| 摘要 | 第4-6页 |
| Abstract | 第6-7页 |
| Abbreviations | 第10-11页 |
| Chapter One Introduction | 第11-15页 |
| 1.1 Background of the study | 第11-13页 |
| 1.2 Significance of the study | 第13-14页 |
| 1.3 Organization of the thesis | 第14-15页 |
| Chapter Two Literature Review | 第15-35页 |
| 2.1 Key concepts | 第15-24页 |
| 2.1.1 Task | 第15-19页 |
| 2.1.2 Pattern of proficiency pairing | 第19-20页 |
| 2.1.3 Negotiation of meaning | 第20-23页 |
| 2.1.4 Oral performance | 第23-24页 |
| 2.2 Theoretical framework | 第24-30页 |
| 2.2.1 Interaction Hypothesis | 第24-26页 |
| 2.2.2 Limited capacity model | 第26-27页 |
| 2.2.3 Socicultural theory | 第27-29页 |
| 2.2.4 Collaborative dialogue | 第29-30页 |
| 2.3 Selected review of related studies | 第30-35页 |
| 2.3.1 Studies on effects of task type on negotiation of meaning and oral performance | 第30-32页 |
| 2.3.2 Studies on effects of proficiency pairing on negotiation of meaning and oral performance | 第32-34页 |
| 2.3.3 Studies on oral performance informed by the limited capacity model | 第34-35页 |
| Chapter Three Research Methodology | 第35-45页 |
| 3.1 Research questions | 第35-36页 |
| 3.2 Subjects | 第36-37页 |
| 3.3 Task materials and task design | 第37-38页 |
| 3.4 The Setting | 第38页 |
| 3.5 Research procedure and data collection | 第38-40页 |
| 3.6 Data analysis | 第40-45页 |
| 3.6.1 Identifying and categorizing negotiation of meaning | 第40-42页 |
| 3.6.2 Measuring oral performance | 第42-43页 |
| 3.6.3 Statistic analysis | 第43-44页 |
| 3.6.4 Qualitative analysis | 第44-45页 |
| Chapter Four Results and Discussion | 第45-79页 |
| 4.1 The effects of task type and pairing pattern on negotiation of meaning | 第45-57页 |
| 4.1.1 The effect of task type on negotiation of meaning | 第45-47页 |
| 4.1.2 The effect of pairing pattern on negotiation of meaning | 第47-48页 |
| 4.1.3 The interaction effect of task type and pairing patterm on negotiation of meaning | 第48-51页 |
| 4.1.4 Discussion | 第51-57页 |
| 4.2 Effects of task type and pairing pattern on oral performance | 第57-65页 |
| 4.2.1 The effect of task type on oral performance | 第57-58页 |
| 4.2.2 The effect of pairing pattern on oral performance | 第58-59页 |
| 4.2.3 Interaction effects of task type and pairing pattern on learner performance | 第59-61页 |
| 4.2.4 Discussion | 第61-65页 |
| 4.3 More findings from qualitative analysis | 第65-79页 |
| 4.3.1 The effects of task type and pairing pattern on negotiation of meaning | 第66-73页 |
| 4.3.2 The effects of task type and pairing pattern on oral performance | 第73-79页 |
| Chapter Five Conclusion | 第79-83页 |
| 5.1 Summary of major findings | 第79-80页 |
| 5.2 Pedagogical implications | 第80-81页 |
| 5.3 Limitations of the present study | 第81-83页 |
| References | 第83-89页 |
| Appendix Ⅰ | 第89-90页 |
| Appendix Ⅱ | 第90-94页 |
| Acknowledgements | 第94页 |
