| Abstract | µÚ1-8Ò³ |
| ÕªÒª | µÚ8-9Ò³ |
| Abbreviations | µÚ9-10Ò³ |
| Introduction | µÚ10-12Ò³ |
| Chapter 1 Literature Review | µÚ12-17Ò³ |
| ¡¤Research on IL errors abroad | µÚ12-14Ò³ |
| ¡¤Research on IL errors in China | µÚ14-17Ò³ |
| Chapter 2 Theoretical Foundation | µÚ17-28Ò³ |
| ¡¤Definitions and classifications of error | µÚ17-22Ò³ |
| ¡¤Error | µÚ17-18Ò³ |
| ¡¤Four linguists¡¯classifications of errors | µÚ18-22Ò³ |
| ¡¤Viewpoints on errors | µÚ22-23Ò³ |
| ¡¤The structuralism view | µÚ22Ò³ |
| ¡¤The post-structuralism view | µÚ22-23Ò³ |
| ¡¤Procedures of error analysis | µÚ23-24Ò³ |
| ¡¤Causes of errors | µÚ24-28Ò³ |
| Chapter 3 Research Design | µÚ28-36Ò³ |
| ¡¤Objectives | µÚ28Ò³ |
| ¡¤Participants | µÚ28-29Ò³ |
| ¡¤Instruments | µÚ29-30Ò³ |
| ¡¤Pretest and posttest | µÚ29-30Ò³ |
| ¡¤Two questionnaires | µÚ30Ò³ |
| ¡¤Procedures | µÚ30-36Ò³ |
| ¡¤Assessing the students¡¯writing competence and attitude | µÚ31-33Ò³ |
| ¡¤Assigning a composition every two weeks | µÚ33-34Ò³ |
| ¡¤Reassessing the students¡¯writing competence and attitude | µÚ34-36Ò³ |
| Chapter 4 Data Collection and Analysis | µÚ36-56Ò³ |
| ¡¤Data analysis | µÚ36-44Ò³ |
| ¡¤Data analysis of the collected IL writing | µÚ36-42Ò³ |
| ¡¤Data analysis of the collected questionnaires. | µÚ42-44Ò³ |
| ¡¤Typical errors in vocational school students¡¯compositions | µÚ44-48Ò³ |
| ¡¤Spelling | µÚ45Ò³ |
| ¡¤Diction | µÚ45Ò³ |
| ¡¤Sentence structures | µÚ45-46Ò³ |
| ¡¤Verb form | µÚ46-47Ò³ |
| ¡¤Collocation | µÚ47Ò³ |
| ¡¤Personal pronouns | µÚ47-48Ò³ |
| ¡¤Sources of vocational school students¡¯IL errors | µÚ48-56Ò³ |
| ¡¤Interlingual errors | µÚ49-51Ò³ |
| ¡¤Intralingual errors | µÚ51-53Ò³ |
| ¡¤Strategy-based sources | µÚ53-55Ò³ |
| ¡¤Other errors | µÚ55-56Ò³ |
| Chapter 5 Findings and Implications | µÚ56-64Ò³ |
| ¡¤IL development based on syntax | µÚ56-57Ò³ |
| ¡¤IL development based on Semantics | µÚ57-58Ò³ |
| ¡¤Target language interference | µÚ58-59Ò³ |
| ¡¤Stages of the learners | µÚ59-60Ò³ |
| ¡¤Implications to English language teaching | µÚ60-64Ò³ |
| Conclusion | µÚ64-65Ò³ |
| Bibliography | µÚ65-69Ò³ |
| Appendix (¢ñ) | µÚ69-70Ò³ |
| Appendix (¢ò) | µÚ70-71Ò³ |
| Appendix (¢ó) | µÚ71-73Ò³ |
| Acknowledgements | µÚ73-74Ò³ |
| Publications | µÚ74Ò³ |