声明
Acknowledgements
Abstract
摘要
Table of Contents
List of Tables
List of Abbreviations
Chapter One Introduction
1.1 Background of the study
1.2 Objectives of the study
1.3 Significance of the study
1.4 Layout of the thesis
Chapter Two Literature Review
2.1 Key terms
2.1.1 Code-switching
2.1.2 Categories of code-switching
2.2 Theoreticai Foundations
2.2.1 Input hypothesis
2.2.2 Discourse analysis
2.3 Previous studies abroad and at home
2.3.1 Empirical studies abroad
2.3.2 Empirical studies at home
2.3.3 Evaluation of previous studies
Chapter Three Methodology
3.1 Research questions
3.2 Research Design
3.2.1 Participants
3.2.2 Instruments
3.2.3 Treatment
3.2.4 Data collection and data analysis
Chapter Four Results and Discussion
4.1 Differences about types of English teachers’ code-switching in middle school classroom between eastern region and western region
4.1.1 Types of English teachers’ code-switching in East China’s middle school classroom
4.1.2 Types of English teachers’ code-switching in West China’s middle school classroom
4.1.3 Differences about types of English teachers’ code-switching in middle school classroom between eastern region and western region
4.2 Differences about factors influencing English teachers’ code-switching in middle school classroom between eastern region and western region
4.2.1 Factors influencing English teachers’ code-switching in East China’s middle school classroom
4.2.2 Factors influencing English teachers’ code-switching in West China’s middle school classroom
4.2.3 Differences about factors influencing English teachers’ code-switching in middle school classroom between eastern region and western region
Chapter Five Conclusion
5.1 Major findings
5.2 Implications
5.3 Limitations and suggestions for future studies
References
Appendixes