| Abstract in Chinese | 第4-5页 |
| Abstract in English | 第5页 |
| 1 Introduction | 第8-13页 |
| 1.1 Background of the Research | 第8-11页 |
| 1.2 Significance of the Research | 第11-13页 |
| 2 Literature Review | 第13-32页 |
| 2.1 Conceptions of Relevant Terms | 第13-19页 |
| 2.1.1 Classroom Discourse | 第13-14页 |
| 2.1.2 Teacher Talk | 第14-16页 |
| 2.1.3 Modification in Teacher Talk | 第16-19页 |
| 2.2 The Theoretical Basis | 第19-23页 |
| 2.2.1 Chaudron’s View on Teacher Talk | 第19-21页 |
| 2.2.2 Long’s Interaction Hypothesis | 第21-23页 |
| 2.3 Studies of the Modifications in Teacher Talk Abroad and at Home | 第23-32页 |
| 2.3.1 Studies of the Modifications in Teacher Talk Abroad | 第23-27页 |
| 2.3.2 Studies of the Modifications in Teacher Talk at Home | 第27-32页 |
| 3 Research Design | 第32-40页 |
| 3.1 Objectives | 第32-33页 |
| 3.2 Subjects | 第33页 |
| 3.3 Instruments | 第33-36页 |
| 3.3.1 Classroom Observation | 第33-34页 |
| 3.3.2 Interview with Teachers in Senior High Schools | 第34-35页 |
| 3.3.3 Interview with Students in Senior High Schools | 第35-36页 |
| 3.4 Data Collection | 第36-37页 |
| 3.5 Data Analysis | 第37-40页 |
| 3.5.1 The Analysis of Linguistic Modifications in Teacher Talk | 第37-39页 |
| 3.5.2 The Analysis of Interactive Modifications in Teacher Talk | 第39-40页 |
| 4 Results and Discussion | 第40-72页 |
| 4.1 The Linguistic Modifications in Teacher Talk between Demonstration and Regular English Reading Classes | 第40-64页 |
| 4.1.1 Modifications in Speech Rate | 第40-43页 |
| 4.1.2 Modifications in Speech Pause | 第43-47页 |
| 4.1.3 Modifications in Pronunciation | 第47-49页 |
| 4.1.4 Modifications in Vocabulary | 第49-52页 |
| 4.1.5 Modifications in Subordinate Clauses | 第52-57页 |
| 4.1.6 Modifications in Statements and Questions | 第57-60页 |
| 4.1.7 Modifications in Self-repetition | 第60-64页 |
| 4.2 The Interactive Modifications in Teacher Talk between Demonstration and Regular English Reading Classes | 第64-72页 |
| 4.2.1 Comprehension Check | 第65-67页 |
| 4.2.2 Confirmation Check | 第67-69页 |
| 4.2.3 Clarification Request | 第69-72页 |
| 5 Conclusion | 第72-75页 |
| 5.1 Major Findings | 第72-73页 |
| 5.2 Implications | 第73-74页 |
| 5.3 Limitations | 第74页 |
| 5.4 Suggestions for Further Research | 第74-75页 |
| Bibliography | 第75-78页 |
| Appendices | 第78-87页 |
| Appendix 1 | 第78-79页 |
| Appendix 2 | 第79-80页 |
| Appendix 3 | 第80-81页 |
| Appendix 4 | 第81-83页 |
| Appendix 5 | 第83-84页 |
| Appendix 6 | 第84-87页 |
| Acknowledgements | 第87页 |
