| Acknowledgements | 第5-6页 |
| 摘要 | 第6-7页 |
| Abstract | 第7-8页 |
| Part one Introduction | 第11-15页 |
| 1.1 Background | 第11-13页 |
| 1.2 Significance of the study | 第13-14页 |
| 1.3 Organization of the thesis | 第14-15页 |
| Part Two Literature Review | 第15-25页 |
| 2.1 Overall review about lexical chunk | 第15-18页 |
| 2.1.1 Definitions of lexical chunk | 第15-16页 |
| 2.1.2 Classifications of Lexical Chunk | 第16-18页 |
| 2.2 Lexical chunks and second language acquisition | 第18-20页 |
| 2.3 The relationship between the use of lexical chunks and writing | 第20-25页 |
| 2.3.1 The existing situation of university English writing | 第20-21页 |
| 2.3.2 The function of lexical chunks in English writing | 第21-22页 |
| 2.3.3 Studies about the relationship between the use of lexical chunks andwriting | 第22-25页 |
| Part Three Methodology | 第25-27页 |
| 3.1 Research questions | 第25页 |
| 3.2 Subjects | 第25页 |
| 3.3 Procedures | 第25-26页 |
| 3.4 Data collection | 第26-27页 |
| Part Four Results and Discussion | 第27-38页 |
| 4.1 General characteristics of lexical chunks used by non-English majorgraduates | 第27-29页 |
| 4.2 Comparison on the four types of lexical chunks in two groups | 第29-34页 |
| 4.2.1 Analysis of lexical chunks used by group H and Group L | 第29-30页 |
| 4.2.2 Comparison of the same type of lexical chunks in two groups | 第30-34页 |
| 4.3 Correlation between lexical chunks and writing grade | 第34-38页 |
| Part Five Conclusion | 第38-44页 |
| 5.1 Major findings | 第38-40页 |
| 5.2 Implications | 第40-42页 |
| 5.3 Limitations and suggestions for further research | 第42-44页 |
| Bibliography | 第44-47页 |
