| 摘要 | 第4-5页 |
| Abstract | 第5-6页 |
| Introduction | 第10-12页 |
| Chapter 1 Dynamic System Theory | 第12-21页 |
| 1.1 What is DST | 第12-13页 |
| 1.2 Features of Dynamic System | 第13-16页 |
| 1.2.1 Complex and Nonlinear | 第13-14页 |
| 1.2.2 Chaotic and Unpredictable | 第14页 |
| 1.2.3 Sensitive to Initial Conditions | 第14-15页 |
| 1.2.4 Feedback Sensitive and Variation | 第15-16页 |
| 1.2.5 Attractor State and Repeller State | 第16页 |
| 1.3 DST in Second Language Acquisition | 第16-20页 |
| 1.3.1 Overseas Research of DST in Second Language Acquisition | 第16-18页 |
| 1.3.2 Domestic Research of DST in Second Language Acquisition | 第18页 |
| 1.3.3 Measurement Dimensions in the Study of DST in Second LanguageAcquisition | 第18-20页 |
| 1.4 Summary | 第20-21页 |
| Chapter 2 Study of Lexical Chunk | 第21-25页 |
| 2.1 Definitions of Lexical C hunk | 第21页 |
| 2.2 The Role of Lexical C hunk in Language Acquisition | 第21-22页 |
| 2.3 The Application of Lexical Chunk in Writing Language | 第22-24页 |
| 2.4 Summary | 第24-25页 |
| Chapter 3 Methodology | 第25-31页 |
| 3.1 Research Questions | 第25页 |
| 3.2 The Participants | 第25-26页 |
| 3.3 Research Procedures | 第26-27页 |
| 3.4 Data Collection | 第27-31页 |
| 3.4.1 The Plan of the Extraction | 第27-28页 |
| 3.4.2 The Complexity, Fluency and Accuracy of the Composition | 第28-29页 |
| 3.4.3 The Density of Lexical Chunk of the Composition | 第29-31页 |
| Chapter 4 Results and Discussion | 第31-53页 |
| 4.1 The Relationship between Lexical C hunk and CAF of Participant Y | 第31-38页 |
| 4.1.1 The Relationship between Lexical Chunk Density and LexicalComplexity | 第31-33页 |
| 4.1.2 The Relationship between Lexical Chunk Density and GrammaticalComplexity | 第33-35页 |
| 4.1.3 The Relationship between Lexical C hunk Density and Accuracy | 第35-37页 |
| 4.1.4 The Relationship between Lexical C hunk Density and Fluency | 第37-38页 |
| 4.2 The Relationship between CAF and Lexical C hunk of Participant L, W, and Z | 第38-47页 |
| 4.2.1 The Relationship between Lexical Chunk Density and LexicalComplexity | 第38-41页 |
| 4.2.2 The Relationship between Lexical Chunk Density and GrammaticalComplexity | 第41-43页 |
| 4.2.3 The Relationship between Lexical C hunk Density and Accuracy | 第43-45页 |
| 4.2.4 The Relationship between Lexical C hunk Density and Fluency | 第45-47页 |
| 4.3 The Regulating Influence of Lexical Chunk Density on the Interrelations of C AF .. 38 | 第47-50页 |
| 4.3.1 The Regulating Influence of Lexical Chunk Density on the Relationshipof Complexity and Fluency | 第47-48页 |
| 4.3.2 The Regulating Influence of Lexical Chunk Density on the Relationshipof Complexity and Accuracy | 第48-49页 |
| 4.3.3 The Regulating Influence of Lexical Chunk Density on the Relationshipof Fluency and Accuracy | 第49-50页 |
| 4.4 Summary | 第50-53页 |
| Chapter 5 Pedagogical Implications | 第53-55页 |
| 5.1 Emphasizing Different Types of Lexical Chunk to Enhance the Complexity ofWriting | 第53页 |
| 5.2 Employing Lexical C hunk to Enhance the Accuracy of Writing | 第53-54页 |
| 5.3 Taking in Lexical C hunk to Enhance the Fluency of Writing | 第54-55页 |
| Conclusion | 第55-57页 |
| References | 第57-62页 |
| 发表论文和参加科研情况说明 | 第62-63页 |
| Acknowledgements | 第63-64页 |
