| ACKNOWLEDGEMENTS | 第6-7页 |
| ABSTRACT | 第7页 |
| 摘要 | 第8-11页 |
| CHAPTER Ⅰ INTRODUCTION | 第11-13页 |
| 1.1 Background of the Research | 第11页 |
| 1.2 Significance of the Present Study | 第11-12页 |
| 1.3 General Organization of the Thesis | 第12-13页 |
| CHAPTER Ⅱ LITERATURE REVIEW | 第13-31页 |
| 2.1 The Definition of Lexical Chunks | 第13-16页 |
| 2.2 The Classification of Lexical Chunks | 第16-20页 |
| 2.3 The Functions of Lexical Chunks | 第20-24页 |
| 2.3.1 Categorization of lexical chunks’ functions | 第20-21页 |
| 2.3.2 Functions of Lexical Chunks | 第21-23页 |
| 2.3.3 Lexical Chunks in Second Language Acquisition | 第23-24页 |
| 2.4 The Effect of Lexical Chunks on Speech Discourse and Writing Discourse | 第24-27页 |
| 2.4.1 The Effect of Lexical Chunks on Oral English | 第24-26页 |
| 2.4.2 The Effect of Lexical Chunks on English writing | 第26-27页 |
| 2.5 Brief Introduction to the Studies Abroad and at Home | 第27-31页 |
| 2.5.1 The Studies Abroad | 第27-29页 |
| 2.5.2 The Studies at Home | 第29-31页 |
| CHAPTER Ⅲ METHODOLOGY | 第31-36页 |
| 3.1 Hypothesis | 第31页 |
| 3.2 Participants | 第31-32页 |
| 3.3 Design of the Experiment | 第32-36页 |
| 3.3.1 Oral Experiment | 第32-34页 |
| 3.3.1.1 Instruments | 第32页 |
| 3.3.1.2 Data Collection | 第32-33页 |
| 3.3.1.3 Data Analysis | 第33-34页 |
| 3.3.2 Writing Experiment | 第34-36页 |
| 3.3.2.1 Instruments | 第34页 |
| 3.3.2.2 Data Collection | 第34-35页 |
| 3.3.2.3 Data Analysis | 第35-36页 |
| CHAPTER Ⅳ RESULTS AND DISCUSSION | 第36-56页 |
| 4.1. Normality Tests of Speaking and Writing Achievements | 第36-40页 |
| 4.1.1 Case Processing Summary of Speaking and Writing Performances | 第36页 |
| 4.1.2 Descriptive of Writing and Speaking Performance | 第36-40页 |
| 4.2 Use of Lexical Chunks in the Speaking and Writing | 第40-42页 |
| 4.2.1 Use of Lexical Chunks in the Speaking | 第40-41页 |
| 4.2.2 Use of Lexical Chunks in the Writing | 第41-42页 |
| 4.3 Language Accuracy in Speaking and Writing | 第42-43页 |
| 4.4 Regression Analysis in Speaking and Writing Performances | 第43-51页 |
| 4.4.1 Linear Regression in Speaking Performance | 第43-46页 |
| 4.4.2 Linear Regression in Writing Performance | 第46-51页 |
| 4.5 Pearson Correlation Analysis of Speaking and Writing Performance | 第51-56页 |
| CHAPTER Ⅴ CONCLUSION | 第56-66页 |
| 5.1 Main Findings | 第56-60页 |
| 5.1.1 The Relation between Grammar and Speaking and Writing | 第56-57页 |
| 5.1.2 The Relationship Between Lexical Chunks and Speaking and Writing | 第57-59页 |
| 5.1.3 The Relationship between Speaking Achievement and Writing Achievement | 第59-60页 |
| 5.2 Implications | 第60-63页 |
| 5.3 Limitations of the Research | 第63-65页 |
| 5.4 Suggestions for the Future Research | 第65-66页 |
| BIBLIOGRAPHY | 第66-69页 |
| APPENDIX 1 | 第69-70页 |
| APPENDIX 2 | 第70页 |
