| 摘要 | 第4-6页 |
| Abstract | 第6-8页 |
| Chapter One Introduction | 第12-19页 |
| 1.1 Research Background and Purposes | 第12-14页 |
| 1.2 Significance of the Study | 第14-17页 |
| 1.3 Structure of the Paper | 第17-19页 |
| Chapter Two Literature Review | 第19-39页 |
| 2.1 The Definition of Code-switching | 第19-20页 |
| 2.2 Classifications of Code-switching | 第20-21页 |
| 2.3 Main Approaches to Analysis of Code-switching | 第21-26页 |
| 2.3.1 Sociolinguistic Approach | 第22-23页 |
| 2.3.2 Psychological Approach | 第23页 |
| 2.3.3 Grammatical Approach | 第23-24页 |
| 2.3.4 Conversational Approach | 第24页 |
| 2.3.5 Pragmatic Approach | 第24-26页 |
| 2.4 Review of Empirical Studies in English Classrooms inForeign Countries and in China | 第26-30页 |
| 2.4.1 Review of Empirical Studies on Code-switching inForeign Countries | 第26-28页 |
| 2.4.2 Review of Empirical Studies on Code-switching in China | 第28-30页 |
| 2.5 Theory Framework | 第30-39页 |
| 2.5.1 Language Transfer | 第30-32页 |
| 2.5.2 Input Hypothesis | 第32-34页 |
| 2.5.3 Language Adaptation Theory | 第34-35页 |
| 2.5.4 Adaptation Model | 第35-39页 |
| Chapter Three Research Methodology | 第39-46页 |
| 3.1 Research Questions | 第39页 |
| 3.2 Research Participants | 第39-43页 |
| 3.2.1 Participants of the Classroom Observation | 第39-41页 |
| 3.2.2 Participants of the Questionnaire | 第41-42页 |
| 3.2.3 Participants of the Interview | 第42-43页 |
| 3.3 Research Instruments | 第43-44页 |
| 3.3.1 Classroom Observation | 第43页 |
| 3.3.2 Students’ and Teachers’ Questionnaire | 第43-44页 |
| 3.3.3 Teachers’ Interview | 第44页 |
| 3.4 Research Procedure | 第44-45页 |
| 3.5 Data Analysis | 第45-46页 |
| Chapter Four Findings and Analysis | 第46-72页 |
| 4.1 Findings and Analysis of the Classroom Observation | 第46-49页 |
| 4.1.1 The Frequency of Code-switching Among Different Types of Lessons. | 第46-48页 |
| 4.1.2 The Frequency of Code-switching in Different Grades | 第48-49页 |
| 4.2 Findings and Analysis of the Questionnaire | 第49-61页 |
| 4.2.1 The Frequency and Consciousness of Teachers’ Code-switching | 第49-50页 |
| 4.2.2 Students’ and Teachers’ Attitudes Towards Code-switching inEnglish Classes | 第50-58页 |
| 4.2.2.1 Students’ and Teachers’ General AttitudesTowards Code-switching in English Classes | 第51-52页 |
| 4.2.2.2 Students’ and Teachers’ Attitudes Towards the Frequency ofClassroom Code-switching | 第52页 |
| 4.2.2.3 Students’ and Teachers’ Attitudes Towards the Amount ofClassroom Code-switching | 第52-55页 |
| 4.2.2.4 Students’ and Teachers’ Attitudes Towards the Effect ofCode-switching | 第55-56页 |
| 4.2.2.5 Students’ and Teachers’ Attitudes Towards the Situations WhereChinese Should Be Increased | 第56-58页 |
| 4.2.3 The Reasons for Teachers’ Code-switching | 第58-61页 |
| 4.2.3.1 The Reasons from Students’ Questionnaire | 第58-59页 |
| 4.2.3.2 The Reasons from Teachers’ Questionnaire | 第59-61页 |
| 4.3 Findings and Analysis of the Teachers’ Interview | 第61-70页 |
| 4.3.1 Factors Influencing Teachers’ Code-switching | 第61-65页 |
| 4.3.2 Functions of Code-switching | 第65-70页 |
| 4.3.2.1 Code-switching for Teaching | 第65-68页 |
| 4.3.2.2 Code-switching for Managing | 第68-69页 |
| 4.3.2.3 Code-switching for Interacting | 第69-70页 |
| 4.4 The Effect of Code-switching in Rural Areas | 第70-72页 |
| Chapter Five Conclusion | 第72-76页 |
| 5.1 Summary of the Major Findings | 第72-73页 |
| 5.2 Implications | 第73-74页 |
| 5.3 Limitations | 第74-75页 |
| 5.4 Suggestions for Further Research | 第75-76页 |
| Bibliography | 第76-80页 |
| Appendices | 第80-92页 |
| Acknowledgements | 第92页 |
