| Acknowledgements | 第4-5页 |
| 摘要 | 第5-6页 |
| Abstract | 第6-7页 |
| List of Abbreviations | 第11-12页 |
| Chapter 1 Introduction | 第12-15页 |
| 1.1 Research Background | 第12-13页 |
| 1.2 Research Purpose and Significance | 第13-14页 |
| 1.3 Overall Organization of the Thesis | 第14-15页 |
| Chapter 2 Literature Review | 第15-34页 |
| 2.1 The Definition of DA | 第15-16页 |
| 2.2 The Approaches of DA | 第16-20页 |
| 2.2.1 Interventionist DA (standardized mediation) | 第17-18页 |
| 2.2.2 Interactionist DA (non-standardized mediation) | 第18-20页 |
| 2.3 The Theoretical Foundation of DA | 第20-24页 |
| 2.3.1 Sociocultural Theory (SCT) and Zone of Proximal Development (ZPD) | 第20-21页 |
| 2.3.2 Mediation as Scaffolding | 第21-22页 |
| 2.3.3 Internalization and Transcendence | 第22-23页 |
| 2.3.4 Reciprocity | 第23-24页 |
| 2.4 Group Dynamic Assessment(G-DA) | 第24-25页 |
| 2.5 The Empirical Studies on DA and G-DA | 第25-34页 |
| 2.5.1 Empirical Studies in the West | 第25-31页 |
| 2.5.2 Empirical Studies in China | 第31-34页 |
| Chapter 3 Research Methodology | 第34-44页 |
| 3.1 Research Questions | 第34页 |
| 3.2 Research Design | 第34-36页 |
| 3.3 Participants | 第36-37页 |
| 3.4 Instruments | 第37-40页 |
| 3.5 Data Collection Procedure | 第40-41页 |
| 3.6 Data Analysis | 第41-44页 |
| Chapter 4 Results and Discussion | 第44-71页 |
| 4.1 Participants' Overall Target Grammar Performance | 第44-53页 |
| 4.1.1 The Effect of G-DA on Promoting Participants' Grammar Development | 第44-46页 |
| 4.1.2 The Effect of G-DA on Diagnosing Participants' Grammar Development Level | 第46-48页 |
| 4.1.3 Participants' Obstacles on Learning Target Grammar Points | 第48-53页 |
| 4.2 Participants' Performance on Present Perfect Tense | 第53-58页 |
| 4.2.1 G-DA Promoting Zhang and Zhao's Performance on Present Perfect Tense | 第53-54页 |
| 4.2.2 G-DA Diagnosing Zhang and Zhao's Developmental Differences | 第54-58页 |
| 4.3 Sang and Cheng's Performance on Object Clause | 第58-63页 |
| 4.3.1 G-DA Promoting Sang and Cheng's Performance on Object Clause | 第58-61页 |
| 4.3.2 G-DA Diagnosing Sang and Cheng's Developmental Differences | 第61-63页 |
| 4.4 Yin and Qin's Performance on Relative Clause | 第63-71页 |
| 4.4.1 G-DA Promoting Yin and Qin's Performance on Relative Clause | 第63-66页 |
| 4.4.2 G-DA Diagnosing Yin and Qin's Developmental Differences | 第66-71页 |
| Chapter 5 Conclusion | 第71-75页 |
| 5.1 Major Findings | 第71-73页 |
| 5.2 Implications | 第73页 |
| 5.3 Limitations and Suggestions | 第73-75页 |
| References | 第75-80页 |
| Appendix | 第80-93页 |
