| Acknowledgements | 第4-5页 |
| Abstract | 第5-6页 |
| 摘要 | 第7-13页 |
| Chapter Ⅰ Introduction | 第13-19页 |
| 1.1 Background of the Research | 第13-14页 |
| 1.2 Significance of the Research | 第14-16页 |
| 1.3 Overall Structure of the Thesis | 第16-19页 |
| Chapter Ⅱ Literature Review | 第19-35页 |
| 2.1 Graded Homework | 第19-22页 |
| 2.1.1 Definition of graded teaching | 第19-21页 |
| 2.1.2 Definition of graded homework | 第21-22页 |
| 2.1.3 Relationships between graded homework and college English gradedteaching | 第22页 |
| 2.2 English Homework Assessment | 第22-25页 |
| 2.2.1 Types of homework assessment | 第23-24页 |
| 2.2.2 Principle of homework assessment | 第24页 |
| 2.2.3 Washback effect of homework assessment | 第24-25页 |
| 2.3 Review of Previous Studies on Homework | 第25-29页 |
| 2.3.1 Previous studies on homework abroad | 第25-27页 |
| 2.3.2 Studies on homework at home | 第27-29页 |
| 2.3.3 Comment | 第29页 |
| 2.4 Related Theories | 第29-35页 |
| 2.4.1 Theory of Self-efficacy | 第29-31页 |
| 2.4.2 The Affective Filter Hypothesis | 第31-32页 |
| 2.4.3 Theory of Zone of Proximal Development | 第32-35页 |
| Chapter Ⅲ Research Design | 第35-47页 |
| 3.1 Research Questions | 第35页 |
| 3.2 Research Subjects | 第35-36页 |
| 3.3 Research Instruments | 第36-39页 |
| 3.3.1 Questionnaire | 第36-38页 |
| 3.3.2 In-depth interview | 第38页 |
| 3.3.3 Experiment | 第38-39页 |
| 3.4 Research Procedure | 第39-47页 |
| 3.4.1 The stages of research | 第39-41页 |
| 3.4.2 One sample of graded homework assignment and assessment | 第41-47页 |
| Chapter Ⅳ Results and Analysis | 第47-67页 |
| 4.1 Analysis on Questionnaire | 第48-58页 |
| 4.2 Results from In-depth Interview | 第58-61页 |
| 4.3 Results from Pretest and Post test | 第61-67页 |
| Chapter Ⅴ Discussions | 第67-79页 |
| 5.1 Effectiveness and Limitations of Postposed Graded Homework | 第67-71页 |
| 5.2 Assessment on Postposed Graded Homework and Its Washback Effect | 第71-74页 |
| 5.3 Discussion on Ways to Improve Graded Homework and Its Assessment | 第74-79页 |
| 5.3.1 Cornerstone——college English graded teaching | 第74-75页 |
| 5.3.2 Pillar——professional features | 第75-77页 |
| 5.3.3 Roof——incentive mechanism | 第77-79页 |
| Chapter Ⅵ Conclusion | 第79-87页 |
| 6.1 Main Findings | 第79-81页 |
| 6.2 Pedagogical Implications | 第81-84页 |
| 6.3 Limitations and Suggestions for Further Research | 第84-87页 |
| References | 第87-91页 |
| Appendixes | 第91-101页 |
| 攻读硕士学位期间的科研成果 | 第101页 |
