| 摘要 | 第1-6页 |
| Abstract | 第6-10页 |
| Introduction | 第10-14页 |
| Chapter One Literature Review | 第14-21页 |
| ·The Critical Period Hypothesis | 第14-17页 |
| ·The Sensitive Period Hypothesis | 第17-21页 |
| Chapter Two The Effects of Age on Second Language Acquisition | 第21-32页 |
| ·The Effects of Age on Rate of Second Language Learning | 第21-24页 |
| ·The Effects of Age on the Acquisition of Native-Like Proficiency | 第24-27页 |
| ·The Effects of Age on the Process of Second Language Acquisition | 第27-29页 |
| ·The Effects of Age on Learners' Second Language Achievement | 第29-30页 |
| ·Summary | 第30-32页 |
| Chapter Three An Empirical Study | 第32-37页 |
| ·Description of the study | 第32-35页 |
| ·Subjects | 第32-33页 |
| ·Procedure | 第33-34页 |
| ·Data Analysis | 第34-35页 |
| ·Summary | 第35-37页 |
| Chapter Four Several Explanations for the Effects of Age on Second Language Acquisition | 第37-54页 |
| ·Language Input | 第37-40页 |
| ·Cognitive Ability | 第40-44页 |
| ·Affective Factors | 第44-48页 |
| ·Neurological Factor | 第48-54页 |
| Chapter Five Respective Advantages and Disadvantages of Learners of Different Ages and Implications for FL Education | 第54-65页 |
| ·Respective Advantages and Disadvantages of Learners of Different Ages | 第54-57页 |
| ·Children (3-10 years old) | 第54-55页 |
| ·Adolescents (11-17 years old) | 第55页 |
| ·Adults (more than 18 years old) | 第55-57页 |
| ·Implications for FL Education | 第57-65页 |
| ·Implications for the Teaching of Children | 第57-59页 |
| ·Implications for the Teaching of Adults | 第59-61页 |
| ·Implications for Policy-makers and Administrators | 第61-65页 |
| Conclusion | 第65-67页 |
| Bibliography | 第67-71页 |
| Acknowledgements | 第71-72页 |
| 湖南师范大学学位论文原创性声明 | 第72页 |
