| Acknowledgements | 第3-4页 |
| Abstract | 第4-6页 |
| 摘要 | 第7-11页 |
| Chapter One Introduction | 第11-16页 |
| 1.1 General description of the study | 第11-13页 |
| 1.2 Motivations for the study | 第13-14页 |
| 1.3 Significance of the study | 第14-15页 |
| 1.4 structure of the thesis | 第15-16页 |
| Chapter Two Literature Review | 第16-27页 |
| 2.1 Discussions of the key terms in this study | 第16-19页 |
| 2.1.1 Definitions of heterogeneous class | 第16-17页 |
| 2.1.2 Definitions of PWP teaching model | 第17-18页 |
| 2.1.3 Definitions of the Integrative approach | 第18-19页 |
| 2.1.4 Definitions of Task-based Teaching Approach | 第19页 |
| 2.2 Theoretical bases in this study | 第19-24页 |
| 2.2.1 Krashen's Input Hypothesis | 第19-21页 |
| 2.2.2 Scaffolding theory | 第21-22页 |
| 2.2.3 Schema theory | 第22-24页 |
| 2.2.3.1 Origin and development of schema theory | 第22页 |
| 2.2.3.2 The relationship between schema and reading comprehension | 第22-23页 |
| 2.2.3.3 Schema type | 第23-24页 |
| 2.3 Previous studies on heterogeneous classes aborad and in China | 第24-27页 |
| 2.3.1 Previous studies on heterogeneous classes aborad | 第24-25页 |
| 2.3.2 Previous studies on heterogeneous classes in China | 第25-27页 |
| Chapter Three Description of Heterogeneous Classes | 第27-36页 |
| 3.1 Description of teaching material | 第27-28页 |
| 3.2 Description of three heterogeneous classes | 第28-31页 |
| 3.2.1 Description of Case 1 | 第28-29页 |
| 3.2.2 Description of Case 2 | 第29-30页 |
| 3.2.3 Description of Case 3 | 第30-31页 |
| 3.3 Description of self-reflection and comments | 第31-36页 |
| 3.3.1 Descriptions of three teachers' self-reflections | 第31-34页 |
| 3.3.1.1 Descriptions of TA's self-reflection | 第31-32页 |
| 3.3.1.2 Descriptions of TB's self-reflection | 第32-33页 |
| 3.3.1.3 Descriptions of TC's self-reflection | 第33-34页 |
| 3.3.2 Description of expert's comments | 第34-36页 |
| Chapter Four Analysis of Three Heterogeneous Classes | 第36-46页 |
| 4.1 Analysis of teachers and students | 第36-37页 |
| 4.2 Analysis of teaching material | 第37页 |
| 4.3 Analysis of teaching objectives | 第37-38页 |
| 4.4 Analysis of teaching methods and designs | 第38-46页 |
| 4.4.1 Analysis of Case 1 | 第38-40页 |
| 4.4.2 Analysis of Case 2 | 第40-42页 |
| 4.4.3 Analysis of Case 3 | 第42-43页 |
| 4.4.4 A summary of the analysis of the three cases | 第43-46页 |
| Chapter Five Conclusion | 第46-50页 |
| 5.1 Major findings | 第46-47页 |
| 5.2 Pedagogical implications | 第47-48页 |
| 5.3 Limitations and suggestions for future | 第48-50页 |
| References | 第50-53页 |
| Appendix Ⅰ: The teaching material | 第53-58页 |
| Appendix Ⅱ: Transcription of three cases | 第58-67页 |
