| ACKNOWLEDGEMENTS | 第5-6页 |
| ABSTRACT | 第6-7页 |
| 摘要 | 第8-12页 |
| List of Abbreviations | 第12-15页 |
| CHAPTER ONE GENERAL INTRODUCTION | 第15-20页 |
| 1.1 Research orientation | 第15页 |
| 1.2 Research background | 第15-18页 |
| 1.3 Research significance | 第18页 |
| 1.4 Structure of the thesis | 第18-20页 |
| CHAPTER TWO LITERATURE REVIEW | 第20-36页 |
| 2.1 Overview | 第20页 |
| 2.2 An overview of unaccusativity and overpassivization errors | 第20-22页 |
| 2.3 Major accounts for overpassivization of English unaccusatives | 第22-33页 |
| 2.3.1 L1 morphological transfer | 第23-24页 |
| 2.3.2 Accounts From Universal Grammmar | 第24-27页 |
| 2.3.3 Accounts from cognitive perspective | 第27-31页 |
| 2.3.4 Accounts from usage-based approach | 第31-33页 |
| 2.4 Comments on the previous studies | 第33-36页 |
| CHAPTER THREE RESEARCH METHODOLOGY | 第36-44页 |
| 3.1 Overview | 第36页 |
| 3.2 Research questions | 第36-37页 |
| 3.3 Experiment | 第37-44页 |
| 3.3.1 Experimental design | 第37-38页 |
| 3.3.2 Participants | 第38-39页 |
| 3.3.3 Materials | 第39-41页 |
| 3.3.4 Procedures | 第41-42页 |
| 3.3.5 Data analysis | 第42-44页 |
| CHAPTER FOUR DATAANALYSES AND RESULTS | 第44-61页 |
| 4.1 Overview | 第44页 |
| 4.2 Results of question one | 第44-45页 |
| 4.3 Results of question two | 第45-49页 |
| 4.4 Results of question three | 第49-55页 |
| 4.4.1 Effect of animacy hierarchy of subject | 第49-51页 |
| 4.4.2 Effect of animacy hierarchy subject by proficiency and frequency | 第51-54页 |
| 4.4.3 Summary of the results of question three | 第54-55页 |
| 4.5 Results of question four | 第55-61页 |
| 4.5.1 Effect of verb alternation | 第55-56页 |
| 4.5.2 Effect of verb alternation by proficiency and frequency | 第56-59页 |
| 4.5.3 Summary of the results of question four | 第59-61页 |
| CHAPTER FIVE DISCUSSIONS | 第61-71页 |
| 5.1 Overview | 第61页 |
| 5.2 Findings | 第61-62页 |
| 5.3 Discussion of question one | 第62页 |
| 5.4 Discussion of question two: input factors in overpassivization | 第62-63页 |
| 5.5 Discussion of question three: animacy effect vs. overpassivization | 第63-65页 |
| 5.6 Discussion of question four: verb alternation vs. overpassivization | 第65-67页 |
| 5.7 Usage-based approach vs. overpassivization | 第67-71页 |
| 5.7.1 Usage-based approach on the processing of English unaccusatives | 第67-69页 |
| 5.7.2 Usage-based approach on the acquisition of English unaccusatives | 第69-71页 |
| CHAPTER SIX CONCLUSIONS | 第71-75页 |
| 6.1 Major findings | 第71-72页 |
| 6.2 Implications | 第72-74页 |
| 6.3 Limitations and suggestions for future research | 第74-75页 |
| REFERENCES | 第75-80页 |
| APPENDICES | 第80-83页 |
| Appendix A | 第80-83页 |
| Appendix B | 第83页 |
