| Abbreviations | 第6-8页 |
| Abstract in Chinese | 第8-10页 |
| Abstract in English | 第10-11页 |
| Chapter I Introduction | 第12-15页 |
| 1.1 Research Background | 第12-13页 |
| 1.2 Research Significance and Purpose | 第13-15页 |
| Chapter II Literature Review | 第15-30页 |
| 2.1 Theoretical Basis of Communication Strategies | 第15-20页 |
| 2.1.1 Anderson’s Types of L2 Knowledge | 第15-17页 |
| 2.1.2 Bialystok’s Model of Language Proficiency | 第17-18页 |
| 2.1.3 Communicative Competence | 第18-20页 |
| 2.2 Theoretical Researches of Communication Strategies | 第20-27页 |
| 2.2.1 Definitions of Communication Strategies | 第21-23页 |
| 2.2.2 Taxonomies of Communication Strategies | 第23-26页 |
| 2.2.3 The Roles of Communication Strategies in SLA | 第26-27页 |
| 2.3 Previous Empirical Studies on Communication Strategies | 第27-30页 |
| Chapter III Methodology | 第30-34页 |
| 3.1 Objectives and Hypotheses | 第30页 |
| 3.2 Subjects | 第30-31页 |
| 3.3 Tasks | 第31-32页 |
| 3.4 Procedures | 第32-34页 |
| Chapter IV Results and Discussions | 第34-48页 |
| 4.1 Taxonomy of Communication Strategies | 第34-37页 |
| 4.2 Effects of Problem Sources on the Communication Strategies Employment | 第37-42页 |
| 4.2.1 Effects of Problem Sources on the Frequency of Communication Strategies Employment | 第37-38页 |
| 4.2.2 Effects of Problem Sources on the Type of Communication Strategies Employment | 第38-40页 |
| 4.2.3 Effects of Problem Sources on the Effectiveness of Communication Strategies Employment | 第40-42页 |
| 4.3 Effects of Target Language Proficiency on the Communication Strategies Employment | 第42-48页 |
| 4.3.1 Effects of Target Language Proficiency on the Frequency of Communication Strategies | 第42-43页 |
| 4.3.2 Effects of Target Language Proficiency on the Type of Communication Strategies | 第43-45页 |
| 4.3.3 Effects of Target Language Proficiency on the Effectiveness of Communication Strategies Employment | 第45-48页 |
| Chapter V Conclusions | 第48-53页 |
| 5.1 Conclusions | 第48-49页 |
| 5.2 Implications | 第49-51页 |
| 5.2.1 Implication for Oral English Content Design | 第49-50页 |
| 5.2.2 Implication for the Approach to Teach Oral English | 第50-51页 |
| 5.2.3 Implication for the Testing of Oral English | 第51页 |
| 5.3 Limitations | 第51-53页 |
| Bibliography | 第53-56页 |
| Appendix | 第56-59页 |
| 1. Tasks for the subjects | 第56页 |
| 2. Sample tape-transcripts of the subjects | 第56-59页 |
| 3. 攻读硕士学位期间发表论文目录 | 第59页 |
