| Abstract in English | 第1-10页 |
| Abstract in Chinese | 第10-12页 |
| Chapter One Introduction | 第12-15页 |
| ·The Research Background | 第12-13页 |
| ·The Significance of the Present Research | 第13-14页 |
| ·The Structure of the Thesis | 第14-15页 |
| Chapter two Literature Review | 第15-36页 |
| ·Classroom Reticence | 第15-18页 |
| ·The Definitions of Classroom Reticence | 第15-17页 |
| ·Previous Studies of Classroom Reticence | 第17-18页 |
| ·Task-Based Approach | 第18-36页 |
| ·The Definitions of Task | 第19-21页 |
| ·The Components of Task | 第21-22页 |
| ·The Framework of the Task-Based Approach | 第22-25页 |
| ·Theoretical Foundations | 第25-30页 |
| ·The Input and Output Hypotheses | 第26-29页 |
| ·Constructivism | 第29-30页 |
| ·Previous Studies of Task-Based Approach | 第30-36页 |
| ·The Study of Task-Based Approach Abroad | 第30-33页 |
| ·The Study of Task-Based Approach at Home | 第33-35页 |
| ·Summary | 第35-36页 |
| Chapter Three A Pilot Survey of Current Situation of Classroom Reticence | 第36-47页 |
| ·The Analysis of Classroom Reticence | 第37-43页 |
| ·The Analysis of the Degree of Classroom Reticence | 第37-39页 |
| ·The Analysis of Causes of Classroom Reticence | 第39-43页 |
| ·The Design of Effective Tasks Based on the Pilot Survey | 第43-47页 |
| ·Diversified Forms of the Designed Tasks | 第43-44页 |
| ·Pedagogic Forms of the Designed Tasks | 第44-45页 |
| ·Feasibility of Tasks | 第45页 |
| ·Difficulty of Tasks | 第45-47页 |
| Chapter Four Methodology | 第47-55页 |
| ·Hypotheses | 第47页 |
| ·Subjects | 第47-48页 |
| ·Instruments | 第48-49页 |
| ·The Unwillingness-to-Communicate Scale (UCS) | 第48页 |
| ·Tests | 第48页 |
| ·Classroom Observations | 第48-49页 |
| ·Procedures of the Empirical Study | 第49-54页 |
| ·Pre-tests | 第49-50页 |
| ·Pre-test of Subjects’Classroom Reticence Level | 第49-50页 |
| ·Pre-test of Students’English Achievements | 第50页 |
| ·Classroom Reticence Audio-Recording before the Experiment | 第50页 |
| ·The Application of Task-Based Approach | 第50-53页 |
| ·The Pre-Task Stage | 第50-51页 |
| ·The Task Cycle | 第51页 |
| ·The Post-Task | 第51页 |
| ·The Sample Study | 第51-53页 |
| ·Classroom Audio-Recording during the Experiment | 第53页 |
| ·Post-tests | 第53-54页 |
| ·Post-test of Students’Classroom Reticence Level | 第53页 |
| ·Post-test of Students’English Achievements | 第53页 |
| ·Classroom Audio-Recording after the Experiment | 第53-54页 |
| ·Data Collection and Analysis | 第54-55页 |
| Chapter Five Results and Discussion | 第55-62页 |
| ·Contrastive Analysis of Students’Classroom Reticence Level | 第55-57页 |
| ·Students’Pre-test Classroom Reticence Level | 第55-56页 |
| ·Students’Post-test Classroom Reticence Level | 第56-57页 |
| ·Contrastive Analysis of Students’English Achievements | 第57-58页 |
| ·Students’Pre-test English Achievements | 第57页 |
| ·Students’Post-test English Achievements | 第57-58页 |
| ·Contrastive Analysis of Audio-Recordings | 第58-60页 |
| ·Discussion | 第60-62页 |
| Chapter Six Conclusion | 第62-64页 |
| ·Major Findings | 第62页 |
| ·Limitations of the Study | 第62-63页 |
| ·Suggestions for Further Research | 第63-64页 |
| Bibliography | 第64-71页 |
| Appendix I The Questionnaire of Causes of Classroom Reticence | 第71-73页 |
| Appendix II The Unwillingness-to-Communicate Scale (UCS) | 第73-75页 |
| Appendix III English Test Papers | 第75-76页 |
| Appendix IV Teaching Material of the Sample Study | 第76-78页 |
| Appendix V Scores of Reticence Level of Pre-test and Post-test | 第78-80页 |
| Appendix VI The Scores of Students’English Achievements | 第80-82页 |
| Publications | 第82-83页 |
| Acknowledgements | 第83页 |
