| ABSTRACT | 第3-5页 |
| 摘要 | 第6-8页 |
| CONTENTS | 第8-10页 |
| List of Tables | 第10-11页 |
| Chapter One Introduction | 第11-15页 |
| 1.1 Structure of the thesis | 第11页 |
| 1.2 Purpose and significance of the study | 第11-15页 |
| Chapter Two Literature Review | 第15-37页 |
| 2.1 Definition of formulaic language | 第15-21页 |
| 2.1.1 Terminology and definition | 第15-19页 |
| 2.1.2 Demarcation and identification of the target formulaic language | 第19-20页 |
| 2.1.3 Working definition of frequently used formulaic language | 第20-21页 |
| 2.2 Categorization of formulaic language | 第21-24页 |
| 2.2.1 Classification | 第22-23页 |
| 2.2.2 Categorization of frequently used formulaic language in this study | 第23-24页 |
| 2.3 Theoretical framework | 第24-30页 |
| 2.3.1 Dual model of language use | 第24-26页 |
| 2.3.2 Dual model of language processing | 第26-28页 |
| 2.3.3 Dual model of language acquisition | 第28-30页 |
| 2.4 Previous studies abroad | 第30-33页 |
| 2.5 Previous studies at home | 第33-37页 |
| Chapter Three Methodology | 第37-49页 |
| 3.1 Research questions | 第37页 |
| 3.2 Research methods | 第37-39页 |
| 3.3 Research procedure | 第39-46页 |
| 3.3.1 Preparation for quantitative research | 第39-41页 |
| 3.3.2 Preparation for qualitative research | 第41页 |
| 3.3.3 Brief introduction of the software packages used | 第41-43页 |
| 3.3.4 Retrieval of the target formulaic language | 第43-44页 |
| 3.3.5 Identification of the retrieved formulaic language | 第44-45页 |
| 3.3.6 Categorization of the identified formulaic language | 第45-46页 |
| 3.4 Data processing and analysis | 第46-49页 |
| Chapter Four Results and Discussion | 第49-65页 |
| 4.1 General characteristics of frequently used formulaic language | 第49-53页 |
| 4.1.1 Quantity of the target formulaic language | 第49-50页 |
| 4.1.2 Variety of the target formulaic language | 第50-51页 |
| 4.1.3 Frequency of the target formulaic language | 第51-52页 |
| 4.1.4 Distributions of each category of the target formulaic language | 第52-53页 |
| 4.2 Output characteristics of the target formulaic language between high-level and low-level compositions | 第53-60页 |
| 4.2.1 Quantity differences between two levels of compositions | 第53-54页 |
| 4.2.2 Variety differences between two levels of compositions | 第54-55页 |
| 4.2.3 Frequency differences between two levels of compositions | 第55-57页 |
| 4.2.4 Category distribution differences between two levels of compositions47 | 第57-60页 |
| 4.3 List of the most frequently used formulaic language | 第60-62页 |
| 4.4 Reasons resulted to the most frequently used formulaic language | 第62-65页 |
| Chapter Five Major Findings and Implications | 第65-71页 |
| 5.1 Major findings | 第65-67页 |
| 5.2 Pedagogical implications | 第67-71页 |
| Chapter Six Conclusion | 第71-75页 |
| 6.1 Summary | 第71-72页 |
| 6.2 Limitation of the study | 第72-73页 |
| 6.3 Suggestions for future research | 第73-75页 |
| BIBLIOGRAPHY | 第75-81页 |
| ACKNOWLEDGEMENTS | 第81-83页 |
| PUBLISHED PAPERS | 第83页 |
