| Acknowledgements | 第1-6页 |
| Abstract | 第6-9页 |
| 摘要 | 第9-11页 |
| List of Tables | 第11-13页 |
| List of Figures | 第13-16页 |
| Chapter 1 Introduction | 第16-22页 |
| ·Background | 第16-19页 |
| ·Objectives of this study | 第19-20页 |
| ·Overview of this study | 第20-22页 |
| Chapter 2 Literature review on the study of teacher's roles | 第22-42页 |
| ·Concepts of teacher's roles | 第22-23页 |
| ·Main factors that influence teacher's roles | 第23-29页 |
| ·Interpersonal factors | 第24-27页 |
| ·Task-related factors | 第27-29页 |
| ·Main approaches to the study of teacher's roles | 第29-42页 |
| ·Pedagogical approaches to teacher's roles | 第29-31页 |
| ·Research on teacher's roles from perspectives of teacher's beliefs | 第31-33页 |
| ·Research on teacher's roles from perspectives of teaching styles | 第33-34页 |
| ·Research on teacher's roles from cultural perspectives | 第34-36页 |
| ·Research on teacher's roles from perspectives of'effective teacher' | 第36-40页 |
| ·Limitations of previous research | 第40-42页 |
| Chapter 3 Theoretical framework for the study of teacher's roles | 第42-59页 |
| ·A holistic view of teaching | 第42-47页 |
| ·Instructional aspect of teaching | 第42-43页 |
| ·Interpersonal aspect of teaching | 第43-45页 |
| ·Moral aspect of teaching | 第45-47页 |
| ·Eight kinds of teacher's roles | 第47-59页 |
| ·Description of eight kinds of teacher's roles | 第48-57页 |
| ·Classification of teacher's roles | 第57-59页 |
| Chapter 4 Hypotheses and construction of a College English teacher role scale | 第59-77页 |
| ·Hypotheses | 第59-63页 |
| ·Construction of a College English teacher role scale | 第63-77页 |
| ·Conceptualization and operationalization | 第63-69页 |
| ·Pilot test | 第69-70页 |
| ·Validating the College English Teacher Role Scale | 第70-77页 |
| Chapter 5 A preliminary investigation of College English teachers' roles | 第77-126页 |
| ·Research design | 第77-82页 |
| ·Instrumentation | 第77-79页 |
| ·Participants | 第79-81页 |
| ·Interview procedure | 第81-82页 |
| ·Research findings | 第82-87页 |
| ·Comparison between students'perceived and expected teacher role behaviors | 第82-84页 |
| ·Comparison between teachers'self-perceived and ideal role behaviors | 第84-86页 |
| ·Comparison between effective and ineffective teacher role behaviors | 第86-87页 |
| ·Discussions | 第87-126页 |
| ·Discrepancies between students'perceived and expected teacher role behaviors | 第87-98页 |
| ·Discrepancies between teachers'self-perceptions and ideals | 第98-110页 |
| ·Discrepancies between effective and ineffective teacher role behaviors | 第110-119页 |
| ·Transforming teaching through improving teacher role behaviors | 第119-126页 |
| Chapter 6 Conclusion | 第126-136页 |
| ·A brief summary of the major findings | 第126-128页 |
| ·Implications of the study | 第128-133页 |
| ·Limitations of the study | 第133-135页 |
| ·Suggestions for further research | 第135-136页 |
| Bibiography | 第136-142页 |
| Appendixes | 第142页 |
| Appendix 1 Students'open-ended questionnaire | 第142页 |
| Appendix 2 Teachers' open-ended questionnaire | 第142页 |
| Appendix 3 Effective teachers'in-depth interview outline | 第142-143页 |
| Appendix 4 大学英语教学相关调查问卷(教师) | 第143-145页 |
| Appendix 5 大学英语教学相关调查问卷(学生) | 第145-147页 |
| Appendix 6 Teachers'and students'semi-structured interview outline | 第147页 |
