| ACKNOWLEDGEMENTS | 第8-9页 |
| ABSTRACT | 第9-10页 |
| 摘要 | 第11-17页 |
| CHAPTER I INTRODUCTION | 第17-21页 |
| 1.1 Introduction | 第17-18页 |
| 1.2 The Rationale of the Present Study | 第18页 |
| 1.3 Organization of the Thesis | 第18-21页 |
| CHAPTER II LITERATURE REVIEW | 第21-35页 |
| 2.1 Definitions | 第21-22页 |
| 2.1.1 Definition of Code | 第21-22页 |
| 2.1.2 Definition of Code-switching | 第22页 |
| 2.2 Code-switching and Code-mixing | 第22-23页 |
| 2.3 Code-switching and Code-borrowing | 第23-24页 |
| 2.4 Types of Code-switching | 第24-26页 |
| 2.5 Different Approaches to Code-switching | 第26-31页 |
| 2.5.1 The Sociolinguistic Approach | 第26-27页 |
| 2.5.2 The Grammatical Approach | 第27-28页 |
| 2.5.3 The Psycholinguistic Approach | 第28-29页 |
| 2.5.4 The Conversational Analysis Approach | 第29-30页 |
| 2.5.5 The Pragmatic Approach | 第30-31页 |
| 2.6 The Previous Studies on Chinese/English Code-switching | 第31-34页 |
| 2.6.1 A Brief Description of Microblog | 第31-33页 |
| 2.6.1.1 Definition | 第31-32页 |
| 2.6.1.2 Characteristics and Classification of Microblogs | 第32-33页 |
| 2.6.2 The Previous Studies on Chinese/English Code-switching in the CMC | 第33-34页 |
| 2.7 Summary | 第34-35页 |
| CHAPTER III THEORETICAL FRAMEWORK | 第35-47页 |
| 3.1 Matrix Language Frame Model | 第35-38页 |
| 3.1.1 Matrix Language and Embedded Language | 第35-36页 |
| 3.1.2 System Morphemes and Content Morphemes | 第36页 |
| 3.1.3 Three Types of Constituents | 第36-37页 |
| 3.1.4 The Matrix Language Hypothesis | 第37-38页 |
| 3.1.5 Summary | 第38页 |
| 3.2 Verschueren’s Linguistic Adaptation Theory | 第38-42页 |
| 3.2.1 Linguistic Choices | 第38页 |
| 3.2.2 Three Properties of Language | 第38-39页 |
| 3.2.3 Framework of Linguistic Adaptation Theory | 第39-42页 |
| 3.3 Yu’s Linguistic Adaptation Model | 第42-45页 |
| 3.3.1 Basic Framework | 第42-44页 |
| 3.3.2 Code-switching as Realization of Adaptation | 第44-45页 |
| 3.4 The Analytical Framework of the Presented Study | 第45-47页 |
| CHAPTER IV METHODOLOGY | 第47-53页 |
| 4.1 The Objectives of the Present Study | 第47页 |
| 4.2 Research Methods | 第47-48页 |
| 4.3 Data Description | 第48-53页 |
| 4.3.1 Data Sources from Microblogs | 第48页 |
| 4.3.2 Coding Principles | 第48-49页 |
| 4.3.3 Data Sources from the Questionnaire | 第49-53页 |
| CHAPTER V RESULTS AND DISCUSSION | 第53-87页 |
| 5.1 Linguistic Features of Chinese/English Code-switching in Microblog | 第53-66页 |
| 5.1.1The Linguistic Units | 第53-63页 |
| 5.1.1.1 Analysis of Inflectional Morphemes | 第54-55页 |
| 5.1.1.2 Analysis of Letters | 第55-57页 |
| 5.1.1.3 Analysis of Words | 第57-60页 |
| 5.1.1.4 Analysis of Phrases | 第60-61页 |
| 5.1.1.5 Analysis of Clauses and Discourses | 第61-63页 |
| 5.1.2 Types of Chinese/English Code-switching | 第63-66页 |
| 5.1.2.1 The Rationale of Classification | 第63-64页 |
| 5.1.2.2 Three Types | 第64-66页 |
| 5.2 The Grammatical Constraints on Chinese/English Code-switching | 第66-73页 |
| 5.2.1 Nouns | 第67-68页 |
| 5.2.2 Verbs | 第68-69页 |
| 5.2.3 Adjectives | 第69-70页 |
| 5.2.4 Noun Phases | 第70-71页 |
| 5.2.5 Verbs Phrases | 第71-73页 |
| 5.3 Motivations and Functions of Chinese/English code-switching in Microblog | 第73-84页 |
| 5.3.1 Code-switching as Adaptation to the Linguistic Reality | 第73-77页 |
| 5.3.1.1 Adaptation to the Linguistic Existence of Chinese and English | 第73-76页 |
| 5.3.1.2 Adaptation to the Linguistic Features of Chinese and English | 第76-77页 |
| 5.3.2 Code-switching as Adaptation to the Social Conventions | 第77-78页 |
| 5.3.3 Code-switching as Adaptation to the Psychological Motivation | 第78-84页 |
| 5.3.3.1 Code-switching as an Identity Concealing Strategy | 第79页 |
| 5.3.3.2 Code-switching as an Example Giving Strategy | 第79-80页 |
| 5.3.3.3 Code-switching as an Authenticity keeping Strategy | 第80-81页 |
| 5.3.3.4 Code-switching as a Convenience Seek Strategy | 第81-82页 |
| 5.3.3.5 Code-switching as a Fashion Seek Strategy | 第82-83页 |
| 5.3.3.6 Code-switching as an Explaining Strategy | 第83页 |
| 5.3.3.7 Code-switching as a Humor Creating Strategy | 第83-84页 |
| 5.3.3.8 Code-switching as a Pun Creating Strategy | 第84页 |
| 5.4 Summary | 第84-87页 |
| Chapter VI CONCLUSIONS AND IMPLICATIONS | 第87-91页 |
| 6.1 Major Findings | 第87-88页 |
| 6.2 Implications | 第88-89页 |
| 6.2.1 Theoretical Significance | 第88页 |
| 6.2.2 Practical Significance | 第88-89页 |
| 6.3 Limitations of the Present Study | 第89页 |
| 6.4 Suggestions for Future Research | 第89-91页 |
| REFERENCES | 第91-94页 |
| APPENDIX | 第94-96页 |
