| Acknowledgements | 第1-8页 |
| Abstract | 第8-9页 |
| 摘要 | 第9-10页 |
| Preface (Chinese Version) | 第10-15页 |
| 一 引言 | 第10页 |
| 二 理论框架 | 第10-11页 |
| 三 文献综述 | 第11-12页 |
| 四 研究方法 | 第12-13页 |
| 五 结果与讨论 | 第13-14页 |
| 六 结论与启示 | 第14-15页 |
| List of Tables & Figures | 第15-16页 |
| Chapter 1 Introduction | 第16-20页 |
| ·Background of the study | 第16-19页 |
| ·Overview of the thesis | 第19-20页 |
| Chapter 2 Theoretical Framework | 第20-30页 |
| ·The social constructivist model of language teaching and learning | 第20-23页 |
| ·A social constructivist learning element: learning environment designing | 第23-25页 |
| ·Activity theory: another perspective on environment construction | 第25-30页 |
| Chapter 3 Literature Review | 第30-42页 |
| ·Related concepts | 第30-35页 |
| ·Learning environment: definition and classification | 第30-32页 |
| ·CALL and web-based learning environment | 第32-34页 |
| ·CEB: a means to involve students into constructing their learning environment | 第34-35页 |
| ·Selected review of related studies | 第35-42页 |
| ·Research abroad | 第35-38页 |
| ·Research in China | 第38-42页 |
| Chapter 4 Methodology | 第42-49页 |
| ·Action research | 第42页 |
| ·Participants and setting | 第42-43页 |
| ·Research purpose and research questions | 第43页 |
| ·Action process | 第43-46页 |
| ·Data collection and analysis | 第46-49页 |
| ·Questionnaire of students' feelings and perceptions about the CEB | 第46-47页 |
| ·Questionnaires used to discover changes in learners' beliefs | 第47-49页 |
| Chapter 5 Results and Discussion | 第49-78页 |
| ·The students' feelings and perceptions about the CEB | 第49-59页 |
| ·The students' attitudes towards the CEB | 第49-50页 |
| ·The students' participation in the CEB and their reasons | 第50-52页 |
| ·The students' preference of the email content | 第52-55页 |
| ·The students' perceived effect of the CEB participation | 第55-58页 |
| ·A brief summary | 第58-59页 |
| ·Changes in the students' beliefs | 第59-73页 |
| ·Belief-change about English learning | 第59-61页 |
| ·Belief-change concerning learners' motivation | 第61-63页 |
| ·Belief-change concerning teachers' role | 第63-65页 |
| ·Belief-change in students' self-efficacy | 第65-68页 |
| ·Belief-change in learning strategies | 第68-70页 |
| ·Further analysis on changes of students' beliefs | 第70-73页 |
| ·CEB as an activity system | 第73-78页 |
| ·The core elements of the activity | 第73-75页 |
| ·The motive of the activity | 第75-76页 |
| ·CEB: a sustainable project | 第76-78页 |
| Chapter 6 Conclusion | 第78-83页 |
| ·Summary of major findings | 第78-79页 |
| ·Implications for teaching in web-based learning environment | 第79-81页 |
| ·Limitations of the present research | 第81-83页 |
| References | 第83-89页 |
| Appendix I Questionnaire I (Chinese version) | 第89-92页 |
| Appendix II Questionnaire II (Chinese version) | 第92-93页 |
