| List of Tables | 第1-9页 |
| List of Abbreviations | 第9-10页 |
| Abstract in Chinese | 第10-11页 |
| Abstract in English | 第11-13页 |
| Chapter One Introduction | 第13-22页 |
| ·The Background to the Study | 第13-19页 |
| ·Task-based Language Teaching | 第13-15页 |
| ·The Benefits of Meaning Negotation | 第15-19页 |
| ·The Purpose of the Study | 第19-20页 |
| ·The Significance of the Present Study | 第20页 |
| ·The Scope of the Study | 第20-22页 |
| Chapter Two Literature Review | 第22-30页 |
| ·The Studies Abroad | 第23-28页 |
| ·The Studies at Home | 第28-29页 |
| ·The Starting Point and Characteristics of This Study | 第29-30页 |
| Chapter Three Theoretical Foundation | 第30-52页 |
| ·Krashen and Input Hypothesis | 第30-33页 |
| ·Input Hypothesis | 第30-31页 |
| ·Critiques of Krashen's Input Hypothesis | 第31-33页 |
| ·Long and Interaction Hypothesis | 第33-42页 |
| ·Schmidt and Noticing | 第37-39页 |
| ·Critiques of Long's (1983) Interaction Hypothesis | 第39-41页 |
| ·Conclusion on the Importance of Interaction Hypothesis | 第41-42页 |
| ·The Tasks | 第42-50页 |
| ·Definitions of Task in the Literature | 第42-44页 |
| ·Differences Between Exercise and Task | 第44-45页 |
| ·Criteria for "good" Language Learning Task | 第45-47页 |
| ·Four Types of Tasks | 第47-50页 |
| ·Different Types of Meaning Negotiations and Exemplars | 第50页 |
| ·Research Question and Hypotheses | 第50-52页 |
| Chapter Four Research Method | 第52-57页 |
| ·The Design | 第52页 |
| ·The Subjects | 第52-53页 |
| ·The Setting | 第53页 |
| ·Task Design | 第53-54页 |
| ·Procedure | 第54-56页 |
| ·Coding | 第56-57页 |
| Chapter Five The Results | 第57-62页 |
| ·Null Hypothesis | 第57-59页 |
| ·Hypothesis 1(a) | 第59-60页 |
| ·Hypothesis 1(b) | 第60-62页 |
| Chapter Six Discussion | 第62-68页 |
| ·General Discussion | 第62-65页 |
| ·Implications of the Research to EFL Teaching | 第65-68页 |
| Chapter Seven Conclusion | 第68-70页 |
| ·General Conclusion | 第68页 |
| ·Limitations and Suggestions | 第68-70页 |
| References | 第70-78页 |
| Appendices | 第78-88页 |
