| ABSTRACT | 第4-5页 |
| 摘要 | 第6-8页 |
| ACKNOWLEDGEMENTS | 第8-12页 |
| LIST OF ABBREVIATIONS | 第12-13页 |
| CHAPTER ONE INTRODUCTION | 第13-18页 |
| 1.1 Background of the study | 第13-14页 |
| 1.2 Objectives and significance of the study | 第14-16页 |
| 1.2.1 Objectives of the study | 第14-15页 |
| 1.2.2 Theoretical and practical significance of the study | 第15-16页 |
| 1.3 Overall structure of the study | 第16-18页 |
| CHAPTER TWO LITERATURE REVIEW | 第18-41页 |
| 2.1 Written corrective feedback | 第18-22页 |
| 2.1.1 Definition of written corrective feedback | 第18页 |
| 2.1.2 Ellis’ typology of written corrective feedback | 第18-22页 |
| 2.2 Theoretical foundation | 第22-23页 |
| 2.3 Previous studies on written corrective feedback | 第23-34页 |
| 2.3.1 Studies about the inconsistency on the effectiveness of WCF | 第23-26页 |
| 2.3.2 Studies on the effectiveness of different WCF options | 第26-31页 |
| 2.3.3 Learner difference and related studies on WCF | 第31-34页 |
| 2.4 Target structure | 第34-40页 |
| 2.5 Summary | 第40-41页 |
| CHAPTER THREE RESEARCH METHODOLOGY | 第41-52页 |
| 3.1 Research questions | 第41-42页 |
| 3.2 Research design | 第42-51页 |
| 3.2.1 Research subjects | 第42-43页 |
| 3.2.2 Research instruments | 第43-48页 |
| 3.2.3 Research procedure | 第48-50页 |
| 3.2.4 Data analyses | 第50-51页 |
| 3.3 Summary | 第51-52页 |
| CHAPTER FOUR RESULTS AND DISCUSSION | 第52-68页 |
| 4.1 Effects of direct WCF and direct metalinguistic WCF | 第52-58页 |
| 4.1.1 Descriptive statistics of the assessment task for three groups | 第52-53页 |
| 4.1.2 One-way ANOVA results for three testing sessions separately | 第53-56页 |
| 4.1.3 One-way ANOVA results for three groups separately | 第56-58页 |
| 4.2 Correlations between scores of two posttests and words-in-sentences test fortwo experimental groups | 第58-60页 |
| 4.3 Results of two research questions | 第60-61页 |
| 4.4 Discussion | 第61-68页 |
| 4.4.1 The effectiveness of direct WCF and direct metalinguistic WCF on theacquisition of subject-verb agreement | 第62-66页 |
| 4.4.2 Moderating effects of grammatical sensitivity on the effectiveness of twofeedback types | 第66-68页 |
| CHAPTER FIVE CONCLUSION | 第68-72页 |
| 5.1 Major findings | 第68-69页 |
| 5.2 Research implications | 第69-70页 |
| 5.3 Limitations of the research and suggestions for future studies | 第70-72页 |
| REFERENCES | 第72-79页 |
| APPENDIX A | 第79-81页 |
| APPENDIX B | 第81页 |
