| 摘要 | 第1-7页 |
| ABSTRACT | 第7-10页 |
| List of Abbreviations | 第10-15页 |
| Chapter 1 Introduction | 第15-18页 |
| ·Research Background | 第15-16页 |
| ·Significance of the Study | 第16-17页 |
| ·Structure of this Thesis | 第17-18页 |
| Chapter 2 Literature Review | 第18-35页 |
| ·Review of Code-switching | 第18-22页 |
| ·Definitions of Code-switching | 第18-19页 |
| ·Classification of Code-switching | 第19-21页 |
| ·Functions of Code-switching | 第21-22页 |
| ·Review of Cummins's BICS and CALP | 第22-24页 |
| ·Comprehensible Input Hypothesis | 第24-25页 |
| ·Studies of Code-switching in the Pedagogical Field | 第25-33页 |
| ·Studies of Code-switching in Classroom | 第25-26页 |
| ·Attitude towards Code-switching in Language Classroom | 第26-29页 |
| ·Previous Empirical Studies Aboard | 第29-32页 |
| ·Code-switching Research in China | 第32-33页 |
| ·Summary of Theories | 第33-35页 |
| Chapter 3 Methodology | 第35-40页 |
| ·Subjects | 第35-36页 |
| ·Lesson Type | 第36页 |
| ·Instruments | 第36-38页 |
| ·Classroom Audio-recordings | 第36-37页 |
| ·Classroom Observations | 第37页 |
| ·Questionnaire Survey | 第37-38页 |
| ·Interviews | 第38页 |
| ·Procedure of Data Collection | 第38页 |
| ·Procedure of Data Analysis | 第38-40页 |
| Chapter 4 Results and Findings | 第40-51页 |
| ·Students' English Proficiency | 第40-41页 |
| ·Types of Code-switching in the Data | 第41页 |
| ·The Amount and Frequency of Teacher Code-switching in AE Classroom | 第41-44页 |
| ·Attitudes towards Teacher Code-switching in AE Classroom | 第44-47页 |
| ·Teachers' Report on Functions of Classroom Code-switching | 第47-48页 |
| ·Feedback on Factors Influencing Teachers' Code-switching | 第48-51页 |
| Chapter 5 Analysis and Discussion | 第51-65页 |
| ·Types of Code-switching in Aviation English Classroom | 第51-55页 |
| ·Intra-sentential Code-switching | 第52-53页 |
| ·Inter-sentential Code-switching | 第53-54页 |
| ·Tag-switching | 第54-55页 |
| ·Functions of Teachers' Code-switching in AE Classroom | 第55-61页 |
| ·Code-switching as Teaching function | 第55-58页 |
| ·Code-switching as Managing Function | 第58-59页 |
| ·Code-switching as Communication and Emotional Functions | 第59-61页 |
| ·Factors that Influence the Classroom Code | 第61-65页 |
| ·Students' and Teachers' English Proficiency | 第61-62页 |
| ·Culture and Language Difference | 第62-63页 |
| ·Teachers' Attitude toward Code-switching | 第63页 |
| ·Cognitive Factors of Teachers and Students | 第63-64页 |
| ·Other Factors | 第64-65页 |
| Chapter 6 Conclusion | 第65-70页 |
| ·Major Findings | 第65-67页 |
| ·Pedagogical Implications | 第67-69页 |
| ·Limitation of the Study and Recommendations for Future Research | 第69-70页 |
| References | 第70-75页 |
| Appendices | 第75-83页 |
| Appendix Ⅰ Questionnaire for Students | 第75-77页 |
| Appendix Ⅱ Questionnaire for Teachers | 第77-79页 |
| Appendix Ⅲ Outline of Teachers' Interview | 第79-80页 |
| Appendix Ⅳ Sample Transcription | 第80-83页 |
| Acknowledgments | 第83-84页 |
| Resume | 第84页 |
