| Abstract | 第1-9页 |
| 摘要 | 第9-12页 |
| Chapter 1 Introduction | 第12-17页 |
| ·Background of the Study | 第12-13页 |
| ·Objective of the Study | 第13-14页 |
| ·Significance of the Study | 第14-15页 |
| ·Research Questions | 第15页 |
| ·Outline of the Thesis | 第15-17页 |
| Chapter 2 Literature Review | 第17-27页 |
| ·Concept, Model and the Role of Negotiation of Meaning | 第17-22页 |
| ·Concept of Negotiation of Meaning | 第17-18页 |
| ·Model of Negotiation of Meaning | 第18-19页 |
| ·The Role of Negotiation of Meaning in Second Language Acquisition | 第19-22页 |
| ·Research of the Effect of Interactional Environment on the Amount of Negotiation of Meaning | 第22-27页 |
| ·Introduction | 第22-23页 |
| ·Researches Abroad | 第23-24页 |
| ·Researches at Home | 第24-27页 |
| Chapter 3 Theoretical Framework | 第27-39页 |
| ·Input, Output, and Interaction | 第27-31页 |
| ·The Input Hypothesis | 第27-28页 |
| ·The Output Hypothesis | 第28-29页 |
| ·The Interaction Hypothesis | 第29-31页 |
| ·Information Processing | 第31-33页 |
| ·Tasks in Second Language Acquisition | 第33-39页 |
| ·Definition of Tasks | 第33-34页 |
| ·Task Types | 第34-36页 |
| ·The Cognitive Difficulty of Tasks | 第36-37页 |
| ·The Role of Tasks in Second Language Acquisition | 第37-39页 |
| Chapter 4 Methodology | 第39-46页 |
| ·Research Questions | 第39页 |
| ·Subjects | 第39-40页 |
| ·Instruments | 第40页 |
| ·Procedure of the Study | 第40-46页 |
| ·Designing Tasks of Different Types | 第40-41页 |
| ·Audio-recording | 第41-42页 |
| ·Transcribing and Segmenting | 第42-43页 |
| ·Coding | 第43-46页 |
| Chapter 5 Data Analysis and Results | 第46-56页 |
| ·Results for the Frequency of Negotiation of Meaning and Modified Output | 第46-48页 |
| ·Results for the Frequency of Negotiation of Meaning | 第46-47页 |
| ·Results for the Frequency of Modified Output | 第47-48页 |
| ·Results for the Effect of Task Types on the Amount of Negotiation of Meaning | 第48-52页 |
| ·Results for the Effect of Task Types on Total Amount of Negotiation of Meaning | 第48-49页 |
| ·Results for the Effect of Task Types on the Amount of Negotiation of Meaning by Types | 第49-52页 |
| ·Results for the Correlation of Task Difficulty with the Quantity of Negotiation of Meaning | 第52-56页 |
| ·Results for the Perception of Task Difficulty | 第52页 |
| ·Results for the Correlation of Task Difficulty with the Quantity of Negotiation of Meaning | 第52-56页 |
| Chapter 6 Discussion and Conclusion | 第56-63页 |
| ·Discussion of the Results | 第56-59页 |
| ·Discussion of the Results for the Frequency of Negotiation of Meaning and Modified Output | 第56-57页 |
| ·Discussion of the Resuls for the Effect of Task Types on the Amount of Negotiation of Meaning | 第57-58页 |
| ·Discussion of the Results for the Correlation of Task Difficulty with the Quantity of Negotiation of Meaning | 第58-59页 |
| ·Major Findings of the Study | 第59-60页 |
| ·Implications of the Study | 第60-61页 |
| ·Limitations of the Study | 第61-63页 |
| References | 第63-67页 |
| AppendixⅠ | 第67-69页 |
| AppendixⅡ | 第69-71页 |
| Appendix Ⅲ | 第71-72页 |
| Appendix Ⅳ | 第72-74页 |
| Acknowledgements | 第74页 |
