| Abstract | 第4页 |
| 摘要 | 第5-8页 |
| Chapter One Introduction | 第8-12页 |
| 1.1 Aims of the research | 第8-10页 |
| 1.2 Significance of the research | 第10-11页 |
| 1.3 Organization of the thesis | 第11-12页 |
| Chapter Two Literature Review | 第12-21页 |
| 2.1 Related studies abroad and in China | 第12-15页 |
| 2.1.1 Related studies of lexical chunks abroad | 第12-14页 |
| 2.1.2 Related studies of lexical chunks in China | 第14-15页 |
| 2.2 The studies of English writing | 第15-19页 |
| 2.2.1 Writing and the existing writing teaching models | 第15-17页 |
| 2.2.2 The analysis of current situation for middle school English writing | 第17-19页 |
| 2.3 The studies of lexical chunks in writing | 第19-21页 |
| Chapter Three The Theoretical Foudation of the Study | 第21-30页 |
| 3.1 Brief introduction of lexical chunks | 第21-24页 |
| 3.1.1 The definition of the lexical chunks | 第21-22页 |
| 3.1.2 The classification of lexical chunks | 第22-23页 |
| 3.1.3 The functions of lexical chunks | 第23-24页 |
| 3.2 The theoretical basis of lexical chunks | 第24-27页 |
| 3.2.1 Cognitive and psychological basis of lexical chunks | 第24-25页 |
| 3.2.2 Corpus linguistics basis of lexical chunks | 第25-26页 |
| 3.2.3 Language acquisition foundation of lexical chunks | 第26-27页 |
| 3.3 Lexical chunks and language output | 第27-30页 |
| Chapter Four Methodology | 第30-44页 |
| 4.1 Research questions | 第30页 |
| 4.2 Research subjects | 第30-31页 |
| 4.3 Research Instruments | 第31-33页 |
| 4.3.1 Questionnaire | 第31-32页 |
| 4.3.2 Experiment | 第32-33页 |
| 4.3.3 Interview | 第33页 |
| 4.4 A writing teaching model based on lexical chunks and sample lesson plan | 第33-43页 |
| 4.4.1 The stage of inputting lexical chunks | 第34-38页 |
| 4.4.2 The stage of outputting lexical chunks | 第38-42页 |
| 4.4.3 The stage of chunks consolidation | 第42-43页 |
| 4.5 The teaching procedures in CC | 第43-44页 |
| Chapter Five Data Analysis and Discussion | 第44-56页 |
| 5.1 The analysis of the questionnaire results | 第44-46页 |
| 5.2 The analysis of the experiment results | 第46-51页 |
| 5.3 The analysis of interview | 第51-52页 |
| 5.4 Discussion | 第52-56页 |
| 5.4.1 The effects of lexical chunks on students in different writing scores | 第53-54页 |
| 5.4.2 The relation between lexical chunks and students’ writing interest | 第54-56页 |
| Chapter Six Conclusion | 第56-61页 |
| 6.1 Major findings | 第56-57页 |
| 6.2 Pedagogical implications for English writing teaching | 第57-59页 |
| 6.3 Limitations of the study and further directions | 第59-61页 |
| Bibliography | 第61-66页 |
| Appendix Ⅰ: Questionnaire | 第66-68页 |
| Appendix Ⅱ: Criteria | 第68-70页 |
| Appendix Ⅲ: Written pre-test | 第70-71页 |
| Appendix Ⅳ：Written middle-test | 第71-72页 |
| Appendix Ⅴ：Written post-test | 第72-73页 |
| Appendix Ⅵ: Questions of the Interview | 第73-74页 |
| Acknowledgements | 第74页 |
