| 独创性声明 | 第1-4页 |
| Abstract | 第4-6页 |
| 摘要 | 第6-8页 |
| List of Tables and Figures | 第8-9页 |
| List of Abbreviations | 第9-12页 |
| Chapter 1 Introduction | 第12-23页 |
| ·The significances of the present study | 第12-16页 |
| ·The significance for syllabus and material design .....2 | 第13-14页 |
| ·The significance for teaching method | 第14-15页 |
| ·The significance for scoring standard | 第15-16页 |
| ·The research questions | 第16页 |
| ·The rationales for choosing the present study | 第16-23页 |
| ·Task-a means to realize focus on form | 第16-21页 |
| ·Writing-a way to push focus on form | 第21-23页 |
| Chapter 2 Literature review | 第23-33页 |
| ·Research on the effects of task complexity | 第24-30页 |
| ·Research on the effects of task difficulty | 第30-31页 |
| ·The difference between previous researches and the present study | 第31-33页 |
| Chapter 3 Theoretical background | 第33-43页 |
| ·The information-processing theory | 第33-35页 |
| ·Other researchers' theories of task complexity and task difficulty | 第35-38页 |
| ·Robinson's model of task complexity and task difficulty | 第38-40页 |
| ·Task complexity | 第40-41页 |
| ·Task difficulty | 第41-42页 |
| ·The adaptation of Robinson's theory in this thesis | 第42-43页 |
| Chapter 4 The design of the experiment | 第43-50页 |
| ·The hypotheses | 第43-44页 |
| ·The subjects | 第44页 |
| ·The instruments | 第44-49页 |
| ·The writing tasks | 第44-46页 |
| ·The measures | 第46-49页 |
| ·The statistical device | 第49页 |
| ·The procedure of the experiment | 第49-50页 |
| Chapter 5 The analysis and discussion | 第50-68页 |
| ·The result of research question 1: Task complexity and writing production | 第50-60页 |
| ·The data of task complexity& production: fluency across tasks | 第50-52页 |
| ·The analysis and discussion of research question 1: fluency across tasks | 第52-53页 |
| ·The data of task complexity& production: complexity across tasks | 第53-55页 |
| ·The analysis and discussion of research question 1: complexity across tasks | 第55-57页 |
| ·The data of task complexity& production: accuracy across tasks | 第57-58页 |
| ·The analysis and discussion of research question 1: accuracy across tasks | 第58-60页 |
| ·The results of research question 2: Task difficulty and writing production | 第60-62页 |
| ·The data of task difficulty & production | 第60页 |
| ·The analysis and discussion of research question 2 | 第60-62页 |
| ·The results of research question 3: Task complexity and task difficulty | 第62-68页 |
| ·The data of task complexity & task difficulty | 第62-65页 |
| ·The analysis and discussion of research question 3 | 第65-68页 |
| Chapter 6 Conclusion | 第68-72页 |
| ·The conclusion of the present study | 第68-70页 |
| ·The limitations and prospects | 第70-72页 |
| Bibliography | 第72-83页 |
| Appendix Ⅰ | 第83-84页 |
| Appendix Ⅱ | 第84-86页 |
| Acknowledgements | 第86页 |
