| Acknowledgements | 第1-7页 |
| 中文摘要 | 第7-8页 |
| ABSTRACT | 第8-12页 |
| Chapter 1 Introduction | 第12-14页 |
| ·Background | 第12页 |
| ·Purpose and Significance of the Study | 第12-14页 |
| Chapter 2 Literature Review | 第14-24页 |
| ·Definitions of Code-switching | 第14-15页 |
| ·The Categories of Code-switching | 第15-18页 |
| ·Situational and Metaphorical Code-switching | 第15-16页 |
| ·Inter-Sentential,Intra-Sentential and Tag Code-switching | 第16-17页 |
| ·Discourse-Related and Preference-Related Code-switching | 第17页 |
| ·Alternation,Insertion and Congruent Lexicalization | 第17-18页 |
| ·Approaches to the Analysis of Code-switching | 第18-22页 |
| ·The Grammatical Approach | 第18-19页 |
| ·The Sociolinguistic Approach | 第19-21页 |
| ·The Psycholinguistic Approach | 第21页 |
| ·The Conversational Analysis Approach | 第21-22页 |
| ·Existing Studies on Code-switching | 第22-24页 |
| Chapter 3 Theoretical Framework | 第24-31页 |
| ·A Brief Introduction to the Adaptation Theory | 第24-27页 |
| ·Verschueren's Linguistic Adaptation Theory | 第24页 |
| ·Three Properties of Linguistic Adaptation Theory | 第24-26页 |
| ·Four Angles of Linguistic Adaptation | 第26-27页 |
| ·Code-switching as a Process of Choice Making | 第27-28页 |
| ·Code-switching as Realization of Adaptation | 第28-29页 |
| ·Description of the Analytical Framework | 第29-31页 |
| Chapter 4 Research Methodology and Data Analysis | 第31-37页 |
| ·Research Methodology | 第31-32页 |
| ·Data Collection and Analysis | 第32-36页 |
| ·Forms of Code-switching in Chinese Popular Songs | 第32-33页 |
| ·Periods of Chinese Popular Songs with Code-switching | 第33-34页 |
| ·Regions of Chinese Popular Songs with Code-switching | 第34-35页 |
| ·Factors Influencing Code-switching in Chinese Popular Songs | 第35-36页 |
| ·Summary | 第36-37页 |
| Chapter 5 Realization of the Adaptation Model in Chinese Popular Songs | 第37-53页 |
| ·Introduction | 第37页 |
| ·Code-switching as Adaptation to Linguistic Reality | 第37-44页 |
| ·Filling Linguistic Vacancy | 第38-39页 |
| ·Mentioning Foreign Products and Concepts | 第39-41页 |
| ·Conforming to the Principle of Economy | 第41-43页 |
| ·Emphasizing | 第43-44页 |
| ·Code-switching as Adaptation to Social Conventions | 第44-47页 |
| ·Elevating Social Status | 第44-45页 |
| ·Following Social Norms | 第45-47页 |
| ·Code-switching as Adaptation to Psychological Motivations | 第47-52页 |
| ·Code-switching as Humor-creating Strategy | 第47-48页 |
| ·Code-switching as Rhyme-constructing Strategy | 第48-49页 |
| ·Code-switching as Foreign Flavor Gaining Strategy | 第49-50页 |
| ·Code-switching as Fashion Seeking Strategy | 第50-51页 |
| ·Code-switching as Face Saving Strategy | 第51-52页 |
| ·Summary | 第52-53页 |
| Chapter 6 Conclusion | 第53-55页 |
| Bibliography | 第55-57页 |
| 作者简历 | 第57-59页 |
| 学位论文数据集 | 第59页 |
