| Acknowledgements | 第4-5页 |
| Abstract in Chinese | 第5-6页 |
| Abstract in English | 第6-7页 |
| Contents | 第8-11页 |
| List of Tables | 第11-12页 |
| Chapter One Introduction | 第12-19页 |
| 1.1 Research background | 第12-16页 |
| 1.1.1 Characteristics of vocational college students | 第12-13页 |
| 1.1.2 The present situation of oral English teaching for non-English majors in vocational college | 第13-16页 |
| 1.2 The purpose and significance of the research | 第16-17页 |
| 1.3 Research questions | 第17页 |
| 1.4 The organization of the thesis | 第17-19页 |
| Chapter Two Literature Review | 第19-31页 |
| 2.1 A brief introduction to CLA | 第19-23页 |
| 2.1.1 The definition of CLA | 第19-21页 |
| 2.1.2 Five essential elements of CLA | 第21-23页 |
| 2.2 The previous researches on CLA abroad and at home | 第23-31页 |
| 2.2.1 The previous researches on CLA abroad | 第23-27页 |
| 2.2.2 The previous researches on CLA at home | 第27-28页 |
| 2.2.3 Comments on of the previous researches on CLA | 第28-31页 |
| Chapter Three Theoretical Framework | 第31-38页 |
| 3.1 Major theories related to CLA | 第31-34页 |
| 3.1.1 Motivational theory | 第31页 |
| 3.1.2 Social cohesion theory | 第31-32页 |
| 3.1.3 Developmental theory | 第32-33页 |
| 3.1.4 Cognitive elaboration theory | 第33页 |
| 3.1.5 Constructivism theory | 第33-34页 |
| 3.1.6 Humanistic psychology theory | 第34页 |
| 3.2 The strategy of CLA in oral English teaching | 第34-38页 |
| 3.2.1 The training before implementing CLA | 第34-36页 |
| 3.2.2 Task design | 第36-38页 |
| Chapter Four The Implementation of the Research | 第38-51页 |
| 4.1 Subjects | 第38-39页 |
| 4.2 Instruments | 第39-41页 |
| 4.2.1 Pre-test and post-test | 第39-40页 |
| 4.2.2 Classroom observation | 第40页 |
| 4.2.3 Questionnaire | 第40-41页 |
| 4.2.4 Semi-structured interview | 第41页 |
| 4.3 The procedure of the experiment | 第41-48页 |
| 4.3.1 Dividing groups | 第41-42页 |
| 4.3.2 The tasks in conducting CLA | 第42-48页 |
| 4.3.2.1 Story telling | 第42-47页 |
| 4.3.2.2 Role playing | 第47-48页 |
| 4.4 Different approaches applied in CC and EC | 第48-51页 |
| Chapter Five Findings and Analyses | 第51-62页 |
| 5.1 Improvement of the students' oral English | 第51-55页 |
| 5.1.1 The results and analyses of pre- and post-test | 第51-54页 |
| 5.1.2 The reasons for students' improvement of oral English | 第54-55页 |
| 5.2 Students' psychological change and their attitudes toward CLA | 第55-62页 |
| 5.2.1 The results of the questionnaires | 第55-57页 |
| 5.2.2 The results of classroom observation and students' interview | 第57-58页 |
| 5.2.3 The analyses based on the results | 第58-62页 |
| Chapter Six Conclusion | 第62-68页 |
| 6.1 Summary of the thesis | 第62-63页 |
| 6.2 Implications and reflections | 第63-66页 |
| 6.3 Limitation and suggestions for further research | 第66-68页 |
| Bibliography | 第68-72页 |
| Appendix Ⅰ | 第72-74页 |
| Appendix Ⅱ | 第74-75页 |
| Appendix Ⅲ | 第75-77页 |
