| Acknowledgements | 第1-5页 |
| Abstract (Chinese) | 第5-6页 |
| Abstract (English) | 第6-9页 |
| Chapter One Introduction | 第9-12页 |
| ·Rationale of the Present Study | 第9-10页 |
| ·Objectives of the Thesis | 第10-11页 |
| ·Organization of the Thesis | 第11-12页 |
| Chapter Two Literature Review of Code-switching | 第12-22页 |
| ·Definitions of Code-switching | 第12-13页 |
| ·Types of Code-switching | 第13-14页 |
| ·An Overview of the Studies | 第14-19页 |
| ·Code-switching Studies Abroad | 第14-17页 |
| ·Code-switching Studies in China | 第17-19页 |
| ·Code-switching in Computer-mediated Communication (CMC) | 第19-21页 |
| ·Definition of CMC | 第19-20页 |
| ·Main Forms of CMC | 第20-21页 |
| ·Chinese/English Code-switching Phenomenon in CMC | 第21页 |
| ·Summary | 第21-22页 |
| Chapter Three The Conceptual Framework | 第22-32页 |
| ·Code-switching Study from Pragmatic Perspective | 第22页 |
| ·Linguistic Adaptation Theory | 第22-26页 |
| ·Language Choices | 第23页 |
| ·Variability, Negotiability and Adaptability | 第23-24页 |
| ·Four Angles of Pragmatic Study | 第24-26页 |
| ·The Adaptation Model of Code-switching Study | 第26-29页 |
| ·Code-switching as Linguistic Choice | 第26页 |
| ·Variability of Code-switching | 第26-27页 |
| ·Negotiability of Code-switching | 第27-28页 |
| ·Adaptability of Code-switching | 第28-29页 |
| ·Summary | 第29-32页 |
| Chapter Four Chinese/English Code-switching in CMC as Realization of Adaptation | 第32-54页 |
| ·Code-switching as Adaptation to the Linguistic Reality | 第32-40页 |
| ·Linguistic Reality | 第32-33页 |
| ·Adaptation to Linguistic Existence of English and Chinese | 第33-39页 |
| ·Adaptation to Linguistic Features of English and Chinese | 第39-40页 |
| ·Code-switching as Adaptation to the Social Conventions | 第40-44页 |
| ·Social Conventions | 第41页 |
| ·Social Taboos | 第41-42页 |
| ·Curse Talks | 第42-43页 |
| ·Sex and Sex-related Topics | 第43-44页 |
| ·Code-switching as Adaptation to the Psychological Motivations | 第44-52页 |
| ·Psychological Motivations | 第44-45页 |
| ·Code-switching as Explanation or Emphasis Strategy | 第45页 |
| ·Code-switching as Identity-concealing Strategy | 第45-46页 |
| ·Code-switching as Convenience-seeking Strategy | 第46-47页 |
| ·Code-switching as Face-saving Strategy | 第47-49页 |
| ·Code-switching as Fashion-seeking Strategy | 第49-51页 |
| ·Code-switching as Showing-off Strategy | 第51-52页 |
| ·Summary | 第52-54页 |
| Chapter Five Features of Code-switching in CMC | 第54-57页 |
| ·Blending of Chinese and English | 第54-55页 |
| ·Understanding Delay | 第55-56页 |
| ·Emotion Exposure | 第56页 |
| ·Summary | 第56-57页 |
| Chapter Six Conclusion | 第57-60页 |
| ·Findings of the Thesis | 第57-58页 |
| ·Significance of the Findings | 第58页 |
| ·Limitations and Suggestions for Further Study | 第58-60页 |
| Bibliography | 第60-64页 |
