| Acknowledgements | 第5-6页 |
| Abstract | 第6-7页 |
| 摘要 | 第8-15页 |
| Chapter One Introduction | 第15-19页 |
| 1.1 Research Background | 第15-16页 |
| 1.2 Research Objectives | 第16-17页 |
| 1.3 Research Significance | 第17-18页 |
| 1.4 Organization of the Thesis | 第18-19页 |
| Chapter Two Literature Review | 第19-35页 |
| 2.1 Definitions of Key Concepts | 第19-25页 |
| 2.1.1 Oral Continuation Task | 第19-21页 |
| 2.1.2 Oral English Ability | 第21-24页 |
| 2.1.3 Low Achiever | 第24-25页 |
| 2.2 Previous Studies on Continuation Tasks | 第25-29页 |
| 2.2.1 Theoretical Studies on Continuation Tasks | 第25-26页 |
| 2.2.2 Empirical Studies on Continuation Tasks | 第26-29页 |
| 2.3 Previous Studies on Factors Influencing Students’ Speaking Ability | 第29-32页 |
| 2.4 Limitations in Previous Research | 第32-35页 |
| Chapter Three Theoretical Framework | 第35-45页 |
| 3.1 Output Hypothesis | 第35-38页 |
| 3.1.1 Overview of Output Hypothesis | 第35-36页 |
| 3.1.2 Four Functions of the Output Related to This Study | 第36-38页 |
| 3.2 Scaffolding Instruction | 第38-45页 |
| 3.2.1 Definition of Scaffolding Instruction | 第39-40页 |
| 3.2.2 Classifications of Scaffolding Instruction | 第40-41页 |
| 3.2.3 Five Steps of Scaffolding Instruction | 第41-43页 |
| 3.2.4 Scaffolding Designed in This Study | 第43-45页 |
| Chapter Four Research Methodology | 第45-67页 |
| 4.1 Case Study Design | 第45-46页 |
| 4.2 Research Questions | 第46页 |
| 4.3 Participants | 第46-47页 |
| 4.4 Instruments and Materials | 第47-54页 |
| 4.4.1 Speaking Tests | 第48-50页 |
| 4.4.2 Oral Continuation Task Materials | 第50-52页 |
| 4.4.3 Texts of Continuation Tasks Completed by Participants | 第52-53页 |
| 4.4.4 Semi-structured Interviews | 第53-54页 |
| 4.5 Research Procedures | 第54-58页 |
| 4.5.1 Pre-training | 第54-55页 |
| 4.5.2 Training Process of Oral and Written-oral Continuation Tasks | 第55-56页 |
| 4.5.3 Post-training | 第56-58页 |
| 4.6 Data Collection and Analysis | 第58-67页 |
| 4.6.1 Speaking Tests | 第58-59页 |
| 4.6.2 Oral Continuation Task Materials | 第59-64页 |
| 4.6.3 Interviews | 第64-67页 |
| Chapter Five Results and Discussion | 第67-89页 |
| 5.1 Results | 第67-84页 |
| 5.1.1 Results of the Oral and Written-oral Continuation Tasks | 第67-75页 |
| 5.1.2 Results of the Speaking Tests | 第75-80页 |
| 5.1.3 Results of the Interviews | 第80-84页 |
| 5.2 Discussion | 第84-89页 |
| 5.2.1 Discussion in Terms of the First Question | 第84-85页 |
| 5.2.2 Discussion in Terms of the Second Question | 第85页 |
| 5.2.3 Discussion in Terms of the Third Question | 第85-86页 |
| 5.2.4 Discussion in Terms of the Fourth Question | 第86-89页 |
| Chapter Six Conclusions | 第89-97页 |
| 6.1 Major Findings of the Study | 第89-92页 |
| 6.2 Pedagogical Implications | 第92-94页 |
| 6.3 Limitations and Suggestions for Further Research | 第94-97页 |
| References | 第97-105页 |
| Appendices | 第105-129页 |
| Appendix Ⅰ The Pre-test | 第105-109页 |
| Appendix Ⅱ The Post-test | 第109-113页 |
| Appendix Ⅲ The Results of Pre-test and Post-test | 第113-117页 |
| Appendix Ⅳ The Dimensions of Scoring Criterion on Three Parts of the Tests | 第117-121页 |
| Appendix Ⅴ The Results of S1 and S2’s Scores of the Pre-test | 第121-123页 |
| Appendix Ⅵ The Results of S1 and S2’s Scores of the Post-test | 第123-125页 |
| Appendix Ⅶ The Examples of Oral Continuation Task Materials | 第125-129页 |
| Appendix Ⅷ The Interviews | 第129页 |
