| Acknowledgements | 第5-6页 |
| Abstract | 第6-7页 |
| 摘要 | 第8-13页 |
| List of Abbreviations | 第13-14页 |
| Chapter One Introduction | 第14-20页 |
| 1.1 Background of the Research | 第14-17页 |
| 1.2 Significance of the Study | 第17-18页 |
| 1.3 Purpose of the Study | 第18页 |
| 1.4 Structure of the Thesis | 第18-20页 |
| Chapter Two Literature Review | 第20-38页 |
| 2.1 Syntactic Complexity | 第20-24页 |
| 2.1.1 Definition | 第20-21页 |
| 2.1.2 Measures | 第21-24页 |
| 2.2 Related Studies on Syntactic Complexity in English Writing | 第24-33页 |
| 2.2.1 Development Patterns | 第24-26页 |
| 2.2.2 Relationship between Syntactic Complexity and L2 Writing Proficiency | 第26-28页 |
| 2.2.3 Previous Research on Syntactic Complexity in Writing Abroad | 第28-30页 |
| 2.2.4 Previous Research on Syntactic Complexity in English Writing in China | 第30-33页 |
| 2.3 Related Studies on Complex Sentence Teaching in Writing | 第33-36页 |
| 2.4 Comments on Previous Studies | 第36-38页 |
| Chapter Three Theoretical Foundation | 第38-46页 |
| 3.1 Input Enhancement Hypothesis | 第38-40页 |
| 3.2 Output Hypothesis | 第40-42页 |
| 3.3 Notice Hypothesis | 第42-44页 |
| 3.4 Summary | 第44-46页 |
| Chapter Four Research Methodology | 第46-58页 |
| 4.1 Research Questions | 第46-47页 |
| 4.2 Participants | 第47-49页 |
| 4.3 Instruments | 第49-50页 |
| 4.4 Procedures | 第50-54页 |
| 4.5 Data Collection and Analysis | 第54-58页 |
| Chapter Five Results and Discussion | 第58-72页 |
| 5.1 Results | 第58-67页 |
| 5.1.1 Results for Research Question1 | 第58-66页 |
| 5.1.2 Results for Research Question2 | 第66-67页 |
| 5.2 Discussion | 第67-72页 |
| 5.2.1 Input Enhancement, Noticing ,and Output | 第67-68页 |
| 5.2.2 Complex Sentence Training and Syntactic Complexity | 第68-70页 |
| 5.2.3 Complex Sentence Training and Writing Proficiency | 第70-72页 |
| Chapter Six Conclusion | 第72-78页 |
| 6.1 Major Findings | 第72-74页 |
| 6.2 Pedagogical Implications | 第74-75页 |
| 6.3 Limitations and Suggestions | 第75-78页 |
| References | 第78-84页 |
| Appendices | 第84-97页 |
| Appendix Ⅰ Pretest | 第84-85页 |
| Appendix Ⅱ Posttest | 第85-86页 |
| Appendix Ⅲ Rating Criterion for the English Composition of University Entrance Examination | 第86-88页 |
| Appendix Ⅳ Writing Scores in Pretest | 第88-89页 |
| Appendix Ⅴ Writing Scores in Posttest | 第89-90页 |
| Appendix Ⅵ Syntactic Complexity of Control Class in Pretest | 第90-92页 |
| Appendix Ⅶ Syntactic Complexity of Experimental Class in Pretest | 第92-94页 |
| Appendix Ⅷ Syntactic Complexity of Control Class in Posttest | 第94-96页 |
| Appendix Ⅸ Syntactic Complexity of Experimental Class in Posttest | 第96-97页 |
