| Acknowledgments | 第5-6页 |
| 摘要 | 第6-8页 |
| Abstract | 第8-9页 |
| 1.Introduction | 第11-14页 |
| 1.1 Background of the study | 第11页 |
| 1.2 Significance of the study | 第11-12页 |
| 1.3 Methodology of the study | 第12-13页 |
| 1.4 Organization of the thesis | 第13-14页 |
| 2.Literature Review | 第14-17页 |
| 2.1 Definition of polysemy | 第14页 |
| 2.2 Development of studies on polysemy | 第14-15页 |
| 2.3 Cognitive studies on polysemy | 第15-17页 |
| 3.Theoretical Framework | 第17-23页 |
| 3.1 Categorization and prototype theory | 第17-21页 |
| 3.1.1 The Classical Theory of categorization | 第18页 |
| 3.1.2 The Prototype Theory of categorization | 第18-19页 |
| 3.1.3 Polysemy as a prototypical category | 第19-21页 |
| 3.2 Metaphor and metonymy | 第21-23页 |
| 4.Semantic Systems of Strong and Qiang | 第23-36页 |
| 4.1 Semantic system of strong | 第23-28页 |
| 4.2 Semantic system of qiang | 第28-33页 |
| 4.3 Comparison of the semantic systems of strong and qiang | 第33-36页 |
| 4.3.1 Similarities between the semantic systems of strong and qiang | 第33-34页 |
| 4.3.2 Differences between the semantic systems of strong and qiang | 第34-36页 |
| 5.Cognitive Analysis of The Meaning Extension of Strong and Qiang | 第36-47页 |
| 5.1 Analysis of strong | 第37-41页 |
| 5.2 Analysis of qiang | 第41-42页 |
| 5.3 The motivations of categorization of strong and qiang | 第42-47页 |
| 5.3.1 Prototype theory and the categorization of strong and qiang | 第42页 |
| 5.3.2 Metaphor/metonymy and the categorization of strong and qiang | 第42-47页 |
| 6.Conclusion | 第47-49页 |
| 6.1 Major findings | 第47-48页 |
| 6.2 Limitation of the thesis | 第48-49页 |
| Bibliography | 第49-50页 |
