| Acknowledgements | 第1-4页 |
| Abstract in China | 第4-7页 |
| Abstract in English | 第7-12页 |
| 1 Introduction | 第12-13页 |
| 2 Literature review | 第13-27页 |
| ·The concept of 'fossilization' | 第13-16页 |
| ·The definition of interlanguage | 第13页 |
| ·The notion of fossilization | 第13-14页 |
| ·Features of fossilization | 第14-16页 |
| ·Theoretical explanations of possible causes of fossilization | 第16-27页 |
| ·Age | 第16-17页 |
| ·Social and cultural explanations | 第17-19页 |
| ·Linguistic explanation | 第19-22页 |
| ·Communicative explanation | 第22-24页 |
| ·Cognitive explanations | 第24-25页 |
| ·Learners' learning strategies and fossilization | 第25页 |
| ·Psychological explanation | 第25-26页 |
| ·Summary of the explanations for fossilization | 第26-27页 |
| 3 Background to the study of learner errors | 第27-30页 |
| ·The theory of error analysis (EA) | 第27-28页 |
| ·Weaknesses of EA | 第28页 |
| ·New trends in studies of learner errors abroad | 第28-29页 |
| ·Studies of errors in learners' interlanguages at home | 第29-30页 |
| 4 A survey of errors of college non-English majors and high school graduates | 第30-50页 |
| ·Background empirical studies | 第30页 |
| ·Hypothesis for the present study | 第30页 |
| ·Data collection | 第30-31页 |
| ·The findings | 第31-43页 |
| ·Classification of errors | 第31-36页 |
| ·Analysis of the common errors | 第36-39页 |
| ·Main errors of the sophomores | 第39-40页 |
| ·Similarities between error frequencies of the two groups | 第40-41页 |
| ·Differences between L2 proficiency of the two groups of learners | 第41-43页 |
| ·Discussion of general tendency of fossilization | 第43-50页 |
| ·Analysis of the fossilized errors | 第44-48页 |
| ·Caveats about the survey | 第48页 |
| ·Problems in English language teaching in China | 第48-50页 |
| 5 Implications of the study of fossilization for college English teaching | 第50-63页 |
| ·Establishing realistic teaching goal | 第50-51页 |
| ·Destabilizing interlanguage grammars with grammar teaching | 第51-55页 |
| ·Recognizing the importance of grammar teaching | 第51-52页 |
| ·Arousing students' grammar awareness | 第52-53页 |
| ·Emphasizing core grammar rather than peripheral grammar | 第53-54页 |
| ·Teaching grammar communicatively | 第54-55页 |
| ·Guaranteeing the quality of classroom input | 第55-59页 |
| ·Choosing the right coursebook | 第55-56页 |
| ·Guaranteeing the quality of teacher talk | 第56-57页 |
| ·Making use of multimedia | 第57-59页 |
| ·Correcting errors appropriately | 第59-62页 |
| ·Choosing correction | 第59页 |
| ·Taking positive attitude toward errors | 第59-60页 |
| ·Treating different errors in different ways | 第60-62页 |
| ·Summary of the pedagogical discussion | 第62-63页 |
| 6 Conclusion | 第63-65页 |
| Bibliography | 第65-68页 |
