| Acknowledgements | 第1-9页 |
| Abstract | 第9-11页 |
| 内容摘要 | 第11-13页 |
| Chapter One Introduction | 第13-16页 |
| ·Research Orientation | 第13-14页 |
| ·Significance of the Research | 第14-16页 |
| Chapter Two Literature Review | 第16-39页 |
| ·McLaughlin's Restructuring Theory | 第17-25页 |
| ·Restructuring in Syntactic Development | 第19-20页 |
| ·Restructuring in Semantic Development | 第20-22页 |
| ·Restructuring in Strategy Shifts | 第22-25页 |
| ·Karmiloff-Smith's Restructuring Theory | 第25-29页 |
| ·The Three Phase Model | 第25-26页 |
| ·Further Development of the Model | 第26-29页 |
| ·Other Authors' Theories Concerning Restructuring | 第29-31页 |
| ·Slobin's Operating Principle Model | 第29-30页 |
| ·MacWhinney's Dialectic Model | 第30-31页 |
| ·Andersen's Operation Principle Model | 第31页 |
| ·Studies Concerning Restructuring in China | 第31-33页 |
| ·Contextually Constrained Mitigation | 第33-37页 |
| ·Mitigation Based on Power | 第34页 |
| ·Mitigation Based on Negative Emotions | 第34-35页 |
| ·Mitigation Based on Controversies | 第35-36页 |
| ·Mitigation Based on Taboo Topics | 第36页 |
| ·Mitigation Based on Social Values | 第36-37页 |
| ·Limitations of Previous Study | 第37-39页 |
| Chapter Three Research Question,Hypothesis,and Method | 第39-48页 |
| ·Research Question | 第39-41页 |
| ·Hypothesis | 第41-42页 |
| ·Method | 第42-46页 |
| ·Subjects | 第42页 |
| ·Instruments | 第42-44页 |
| ·Procedure | 第44-46页 |
| ·Testing | 第44-45页 |
| ·Administering the Questionnaire-based Survey | 第45页 |
| ·Validity-testing | 第45-46页 |
| ·Methods for Data Collection and Analysis | 第46-48页 |
| ·Data Collection Methods | 第46-47页 |
| ·Statistic Analysis Methods | 第47-48页 |
| Chapter Four Results and Discussion | 第48-55页 |
| ·Results | 第48-52页 |
| ·Reliability of Self-designed Test and Questionnaires | 第48-49页 |
| ·One-way ANOVA | 第49-52页 |
| ·Discussion | 第52-55页 |
| ·Main Effects of the Mitigation Development | 第52-54页 |
| ·Interrelationship between Learners' English Mitigation Development and Restructuring Theory | 第54-55页 |
| Chapter Five Conclusion | 第55-59页 |
| ·Findings | 第55-56页 |
| ·Implications | 第56-58页 |
| ·Limitations | 第58-59页 |
| References | 第59-63页 |
| Appendix A Test for Chinese-speaking Learners' Mitigation Development in English Context | 第63-65页 |
| Appendix B Questionnaire of the Students' Attribution Types of Learning Mitigation in English Context | 第65-66页 |
| Appendix C A Validity Evaluation Questionnaire on Learners' English Mitigation Development Test Paper | 第66-68页 |
| Appendix D Subjects' Raw Scores by the Rater for English Mitigation Development | 第68-71页 |
| Appendix E Students' Raw Material of Attribution Types | 第71-74页 |
| Appendix F Experts' Evaluation on the Validity of the Test | 第74页 |
