| ACKNOWLEDGEMENTS | 第5-6页 |
| ABSTRACT | 第6-7页 |
| 摘要 | 第8-14页 |
| CHAPTER ONE INTRODUCTION | 第14-18页 |
| 1.1 Research orientation | 第14页 |
| 1.2 Research background and significance | 第14-16页 |
| 1.3 Key research questions | 第16-17页 |
| 1.4 Organization of the remaining chapters | 第17-18页 |
| CHAPTER TWO LITERATURE REVIEW AND THEORETICAL BASIS | 第18-30页 |
| 2.1 Overview | 第18页 |
| 2.2 Definition of corrective feedback and learner output | 第18-25页 |
| 2.2.1 Definition of corrective feedback | 第18-20页 |
| 2.2.2 Learner output | 第20-21页 |
| 2.2.3 The role of teacher corrective feedback and learners modified output in SLA | 第21-25页 |
| 2.3 Task, teacher feedback and learner modified output | 第25-29页 |
| 2.3.1 Definitions of a task | 第25-26页 |
| 2.3.2 Studies on Teacher feedback and learner modified output during tasks versus nontasks | 第26-28页 |
| 2.3.3 Comment on the previous studies | 第28-29页 |
| 2.4 Summary | 第29-30页 |
| CHAPTER THREE METHODOLOGY | 第30-39页 |
| 3.1 Overview | 第30页 |
| 3.2 Participants | 第30-31页 |
| 3.3 Data collection | 第31页 |
| 3.4 Data transcription | 第31-32页 |
| 3.5 Data coding | 第32-37页 |
| 3.5.1 Coding for task-related variables | 第32-33页 |
| 3.5.2 Coding for feedback and modified output | 第33-37页 |
| 3.6 Data analysis | 第37页 |
| 3.7 Questionnaire | 第37-38页 |
| 3.8 Summary | 第38-39页 |
| CHAPTER FOURRESULTS OF THE STUDY | 第39-51页 |
| 4.1 Overview | 第39页 |
| 4.2 Results for research question 1 | 第39-44页 |
| 4.3 Results for research question 2 | 第44-50页 |
| 4.3.1 Differences between the two teachers in amount of teacher corrective feedback in tasks versus nontasks | 第44-45页 |
| 4.3.2 Differences between the two teachers in the type of teacher corrective feedback in tasks versus nontasks | 第45-48页 |
| 4.3.3 Differences of student opportunity for and actual learner modified output during tasks versus nontasks in the two classrooms | 第48-49页 |
| 4.3.4 Summary of the results of research question 2 | 第49-50页 |
| 4.4 Summary | 第50-51页 |
| CHAPTER FIVEDISCUSSION | 第51-65页 |
| 5.1 Overview | 第51页 |
| 5.2 Discussion for results of research question 1 | 第51-55页 |
| 5.3 Discussion for results of research question 2 | 第55-63页 |
| 5.3.1 Differences between the two teachers in amount of teacher corrective feedback during tasks versus nontasks | 第55-56页 |
| 5.3.2 Differences between the two teachers in the type of teacher corrective feedback during tasks versus nontasks | 第56-62页 |
| 5.3.3 Differences between the two teachers in student opportunity for and incidence of learner modified output during tasks versus nontasks | 第62-63页 |
| 5.4 Summary | 第63-65页 |
| CHAPTER SIX CONCLUSION | 第65-69页 |
| 6.1 Summary of major findings | 第65-66页 |
| 6.2 Implications | 第66页 |
| 6.3 Limitations and recommendations for future research | 第66-69页 |
| 6.3.1 Limitations | 第66-67页 |
| 6.3.2 Recommendations for future research | 第67-69页 |
| REFERENCES | 第69-78页 |
| APPENDICES | 第78-79页 |
