| 摘要 | 第1-6页 |
| Abstract | 第6-11页 |
| Chapter 1 Introduction | 第11-15页 |
| ·Need for the Study | 第11-13页 |
| ·Objectives of the Study | 第13-14页 |
| ·Structure of the Thesis | 第14-15页 |
| Chapter 2 Literature Review | 第15-31页 |
| ·Lexical Chunks | 第15-22页 |
| ·The Definition of Lexical Chunks | 第15-16页 |
| ·The Classification of Lexical Chunks | 第16-18页 |
| ·The Functions of Lexical Chunks in Language Acquisition | 第18-22页 |
| ·Lexical Approach | 第22-24页 |
| ·Lexical Approach by Michael Lewis | 第22-24页 |
| ·Lexical Approach by Nattinger and DeCarrico | 第24页 |
| ·IELTS Writing | 第24-27页 |
| ·A Retrospect on IELTS | 第24-25页 |
| ·The Characteristics of IELTS Writing | 第25-26页 |
| ·The Evaluation Standards of IELTS Writing | 第26-27页 |
| ·Lexical Chunks in Written Discourse | 第27-29页 |
| ·Characteristics of Lexical Chunks in Written Discourse | 第27-29页 |
| ·Application of Lexical Chunks in Writing Discourse | 第29页 |
| ·Krashen’s Input Hypothesis | 第29-31页 |
| Chapter 3 Research Design | 第31-41页 |
| ·Objectives | 第31页 |
| ·Participants | 第31-32页 |
| ·Experimental Design | 第32-33页 |
| ·Teaching Procedures | 第33-41页 |
| Chapter 4 Data Analysis and Discussion | 第41-49页 |
| ·Data Collection | 第41-43页 |
| ·The Proportion of Every Standard’ Score to the Total Score | 第41页 |
| ·The Percentage of Each Category of Lexical Chunks at Three Levels | 第41-42页 |
| ·The Mean Number of the Four Structural Categories of Lexical Chunks | 第42-43页 |
| ·Data Analysis and Discussion | 第43-49页 |
| ·The Effects of Lexical Chunks Input on the Quality of Learners’ IELTS Writing | 第43-46页 |
| ·The Correlation between the Lexical Chunks Input and the Quality Learners’ IELTS Writing | 第43-45页 |
| ·The Correlation between the Number of Lexical Chunks Used by Learners and the Score of Their IELTS Writing | 第45-46页 |
| ·The Effects of Four Types of Lexical Chunks Input on the Quality of Learners’IELTS Writing | 第46-47页 |
| ·The Effects of Input on the Learners’ Mastering of Lexical Chunks | 第47-49页 |
| Chapter 5 Conclusion | 第49-53页 |
| ·Major Findings in the Present Study | 第49-51页 |
| ·Pedagogical Implications and Suggestions | 第51-52页 |
| ·Limitations of the Study | 第52-53页 |
| Bibliography | 第53-57页 |
| Appendix | 第57-68页 |
| Acknowledgements | 第68-69页 |
| 攻读硕士期间发表论文情况 | 第69页 |
