| 摘要 | 第1-6页 |
| Abstract | 第6-10页 |
| Chapter 1 Introduction | 第10-16页 |
| ·Background of the Study | 第10-11页 |
| ·Theoretical Significance | 第11-12页 |
| ·Practical Significance | 第12-16页 |
| Chapter 2 Literature Review | 第16-19页 |
| ·Present Situation of Portfolio Evaluation at Home and Abroad | 第16页 |
| ·Task-based Teaching Research Status at home and abroad | 第16-17页 |
| ·The Research Status of English Writing at Home and Abroad | 第17-19页 |
| Chapter 3 Theoretical Foundations | 第19-35页 |
| ·Constructivism | 第19-23页 |
| ·Learning Theory and Epistemology in Constructivism | 第19-20页 |
| ·The Conception of Constructivist Teaching | 第20-23页 |
| ·Portfolio Evaluation | 第23-29页 |
| ·The Definition of Portfolio Evaluation | 第23-24页 |
| ·Characteristics of Portfolio Evaluation | 第24-25页 |
| ·Basic Types of Portfolio Evaluation | 第25-26页 |
| ·Basic Theory of Portfolio Evaluation | 第26-29页 |
| ·Task-based Teaching Method | 第29-35页 |
| ·"Task" in the Task-based Teaching Method | 第29-31页 |
| ·Theoretical Sources of the Task-based Teaching Method | 第31-34页 |
| ·the Principles of Task-based Language Teaching | 第34-35页 |
| Chapter4 Experiment of Task-based Teaching in English Writing with the PortfolioEvaluation | 第35-53页 |
| ·Research Design | 第35-36页 |
| ·Research Program | 第35-36页 |
| ·The Hypothesis of Experiment | 第36页 |
| ·Object of Study | 第36页 |
| ·The Application of Portfolio Evaluation | 第36-47页 |
| ·Envelope | 第37-38页 |
| ·Classified Catalogue | 第38-44页 |
| ·Diverse and Dynamic Evaluation | 第44-46页 |
| ·Guide Students to Use the Portfolio Properly | 第46-47页 |
| ·Model of the Task-based English Writing Teaching | 第47-53页 |
| ·Setting the Task in the Writing Teaching | 第47-49页 |
| ·Writing Teaching Mode | 第49-53页 |
| Chapter 5 Analysis and Discussion | 第53-68页 |
| ·Case Analysis | 第53-59页 |
| ·Experimental Data Collection and Analysis | 第59-65页 |
| ·Data of the Pre-experiment | 第59-62页 |
| ·Data of Post-experiment | 第62-65页 |
| ·The Result of the Experiment | 第65-68页 |
| ·The Conclusion of the Experiment | 第65-66页 |
| ·Area for Improvement of this Experiment | 第66-68页 |
| Chapter 6 Conclusion | 第68-72页 |
| ·Findings | 第68-69页 |
| ·Limitations | 第69-70页 |
| ·Suggestions | 第70-72页 |
| ACKNOWLEDGEMENTS | 第72-73页 |
| Bibliography | 第73-76页 |
| 攻读学位期间获得与学位论文相关的科研成果目录 | 第76-77页 |
| Appendix A | 第77-78页 |
| Appendix B | 第78-79页 |
| Appendix C | 第79页 |
