| 摘要 | 第4-5页 |
| ABSTRACT | 第5-6页 |
| Chapter One Introduction | 第9-12页 |
| 1.1 Background of the Study | 第9-10页 |
| 1.2 Significance of the Study | 第10-11页 |
| 1.3 Organization of the Study | 第11-12页 |
| Chapter Two Literature Review | 第12-23页 |
| 2.1 Automated Writing Evaluation Tools | 第12-17页 |
| 2.1.1 Development of AWE tools | 第12-14页 |
| 2.1.2 The Pigai system | 第14-17页 |
| 2.2 Lexical Application | 第17-19页 |
| 2.2.1 Standards of writing proficiency in English | 第17-18页 |
| 2.2.2 Correlation of lexis and writing skill | 第18-19页 |
| 2.3 Interaction Approach | 第19-23页 |
| 2.3.1 Development of Interaction Approach | 第19-21页 |
| 2.3.2 Application of Interaction Approach in AWE | 第21-23页 |
| Chapter Three Research Method | 第23-27页 |
| 3.1 Research Questions | 第23页 |
| 3.2 Subjects | 第23页 |
| 3.3 Teaching and Research Design | 第23-24页 |
| 3.4 Instruments | 第24-25页 |
| 3.5 Data Collection | 第25-26页 |
| 3.6 Tools Used for Data Analysis | 第26-27页 |
| Chapter Four Results and Findings | 第27-47页 |
| 4.1 Analyses of Students' Writing Tasks | 第27-29页 |
| 4.1.1 Degree of difficulty of eleven writing tasks | 第27-28页 |
| 4.1.2 Analyses of student' writing scores provided by the Pigai system | 第28-29页 |
| 4.2 Linguistic Features in Students' AWE-based Writing | 第29-34页 |
| 4.2.1 Linguistic analyses through the Coh-Metrix tool | 第29-32页 |
| 4.2.2 Textual analyses of linguistic features | 第32-34页 |
| 4.3 Analyses of Different Groups of Students | 第34-39页 |
| 4.3.1 Comparison among students of three English proficiency levels | 第34-37页 |
| 4.3.2 Comparison between male and female students | 第37-39页 |
| 4.4 Students' Perceptions of the Pigai System | 第39-47页 |
| 4.4.1 Analyses of students' overall perceptions of the Pigai system | 第40-43页 |
| 4.4.2 Analyses of perceptions among students of three English proficiencylevels | 第43-45页 |
| 4.4.3 Analyses of perceptions between male and female students | 第45-47页 |
| Chapter Five Discussions | 第47-52页 |
| 5.1 Effects on Students' Lexical Application | 第47-49页 |
| 5.2 Differences among Students of Three English Proficiency Levels | 第49-50页 |
| 5.3 Differences Between Male and Female Students | 第50-52页 |
| Chapter Six Conclusions | 第52-55页 |
| 6.1 Major Findings | 第52-53页 |
| 6.2 Implications of the Study | 第53-54页 |
| 6.3 Limitations of the Study | 第54-55页 |
| References | 第55-61页 |
| Appendix | 第61-64页 |
| Acknowledgements | 第64-65页 |
| Published Papers | 第65-66页 |
