| 摘要 | 第5-7页 |
| Abstract | 第7-9页 |
| Contents | 第10-14页 |
| List of Tables and Figures | 第14-16页 |
| Abbreviations | 第16-17页 |
| Introduction | 第17-21页 |
| Background | 第17-19页 |
| Purposes and Significance | 第19-21页 |
| Chapter 1 Literature Review | 第21-56页 |
| 1.1 Previous Studies on Recasts | 第21-40页 |
| 1.1.1 Definitions,Types and Nature of Recasts | 第21-29页 |
| 1.1.2 Theoretical Foundations for Studying Recasts | 第29-32页 |
| 1.1.3 The Effectiveness of Recasts | 第32-40页 |
| 1.2 Previous Studies on Learner Uptake | 第40-50页 |
| 1.2.1 The Definition and Categorizations of Learner Uptake | 第40-43页 |
| 1.2.2 Roles of Learner Uptake | 第43-45页 |
| 1.2.3 Learner Uptake Elicited by Recasts | 第45-50页 |
| 1.3 Previous Studies on Learners' Perceptions of Recasts | 第50-56页 |
| 1.3.1 Learners' Perceptions | 第50-51页 |
| 1.3.2 Learners' Perceptions of Recasts | 第51-56页 |
| Chapter 2 Methodology | 第56-76页 |
| 2.1 Research Questions | 第56-57页 |
| 2.2 Participants | 第57-58页 |
| 2.3 Target Linguistic Items | 第58-59页 |
| 2.4 Materials | 第59-61页 |
| 2.4.1 Treatment Tasks | 第59-60页 |
| 2.4.2 The Test Paper | 第60-61页 |
| 2.5 Procedures | 第61-67页 |
| 2.6 Data Coding | 第67-75页 |
| 2.6.1 Coding of Recast Episodes | 第67-69页 |
| 2.6.2 Coding of Learner Uptake | 第69页 |
| 2.6.3 Coding of Learners' Perceptions of Recasts | 第69-74页 |
| 2.6.4 Interrater Reliability | 第74-75页 |
| 2.7 Data Analysis | 第75-76页 |
| Chapter 3 Results | 第76-99页 |
| 3.1 The Impact of Recast Type on the Effectiveness of Recasts | 第76-88页 |
| 3.1.1 The Effectiveness of SRs on Learning Target Linguistic Items | 第77-81页 |
| 3.1.2 The Effectiveness of IRs on Learning Target Linguistic Items | 第81-83页 |
| 3.1.3 Differences of the Effectiveness between SRs and IRs | 第83-88页 |
| 3.2 The Impact of Recast Type on Learner Uptake following Recasts | 第88-92页 |
| 3.2.1 Learner Uptake Elicited by SRs and IRs | 第88-89页 |
| 3.2.2 Differences of Learner Uptake between SRs and IRs | 第89-92页 |
| 3.3 The Impact of Recast Type on Learners' Perceptions of Recasts | 第92-99页 |
| 3.3.1 Learners' Perceptions of SRs and IRs | 第93-94页 |
| 3.3.2 Differences of Learners' Perceptions between SRs and IRs | 第94-99页 |
| Chapter 4 Findings and Discussion | 第99-112页 |
| 4.1 The Impact of Recast Type on the Effectiveness of Recasts | 第99-104页 |
| 4.1.1 The Effectiveness of Recasts | 第100-102页 |
| 4.1.2 Difference of Effectiveness between SRs and IRs | 第102-104页 |
| 4.2 The Impact of Recast Type on Learner Uptake following Recasts | 第104-108页 |
| 4.2.1 Learner Uptake Elicited by Recasts | 第104-105页 |
| 4.2.2 No Difference of Learner Uptake between SRs and IRs | 第105-108页 |
| 4.3 The Impact of Recast Type on Learners' Perceptions of Recasts | 第108-112页 |
| 4.3.1 Learners' Perceptions of Recasts | 第108-109页 |
| 4.3.2 Differences of Learners' Perception between SRs and IRs | 第109-112页 |
| Conclusion | 第112-117页 |
| Implications | 第113-115页 |
| Limitations and Suggestions | 第115-117页 |
| Bibliography | 第117-126页 |
| Appendices | 第126-130页 |
| Appendix Ⅰ | 第126-128页 |
| Appendix Ⅱ | 第128-130页 |
| Acknowledgement | 第130-131页 |
| 攻读硕士学位期间主要研究成果 | 第131-132页 |
| 详细摘要 | 第132-140页 |
