| Chinese abstract | 第1-6页 |
| English abstract | 第6-11页 |
| Chapter 1 Introduction | 第11-15页 |
| ·Background | 第11-12页 |
| ·Goal and significance of the thesis | 第12-13页 |
| ·Organization of the thesis | 第13-15页 |
| Chapter 2 Web-based self-access learning | 第15-42页 |
| ·Self-access learning | 第15-16页 |
| ·Definition of self-access learning | 第15页 |
| ·Features of self-access learning | 第15-16页 |
| ·Web-based self-access learning | 第16-29页 |
| ·Definition of web-based self-access learning | 第16-17页 |
| ·Advantages and disadvantages of web-based self-access learning environment | 第17-20页 |
| ·Importance of web-based self-access learning | 第20-23页 |
| ·College English curriculum requirements | 第20-22页 |
| ·Need of fast-paced society | 第22-23页 |
| ·Features of web-based self-access learning | 第23-29页 |
| ·Learners’role | 第24-26页 |
| ·Teachers’role | 第26-28页 |
| ·Technical skills | 第28-29页 |
| ·Previous study of WSLS | 第29-37页 |
| ·Previous study of WSLS at home | 第29-35页 |
| ·Previous study of WSLS abroad | 第35-37页 |
| ·Theoretical foundation of self-access learning | 第37-42页 |
| ·Constructivism | 第37-38页 |
| ·Situated cognition theory | 第38-40页 |
| ·Humanism | 第40-42页 |
| Chapter 3 Present situation of non-English learners | 第42-52页 |
| ·Macroscopic present situation | 第42-47页 |
| ·Present situation of non-English undergraduates | 第42-43页 |
| ·Present situation of non-English postgraduates | 第43-44页 |
| ·Differences of English teaching between postgraduates and undergraduates | 第44-47页 |
| ·Teaching purpose | 第45页 |
| ·Learning strategy and acquisition ability | 第45-47页 |
| ·Course arrangement | 第47页 |
| ·Need analysis of postgraduates’English study | 第47-49页 |
| ·Personal need | 第48-49页 |
| ·Social need | 第49页 |
| ·Necessity of web-based self-access learning for postgraduates | 第49-52页 |
| Chapter 4 Comparison & Analysis | 第52-77页 |
| ·Introduction of the WSLS of HIT | 第52-59页 |
| ·Introduction of the WSLS of OU | 第59-61页 |
| ·Comparisons | 第61-64页 |
| ·Differences between the two systems | 第61-63页 |
| ·Objects | 第61-62页 |
| ·Construction | 第62页 |
| ·Content | 第62-63页 |
| ·Materials | 第63页 |
| ·Similarities of the two systems | 第63-64页 |
| ·Analysis of the WSLSs in HIT and OU | 第64-69页 |
| ·Advantages of the two systems | 第64-68页 |
| ·Advantages of the WSLS of HIT | 第64-67页 |
| ·Advantages of the WSLS of OU | 第67-68页 |
| ·Disadvantages of the two systems | 第68-69页 |
| ·Disadvantages of the WSLS of HIT | 第68-69页 |
| ·Disadvantages of the WSLS of OU | 第69页 |
| ·Specific suggestions to improve the WSLS of HIT | 第69-74页 |
| ·Analysis of the WSLS of HIT | 第70-72页 |
| ·Specific suggestions to improve the WSLS of HIT | 第72-74页 |
| ·Common deficiencies of WSLSs in China | 第74-77页 |
| Chapter 5 Measures to improve postgraduates’English learning | 第77-87页 |
| ·How to build a nationwide WSLS | 第77-79页 |
| ·How to manage and improve WSLS | 第79-84页 |
| ·On the management of the learning system | 第79-81页 |
| ·Technical management | 第79-80页 |
| ·Repository management | 第80-81页 |
| ·On the improvement of the learning system | 第81-84页 |
| ·Perfect the external environment of the web-based self-access English learning | 第81页 |
| ·Improve the comprehensive abilities of both teachers and students | 第81-84页 |
| ·Realize the organic combination of web-based self-access English learning and the traditional teaching mode | 第84页 |
| ·How to use WSLS | 第84-87页 |
| Chapter 6 Conclusion | 第87-91页 |
| ·Summary and implications | 第87-88页 |
| ·Limitations and suggestions for further study | 第88-91页 |
| References | 第91-95页 |
| Appendix | 第95-104页 |
| Paper Published during Study | 第104-106页 |
| Acknowledgements | 第106页 |