| 摘要 | 第1-8页 |
| ABSTRACT | 第8-10页 |
| Index to Figures | 第10-11页 |
| Index to Tables | 第11-12页 |
| Chapter 1 Introduction | 第12-14页 |
| Chapter 2 Literature Review | 第14-27页 |
| ·Previous Studies on Infant Acquisition of Native Language at the Pre-linguistic Stage and the Linguistic Stage | 第14-25页 |
| ·Discontinuity Model | 第14页 |
| ·Continuity Model | 第14-25页 |
| ·Evidence for Continuity from Segmental Production in Infants | 第15-20页 |
| ·Evidence in Support of Continuity from Infant Pitch Perception | 第20-22页 |
| ·The Production of Tone in Early Language Development | 第22-24页 |
| ·The Production of Pitch Contours at the Babbling Stage | 第24-25页 |
| ·Aims of the Present Research | 第25-27页 |
| Chapter 3 Methodology | 第27-39页 |
| ·Data | 第27-30页 |
| ·Subjects | 第27页 |
| ·Recording Procedure and Data Collection | 第27-28页 |
| ·Data Extraction, Transcription and Analysis | 第28-29页 |
| ·The Criteria for CV Segmentation | 第29-30页 |
| ·The Conversion of FO to Relative Pitch Level | 第30-37页 |
| ·The Reason for Using the Lz-score instead of z-score | 第30-32页 |
| ·Lz-score Calculation and Pitch Curves based on the Praat Script | 第32-34页 |
| ·The Effect of Lz-score Processing | 第34-36页 |
| ·Conversion | 第36-37页 |
| ·Lz-score Praat Script Validity on Adult Testing | 第37-39页 |
| Chapter 4 Results | 第39-62页 |
| ·Analysis of Pitch Contours of the Word and Babble Vocalizations in Two Changsha Infants: LSY and AJR | 第39-51页 |
| ·Phonetic Characteristics of Infant Pitch Contours | 第39-40页 |
| ·Comparison of Level and Non-level Pitch Contours | 第40-41页 |
| ·Comparison of Minimum FO, Maximum FO, Mean Value and Standard Deviation of Pitch Contours | 第41-45页 |
| ·Comparison of Mean Pitch Level, Mean Beginning Level of Falling and Rising Contours and Mean Terminal Level of Falling and Rising Contours | 第45-49页 |
| ·The Slope of Rising and Falling Pitch Contours | 第49-51页 |
| ·Pitch Contour Types at the Babbling Stage and the Babbling—Words Stage | 第51-55页 |
| ·The Criteria for Word | 第51-52页 |
| ·Pitch Contour Types | 第52-55页 |
| ·The Pitch Contours in Babbling and Early Words | 第55-60页 |
| ·The Phonetic Characteristics of Babbling and Early Words | 第55-56页 |
| ·Percentage of Various Pitch Contours in Babbling and Words | 第56-60页 |
| ·Summary | 第60-62页 |
| Chapter 5 Discussion | 第62-66页 |
| Conclusion | 第66-68页 |
| References | 第68-71页 |
| Acknowledgements | 第71-74页 |
| 附录A 攻读学位期间所发表的学术论文目录 | 第74-75页 |
| 附录B Tables | 第75-90页 |
| 附录C Partial Lz-score Praat Script | 第90-92页 |
| 附录D 详细中文摘要 | 第92-97页 |
