| Abstract | 第1-7页 |
| 中文摘要 | 第7-11页 |
| Chapter 1 Introduction | 第11-14页 |
| ·Research background | 第11-12页 |
| ·Aim and significance of the research | 第12-13页 |
| ·An overview of the thesis | 第13-14页 |
| Chapter 2 Literature Review | 第14-33页 |
| ·Lexical chunks | 第14-22页 |
| ·Definition of lexical chunks | 第14-18页 |
| ·Taxonomy of lexical chunks | 第18-22页 |
| ·Corpus and Corpus Linguistics | 第22-26页 |
| ·Corpus | 第23-24页 |
| ·Corpus Linguistics | 第24-26页 |
| ·The Relevant Studies of Lexical Chunks Abroad and Home | 第26-30页 |
| ·The Relevant Studies of Lexical Chunks Abroad | 第26-28页 |
| ·The Relevant Studies of Lexical Chunks Home | 第28-30页 |
| ·The Relevant Studies of the Lexical Chunks based on Corpus in Writing Abroad and Home | 第30-33页 |
| ·The Relevant Studies of the Lexical Chunks based on Corpus in Writing Abroad | 第30页 |
| ·The Relevant Studies of the Lexical Chunks based on Corpus in Writing Home | 第30-33页 |
| Chapter 3 Methodology | 第33-44页 |
| ·Research aim | 第33页 |
| ·Research data | 第33-35页 |
| ·Research instrument | 第35-36页 |
| ·Research method | 第36页 |
| ·Research procedure | 第36-44页 |
| ·Principles of selecting lexical chunks | 第36-37页 |
| ·Making a word list | 第37-39页 |
| ·Withdrawing lexical chunks | 第39-42页 |
| ·Manual selection | 第42-44页 |
| Chapter 4 Results and Discussions | 第44-65页 |
| ·General features of lexical chunks in non-English majors’ and English majors’ composition | 第44-47页 |
| ·Comparison of lexical chunks in each structural type | 第47-51页 |
| ·Comparison of lexical chunks in density and richness | 第51-65页 |
| ·The density and richness of full clausal chunks in non-English major group and English major group | 第54-57页 |
| ·The density and richness of clausal constituent chunk in non-English major group and English major group | 第57-61页 |
| ·The density and richness of incomplete phrase chunks in non-English major group and English major group | 第61-65页 |
| Chapter 5 Conclusion | 第65-72页 |
| ·Major findings | 第65-67页 |
| ·Implications and suggestions | 第67-70页 |
| ·Suggestions for teaching | 第68-69页 |
| ·Suggestions for learning | 第69-70页 |
| ·Limitations of the present research | 第70页 |
| ·Suggestions for further study | 第70-72页 |
| Bibliography | 第72-76页 |
| Appendix 1 | 第76-77页 |
| Appendix 2 | 第77-78页 |
| Appendix 3 | 第78-79页 |
| Appendix 4 | 第79-80页 |
| Appendix 5 | 第80-81页 |
| Appendix 6 | 第81-82页 |
| List of tables and figures | 第82-85页 |
| Acknowledgements | 第85页 |
