Chapter 1 Introduction
1．1 Introduction
1．2 Rationale for the Book
1．3 Purpose of the Book，
1．4 Overview of the Book
Chapter 2 Li terature Review
2．1 Introduction
2．2 Competing Views in the Early Stage
2．3 Canale and Swain’S Communicative Competence
2．4 Bachman and Palmer’S Model
2．5 Larsen—Freeman’S Model
2．6 Purpura’S Model
2．7 Remaining Problems
2．8 Research on Modality
2．9 L2 Acquisition Research of English Modal Verbs
2．10 Research Questions
2．11 Definitions of Key Terms
2．12 Summary
Chapter 3 Research Methodo logy
3．1 Participants
3．2 Instruments and Test Design
3．3 Data Preparation and Collection Procedures
3．4 Data Analysis Procedures
3．5 Comparison of the Models
3．6 SimilaritieS and Differences Between EFA and CFA
3．7 Empirical Validation of the Research Findings
3．8 Summary
Chapter 4 Preliminary Statistics and Analyses
4．1 Preliminary Descriptive Analysis of the Tests
4．2 Two Regression Analyses，
4．3 Preliminary Analysis for Model Validation
4．4 Summary
Chapter 5 Confi rrnatory Factor Analysis of L2 Knowledge Models
5．1 Preliminaries for the Construct Validation of the Modal Verbs Test
5．2 Confirmatory Factor Analyses of the Four L2 Knowledge Models
5．3 Comparison of Knowledge Models of L2 Acquisition
5．4 Discussion on Research Questions 2～6
5．5 Summary
Chapter 6 An Integrated Mode I of L2 Knowledge
6．1 Examination of an Integrated Model of L2 Knowledge
6．2 Validation of the Integrated Model Through Learners'Mental Representation
6．3 Summary
Chapter 7 A Case Study
7．1 Examination of the Difficulty Order in the Acquisition of English Modals with Regard to Meaning
7．2 Examination of the Difficulty Order of English Modals with Regard to Pragmatic Use
7．3 Summary
Chapter 8 Summary and ConcIusions
8．1 Major Findings
8．2 Significance of the Book
8．3 Limitations of the Book
8．4 Recommendations for Further Research
Appendix A General Grammar Test
Appendix B English Modal Verbs Test
Appendix C Questionnaire on L2 Knowledge
Appendix D Free Sentence Production(A Sample)
kppendix E Raw Data(A Sample)
Bibliography
Acknowledgments
