| ACKNOWLEDGEMENTS | 第6-7页 |
| ABSTRACT | 第7页 |
| 摘要 | 第8-14页 |
| CHAPTER Ⅰ INTRODUCTION | 第14-19页 |
| 1.1 Background of the Study | 第14-16页 |
| 1.2 Aims and Significance of the Study | 第16-17页 |
| 1.3 Organization of the Thesis | 第17-19页 |
| CHAPTER Ⅱ LITERATURE REVIEW | 第19-35页 |
| 2.1 Introduction | 第19页 |
| 2.2 Fluency: Defining Oral Fluency in Different Fields | 第19-23页 |
| 2.2.1 Fluency Regarded as Synonymous with Spoken Proficiency | 第19-20页 |
| 2.2.2 Fluency as Distinguished from Accuracy | 第20-21页 |
| 2.2.3 Fluency as Identifiable Ingredient of Proficiency | 第21-23页 |
| 2.3 Definition and Classification of Lexical Chunks | 第23-28页 |
| 2.3.1 Prefabs and Lexical Chunks | 第24-25页 |
| 2.3.2 Idiomatic Lexical Chunks | 第25-26页 |
| 2.3.3 Literal Lexical Chunks | 第26-28页 |
| 2.3.3.1 Multiword Smallwords | 第26-27页 |
| 2.3.3.2 Multiword Discourse Markers | 第27页 |
| 2.3.3.3 Collocations | 第27-28页 |
| 2.4 Previous Studies on Fluency and Lexical Chunks | 第28-33页 |
| 2.5 Summary | 第33-35页 |
| CHAPTER Ⅲ THEORETICAL FRAMEWORKS OF THE STUDY | 第35-41页 |
| 3.1 Levelt’s Model of Speech Production | 第35-38页 |
| 3.1.1 Conceptual Preparation | 第35-37页 |
| 3.1.2 Grammatical Encoding and Phonological Encoding | 第37-38页 |
| 3.1.3 Articulation | 第38页 |
| 3.2 Anderson’s ACT Theory | 第38-41页 |
| CHAPTER Ⅳ METHODOLOGY | 第41-55页 |
| 4.1 The General Description of the Research Design and Methodological Approach | 第41页 |
| 4.2 Research Questions | 第41-42页 |
| 4.3 Participants | 第42-43页 |
| 4.4 Instruments | 第43-45页 |
| 4.4.1 Oral English Tests | 第43-44页 |
| 4.4.2 Software Cool Edit Professional (version 2.1) | 第44页 |
| 4.4.3 SPSS | 第44-45页 |
| 4.5 Instructional Treatment to the Experimental Class | 第45-47页 |
| 4.5.1 Noticing | 第45-46页 |
| 4.5.2 Retrieving | 第46-47页 |
| 4.5.3 Generating | 第47页 |
| 4.6 Instructional Treatment to the Control Class | 第47-48页 |
| 4.7 Data Collection | 第48-53页 |
| 4.7.1 Pre-test and Post-test | 第48-49页 |
| 4.7.2 Phonetic Description and Calculation of Fluency Indexes | 第49-52页 |
| 4.7.3 Calculation of Lexical Chunks Indexes | 第52-53页 |
| 4.8 Data Analysis | 第53-55页 |
| CHAPTER Ⅴ RESULTS AND DISCUSSION | 第55-69页 |
| 5.1The Selection of Parallel Groups | 第55-57页 |
| 5.2 Changes of the Use of Lexical Chunks | 第57-59页 |
| 5.3 Changes of Oral Fluency | 第59-64页 |
| 5.3.1 Comparison of the Oral Fluency Indexes of Experimental Group on Pre-testand Post-test | 第59-60页 |
| 5.3.2 Comparison of the Oral Fluency Indexes Between Experimental Group andControl Group on Post-test | 第60-62页 |
| 5.3.3 Discussions of Changes of Oral Fluency | 第62-64页 |
| 5.4 Relationship between Lexical Chunks and Oral Fluency | 第64-69页 |
| 5.4.1 Multiple Linear Regression with SR as the Dependent Variable | 第64-65页 |
| 5.4.2 Multiple Linear Regression with PTR as the Dependent Variable | 第65-66页 |
| 5.4.3 Multiple Linear Regression with ALP as the Dependent Variable | 第66-67页 |
| 5.4.4 Multiple Linear Regressions with MLR, REFT and SCT as the DependentVariables | 第67页 |
| 5.4.5 Discussions of the Relationship between Lexical Chunks and Oral Fluency | 第67-69页 |
| CHAPTER Ⅵ CONCLUSION | 第69-73页 |
| 6.1 Major Findings and Conclusions | 第69-70页 |
| 6.2 Implications for Second Language Learning and Teaching | 第70-71页 |
| 6.3 Limitations and Suggestions for Further Study | 第71-73页 |
| REFERENCES | 第73-77页 |
| APPENDIX I The Topic Adopted for the Elicitation of the Subjects’ Oral Production in Pretest | 第77-78页 |
| APPENDIX II The Topic Adopted for the Elicitation of the Subjects’ Oral Production in Post-test | 第78-79页 |
| APPENDIX III Subject’s Raw Score in the Experimental Group | 第79-81页 |
| APPENDIX IV Subject’s Raw Score in the Control Group | 第81页 |
