| Abstract in English | 第3-4页 |
| Abstract in Chinese | 第5-9页 |
| 1. Introduction | 第9-13页 |
| 1.1 Purpose and significance of the research | 第10-11页 |
| 1.2 Organization of the research | 第11-13页 |
| 2. Literature Review | 第13-25页 |
| 2.1 Definition of lexical chunk | 第13-14页 |
| 2.2 Classification of lexical chunk | 第14-17页 |
| 2.2.1 Classification of Michael Lewis | 第14-15页 |
| 2.2.2 Classification of Nattinger & De Carrico | 第15-17页 |
| 2.3 Functions of lexical chunk in SLA | 第17-19页 |
| 2.4 Empirical study on lexical chunk and writing abroad and at home | 第19-22页 |
| 2.4.1 Empirical study on lexical chunk abroad | 第19-20页 |
| 2.4.2 Empirical study on lexical chunk at home | 第20-21页 |
| 2.4.3 Empirical study on lexical chunk and writing | 第21-22页 |
| 2.5 Recitation input of lexical chunk | 第22-25页 |
| 3. Research Design | 第25-39页 |
| 3.1 Research questions | 第25页 |
| 3.2 Research subjects | 第25-27页 |
| 3.3 Research instruments | 第27-28页 |
| 3.4 Instructional implementation in experimental class | 第28-39页 |
| 3.4.1 Recitation of lexical chunks in everyday teaching | 第28-34页 |
| 3.4.2 Training on the application of writing with lexical chunks | 第34-36页 |
| 3.4.3 A teaching sample of writing class | 第36-39页 |
| 4. Data Analysis and Discussion | 第39-53页 |
| 4.1 Analysis and discussion of the writing scores | 第39-42页 |
| 4.1.1 Results of pre-test and post-test in CC | 第39-40页 |
| 4.1.2 Results of pre-test and post-test in EC | 第40-41页 |
| 4.1.3 Result analysis of writing scores of post-test in EC and CC | 第41-42页 |
| 4.2 Analysis and discussion of the lexical chunks | 第42-48页 |
| 4.2.1 Result analysis of the number of lexical chunks | 第42-44页 |
| 4.2.2 Result analysis and discussion of types of lexical chunks | 第44-48页 |
| 4.3 Analysis and discussion of scores between experimental class and control class inpost-test | 第48-53页 |
| 4.3.1 Correlation analysis of the accuracy of lexical chunks used and the scores ofmultiple choices | 第49-50页 |
| 4.3.2 Correlation analysis of the accuracy of lexical chunks used and the scores ofcloze | 第50-51页 |
| 4.3.3 Correlation analysis of the accuracy of lexical chunks used and the scores offilling blanks | 第51-53页 |
| 5. Conclusion | 第53-57页 |
| 5.1 Major findings | 第53-54页 |
| 5.2 The revelation of experiment and teaching suggestion | 第54-56页 |
| 5.3 Research limitations | 第56-57页 |
| Bibliography | 第57-61页 |
| Appendix A | 第61-62页 |
| Appendix B | 第62-63页 |
| Acknowledgements | 第63-65页 |
| Publications | 第65页 |
