| 摘要 | 第1-6页 |
| ABSTRACT | 第6-9页 |
| CHAPTER Ⅰ Introduction | 第9-12页 |
| ·The need for the study | 第9-10页 |
| ·An outline of the thesis | 第10-12页 |
| CHAPTER Ⅱ Literature Review | 第12-34页 |
| ·Previous researches on traditional teacher-centered teaching model | 第12-17页 |
| ·Characteristics of teacher-centered model of teaching | 第13-14页 |
| ·Limitations of teacher-centered teaching model | 第14-17页 |
| ·Multimedia CALL in vocational college English teaching | 第17-26页 |
| ·Development of CALL | 第17-19页 |
| ·Emergence of multimedia CALL | 第19-20页 |
| ·Advantages of multimedia CALL | 第20-22页 |
| ·Disadvantages of multimedia CALL | 第22-23页 |
| ·Necessity of using multimedia CALL in vocational college English teaching | 第23-26页 |
| ·Theoretical framework:constructivism theory | 第26-34页 |
| ·Definitions | 第26-27页 |
| ·Principles of constructivist learning | 第27-28页 |
| ·Significance of constructivism in English teaching | 第28-30页 |
| ·Application of constructivism in multimedia CALL | 第30-31页 |
| ·Teacher's roles in multimedia CALL under guidance of constructivism | 第31-34页 |
| CHAPTER Ⅲ Methodology | 第34-38页 |
| ·Methodology of the study | 第34-36页 |
| ·Introduction | 第34-35页 |
| ·Hypothesis | 第35页 |
| ·Subjects | 第35页 |
| ·Instrument | 第35-36页 |
| ·Data collection and analysis | 第36-38页 |
| CHAPTER Ⅳ Results and Discussion | 第38-55页 |
| ·Results and discussion of questionnaire study | 第38-42页 |
| ·The percentages of teacher's opinions about reorientation of teacher's roles under multimedia CALL environment | 第38-41页 |
| ·The percentages of three groups in different teacher's roles | 第41-42页 |
| ·Results and discussion of interview study | 第42-44页 |
| ·Further discussion of reorientation of teacher's roles in multimedia CALL English teaching | 第44-55页 |
| ·A planner role | 第44-45页 |
| ·A supervisor role | 第45-47页 |
| ·An organizer role | 第47-49页 |
| ·A promoter role | 第49-50页 |
| ·A participant role | 第50-51页 |
| ·An assessor role | 第51-52页 |
| ·A source role | 第52-54页 |
| ·Summary | 第54-55页 |
| CHAPTER Ⅴ Conclusions | 第55-58页 |
| ·Major findings | 第55-56页 |
| ·Implications | 第56-57页 |
| ·Limitations of the study | 第57页 |
| ·Suggestions for further research | 第57-58页 |
| Bibliography | 第58-60页 |
| Appendix A | 第60-61页 |
| Appendix B | 第61-65页 |
| Appendix C | 第65-69页 |
| Acknowledgements | 第69-70页 |
