| 摘要 | 第1-6页 |
| Abstract | 第6-10页 |
| 1 Introduction | 第10-20页 |
| ·Need for the study | 第10-15页 |
| ·Research questions and hypothesis | 第15-17页 |
| ·Structure of the Thesis | 第17-20页 |
| 2 Literature Review | 第20-37页 |
| ·Competing Views about L2 knowledge Model in the Early Stage | 第20-23页 |
| ·Componential Views | 第21-22页 |
| ·Global Views | 第22页 |
| ·Unitary Views | 第22-23页 |
| ·Bachman and Palmer’s Model | 第23-26页 |
| ·Larsen-Freeman’s Model | 第26-28页 |
| ·Research on Modality | 第28-34页 |
| ·Motivations | 第28-29页 |
| ·Scope of Research | 第29-31页 |
| ·Types of Modality | 第31-32页 |
| ·A Syntactic and Semantic Description of Modal Verbs | 第32-34页 |
| ·A Model of L2 Knowledge | 第34-37页 |
| 3 Research Methodology | 第37-43页 |
| ·Research Design | 第37-41页 |
| ·Objectives of the Study | 第37页 |
| ·Subjects | 第37-38页 |
| ·Instruments and Test Design | 第38-40页 |
| ·Tools of Analysis | 第40-41页 |
| ·Treatment | 第41页 |
| ·Data collection | 第41-43页 |
| 4 Analysis and Discussions | 第43-55页 |
| ·L2 Acquisition Research of English Modal Verbs | 第43-47页 |
| ·Structural, Cultural and Socio-functional Perspective | 第43-44页 |
| ·Studies on the Acquisition Order of English Modal Verb Meanings | 第44页 |
| ·Semantic and Syntactic Studies of English Modal Verbs | 第44-46页 |
| ·L2 Knowledge Studies with Reference to English Modal Verbs | 第46-47页 |
| ·Confirmatory Factor Analysis of L2 Knowledge Models | 第47-49页 |
| ·Bachman and Palmer’s (1996) Model of L2 Ability | 第47-48页 |
| ·Larsen-Freeman’s (1991) Model of Grammatical Knowledge | 第48-49页 |
| ·An Integrated Model of L2 Knowledge | 第49-55页 |
| ·Examination of the Difficulty Order in the Acquisition of English Modals with Regard to Meaning | 第50-51页 |
| ·Examination of the Difficulty Order of English Modals with Regard to Pragmatic Use | 第51-55页 |
| 5 Conclusion | 第55-58页 |
| ·General findings | 第55-56页 |
| ·Significance of the Study | 第56页 |
| ·Limitations and Suggestions for Further Research | 第56-58页 |
| References | 第58-60页 |
| Appendix | 第60-65页 |
| Acknowledgement | 第65页 |
