| 摘要 | 第1-5页 |
| Abstract | 第5-7页 |
| 目录 | 第7-9页 |
| Chapter one Introduction | 第9-13页 |
| ·Research Background | 第9-10页 |
| ·Purpose and Signiifcance | 第10-11页 |
| ·Overall Structure | 第11-13页 |
| Chapter two Literature Review | 第13-19页 |
| ·Background of language and economics | 第13-15页 |
| ·Main Theories Concerned | 第15-19页 |
| ·Language as Human Capital | 第15-16页 |
| ·Language as Public Goods | 第16页 |
| ·Network Externality of Language | 第16-17页 |
| ·Q Value Theory | 第17-19页 |
| Chapter Three Language Effects on Working Adults | 第19-28页 |
| ·Present Situation of Multilingual Speakers | 第19-20页 |
| ·Research Study on the adult trainees | 第20-26页 |
| ·Economic value of language on individuals | 第20-23页 |
| ·Problems of the Individual Investment | 第23-26页 |
| ·Suggestions for Individuals | 第26-28页 |
| Chapter Four Language Effects on Training Institutions | 第28-38页 |
| ·Present Situation of Language Training Industry | 第28-29页 |
| ·Case Study of Language Training Institution | 第29-35页 |
| ·Economic Value of language on Training Institutions | 第29-31页 |
| ·Problems of the Institutions Development | 第31-33页 |
| ·Causes of the Problems | 第33-35页 |
| ·Suggestions for the Language Training Institutions | 第35-38页 |
| Chapter Five Conclusion | 第38-42页 |
| ·Major Findings | 第38-40页 |
| ·Research Limitations | 第40-41页 |
| ·Suggestions for Future Research | 第41-42页 |
| Acknowledgements | 第42-43页 |
| Bibliography | 第43-46页 |
| Appendix Questionnaires | 第46-49页 |
