| Acknowledgments | 第1-6页 |
| Abstract in Chinese | 第6-8页 |
| Abstract in English | 第8-12页 |
| 1 Introduction | 第12-16页 |
| ·Research background | 第12-13页 |
| ·Research objectives and significance | 第13-14页 |
| ·Thesis layout | 第14-16页 |
| 2 Literature Review | 第16-25页 |
| ·An introduction of relevant conceptions and theories | 第16-21页 |
| ·Introduction of network nonce words | 第16-20页 |
| ·Phonetic metaphor and pun | 第20-21页 |
| ·Conceptual metaphor | 第21-23页 |
| ·Introduction of conceptual metaphor | 第21-22页 |
| ·Classification of conceptual metaphor | 第22-23页 |
| ·Review of empirical studies | 第23-25页 |
| 3 The Cognitive Change of Beiju and Its Derivative Words | 第25-38页 |
| ·A brief introduction of Beiju | 第25-30页 |
| ·The origin and popularity of Beiju on the network | 第25-26页 |
| ·The word-formation from tragedy to Beiju on the network | 第26页 |
| ·The change of semantic features from tragedy to Beiju | 第26-29页 |
| ·The change of syntactic features from tragedy to Beiju | 第29-30页 |
| ·Beiju-based derivative words and expressions | 第30-33页 |
| ·The brief introduction of Beiju derivative words | 第30页 |
| ·The word-formation of Beiju-based derivative words | 第30-33页 |
| ·The metaphors in Beiju-based derivative words and expressions | 第33-38页 |
| ·The phonetic metaphor and pun in Beiju-based expressions | 第33-34页 |
| ·The conceptual metaphor in Beiju-based expressions | 第34-38页 |
| 4 A Study on the Acquisition of Beiju and Its Derivative words | 第38-44页 |
| ·Research objectives | 第38页 |
| ·Research questions | 第38页 |
| ·Participants | 第38-39页 |
| ·Instrument | 第39页 |
| ·Procedures | 第39-40页 |
| ·Reliability and validity of the questionnaire | 第40页 |
| ·Results | 第40-42页 |
| ·Results for the first research objective | 第40-41页 |
| ·Results for the second research objective | 第41-42页 |
| ·Implication of the study | 第42-44页 |
| ·Language acquisition of the network nonce words | 第42页 |
| ·Language teaching of network nonce words | 第42-44页 |
| 5 Conclusion | 第44-46页 |
| ·Summary | 第44-45页 |
| ·Limitations of the thesis | 第45页 |
| ·Recommendations for future research | 第45-46页 |
| Bibliography | 第46-47页 |
| Appendix | 第47-48页 |
