
| 2.3 Summary | 第27-29页 |
| Chapter Three Theoretical Foundation | 第29-39页 |
| 3.1 The Theoretical Background | 第29-36页 |
| 3.1.1 The Theory of Language as a Complex Adaptive System | 第30-31页 |
| 3.1.2 The Theory of Norms and Exploitations | 第31-35页 |
| 3.1.2.1 Meaning Events and Meaning Potentials | 第32-33页 |
| 3.1.2.2 Norms and Exploitations | 第33-35页 |
| 3.1.3 The Usage-based Theory | 第35-36页 |
| 3.2 The Two-level Word Class Categorization in Analytic Languages | 第36-38页 |
| 3.3 Summary | 第38-39页 |
| Chapter Four Research Design | 第39-43页 |
| 4.1 Dictionaries Used in the Study | 第39-41页 |
| 4.2 Procedures | 第41-42页 |
| 4.2.1 Data Collection | 第41页 |
| 4.2.2 Data Processing | 第41-42页 |
| 4.3 Summary | 第42-43页 |
| Chapter Five Results and Discussion | 第43-60页 |
| 5.1 Overall Description of Statistical Results | 第43-50页 |
| 5.1.1 Data Description of Multiple Category Words in the AHD-5 | 第43-45页 |
| 5.1.2 The Internal Structure of Heterosemy in the AHD-5 | 第45-50页 |
| 5.2 Discussion | 第50-58页 |
| 5.2.1 Discussion of the Quantity of Multiple Category Words in the AHD-5 | 第51-52页 |
| 5.2.2 Discussion of the Isolating Mode in Modern English | 第52页 |
| 5.2.3 Discussion of the Comparison of Multiple Category Lexemes betweenOALD -7 and the AHD-5 | 第52-56页 |
| 5.2.3.1 Comparison on the Amount of Multiple Category Lexemes inOALD-7 and the AHD-5 | 第53-54页 |
| 5.2.3.2 Comparison on the Internal Structure of Multiple CategoryLexemes between OALD-7 and the AHD-5 | 第54-56页 |
| 5.2.4 Discussion of the Comparison of Multiple Category Lexemes betweenCCD-6 and the AHD-5 | 第56-58页 |
| 5.2.4.1 Comparison on the Amount of Multiple Category Words inCCD-6 and the AHD-5 | 第57页 |
| 5.2.4.2 Comparison on the Internal Structure of Multiple CategoryWords between CCD-6 and the AHD-5 | 第57-58页 |
| 5.3 Summary | 第58-60页 |
| Chapter Six Conclusion | 第60-64页 |
| 6.1 Major Findings of the Study | 第60-62页 |
| 6.2 Limitations of the Study | 第62页 |
| 6.3 Suggestions for Further Study | 第62-64页 |
| References | 第64-68页 |
| Appendices | 第68-122页 |
| Appendix 1 Two Category Lexemes in the AHD-5 | 第68-117页 |
| Appendix 2 Three Category Lexemes in the AHD-5 | 第117-121页 |
| Appendix 3 Four Category Lexemes in the AHD- 5 | 第121-122页 |
| Appendix 4 Five Category Lexemes in the AHD-5 | 第122页 |
