| 摘要 | 第1-7页 |
| Abstract | 第7-11页 |
| 1 Introduction | 第11-14页 |
| ·Research background | 第11页 |
| ·Research purpose and significance | 第11-12页 |
| ·Research methodology | 第12页 |
| ·Organization of the thesis | 第12-14页 |
| 2 Literature review | 第14-27页 |
| ·Previous review on categories and categorization | 第14-16页 |
| ·Categories | 第14-15页 |
| ·Categorization | 第15-16页 |
| ·Previous research on two different models of categorization | 第16-19页 |
| ·The classical theory of categories | 第16-17页 |
| ·The prototype theory | 第17-19页 |
| ·Relations between the classical theory of categories and the theory | 第19页 |
| ·Previous research on levels of categorization | 第19-23页 |
| ·Basic level categories | 第20-21页 |
| ·Superordinate categories and subordinate categories | 第21-22页 |
| ·Summary | 第22-23页 |
| ·Previous research on basic level terms | 第23-26页 |
| ·Basic level terms | 第23-24页 |
| ·Verbs of the basic level | 第24-26页 |
| ·Summary | 第26-27页 |
| 3 Theoretical framework | 第27-35页 |
| ·The theory of categorization | 第27-28页 |
| ·The theory of basic level categories | 第28-31页 |
| ·The concept of basic level categories | 第28-29页 |
| ·The features of basic level categories | 第29-31页 |
| ·Basic level verbs | 第31-34页 |
| ·The concept of basic level verbs | 第31-32页 |
| ·The features of basic level verbs | 第32-34页 |
| ·Basic level verbs vs. superordinate verbs vs. subordinate verbs | 第34页 |
| ·Summary | 第34-35页 |
| 4 Use of basic level verbs by English majors and non-English majors at NBU | 第35-58页 |
| ·Research design | 第35-38页 |
| ·Task assignment | 第35-36页 |
| ·Data collection | 第36-37页 |
| ·Statistics | 第37-38页 |
| ·Main findings | 第38-46页 |
| ·General picture: the use of the 3 types of verbs | 第38-40页 |
| ·Variety and diversity of basic level verbs | 第40-43页 |
| ·Basic level verbs: degree of correctness and appropriateness | 第43-44页 |
| ·Basic level verbs: grammatical characteristics | 第44-46页 |
| ·Explanations | 第46-53页 |
| ·The high frequency of basic level verbs by L2 learners | 第46-47页 |
| ·The overuse of top ten basic level verbs by L2 learners | 第47-48页 |
| ·Basic level verb: incorrect and inappropriate usage | 第48-49页 |
| ·The overuse of basic level verb + adjunct | 第49-52页 |
| ·Underuse of superordinate and subordinate verbs | 第52-53页 |
| ·Basic level verb and proficiency level | 第53-54页 |
| ·Subordinate verb use and proficiency level | 第54-56页 |
| ·Summary | 第56-58页 |
| 5 Conclusion | 第58-61页 |
| ·Major findings | 第58-59页 |
| ·Implications | 第59-60页 |
| ·Suggestions for further study | 第60-61页 |
| References | 第61-64页 |
| Appendix Pictures for student writing | 第64-69页 |
| List of Tables | 第69-70页 |
| Academic Achivements | 第70-71页 |
| Acknoledgements | 第71页 |
