| ACKNOWLEDGEMENTS | 第4-5页 |
| 摘要 | 第5-7页 |
| ABSTRACT | 第7-9页 |
| TABLE OF CONTENTS | 第10-13页 |
| LIST OF TABLES | 第13-14页 |
| LIST OF FIGURES | 第14-15页 |
| LIST OF ABBREVIATIONS | 第15-17页 |
| Chapter One INTRODUCTION | 第17-21页 |
| 1.1 Research Background | 第17-18页 |
| 1.2 Aim and Significance of the Present Study | 第18-19页 |
| 1.3 The Overall Structure of the Thesis | 第19-21页 |
| Chapter Two LITERATURE REVIEW | 第21-37页 |
| 2.1 Working Memory | 第21-27页 |
| 2.1.1 The development of the concept of WM | 第21-24页 |
| 2.1.2 Research on WM and widely-used measurements | 第24-25页 |
| 2.1.3 Scoring methods | 第25-27页 |
| 2.2 Research on WM and SLA | 第27-36页 |
| 2.2.1 Research on relationship between WM and SLA | 第27-32页 |
| 2.2.2 Research on relationship between modality and WM in SLA | 第32-33页 |
| 2.2.3 Research on relationship between L2 proficiency and WM in SLA | 第33-36页 |
| 2.3 Summary | 第36-37页 |
| Chapter Three METHODOLOGY | 第37-49页 |
| 3.1 Research Questions and Hypotheses | 第37-39页 |
| 3.2 Pilot Study | 第39-44页 |
| 3.2.1 Participants | 第39页 |
| 3.2.2 Materials | 第39-41页 |
| 3.2.3 Measurements | 第41-42页 |
| 3.2.4 Procedures | 第42-44页 |
| 3.3 Main Study | 第44-46页 |
| 3.3.1 Participants | 第44页 |
| 3.3.2 Materials | 第44-45页 |
| 3.3.3 Measurements | 第45页 |
| 3.3.4 Procedures | 第45页 |
| 3.3.5 Scoring | 第45-46页 |
| 3.4 Data Collection and Data Analysis | 第46-48页 |
| 3.5 Summary | 第48-49页 |
| Chapter Four RESULTS AND DISCUSSION | 第49-69页 |
| 4.1 L2 PL/CE Capacities under Different Modality Conditions | 第49-59页 |
| 4.1.1 Difference between auditory L2 PL capacity and visual L2 PL capacity | 第49-53页 |
| 4.1.2 Difference between auditory L2 CE capacity and visual L2 CE capacity | 第53-58页 |
| 4.1.3 Tentative conclusion 1 | 第58-59页 |
| 4.2 Relationship between L2 Proficiency and PL/CE Capacity | 第59-67页 |
| 4.2.1 Relationship between L2 proficiency and PL capacity | 第59-62页 |
| 4.2.2 Relationship between L2 proficiency and CE capacity | 第62-66页 |
| 4.2.3 Tentative conclusion 2 | 第66-67页 |
| 4.3 Summary | 第67-69页 |
| Chapter Five CONCLUSIONS | 第69-71页 |
| 5.1 Major Findings | 第69-70页 |
| 5.2 Limitations and Suggestions | 第70页 |
| 5.3 Implications | 第70-71页 |
| REFERENCES | 第71-83页 |
| Appendices | 第83-95页 |
| Appendix Ⅰ Instructions of the Auditory Alphabet Span Test and the Listening Span Test (Chinese version) | 第83-85页 |
| Appendix Ⅱ Instructions of the Visual Alphabet Span Test and the Reading Span Test (Chinese version) | 第85-86页 |
| Appebdix Ⅲ Materials for Auditory/ Visual Alphabet Span Tests | 第86-88页 |
| Appendix Ⅳ Materials for the Listening/ Reading Span Test | 第88-92页 |
| Appendix Ⅴ Answering Sheet for the Practice Test (Chinese version) | 第92-93页 |
| Appendix Ⅵ Answering Sheet for the Formal Alphabet Span Test (Chinese version) | 第93-94页 |
| Appendix Ⅶ Answering Sheet for the Formal Reading Span Test (Chinese version) | 第94-95页 |
| 附录：作者在攻读硕士学位期间发表的论文 | 第95页 |
