| Abstract | 第1-5页 |
| 摘要 | 第5-9页 |
| Abbreviations | 第9-13页 |
| 1. Introduction | 第13-17页 |
| ·Research Background | 第13-14页 |
| ·Research Significance and Purpose | 第14-15页 |
| ·Framework of the Thesis | 第15-17页 |
| 2. Literature Review | 第17-31页 |
| ·Definition of Related Concepts | 第17-21页 |
| ·Definition of Stratified Teaching | 第17-18页 |
| ·Definition of Implicit Stratified Teaching | 第18-19页 |
| ·Organization Models of Stratified Teaching | 第19-21页 |
| ·Theoretical Basis of Research | 第21-25页 |
| ·The Theory of the Zone of Proximal Development | 第21-22页 |
| ·The Teaching Process Optimization Theory | 第22-23页 |
| ·The Language Input Hypothesis Theory | 第23-24页 |
| ·The Humanist Learning Theory | 第24-25页 |
| ·Studies on Stratified Teaching Abroad | 第25-27页 |
| ·Studies on Stratified Teaching at Home | 第27-31页 |
| 3. Research Design | 第31-49页 |
| ·Research Questions | 第31页 |
| ·Research Subjects | 第31-32页 |
| ·Research Instruments | 第32-34页 |
| ·Tests | 第32页 |
| ·Questionnaire | 第32-34页 |
| ·Research Procedures | 第34-38页 |
| ·Students Gradation | 第34-35页 |
| ·Teaching Objectives Gradation | 第35-36页 |
| ·Teaching Process Gradation | 第36-37页 |
| ·Assessment Gradation | 第37-38页 |
| ·Writing Teaching Samples | 第38-49页 |
| ·Samples of Implicit Stratified Teaching Objectives | 第38-41页 |
| ·Samples of Implicit Stratified Teaching Process | 第41-43页 |
| ·Samples of Implicit StratifiedAssessment | 第43-49页 |
| 4. Data Collection andAnalysis | 第49-69页 |
| ·Results andAnalysis of Pre-test between EC and CC | 第49-50页 |
| ·Results andAnalysis of Post-test between EC and CC | 第50-52页 |
| ·Comparison of Pre-test and Post-test in EC | 第52-53页 |
| ·Comparison of Pre-test and Post-test in CC | 第53-54页 |
| ·Data Collection and Analysis of Questionnaire | 第54-65页 |
| ·Test for Reliability and Validity of Questionnaire | 第54-57页 |
| ·Students’Writing Confidence in EC | 第57-58页 |
| ·Students’Writing Interest in EC | 第58-59页 |
| ·Students’Writing Preparation in EC | 第59-60页 |
| ·WritingAssessment in EC | 第60-62页 |
| ·Learning Writing Structure in EC | 第62-63页 |
| ·Learning Types of Writing in EC | 第63-65页 |
| ·Suggestions for Implementation of Implicit Stratified Teaching | 第65-69页 |
| ·Paying Attention to Students’Thinking Development | 第65-66页 |
| ·Designing Appropriate Stratified Teaching Objectives | 第66页 |
| ·Solutions to Stratified Assessment | 第66-67页 |
| ·Playing Teachers’Initiative | 第67-69页 |
| 5. Conclusion | 第69-71页 |
| ·Major Findings of the Study | 第69-70页 |
| ·Limitations and Suggestions for Future Study | 第70-71页 |
| Acknowledgements | 第71-73页 |
| References | 第73-77页 |
| Appendix A | 第77-78页 |
| Appendix B | 第78-79页 |
| Appendix C | 第79-80页 |
| Appendix D | 第80-81页 |
| Appendix E | 第81-82页 |
| Appendix F | 第82-83页 |
| Appendix G | 第83-84页 |
| Appendix H | 第84-85页 |
| Appendix I | 第85-87页 |
| Publications | 第87页 |
