| Acknowledgements | 第1-6页 |
| Abstract | 第6-8页 |
| 摘要 | 第8-11页 |
| Chapter I. Introduction | 第11-15页 |
| ·Definition of second language acquisition | 第11-12页 |
| ·Current situation of second learning second language | 第12-15页 |
| Chapter II. Literature Review | 第15-27页 |
| ·Critical period hypothesis | 第15页 |
| ·Critical period in first language acquisition | 第15-17页 |
| ·Critical period in second language acquisition | 第17-19页 |
| ·Age factor in second language acquisition | 第19-20页 |
| ·Studies at home and abroad | 第20-27页 |
| ·Studies abroad | 第20-24页 |
| ·Studies at home | 第24-27页 |
| Chapter III. Major Theories on Age Factor Affecting Second Language Acquisition | 第27-32页 |
| ·Brain plasticity theory | 第27页 |
| ·Cognitive style | 第27-28页 |
| ·Input hypothesis | 第28-29页 |
| ·Affective filter hypothesis | 第29-32页 |
| Chapter Ⅳ Research Design | 第32-41页 |
| ·Research questions | 第32页 |
| ·Subjects | 第32-33页 |
| ·Data collection | 第33-36页 |
| ·Data from the questionnaire | 第35页 |
| ·Data from the test of English grammar | 第35-36页 |
| ·Data from the test of English reading comprehension | 第36页 |
| ·Data from the test of English writing | 第36页 |
| ·Data analysis | 第36-39页 |
| ·Data analysis of test of English grammar | 第37页 |
| ·Data analysis of test of English reading comprehension | 第37-38页 |
| ·Data analysis of test of English writing | 第38-39页 |
| ·Overall comparison of the mean scores of the three tests | 第39页 |
| ·Findings | 第39-41页 |
| Chapter Ⅴ Discussion on the Major Problems Existing and Suggestions for Solving Them | 第41-56页 |
| ·Lacking professional faculty | 第41-45页 |
| ·Problems increasing the teacher number | 第41-43页 |
| ·Countermeasures to the problems increasing teacher number | 第43-45页 |
| ·Solving the problems concerning with students’questions | 第45-49页 |
| ·Problems relating to student number | 第47-48页 |
| ·Measures for solving the problems relating to student number | 第48-49页 |
| ·Choosing suitable teaching materials | 第49-52页 |
| ·Establishing a proper evaluating method | 第52-55页 |
| ·Limitations | 第55-56页 |
| Chapter VI. Conclusion | 第56-57页 |
| Bibliography | 第57-61页 |
| Appendix I | 第61-62页 |
| Appendix II | 第62-65页 |
| Appendix III | 第65-71页 |
| Appendix IV | 第71-72页 |
| Papers Published during MA Program | 第72页 |
