| Acknowledgments | 第1-5页 |
| Academic Achievements | 第5-6页 |
| 摘要 | 第6-7页 |
| Abstract | 第7-13页 |
| Chapter One Introduction | 第13-16页 |
| ·Significance of the Present Research | 第13-14页 |
| ·Research Questions | 第14页 |
| ·Structure of the Thesis | 第14-16页 |
| Chapter Two Literature Review | 第16-28页 |
| ·Researches on Phonological Acquisition | 第16-23页 |
| ·Researches Abroad | 第16-19页 |
| ·Domestic Researches | 第19-23页 |
| ·Researches on Vowel Segmental Acquisition | 第23-26页 |
| ·Summary | 第26-28页 |
| Chapter Three Methodology | 第28-31页 |
| ·Participants | 第28-29页 |
| ·Data Collection Procedures | 第29-31页 |
| ·Recordings | 第29页 |
| ·Interviews | 第29-31页 |
| Chapter Four Data Analysis and Results | 第31-48页 |
| ·Results of Vowel Segmental Acquisition Phenomenon | 第31-46页 |
| ·Overall Features for Vowel Segments | 第32-33页 |
| ·Results of [ :] and [a] Acquisition Phenomenon | 第33-35页 |
| ·Results of [i:] and [i] Acquisition Phenomenon | 第35-36页 |
| ·Results of [e] and [E] Acquisition Phenomenon | 第36-38页 |
| ·Results of [ ], [a] and [E] Acquisition Phenomenon | 第38-39页 |
| ·Results of [ :] and [ ] Acquisition Phenomenon | 第39-41页 |
| ·Results of [u:] and [ ] Acquisition Phenomenon | 第41-42页 |
| ·Results of [ ] and [u] Acquisition Phenomenon | 第42-43页 |
| ·Results of [ :] and [ ] Acquisition Phenomenon | 第43-45页 |
| ·Results of [ ] and [a] Acquisition Phenomenon | 第45-46页 |
| ·Results of Interviews | 第46-47页 |
| ·Summary | 第47-48页 |
| Chapter Five Discussion | 第48-52页 |
| ·Current Situation of Students’ Vowel Acquisition | 第48-49页 |
| ·Reasons | 第49-50页 |
| ·Solutions | 第50-52页 |
| Chapter Six Conclusion | 第52-56页 |
| ·Findings of the Study | 第52-54页 |
| ·Implications | 第54-55页 |
| ·Limitation of the Study and Suggestions for Further Research | 第55-56页 |
| References | 第56-61页 |
| Appendix Interview Questions | 第61页 |
