| Abstract | 第1-5页 |
| 中文摘要 | 第5-7页 |
| Table of Contents | 第7-9页 |
| Chapter One Introduction | 第9-13页 |
| ·Background of the Study | 第9-11页 |
| ·Purpose and Significance of the Study | 第11-12页 |
| ·Organization of the thesis | 第12-13页 |
| Chapter Two Review of Literature | 第13-28页 |
| ·Definition of ambiguity and TOA/ITOA | 第13-14页 |
| ·Classification of Tolerance of Ambiguity | 第14-15页 |
| ·Factors affecting TOA in second language acquisition | 第15-20页 |
| ·TOA and risk-taking | 第15页 |
| ·TOA and language learning strategy | 第15-17页 |
| ·TOA and anxiety | 第17-19页 |
| ·TOA and ego boundary | 第19-20页 |
| ·Development of research on TOA in second language acquisition | 第20-22页 |
| ·Differences in TOA between students of low proficiency and high proficiency | 第22-24页 |
| ·Differences in TOA between males and females | 第24-25页 |
| ·Differences in TOA between arts major and science major students | 第25-27页 |
| ·Research questions of this study | 第27-28页 |
| Chapter Three Research Methodology | 第28-31页 |
| ·Research Subjects | 第28页 |
| ·Research Instruments | 第28-29页 |
| ·Research Questionnaire | 第28-29页 |
| ·National Entrance Test of English for MA/MS Candidates（NETEM） | 第29页 |
| ·Data collection | 第29页 |
| ·Data analysis | 第29-31页 |
| Chapter Four Results and Discussion | 第31-46页 |
| ·What is the general tendency of postgraduate students’ TOA in this study? | 第31-34页 |
| ·Are there any differences in TOA between males and females ? | 第34-38页 |
| ·Similarities in TOA between males and females | 第36-37页 |
| ·Differences in TOA between males and females | 第37-38页 |
| ·Does postgraduate students’ academic major affect their TOA? | 第38-41页 |
| ·Are there any differences in TOA by English proficiency | 第41-46页 |
| ·Learning styles | 第44页 |
| ·Learning strategies | 第44-46页 |
| Chapter Five Conclusion and Implication | 第46-50页 |
| ·Summary of the Findings in this Study | 第46-47页 |
| ·Implications for English Teaching and Learning | 第47-48页 |
| ·Arousing the awareness of TOA | 第47页 |
| ·Cultivating optimal TOA | 第47-48页 |
| ·Limitation and Recommendations for Future Research | 第48-50页 |
| References | 第50-54页 |
| Appendix 1 调查问卷 | 第54-56页 |
| ACKNOWLEDGEMENTS | 第56-57页 |
| 在读期间公开发表论文（著）及科研情况 | 第57页 |
