| Acknowledgement | 第4-5页 |
| Academic Achievements | 第5-6页 |
| 摘要 | 第6-7页 |
| Abstract | 第7-8页 |
| List of Abbreviations | 第13-14页 |
| Chapter One Introduction | 第14-18页 |
| 1.1 Background of the Study | 第14-16页 |
| 1.2 Significance of the Study | 第16-17页 |
| 1.3 Organization of the Thesis | 第17-18页 |
| Chapter Two Literature Review | 第18-28页 |
| 2.1 Concept definition | 第18-20页 |
| 2.1.1 Lexical Competence | 第18-19页 |
| 2.1.2 Lexical Knowledge vs Lexical Competence | 第19-20页 |
| 2.2 Dimensions of Lexical Competence | 第20-25页 |
| 2.2.1 Breadth Dimension | 第21-22页 |
| 2.2.2 Depth Dimension | 第22-23页 |
| 2.2.3 Precision Dimension | 第23-24页 |
| 2.2.4 Automaticity Dimension | 第24-25页 |
| 2.3 Affix Acquisition | 第25-26页 |
| 2.4 Idiom Acquisition | 第26-28页 |
| Chapter Three Research Design | 第28-31页 |
| 3.1 Research Questions | 第28页 |
| 3.2 Research Subjects | 第28-29页 |
| 3.3 Research Materials | 第29-30页 |
| 3.4 Research Instruments | 第30-31页 |
| Chapter Four Data Analysis and Discussion | 第31-48页 |
| 4.1 Order of Affixes Acquisition and Characteristics Analysis | 第31-38页 |
| 4.1.1 Prefix Acquisition Order of Three Groups | 第31-33页 |
| 4.1.2 Suffix Acquisition Order of Three Groups | 第33-35页 |
| 4.1.3 Prefix Acquisition Characteristics of Three Groups | 第35-36页 |
| 4.1.4 Suffix Acquisition characteristics of Three Groups | 第36-38页 |
| 4.2 Idioms Acquisition Order and Characteristic Analysis | 第38-48页 |
| 4.2.1 Acquisition Order of Common Verb Idioms and General Characteristics of Three Groups | 第38-40页 |
| 4.2.2 Order and Characteristic of Idioms Acquisition Involving take | 第40-42页 |
| 4.2.3 Order and Characteristic of Idioms Acquisition Involving make | 第42-44页 |
| 4.2.4 Order and Characteristic of Idioms Acquisition Involving get | 第44-45页 |
| 4.2.5 Order and Characteristic of Idioms Acquisition Involving give | 第45-46页 |
| 4.2.6 Order and Characteristic of Idioms Acquisition Involving turn | 第46-48页 |
| Chapter Five Conclusion | 第48-52页 |
| 5.1 Main Research Findings | 第48-49页 |
| 5.2 Enlightenment of Teaching | 第49-50页 |
| 5.3 Limitation of Research | 第50-51页 |
| 5.4 Suggestions of Further Research | 第51-52页 |
| References | 第52-54页 |
