| Acknowledgements | 第5-6页 |
| Abstract | 第6-7页 |
| 摘要 | 第8-12页 |
| 1. Introduction | 第12-18页 |
| 1.1 Background of the study | 第12-14页 |
| 1.2 Significance and purpose of the study | 第14-17页 |
| 1.2.1 Significance of the study | 第14-16页 |
| 1.2.2 Purpose of the study | 第16-17页 |
| 1.3 Organization of the thesis | 第17-18页 |
| 2. Literature Review | 第18-32页 |
| 2.1 Feedback in writing | 第18-21页 |
| 2.1.1 Definition of feedback | 第18-19页 |
| 2.1.2 Types of feedback | 第19-21页 |
| 2.2 Written corrective feedback (WCF) in writing | 第21-23页 |
| 2.2.1 Definition of WCF in writing | 第21页 |
| 2.2.2 Classification of WCF in writing | 第21-23页 |
| 2.3 Related studies of TWCF in writing | 第23-28页 |
| 2.3.1 Studies on the effects of direct and indirect WCF on accuracy | 第23-26页 |
| 2.3.2 Studies on the effects of direct and indirect WCF on the overall writing quality | 第26页 |
| 2.3.3 Studies on learners' attitudes and preference towards WCF | 第26-28页 |
| 2.4 Theoretical framework | 第28-32页 |
| 2.4.1 Interaction hypothesis theory | 第28-29页 |
| 2.4.2 Noticing hypothesis | 第29-30页 |
| 2.4.3 Comprehensible output hypothesis | 第30-32页 |
| 3. Research Design | 第32-39页 |
| 3.1 Research questions | 第32页 |
| 3.2 Participants | 第32-33页 |
| 3.3 Instruments | 第33-34页 |
| 3.3.1 Experiment | 第33页 |
| 3.3.2 Questionnaire | 第33-34页 |
| 3.4 Procedure of the study | 第34-39页 |
| 4. Results and Discussion | 第39-62页 |
| 4.1 Results and discussion of the effects of DWCF and IWCF on accuracy | 第39-44页 |
| 4.1.1 Comparison between two groups before the writing experiment | 第39-40页 |
| 4.1.2 Comparison between the draft 1 and the draft 6 of each group | 第40-43页 |
| 4.1.3 Comparison between two groups after the writing experiment | 第43-44页 |
| 4.2 Results and discussion of the effects of direct and indirect WCF on the overall writing quality | 第44-48页 |
| 4.2.1 Analysis on the correlation between the amount of errors and holistic scores | 第44-45页 |
| 4.2.2 Comparison between direct group and indirect group before the research | 第45-46页 |
| 4.2.3 Comparison between the 1st draft and the 6th draft of each group | 第46-48页 |
| 4.2.4 Comparison between direct group and indirect group after the writing experiment | 第48页 |
| 4.3 Results and discussion of learners' attitudes and preferences towards WCF | 第48-62页 |
| 4.3.1 Results and discussion on students' attitudes and opinions on English writing and error correction | 第49-52页 |
| 4.3.2 Results and discussion on students' expectations of teacher feedback and preference of DWCF and IWCF | 第52-58页 |
| 4.3.3 Results and discussion on students' reactions to teacher feedback and attitudes toward their improvement | 第58-62页 |
| 5. Conclusion | 第62-66页 |
| 5.1 Major findings of the present study | 第62-63页 |
| 5.2 Implications | 第63-65页 |
| 5.2.1 Theoretical implications | 第63页 |
| 5.2.2 Pedagogical implications | 第63-65页 |
| 5.3 Limitations and suggestions | 第65-66页 |
| Bibliography | 第66-71页 |
| Appendix A | 第71-74页 |
| Appendix B | 第74-76页 |
| Appendix C | 第76页 |
