| 摘要 | 第1-5页 |
| Abstract | 第5-10页 |
| Chapter Ⅰ Introduction | 第10-14页 |
| ·Origin of the study | 第10-12页 |
| ·Structure of the thesis | 第12-14页 |
| Chapter Ⅱ Literature Review | 第14-25页 |
| ·Definitions of code-switching | 第14-16页 |
| ·Types of code-switching | 第16-17页 |
| ·Approaches to the study of code-switching | 第17-25页 |
| ·The sociolinguistic approach | 第18-20页 |
| ·The grammatical approach | 第20-21页 |
| ·The psycholinguistic approach | 第21-22页 |
| ·The conversational analysis approach | 第22-23页 |
| ·The pragmatic approach | 第23-25页 |
| Chapter Ⅲ Theoretical Framework | 第25-37页 |
| ·Verschueren's Linguistic Adaptation Theory | 第25-30页 |
| ·Language choices | 第26页 |
| ·Variability,negotiability and adaptability | 第26-27页 |
| ·Four angles of investigation | 第27-30页 |
| ·Application of Adaptation Theory in code-switching study---Adaptation Model | 第30-35页 |
| ·The Adaptation Model for code-switching study | 第31-33页 |
| ·Code-switching as realization of adaptation | 第33-35页 |
| ·The framework of the present study | 第35-37页 |
| Chapter Ⅳ Research Methodology | 第37-41页 |
| ·Research methodology of the present study | 第37页 |
| ·About BBS | 第37-38页 |
| ·A brief introduction of BBS | 第37-38页 |
| ·BBS in this paper | 第38页 |
| ·Data collection for the present study | 第38-40页 |
| ·Data from the questionnaire | 第39页 |
| ·Data from collected extracts | 第39-40页 |
| ·Research questions | 第40-41页 |
| Chapter Ⅴ Results and Discussion | 第41-67页 |
| ·Negotiability of Chinese/English code-switching in BBS | 第41-42页 |
| ·Variability of Chinese/English code-switching in BBS | 第42-43页 |
| ·Chinese/English code-switching in BBS as adaptation to linguistic reality | 第43-50页 |
| ·Filling lexical gaps | 第45-46页 |
| ·Avoiding ambiguity | 第46页 |
| ·Seeking convenience | 第46-49页 |
| ·Using accurate quotations | 第49-50页 |
| ·Chinese/English code-switching in BBS as adaptation to social conventions | 第50-53页 |
| ·Avoiding taboos | 第51-52页 |
| ·Showing politeness | 第52-53页 |
| ·Chinese/English code-switching in BBS as adaptation to psychological motivations | 第53-60页 |
| ·Adopting humor-creating strategy | 第54-56页 |
| ·Seeking Fashion | 第56-57页 |
| ·Pulling close social distance | 第57-58页 |
| ·Emphasizing & contrasting | 第58-59页 |
| ·Showing off | 第59-60页 |
| ·Other motivations | 第60-61页 |
| ·A statistical analysis | 第61-65页 |
| ·Analysis of the frequency of BBSers' Chinese/English code-switching | 第61-63页 |
| ·Analysis of the motivations triggering BBS participants' Chinese/English code-switching | 第63-64页 |
| ·Analysis of the form of BBS participants' Chinese/English code-switching | 第64-65页 |
| ·Characteristics of Chinese/English code-switching in BBS | 第65-67页 |
| Chapter Ⅵ Conclusion | 第67-71页 |
| ·Findings of the present study | 第67-69页 |
| ·limitations and suggestions | 第69-71页 |
| Bibliography | 第71-74页 |
| Acknowledgements | 第74-75页 |
| Appendix | 第75-76页 |
