| 1.Introduction | 第1-15页 |
| ·Motivation of the thesis | 第10-13页 |
| ·An overview of the thesis | 第13-14页 |
| ·A note on terminology | 第14-15页 |
| 2.Literature Review | 第15-37页 |
| ·Theoretical perspectives on group work | 第15-25页 |
| ·The pedagogical arguments of group work | 第15-18页 |
| ·The psycholinguistic rationale of group work | 第18-25页 |
| ·Comprehensible input in second language acquisition | 第18-19页 |
| ·Comprehensible output in second language acquisition | 第19-22页 |
| ·Negotiation of meaning in second language acquisition | 第22-25页 |
| ·Empirical studies on group work | 第25-33页 |
| ·Effects of tasks on group work | 第26-30页 |
| ·Research on task types | 第26-27页 |
| ·Research on one-way information gap task and two-way information gap task | 第27-30页 |
| ·Criticisms with the studies | 第30-33页 |
| ·Survey of English self-concept | 第33-35页 |
| ·Research on self-concept | 第33-34页 |
| ·Research on academic self-concept | 第34-35页 |
| ·Research on English self-concept | 第35页 |
| ·Summary | 第35-37页 |
| 3.The Study | 第37-44页 |
| ·Research questions | 第37-38页 |
| ·Methods and Procedures | 第38-43页 |
| ·Subjects | 第38页 |
| ·Questionnaire design | 第38-39页 |
| ·Tasks | 第39页 |
| ·Data collection | 第39-43页 |
| ·Questionnaire | 第39-41页 |
| ·Audio-recording | 第41-42页 |
| ·Interview | 第42-43页 |
| ·Summary | 第43-44页 |
| 4.Results and Discussions | 第44-59页 |
| ·Quantitative analysis | 第44-47页 |
| ·Examination of the two tasks | 第44-45页 |
| ·Individual learners'participations in group work | 第45-46页 |
| ·Relations between English self-concepts and participations in group work | 第46-47页 |
| ·Qualitative analysis | 第47-58页 |
| ·Qualitative analysis on students with high English self-concepts | 第48-54页 |
| ·Qualitative analysis on students with low English self-concepts | 第54-58页 |
| ·Summary | 第58-59页 |
| 5.Conclusions | 第59-64页 |
| ·Major findings of the present study | 第59-60页 |
| ·Implications of the present study | 第60-62页 |
| ·Limitations and suggestions for future research | 第62-64页 |
| Bibliography | 第64-68页 |
| Appendix | 第68-69页 |
