| 摘要 | 第4-6页 |
| Abstract | 第6-7页 |
| Chapter One Introduction | 第12-16页 |
| 1.1 Research Background | 第12-14页 |
| 1.2 Research Significance | 第14页 |
| 1.3 Structure of the Thesis | 第14-16页 |
| Chapter Two Literature Review | 第16-44页 |
| 2.1 Key Concepts | 第16-27页 |
| 2.1.1 Task in L2 Study | 第16-18页 |
| 2.1.2 Task Type | 第18-21页 |
| 2.1.3 Learner-learner Interaction | 第21-23页 |
| 2.1.4 Negotiated Interaction | 第23-27页 |
| 2.2 Theoretical Framework | 第27-37页 |
| 2.2.1 Interaction Hypothesis | 第28-29页 |
| 2.2.2 Conversation Analysis | 第29-33页 |
| 2.2.3 Sociocultural Theory | 第33-37页 |
| 2.3 Review of Previous Studies | 第37-44页 |
| 2.3.1 Previous Studies on Effect of Task Type on Language Performance | 第38-40页 |
| 2.3.2 Previous Studies on Effect of Task Type on Interaction | 第40-44页 |
| Chapter Three Research Design and Procedure | 第44-51页 |
| 3.1 Research Questions | 第44页 |
| 3.2 Participants | 第44页 |
| 3.3 Selection of Task Types and Materials | 第44-46页 |
| 3.4 Procedures | 第46-48页 |
| 3.5 Data Treatment and Analysis | 第48-51页 |
| Chapter Four Results and Analysis | 第51-77页 |
| 4.1 Quantity of Learner Dyadic Talks in Different Task Types | 第51-52页 |
| 4.2 The Effect of Task Type on Features of Negotiated Interaction | 第52-60页 |
| 4.2.1 Differences of the Number of Turn-taking across Three Task Types | 第52-54页 |
| 4.2.2 Differences of Negotiation Types across Three Task Types | 第54-56页 |
| 4.2.3 Differences of Negotiation Strategies Used across Three Task Types | 第56-60页 |
| 4.3 Conversation Analysis on Learner Dyadic Talk in Three Task Types | 第60-77页 |
| 4.3.1 Analysis of the Negotiation Features of Learner Talk in JS | 第60-66页 |
| 4.3.2 Analysis of the Negotiation Features of Learner Talk in DG | 第66-71页 |
| 4.3.3 Analysis of the Negotiation Features of Learner Talk in DT | 第71-77页 |
| Chapter Five Conclusion | 第77-80页 |
| 5.1 Major Findings | 第77-78页 |
| 5.2 Pedagogical Implications of the Study | 第78-79页 |
| 5.3 Limitations of the Study and Issues for Further Research | 第79-80页 |
| References | 第80-86页 |
| Appendix I Transcription conventions | 第86-87页 |
| Appendix Ⅱ | 第87-88页 |
| Appendix Ⅲ | 第88-89页 |
| Appendix Ⅳ | 第89-90页 |
| Acknowledgements | 第90页 |
