| Acknowledgements | 第1-5页 |
| Abstract | 第5-7页 |
| 摘 要 | 第7-11页 |
| 1 Introduction | 第11-16页 |
| 2 Literature Review | 第16-26页 |
| ·Prototype Theory and the prototype effects in language | 第16-18页 |
| ·Applications of Prototype Theory to lexical semantics | 第18-19页 |
| ·Implications of Prototype Theory for polysemy research | 第19-22页 |
| ·Prototypes and meaning extension: influencing factors and related principles | 第22-26页 |
| 3 Research Design | 第26-31页 |
| ·Participants | 第26页 |
| ·Instruments | 第26-30页 |
| ·Data collection and analysis | 第30-31页 |
| 4 Results | 第31-47页 |
| ·The free elicitation test results | 第31-34页 |
| ·The word association test results | 第34-35页 |
| ·The typicality rating test results | 第35-38页 |
| ·Descriptive statistics of translatability rating results | 第38-39页 |
| ·A comparison of the three rating results | 第39-40页 |
| ·The comparison of TRTN and TRTC1 by t-test | 第40-41页 |
| ·The correlation analysis | 第41-43页 |
| ·Word uses in actual discourse | 第43-47页 |
| 5 Discussion | 第47-58页 |
| ·The prototype identity in L2 and native language context | 第47-48页 |
| ·Prototypes and meaning extension: overlaps and differences | 第48页 |
| ·The influence of L1 on L2 meaning extension | 第48-49页 |
| ·The differences in meaning extension | 第49-50页 |
| ·Principles guiding meaning extension by native speakers | 第50-55页 |
| ·Implications for vocabulary acquisition | 第55-58页 |
| 6 Conclusion | 第58-60页 |
| ·Main findings | 第58页 |
| ·Limitations of this study and suggested research | 第58-60页 |
| Bibliography | 第60-66页 |
| Appendix (I) | 第66-69页 |
| Appendix (II) | 第69-70页 |
