| Chinese Abstract | 第4-5页 |
| English Abstract | 第5页 |
| Introduction | 第7-8页 |
| Part Ⅰ Literature Review | 第8-40页 |
| 1.1 Theories on constructivism | 第8-12页 |
| 1.1.1 Main views on constructivism | 第8页 |
| 1.1.2 Main representative figures | 第8-12页 |
| 1.2 Task-based language Teaching | 第12-40页 |
| 1.2.1 Definitions of tasks | 第12-13页 |
| 1.2.2 The Basic theory on Task--based Approach | 第13-16页 |
| 1.2.3 The Principles and Characteristics of TBLT | 第16-17页 |
| 1.2.4 Components of a Task | 第17-20页 |
| 1.2.5 Features of TBLT and Teacher’s roles played in the TBLT classroom | 第20-22页 |
| 1.2.6 Teaching Objectives and the Designing of TBLT | 第22-29页 |
| 1.2.7 TBLT and Communicative Language Teaching | 第29-30页 |
| 1.2.8 TBLT and Classroom Teaching Interaction | 第30-38页 |
| 1.2.9 Students Performance Assessment | 第38-40页 |
| Part Ⅱ TBLT、Constructivism and English Teaching Reform | 第40-44页 |
| Conclusions | 第44-45页 |
| Appendix | 第45-49页 |
| References | 第49-52页 |
| Acknowledgements | 第52页 |
