| Abstract | 第1-8页 |
| 摘要 | 第8-9页 |
| List of Abbreviations | 第9-10页 |
| List of Figures and Tables | 第10-11页 |
| Chapter 1 Introduction | 第11-15页 |
| ·The Background of This Study | 第11-12页 |
| ·The Significance of This Study | 第12-13页 |
| ·The Objectives of This Study | 第13页 |
| ·Structure of the Thesis | 第13-15页 |
| Chapter 2 Literature Review | 第15-23页 |
| ·The Relevant Studies of Lexical Chunks Abroad and Home | 第15-19页 |
| ·The Relevant Studies of Lexical Chunks Abroad | 第15-17页 |
| ·The Relevant Studies of Lexical Chunks Home | 第17-19页 |
| ·The Relevant Studies of Lexical Chunks Based on Corpus in Writing Abroad and Home | 第19-21页 |
| ·The Relevant Studies of Lexical Chunks Based on Corpus in Writing Abroad | 第19-20页 |
| ·The Relevant Studies of Lexical Chunks Based on Corpus in Writing Home | 第20-21页 |
| ·Comments on Advantages and Disadvantages of Previous Study | 第21-23页 |
| Chapter 3 Theoretical Framework | 第23-31页 |
| ·Lexical Chunks Theory | 第23-25页 |
| ·The Definition of Lexical Chunks | 第23-24页 |
| ·The Classifications of Lexical Chunks | 第24-25页 |
| ·The Functions of Lexical Chunks | 第25页 |
| ·Corpus and Corpus Linguistics | 第25-28页 |
| ·The Definition and Characteristics of Corpus | 第26页 |
| ·The Corpus Linguistics | 第26-28页 |
| ·Interlanguage | 第28-31页 |
| ·The Characteristics and Causes of Interlanguage | 第29页 |
| ·The Development Stages of Interlanguage | 第29-31页 |
| Chapter 4 Research Methodology | 第31-40页 |
| ·Research Questions | 第31页 |
| ·Samples | 第31-32页 |
| ·Instruments | 第32-34页 |
| ·Corpora | 第32-33页 |
| ·AntConc | 第33-34页 |
| ·Research Procedures | 第34-38页 |
| ·The Capacity of Samples and Corpus | 第34-35页 |
| ·The Length and Frequency of Lexical Chunks | 第35页 |
| ·Software Extraction | 第35-38页 |
| ·Manual Filtering | 第38页 |
| ·Data Collection and Analysis | 第38-40页 |
| Chapter 5 Data Analysis and Discussion in COLEC and LOCNESS | 第40-56页 |
| ·Distributions of Lexical Chunks in COLEC and LOCNESS | 第40-44页 |
| ·Numbers and Occurrence Frequencies of Lexical Chunks in COLEC and LOCNESS | 第40-42页 |
| ·Numbers and Occurrence Frequencies of Each Structure Category in COLEC and LOCNESS | 第42-44页 |
| ·Pragmatic Functions of Lexical Chunks in Each Structure Category in COLEC and LOCNESS | 第44-56页 |
| ·Full Clausal Chunks and Their Pragmatic Functions in COLEC and LOCNESS | 第44-47页 |
| ·Clause Constituents and Their Pragmatic Functions in COLEC and LOCNESS | 第47-53页 |
| ·Incomplete Phrases and Their Pragmatic Functions in COLEC and LOCNESS | 第53-56页 |
| Chapter 6 Conclusions | 第56-61页 |
| ·Major Findings | 第56-57页 |
| ·Implications and Suggestions | 第57-59页 |
| ·Limitations of the Present Study | 第59-61页 |
| References | 第61-68页 |
| Appendix 1 The Software Specific Operational Steps of Extracting the Lexical Chunks | 第68-71页 |
| Appendix 2 The Basic Information in LOCNESS | 第71-74页 |
| Appendix 3 The 65 Most Frequently Occurring Three-word Chunks in COLEC | 第74-76页 |
| Appendix 4 The 65 Most Frequently Occurring Three-word Chunks in LOCNESS | 第76-78页 |
| Acknowledgements | 第78页 |
