| Acknowledgements | 第1-6页 |
| Abstract | 第6-8页 |
| 摘要 | 第8-11页 |
| Chapter One Introduction | 第11-16页 |
| ·A Need of Innovation in Oral English Teaching in China | 第11页 |
| ·The background of the study | 第11-13页 |
| ·Significance of the study | 第13-14页 |
| ·Focus of the Study | 第14页 |
| ·The structure of the thesis | 第14-16页 |
| Chapter Two Present Problems of Oral BE Teaching in China | 第16-21页 |
| ·Features of Oral BE and BEMS in China | 第16-18页 |
| ·Traditional Classroom Teaching Methods of Oral BE in China | 第18-19页 |
| ·Drawbacks of Oral BE teaching in China | 第19-21页 |
| Chapter Three Literature Review | 第21-35页 |
| ·Theoretical Framework on Learner-centered Education Theory System | 第21-23页 |
| ·Constructive Psychology | 第21页 |
| ·Humanistic Psychology | 第21-23页 |
| ·Individuals' Control and Behavior | 第21-22页 |
| ·Learner's Affective Domain | 第22-23页 |
| ·Krashen's Input Hypothesis and Affective Filter Hypothesis | 第23-25页 |
| ·Learner-centered Teaching Methodologies | 第25-27页 |
| ·Learner-centered Approaches(LCA) | 第25-27页 |
| ·The Perspectives of the LCA | 第26-27页 |
| ·The Objective of the LCA | 第27页 |
| ·Communicative Language Teaching | 第27-35页 |
| ·Activity-based Approach | 第28-31页 |
| ·An Overview of the Activity-based Approach | 第28-29页 |
| ·Rationale of the Activity-based Approach | 第29-31页 |
| ·Group Work | 第31-35页 |
| ·An Overview of Group Work | 第31页 |
| ·Types of Group Work | 第31-33页 |
| ·Characteristics of GW in Learner-centered Classroom | 第33-35页 |
| Chapter Four Research Methodology | 第35-41页 |
| ·Purpose | 第35页 |
| ·Experimental Design | 第35-36页 |
| ·Research Hypothesis | 第35-36页 |
| ·Description of Experimental Classes | 第36-38页 |
| ·Participants | 第36页 |
| ·Textbook | 第36-37页 |
| ·Classroom Operations | 第37-38页 |
| ·Instrument | 第38-41页 |
| ·SPSS 11.0 for Data analysis | 第38-39页 |
| ·Quantitative Data collection | 第39-40页 |
| ·Pre-test | 第39页 |
| ·Post-tests | 第39页 |
| ·Scoring system | 第39-40页 |
| ·Qualitative data collection | 第40-41页 |
| Chapter Five Data Collection and Analysis | 第41-47页 |
| ·Data collection | 第41-42页 |
| ·Pre-test | 第41页 |
| ·Post-test | 第41-42页 |
| ·Scoring correlation coefficients | 第42页 |
| ·Data Analyses | 第42-45页 |
| ·Comparisons between Class A and Class B in the pre-test | 第42-43页 |
| ·Correlation between the post-tests and the pre-test in Class A and Class B | 第43页 |
| ·Comparison between the post-tests and pre-test in Class B | 第43页 |
| ·Comparison between the post-tests and the pre-test in Class A | 第43-44页 |
| ·Comparison between Class A and Class B in the post-tests | 第44页 |
| ·Different effects of GW on the high and low achievers' oral English | 第44-45页 |
| ·Comparison of the high achievers in the post-tests with the pre-test | 第44-45页 |
| ·Comparison of the low achievers in the post-tests with the pre-test | 第45页 |
| ·Questionnaires and interviews analysis | 第45-47页 |
| Chapter Six Findings and Contributions | 第47-55页 |
| ·GW is effective in motivating learners to participate in activities | 第47页 |
| ·Different GW affects different students' oral achievement and their inclination to types of GW | 第47-48页 |
| ·Factors for the effects of GW on oral Business English | 第48-49页 |
| ·Factors for the different effects of GW on oral achievement of the high and low achievers | 第49-50页 |
| ·Attitudes toward GW | 第50-53页 |
| ·Advantages of GW | 第51-52页 |
| ·Disadvantages of GW | 第52-53页 |
| ·Opinions about the effects of GW | 第53-55页 |
| ·Academic effects of GW | 第53页 |
| ·Other effects of GW | 第53-55页 |
| Chapter Seven Conclusion | 第55-58页 |
| ·Summary | 第55页 |
| ·Limitation of the present study | 第55页 |
| ·Implications for GW in oral BE learning and teaching | 第55-56页 |
| ·Suggestions for further studies | 第56-58页 |
| Bibliography | 第58-60页 |
| Appendix Ⅰ | 第60-62页 |
| Appendix Ⅱ | 第62-66页 |
| Appendix Ⅲ | 第66页 |
