Chapter 1 Introduction 1.1 Motivation of the Study 1.2 Research Objectives 1.3 Significance of the Study 1.4 Definitions of Key Terms 1.5 Organization of the Study Chapter 2 Theoretical Foundations and Literature Review 2.1 Typological Framework of Motion EVents 2.2 Thinking-for-Speaking Hypothesis 2.3 Empirical Research on L1 Motion Event Acquisition 2.4 Empirical Research on L2 Motion Event Acquisition 2.5 Summary Chapter 3 Research Methodology 3.1 Research Design 3.2 Research Procedure 3.3 Summary Chapter 4 Motion Event Expressions in Chinese Oral Narratives 4.1 Research Questions Revisited 4.2 Results 4.3 Discussion 4.4 Summary Chapter 5 Acquisition of English Voluntary Motion Event Expressions 5.1 Research Questions Revisited 5.2 Results 5.3 Discussion 5.4 Summary Chapter 6 Acquisition of English Caused Motion Event Expressions 6.1 A Comparison of English and Chinese Caused Motion Events 6.2 Research Questions Revisited 6.3 Results 6.4 Discussion 6.5 Summary Chapter 7 Conclusion 7.1 Major Findings 7.2 Implications 7.3 Limitations and Suggestions for Future Research Bibliography Appendix Ⅰ Cloze Test Appendix Ⅱ Background Questionnaire