| 摘要 | 第1-5页 |
| Abstract | 第5-10页 |
| 1. Introduction | 第10-26页 |
| ·Literature Review | 第10-16页 |
| ·Factors Affecting Oral Production | 第10-12页 |
| ·Information Processing Model | 第12-15页 |
| ·A Simplified Model of Message Processing | 第15-16页 |
| ·The Significance and the Purpose of the Present Study | 第16-18页 |
| ·Definitions of Key Terms | 第18-21页 |
| ·Oral Proficiency | 第18-19页 |
| ·L2 Proficiency | 第19-21页 |
| ·Hypotheses and Research Questions | 第21-23页 |
| ·A Causal Model Derived from Ma Guanghui's Research | 第21-22页 |
| ·Research Questions | 第22-23页 |
| ·The Specific Priori Conceptual Model | 第23-25页 |
| ·The Overall Structure of the Thesis | 第25页 |
| ·Summary | 第25-26页 |
| 2. Research Design | 第26-39页 |
| ·Research Design for the Quantitative Part of the Study | 第26-37页 |
| ·Hypotheses | 第26页 |
| ·Subjects | 第26页 |
| ·Instruments | 第26-32页 |
| ·Data Collection | 第32页 |
| ·Treatment of the Data | 第32-34页 |
| ·Procedures for Data Analysis | 第34-37页 |
| ·Research Design for the Qualitative Part of the Study | 第37-39页 |
| ·Research Questions | 第37页 |
| ·Subjects | 第37-38页 |
| ·Data Collection and Data Analysis | 第38-39页 |
| 3. Result and Discussion of the Quantitative Part of the Study | 第39-53页 |
| ·A General Description of the Causal Model | 第39-41页 |
| ·The Direct Effects of L2 Proficiency Variables on L2 Oral Proficiency | 第41-45页 |
| ·L2 Production Vocabulary | 第41-43页 |
| ·L2 Listening Ability | 第43-44页 |
| ·L2 Writing Ability | 第44-45页 |
| ·The Indirect Effects of L2 Proficiency Variables on L2 Oral Proficiency | 第45-48页 |
| ·L2 Comprehension Vocabulary | 第45-46页 |
| ·L2 Comprehension Discourse | 第46-47页 |
| ·L2 Reading Ability | 第47-48页 |
| ·L2 Production Discourse | 第48页 |
| ·L2 Variables Out of the Causal Model | 第48-49页 |
| ·A Comparison of the Causal Model Built in this Study and Ma's Causal Model | 第49-51页 |
| ·The Similarities in these Two Models | 第50-51页 |
| ·The Differences in these Two Models | 第51页 |
| ·Summary | 第51-53页 |
| 4. Result and Discussion of the Qualitative Part of the Study | 第53-61页 |
| ·Distinctive Performance in Oral Test | 第53-56页 |
| ·Different Performance in Vocabulary | 第53-55页 |
| ·Different Performance in Grammar | 第55页 |
| ·Different Performance in Discourse | 第55-56页 |
| ·Variation of L2 Competence and Skills | 第56-57页 |
| ·Influence of L2 Production Vocabulary, Writing Ability and Listening Ability | 第57-60页 |
| ·Influence of L2 Production Vocabulary | 第57-58页 |
| ·Influence of L2 Listening Ability | 第58-59页 |
| ·Influence of L2 Writing Ability | 第59-60页 |
| ·Summary | 第60-61页 |
| 5. Conclusion | 第61-67页 |
| ·Findings of the Study | 第61-62页 |
| ·Theoretical Significance of the Findings | 第62-63页 |
| ·The Adoption of the Multidimensional Conceptualization of L2 Proficiency | 第62页 |
| ·A Comprehensive Causal Model Derived from this Study | 第62-63页 |
| ·Practical Significance of the Findings | 第63-64页 |
| ·Weakness and Limitation of the Study | 第64-65页 |
| ·Suggestion for Future Research | 第65页 |
| ·Summary | 第65-67页 |
| Acknowledgements | 第67-68页 |
| Bibliography | 第68-72页 |
| Appendices | 第72-89页 |
| Appendix 1 Tests of L2 Comprehension Competence | 第72-78页 |
| Appendix 2 Tests of L2 Production Competence | 第78-81页 |
| Appendix 3 Tests of L2 Comprehension Skills | 第81-86页 |
| Appendix 4 English Writing Task | 第86页 |
| Appendix 5 Oral English Test | 第86-87页 |
| Appendix 6 英语口语综合评分标准评分等级 | 第87页 |
| Appendix 7 大学英语四级考试作文评分原则和评分标准 | 第87-89页 |
| Articles Published | 第89页 |
