| Acknowledgements | 第1-4页 |
| Abstract | 第4-6页 |
| 摘要 | 第6-9页 |
| List of Tables | 第9-11页 |
| Chapter One Introduction | 第11-14页 |
| Chapter Two Literature Review | 第14-33页 |
| ·The Study of Lexical Chunks | 第14-26页 |
| ·The terminology and definition of lexical chunks | 第14-17页 |
| ·Categories of lexical chunks | 第17-23页 |
| ·Functions of lexical chunks | 第23-26页 |
| ·A Cognitive View of Language | 第26-29页 |
| ·The unit of language stored in memory and retrieved in spoken discourse | 第26-27页 |
| ·The process of language in production and interpretation and learning | 第27-29页 |
| ·Lexical Chunks and Language Teaching and Learning | 第29-33页 |
| ·Approaches to teaching formulaic sequences | 第29-30页 |
| ·The importance of including lexical chunks in EFL teaching of writing | 第30-33页 |
| ·Theoretical stances--two major approaches among studies of written discourse | 第30-31页 |
| ·The need to integrate lexical chunks in EFL teaching | 第31-33页 |
| Chapter Three Methodology | 第33-37页 |
| ·Research Questions | 第33页 |
| ·Subjects | 第33-34页 |
| ·Instrument | 第34-35页 |
| ·Data Collection and Analysis | 第35-37页 |
| Chapter Four Results and Discussion | 第37-56页 |
| ·Results | 第37-49页 |
| ·Correlation between lexical chunks and composition scores | 第37-39页 |
| ·Comparison of the lexical chunks used in two different groups | 第39-43页 |
| ·Descriptive statistics of erroneous lexical chunks in the compositions | 第43-46页 |
| ·Correlation between the lexical chunks and erroneous ones in the compositions | 第46-47页 |
| ·Typical examples of misused lexical chunks of each category selected from the compositions | 第47-49页 |
| ·Discussion | 第49-56页 |
| ·Relationship between the use of lexical chunks and the quality of the compositions | 第49-50页 |
| ·A comparison of the use of lexical chunks between high score compositions and low score compositions | 第50-52页 |
| ·Relationship between the lexical chunks used in the compositions and those are misused | 第52-53页 |
| ·General features of the use of lexical chunks | 第53-56页 |
| Chapter Five Pedagogical Implications | 第56-63页 |
| ·Criteria to Grade Compositions | 第56页 |
| ·The Advantages of Using Lexical Chunks in Writing | 第56-57页 |
| ·Suggestions for Teaching and Learning Lexical Chunks | 第57-61页 |
| ·Implications of the Process of Language Development in Acquisition | 第61-63页 |
| Chapter Six Conclusion | 第63-66页 |
| Bibliography | 第66-68页 |
| Appendices | 第68-80页 |
| Appendix Ⅰ:Classification of Lexical Chunks in Two Sample Compositions | 第68-70页 |
| Appendix Ⅱ:Raw Scores of the 100 Compositions Given by the Three Teachers and the Mean Scores | 第70-73页 |
| Appendix Ⅲ:The Scores of the 60 Sample Compositions Given by the Three Teachers and Mean Scores | 第73-75页 |
| Appendix Ⅳ:The Number of Four Categories of Lexical Chunks and the Total Number of Lexical Chunks Used in the 60 Sample Compositions | 第75-77页 |
| Appendix Ⅴ:The Erroneous Lexical Chunks of the Four Categories and the Total Number of Erroneous Lexical Chunks Identified in the 60 Sample Compositions | 第77-79页 |
| Appendix Ⅵ:Published Works | 第79-80页 |
