| Abstract | 第8-9页 |
| 摘要 | 第10-12页 |
| List of Abbreviations | 第12-13页 |
| Chapter One Introduction | 第13-16页 |
| 1.1 Background of the Study | 第13-14页 |
| 1.2 Purpose of the Study | 第14页 |
| 1.3 Significance of the Study | 第14-15页 |
| 1.4 Organization of the Study | 第15-16页 |
| Chapter Two Literature Review | 第16-27页 |
| 2.1 The Research Background of Task Complexity | 第16-17页 |
| 2.2 Previous Studies on English Writing at Home and Abroad | 第17-20页 |
| 2.3 Previous Studies on Effects of Task Complexity on Learners’Written Output at Home and Abroad | 第20-25页 |
| 2.3.1 Studies on Effects of Task Complexity on Learners’ Written Output Abroad | 第20-24页 |
| 2.3.2 Studies on Effects of Task Complexity on Learners’ Written Output at Home | 第24-25页 |
| 2.4 Summary | 第25-27页 |
| Chapter Three Theoretical Foundations | 第27-32页 |
| 3.1 Robinson’s Cognition Hypothesis: Triadic Componential Framework | 第27-28页 |
| 3.2 Skehan and Foster’s Limited Attentional Capacity Model | 第28-30页 |
| 3.3 The Limited Information-Processing Theory | 第30-32页 |
| Chapter Four Methodology | 第32-43页 |
| 4.1 Research Questions | 第32页 |
| 4.2 Research Participants | 第32页 |
| 4.3 Research Instruments | 第32-35页 |
| 4.3.1 Pre-test | 第32-33页 |
| 4.3.2 The Scoring Principles and Criteria for Senior Middle School | 第33-34页 |
| 4.3.3 Post-test | 第34-35页 |
| 4.4 Writing Tasks | 第35-36页 |
| 4.5 Measurements of Fluency, Accuracy and Complexity | 第36-39页 |
| 4.5.1 Measure of Fluency | 第36-37页 |
| 4.5.2 Measure of Accuracy | 第37页 |
| 4.5.3 Measure of Complexity | 第37-39页 |
| 4.6 Research Procedure | 第39-41页 |
| 4.7 Data Collection and Analysis | 第41-43页 |
| Chapter Five Results and Discussion | 第43-51页 |
| 5.1 Results and Discussion of the Pretest | 第43-44页 |
| 5.2 Effects of Different Task Complexity on Learners’ Written Output | 第44-48页 |
| 5.2.1 Effects of Different Task Complexity on Learners’ Written Output Concerning Fluency | 第44-45页 |
| 5.2.2 Effects of Different Task Complexity on Learners’Written Output Concerning Accuracy | 第45-46页 |
| 5.2.3 Effects of Different Task Complexity on Learners’Written Output Concerning Complexity | 第46-48页 |
| 5.3 The Discussions of Different Task Complexity on Learners’ Written Output | 第48-51页 |
| Chapter Six Conclusion | 第51-54页 |
| 6.1 Major Findings | 第51页 |
| 6.2 Implications of the Study | 第51-52页 |
| 6.3 Limitations and Suggestions of the Study | 第52-54页 |
| References | 第54-59页 |
| Appendix Ⅰ Writing Material of Pre-test | 第59-60页 |
| Appendix Ⅱ The Scoring Principles and Criteria for Senior Middle School | 第60-62页 |
| Appendix Ⅲ The Instructions for Simple Task | 第62-63页 |
| Appendix Ⅳ The Instructions for Complex Task | 第63-64页 |
| Acknowledgements | 第64页 |
