| Acknowledgements | 第4-5页 |
| Abstract | 第5-6页 |
| 摘要 | 第7-13页 |
| Chapter One INTRODUCTION | 第13-17页 |
| 1.1 Research Background | 第13-14页 |
| 1.2 Research Purpose and Significance | 第14-15页 |
| 1.3 Thesis Outline | 第15-17页 |
| Chapter Two LITERATURE REVIEW | 第17-35页 |
| 2.1 Definition of Basic Concepts | 第17-21页 |
| 2.1.1 Articulatory and acoustic features of nasal consonants | 第17-19页 |
| 2.1.2 The comparison of English, Mandarin and Yuanqu dialect nasals | 第19-21页 |
| 2.2 Theoretical Basis | 第21-25页 |
| 2.2.1 Contrastive Analysis Hypothesis | 第21-23页 |
| 2.2.2 Speech Learning Model | 第23-25页 |
| 2.3 Previous Studies | 第25-33页 |
| 2.3.1 Studies on L2 speech acquisition at home and abroad | 第25-26页 |
| 2.3.2 Studies on speech perception and production | 第26-30页 |
| 2.3.3 Studies on nasals at home and abroad | 第30-33页 |
| 2.4 Problems with Previous Studies | 第33-35页 |
| Chapter Three RESEARCH METHODOLOGY | 第35-43页 |
| 3.1 Research Questions | 第35页 |
| 3.2 Research Design | 第35-37页 |
| 3.2.1 Subjects | 第35-36页 |
| 3.2.2 Materials | 第36-37页 |
| 3.3 Data Collection and Data Analysis | 第37-43页 |
| 3.3.1 Perceptive data | 第37-38页 |
| 3.3.2 Productive data | 第38-43页 |
| Chapter Four RESULTS AND DISCUSSION | 第43-61页 |
| 4.1 Perception of English Nasals by Yuanqu EFL Learners | 第43-48页 |
| 4.1.1 Overall perceptive accurate acquisition rates | 第43-44页 |
| 4.1.2 Perceptive accurate acquisition rate of each nasal in three phonetic contexts | 第44-46页 |
| 4.1.3 Typical misperceived English nasals | 第46-48页 |
| 4.2 Production of English Nasals by Yuanqu EFL Learners | 第48-57页 |
| 4.2.1 Overall productive accurate acquisition rates | 第48-50页 |
| 4.2.2 Productive accurate acquisition rate of each nasal in three phoneticcontexts | 第50-51页 |
| 4.2.3 Typical misspoken English nasals | 第51-52页 |
| 4.2.4 Acoustic analysis of English nasals | 第52-57页 |
| 4.3 Error Analysis | 第57-58页 |
| 4.4 Correlation between Production and Perception of English Nasals by YuanquEFL Learners | 第58-59页 |
| 4.5 Summary | 第59-61页 |
| Chapter Five CONCLUSION | 第61-67页 |
| 5.1 Major Findings | 第61-62页 |
| 5.2 Implications | 第62-64页 |
| 5.2.1 Theoretical implications | 第62-63页 |
| 5.2.2 Pedagogical implications | 第63-64页 |
| 5.3 Limitations and Suggestions | 第64-67页 |
| References | 第67-73页 |
| Appendices | 第73-77页 |
| Appendix Ⅰ | 第73-75页 |
| Appendix Ⅱ | 第75-77页 |
| 攻读硕士学位期间的科研成果 | 第77页 |
