| 1 Introduction | 第1-14页 |
| ·Research Background | 第9-11页 |
| ·Research Purpose and Design | 第11-12页 |
| ·Significance of the Research | 第12页 |
| ·Structure of the Thesis | 第12-14页 |
| 2 Literature Review and Theoretical Framework | 第14-27页 |
| ·Definitions and Types of Code-switching(CS) | 第14-16页 |
| ·Previous Studies on Code-switching | 第16-20页 |
| ·The Grammatical Approach | 第16-17页 |
| ·The Sociolinguistic Approach | 第17-18页 |
| ·The Conversational Approach | 第18页 |
| ·The Psycholinguistic Approach | 第18-19页 |
| ·The Pragmatic Approach | 第19-20页 |
| ·Theoretical Framework | 第20-27页 |
| ·Verschueren's Linguistic Adaptation Theory | 第20-22页 |
| ·Yu Guodong's Linguistic Adaptation Model | 第22-27页 |
| ·Linguistic Adaptation in Code-switching Process | 第23-24页 |
| ·Adaptability of Code-switching | 第24-25页 |
| ·Variability of Code-switching | 第25-27页 |
| 3 Research Methodology and Variability Analysis | 第27-43页 |
| ·Research Methodology of the Present Study | 第27页 |
| ·Data Collection | 第27-29页 |
| ·Variability of Code-switching in Distribution Patterns | 第29-43页 |
| ·Code-switching in Terms of Linguistic Units | 第30-36页 |
| ·Code-switching in Terms of Structural Complexity | 第36-37页 |
| ·Code-switching in Terms of Discourse Types | 第37-43页 |
| 4 CS Adaptability as a Result of Adaptation Principle | 第43-61页 |
| ·Code-switching as Adaptation to Linguistic Reality | 第43-51页 |
| ·Adaptation to the Linguistic Existence of Chinese and English | 第43-48页 |
| ·Adaptation to the Linguistic Features of Chinese and English | 第48-51页 |
| ·Code-switching as Adaptation to Social Conventions | 第51-54页 |
| ·Code-switching as Adaptation to Psychological Motivations | 第54-61页 |
| ·Code-switching as an Identity-concealing Strategy | 第54-55页 |
| ·Code-switching as a Convenience-seeklng Strategy | 第55页 |
| ·Code-switching as a Foreign Flavor Gaining Strategy | 第55-56页 |
| ·Code-switching as an Emphasizing Strategy | 第56-57页 |
| ·Code-switching as a Humor-creating Strategy | 第57-58页 |
| ·Code-switching as an Addressee-selection Strategy | 第58-61页 |
| 5 Conclusion | 第61-64页 |
| ·Findings of the Study | 第61-62页 |
| ·Limitations of the Study | 第62页 |
| ·Suggestions for Future Study | 第62-64页 |
| Acknowledgements | 第64-65页 |
| Bibliography | 第65-69页 |
| Article Published | 第69页 |
