| Acknowledgements | 第1-8页 |
| Contents | 第8-11页 |
| Tables | 第11-12页 |
| Figures | 第12-13页 |
| 1 Introduction: Context and Significance of the Research Problem | 第13-17页 |
| ·Background of the research | 第14-15页 |
| ·Significance of the research | 第15页 |
| ·Structure of the paper | 第15-17页 |
| 2 Problems in EFL | 第17-27页 |
| ·Questionnaires about the learners' ability of language usage | 第17-20页 |
| ·Subjects and the questionnaire | 第17-18页 |
| ·Analysis and findings | 第18-19页 |
| ·Learners' failure in using language | 第19-20页 |
| ·Causes of the problem | 第20-25页 |
| ·Inefficiency of EFL teaching | 第20-21页 |
| ·Learners' reactions to learning | 第21-25页 |
| ·Other factors | 第25-27页 |
| 3 Task-based Instruction in EFL | 第27-40页 |
| ·Fundamental concepts for task-based instruction | 第27-33页 |
| ·'Task'defined and described | 第27-29页 |
| ·Related research on task-based instruction | 第29-31页 |
| ·Components of tasks | 第31-33页 |
| ·A rationale of task-based instruction | 第33-37页 |
| ·Social interactionism | 第33-34页 |
| ·Constructivism | 第34-36页 |
| ·Ausubel's meaningful learning theory | 第36-37页 |
| ·The philosophy of New English Curriculum Standards | 第37-38页 |
| ·Potentials of task-based instruction | 第38-40页 |
| 4 Application of Task-based Instruction | 第40-61页 |
| ·Task designing | 第40-48页 |
| ·Principles of task designing | 第41页 |
| ·Sequences of tasks | 第41-43页 |
| ·Task difficulty | 第43-44页 |
| ·Examples of task designing | 第44-48页 |
| ·Class activities | 第48-50页 |
| ·Teachers as mediators | 第50-53页 |
| ·Mediation of the teacher | 第50页 |
| ·Key features of mediation | 第50-51页 |
| ·Application of mediation theory | 第51-53页 |
| ·The teaching of language knowledge in task-based instruction | 第53-54页 |
| ·Motivating students | 第53页 |
| ·Knowledge and skills teaching | 第53-54页 |
| ·Performance assessment in the EFL classroom | 第54-61页 |
| ·Performance assessment and task-based instruction | 第55-56页 |
| ·Types of performance assessment | 第56-57页 |
| ·Procedures | 第57-58页 |
| ·Ethical guidelines | 第58页 |
| ·Assessment of performance assessment | 第58-59页 |
| ·Sample items | 第59-61页 |
| 5. Conclusion | 第61-64页 |
| ·Major findings from the study | 第61-62页 |
| ·Implications for pedagogy | 第62-63页 |
| ·Problems with task-based instruction yet to be solved | 第63-64页 |
| References | 第64-67页 |
| Appendix A | 第67-68页 |
| Appendix B | 第68-69页 |
| Appendix C | 第69-70页 |
