| Abstract | 第1-5页 |
| 内容摘要 | 第5-7页 |
| Table of Contents | 第7-11页 |
| Abbreviations in this Thesis | 第11-12页 |
| A List of Figures and Tables | 第12-15页 |
| Chapter One Introduction | 第15-18页 |
| ·Overview | 第15页 |
| ·Purpose of the Study | 第15页 |
| ·Necessity of the Study | 第15-16页 |
| ·Significance of the Study | 第16页 |
| ·Organization of the Thesis | 第16-18页 |
| Chapter Two Literature Review | 第18-29页 |
| ·Conception of Lexical Chunks | 第18-21页 |
| ·Tentative Operational Definition of Lexical Chunks | 第18-20页 |
| ·Classification of Lexical Chunks | 第20-21页 |
| ·Functions of Lexical Chunks | 第21-22页 |
| ·Easing the Burden of Language Processing | 第21页 |
| ·Facilitating the Language Production | 第21-22页 |
| ·Demonstrating Pedagogical Significance | 第22页 |
| ·Previous Studies on Lexical Chunk from Different Perspectives | 第22-28页 |
| ·Lexical Chunks in Corpus Linguistics | 第22-24页 |
| ·Lexical Chunks in Psycholinguistics | 第24-26页 |
| ·Lexical Chunks in Language Acquisition | 第26-28页 |
| ·Related Empirical Studies on Lexical Chunks | 第28-29页 |
| Chapter Three Methodology | 第29-58页 |
| ·Research Questions | 第29页 |
| ·Corpus Used | 第29-30页 |
| ·Instruments Used | 第30-31页 |
| ·Data Collection | 第31-58页 |
| ·Identification of Lexical Chunks in CLEC-ST3 and -ST4 | 第31-35页 |
| ·Categorizing the Qualified Lexical Chunks | 第35-58页 |
| Chapter Four Data analysis | 第58-94页 |
| ·Contrast between CET-4 and CET-6 Takers in the Use of Lexical Chunks | 第58-68页 |
| ·Contrast between ST3 and ST4 in Terms of Different Mean Frequency of Two-to Six-word Chunks Groups | 第58-66页 |
| ·Respectively Computing the Sums of Frequency of All the Two-to Six-word Chunks Groups in CLEC-ST3,-ST4 | 第58页 |
| ·The Contrast between ST3 and ST4 in Terms of the Different Mean Frequency of Two-to Six-word Chunks Groups | 第58-66页 |
| ·Two-word Chunks | 第59-60页 |
| ·Three-word Chunks | 第60-61页 |
| ·Four-word Chunks | 第61-63页 |
| ·Five-word Chunks | 第63-64页 |
| ·Six-word Chunks | 第64-66页 |
| ·Contrast between CET-4 and -6 Takers in Terms of the Two Different Mean Frequency of Each Test-taker | 第66-67页 |
| ·Contrast of the Ratio of ST3 and ST4 | 第67-68页 |
| ·Contrast between CET-4 and CET-6 Takers in the Use of Lexical Chunks in Terms of the Three Fundamental Categories | 第68-87页 |
| ·Respectively Computing the Sums of Frequency of All the Two-to Six-word Chunks Group in the Three Fundamental Categories in CLEC-ST3 and-ST4 | 第68页 |
| ·Respectively Computing the Sums of Frequency of All the Two-to Six-word Chunks Group in the Three Fundamental Categories in CLEC-ST3 | 第68页 |
| ·Respectively Computing the Sums of Frequency of All the Two-to Six-word Chunks Group in the Three Fundamental Categories in CLEC-ST4 | 第68页 |
| ·Contrast of the Sums of Frequency of All the Two-to Six-word Chunks Group in the Same Category between ST3 and ST4 | 第68-87页 |
| ·Two-word Chunks | 第69-72页 |
| ·Three-word Chunks | 第72-76页 |
| ·Four-word Chunks | 第76-80页 |
| ·Five-word Chunks | 第80-83页 |
| ·Six-word Chunks | 第83-87页 |
| ·Contrast between CLEC-ST3 and ST4 in the Use of Lexical Chunks in Terms of the Sub-categories of the Three Fundamental Categories | 第87-94页 |
| ·Respectively Computing the Proportion of the Seven Sub-categories of VP-based Chunks in CLEC-ST3 and-ST4 | 第87-90页 |
| ·Respectively Computing the Proportion of the Five Sub-categories of Dependent Clause Chunks in CLEC-ST3,-ST4 | 第90-91页 |
| ·Respectively Computing the Proportion of the Five Sub-categories of NP/PP-based Chunks in CLEC-ST3 and -ST4 | 第91-94页 |
| Chapter Five Discussion | 第94-104页 |
| ·General Characteristics | 第94-96页 |
| ·Specific Characteristics | 第96-104页 |
| ·Three Fundamental Categories | 第96-97页 |
| ·Sub-categories of the Three Fundamental Ones | 第97-104页 |
| ·VP-based Two-to Six-word Chunks across Sub-categories | 第97-99页 |
| ·DC-based Two-to Six-word Chunks across Sub-categories | 第99-101页 |
| ·NP/PP-based Two-to Six-word Chunks across Sub-categories | 第101-104页 |
| Chapter Six Conclusions, Implications and Limitations | 第104-110页 |
| ·Conclusions | 第104-108页 |
| ·General Characteristics | 第104页 |
| ·Specific Characteristics | 第104-108页 |
| ·Features of Three Fundamental Categories | 第104-105页 |
| ·Features of Sub-categories | 第105-108页 |
| ·VP-based Two-to Six-word Chunks across Sub-categories | 第105-106页 |
| ·DC-based Two-to Six-word Chunks across Sub-categories | 第106-107页 |
| ·NP/PP-based Two-to Six-word Chunks across Sub-categories | 第107-108页 |
| ·Implications for Writing Teaching | 第108页 |
| ·Limitations of the Research | 第108-109页 |
| ·Suggestions for Future Researches | 第109-110页 |
| Bibliography | 第110-114页 |
| Appendix Ⅰ Some Related Tables | 第114-118页 |
| Appendix Ⅱ Qualified Lexical Chunks by Hand in ST3 and ST4 | 第118-120页 |
| Appendix Ⅲ Fundamental Categories and Sub-categories | 第120-150页 |
