Investigation into the differential effects of subtitles (first language, second language, and bilingual) on second language vocabulary acquisition
I Acknowledgements. II List of Figures VII List of Tables VIII List of abbreviations X Chapter 1: Introduction 1 1.1 Overview 1 1.2 General Statements and Background 2 1.2.1 ELT in China 2 1.2.2 Vocabulary teaching in China 4 1.3 Motivation for the Study 6 1.4 Research Questions 10 1.5 Thesis Outline 11 Chapter 2: General Case for L1 and L2 Use 13 2.2 Historical Overview of Using L1 in the L2 Classroom 13 2.3 Theoretical Perspectives on L1 use in L2 Learning 16 2.3.1 Bilingual mind: cognitive perspectives 16 2.3.2 Sociocultural approaches to L1 use. 20 2.4 Critical Perspectives of L1 Use in the L2 Learning 21 2.5 Pedagogical Perspective on L1 Use in the L2 Classroom 22 2.5.1 The extent of L1 use in the L2 classroom 23 2.5.2 The benefits of L1 use in the L2 classroom 23 2.5.3 L1 use in language skills development 24 2.6 Chapter Summary 28 Chapter 3: Vocabulary 29 3.