| Acknowledgements | 第1-6页 |
| Abstract | 第6-8页 |
| 中文摘要 | 第8-13页 |
| Chapter One Introduction | 第13-18页 |
| ·Background of the Study | 第13-14页 |
| ·Significance of the Study | 第14-16页 |
| ·Organization of the Study | 第16-18页 |
| Chapter Two Literature Review | 第18-40页 |
| ·Overview of Previous Researches on Task-based Approach | 第18-21页 |
| ·Previous Researches on Task-based Approach Abroad | 第18-19页 |
| ·Previous Researches on Task-based Approach in China | 第19-21页 |
| ·Rationales of Task-based Approach | 第21-27页 |
| ·Communicative Language Teaching | 第22-23页 |
| ·Social Constructivist Theory | 第23-25页 |
| ·Second Language Acquisition Theory | 第25-27页 |
| ·Task | 第27-32页 |
| ·Definitions of Task | 第27-28页 |
| ·Task Types | 第28-29页 |
| ·Task components | 第29-31页 |
| ·Task Design | 第31-32页 |
| ·Task-based Approach | 第32-40页 |
| ·Definition of TBA | 第32-34页 |
| ·The Framework of TBA | 第34-36页 |
| ·Principles of Designing Tasks in TBA | 第36-37页 |
| ·Roles of Teachers and Students in TBA | 第37-40页 |
| Chapter Three Writing and Writing Instruction | 第40-52页 |
| ·Definition of Writing | 第40-41页 |
| ·The Importance of English Writing Instruction | 第41页 |
| ·Requirements for English Writing Instruction | 第41-43页 |
| ·Main Approaches in English Writing Instruction | 第43-52页 |
| ·The Controlled Composition Approach | 第44-45页 |
| ·The Current-traditional Rhetoric Approach | 第45-46页 |
| ·The Process Approach | 第46-48页 |
| ·The Length Approach | 第48-49页 |
| ·Task-based Approach | 第49-52页 |
| Chapter Four Research Methodology | 第52-67页 |
| ·The Purpose and Hypotheses of the Experiment | 第52页 |
| ·Research Subjects | 第52-53页 |
| ·Research Period | 第53-54页 |
| ·Research Instruments | 第54-56页 |
| ·Research Procedure | 第56-67页 |
| ·Experimental treatment in experimental class | 第58-64页 |
| ·Experimental treatment in control class | 第64-67页 |
| Chapter Five Data Collection and Analysis | 第67-74页 |
| ·Results and analysis of questionnaires | 第67-70页 |
| ·Results and analysis | 第70-74页 |
| Chapter Six Conclusion | 第74-79页 |
| ·Major Findings | 第74-75页 |
| ·Pedagogical Implications | 第75-77页 |
| ·Limitations and suggestions for the research | 第77-79页 |
| References | 第79-82页 |
| Appendixes | 第82-87页 |
| Appendix 1 imitated NMET writing test as pre-test | 第82-83页 |
| Appendix 2 questionnaire statements related to writing interest and attitude | 第83-84页 |
| Appendix 3 rating standards of NMET for writing | 第84-86页 |
| Appendix 4 imitated NMET writing test as post-test | 第86-87页 |
| Appendix 5 writing topics during experimental weeks | 第87页 |
