| Acknowledgements | 第4-5页 |
| Abstract | 第5-6页 |
| 摘要 | 第7-12页 |
| Chapterl Introduction | 第12-17页 |
| 1.1 Background of the Study | 第12-14页 |
| 1.2 Purpose and Significance of the Study | 第14-15页 |
| 1.3 Layout of the Paper | 第15-17页 |
| Chapter 2 Literature Review | 第17-31页 |
| 2.1 Theories on "Input Hypothesis" and "Affective Filter Hypothesis" | 第17-19页 |
| 2.1.1 Definition of "Input Hypothesis" | 第17页 |
| 2.1.2 Definition of "The Affective Filter" | 第17-19页 |
| 2.2 Enlightenment of Krashen's Input Hypothesis and Affective Filter Hypothesis to English Teaching | 第19-22页 |
| 2.2.1 The Use of L1 and Comprehensible Input | 第20-21页 |
| 2.2.2 The Use of L1 and the Affective Filter | 第21页 |
| 2.2.3 The Amount of L1 use | 第21-22页 |
| 2.3 Theories on "Teacher's Language Awareness" | 第22-24页 |
| 2.3.1 Definition of "TLA" | 第22-23页 |
| 2.3.2 The relationship between input hypothesis, the affective filter hypothesis and the TLA | 第23-24页 |
| 2.4 Researches on Teachers' Use of MT in FL Classrooms | 第24-31页 |
| 2.4.1 Researches on Teachers' Use of MT in FL Classrooms Abroad | 第24-28页 |
| 2.4.2 Researches on Teachers' Use of MT in FL Classrooms in China | 第28-30页 |
| 2.4.3 Research Gaps | 第30-31页 |
| Chapter 3 Research Methodology | 第31-37页 |
| 3.1 Research questions | 第31页 |
| 3.2 Research Subjects | 第31-32页 |
| 3.3 Research Instruments | 第32-34页 |
| 3.3.1 Classroom Observation and Audio-recording | 第32-33页 |
| 3.3.2 Questionnaire | 第33页 |
| 3.3.3 Interview | 第33-34页 |
| 3.4 Data Collection and Procedures | 第34-37页 |
| Chapter 4 Data Analysis and Discussion | 第37-58页 |
| 4.1 Students' Attitudes Toward Teachers' Use of Chinese in EFL Classrooms | 第37-49页 |
| 4.1.1 Acceptance and Using extent of Chinese in EFL classrooms | 第37-42页 |
| 4.1.2 Functions of Using Chinese in EFL Classrooms | 第42-45页 |
| 4.1.3 Discussion | 第45-48页 |
| 4.1.4 Summary of the Results | 第48-49页 |
| 4.2 Teachers' Actual Chinese Use in EFL Classrooms | 第49-58页 |
| 4.2.1 Amount of L1 Use in Different Classes | 第49-50页 |
| 4.2.2 Functions of L1 Use in Different Classes | 第50-55页 |
| 4.2.3 Discussion | 第55-56页 |
| 4.2.4 Summary of the Results | 第56-58页 |
| Chapter 5 Conclusion | 第58-62页 |
| 5.1 Major Findings of the Present Research | 第58-59页 |
| 5.2 Implications of the Study | 第59-60页 |
| 5.3 Limitations and Suggestions for Further Research | 第60-62页 |
| References | 第62-66页 |
| Appendices | 第66-69页 |
| Appendix Ⅰ:Consent form | 第66-67页 |
| Appendix Ⅱ:Questionnaires | 第67-69页 |
| Appendix Ⅲ:Interview Questions | 第69页 |
