| Abstract | 第1-10页 |
| 摘要 | 第10-12页 |
| Chapter One Introduction | 第12-18页 |
| ·Background of the Research | 第12-15页 |
| ·Present Situation of English Teaching in Higher Vocational Colleges | 第12页 |
| ·Research Gap of TBA in Higher Vocational English Teaching | 第12-15页 |
| ·Hypotheses | 第15页 |
| ·Significance of the Research | 第15-17页 |
| ·Organization of the Thesis | 第17-18页 |
| Chapter Two Literature Review | 第18-31页 |
| ·Task-based Approach | 第18-24页 |
| ·Definitions of Task | 第18-19页 |
| ·Design of Task | 第19-20页 |
| ·Definitions of Task-based Approach | 第20-21页 |
| ·Theoretical Rationale of TBA | 第21-23页 |
| ·Willis’Framework of Task-based Approach | 第23-24页 |
| ·Level Teaching | 第24-26页 |
| ·Definition of Level Teaching | 第24-25页 |
| ·Theoretical Rationale of Level Teaching | 第25-26页 |
| ·Teaching Principles of Level Teaching | 第26页 |
| ·Task-based Approach Based on Level Teaching | 第26-28页 |
| ·Connotation | 第26-27页 |
| ·Teaching Principles | 第27页 |
| ·Teaching Procedure | 第27-28页 |
| ·Comparison between TBA Based on Level Teaching and the Traditional Teaching | 第28-31页 |
| ·Traditional Teaching Mode | 第28-29页 |
| ·Differences between TBA Based on Level Teaching and the Traditional Teaching | 第29-31页 |
| Chapter Three Research Design | 第31-40页 |
| ·Experimental Objectives | 第31页 |
| ·Research Questions | 第31-32页 |
| ·Subjects | 第32-33页 |
| ·Instruments | 第33-35页 |
| ·Questionnaires | 第33页 |
| ·Interviews | 第33-34页 |
| ·Observations | 第34页 |
| ·Tests | 第34-35页 |
| ·Experimental Materials | 第35-36页 |
| ·Procedures | 第36-40页 |
| ·Experimental Process | 第36页 |
| ·Experimental Implementation | 第36-40页 |
| Chapter Four Results and Discussion | 第40-59页 |
| ·Effects of TBA and Traditional Teaching on Students’Oral English Proficiency | 第40-44页 |
| ·Analysis of the Oral Test Scores in the Pretest and Posttest | 第40-41页 |
| ·Discussion | 第41-44页 |
| ·Effects of TBA and Traditional Teaching on Students’Overall English Proficiency | 第44-49页 |
| ·Analysis of the Written Test in the Pretest | 第44-45页 |
| ·Analysis of the Written Test in the Posttest | 第45页 |
| ·Discussion | 第45-49页 |
| ·Students’Changed Interest in English Learning and Teaching | 第49-59页 |
| ·Students’Interest in English Learning before the Experiment | 第49-50页 |
| ·Students’Interest in English Learning after the Experiment | 第50-52页 |
| ·Students’Interest in English Teaching before the Experiment | 第52-53页 |
| ·Students’Interest in English Teaching after the Experiment | 第53-54页 |
| ·Analysis of the Interview | 第54-56页 |
| ·Discussion | 第56-59页 |
| Chapter Five Conclusion | 第59-65页 |
| ·Major Findings | 第59-60页 |
| ·Implications | 第60-61页 |
| ·Limitations and Difficulties | 第61-62页 |
| ·Limitations from Teachers | 第61页 |
| ·Difficulties from Students | 第61-62页 |
| ·Difficulties from Social and Teaching Environment | 第62页 |
| ·Suggestions | 第62-65页 |
| Bibliography | 第65-70页 |
| Appendices | 第70-85页 |
| Appendix I Questionnaire 1 高职学生英语学习态度调查（实验前及实验后） | 第70-71页 |
| Appendix II Questionnaire 2 高职学生对英语课堂教学的态度调查（实验前及实验后） | 第71-72页 |
| Appendix III Questionnaire 3学生对以分层教学为基础的任务型教学的态度调查(实验后) （实验班） | 第72-73页 |
| Appendix IV Oral Test Paper in the Pretest | 第73-76页 |
| Appendix V Oral Test Paper in the Posttest | 第76-79页 |
| Appendix VI PETS第二级口试评分标准原文 | 第79-81页 |
| Appendix VII A Sample Teaching Plan | 第81-85页 |
| Acknowledgements | 第85-86页 |
| Publications | 第86页 |
