| This dissertation is on the basis of previous studies of "shi" sentence in modern Chinese and foreign students’acquisition errors of "shi" sentence, and selects the corpus of native-speaking students’acquisition errors of "shi" sentence from the "HSK Composition Corpus" as a study. Based on the theory of SLA (second language acquisition) and interlanguage theory, this article sends questionnaires to these students and by applying statistic analysis, contrast analysis and error analysis it makes statistic and classification of their acquisition errors respectively, and then compares "shi" sentences and their corresponding parts in English expressions. Based on the outcome this paper analyzes reasons of the errors and also proposes the methods to eliminate these errors.The text is divided into six chapters:First chapter, lodging questions, explains the meaning of native-speaking students’acquisition errors of "shi" sentence, lists research methods and theories, and makes a simple statement of research status about "shi" sentence and its acquisition errors domestic and international; Second chapter lists the analysis and statistic of the corpus of native-speaking students’acquisition errors of "shi" sentence from the "HSK Composition Corpus" in the form of table at first, then states the category of the corpus based on the data, and summarizes the analysis of each category finally; Third chapter summarizes the design of questionnaire and its distribution primarily and after that makes statistic and analysis of available ones so that analysis data is obtained. Forth chapter is mainly on the basis of the statistic and analysis in previous two chapters, summarizes the data firstly and afterwards based on the data and comparison of "shi" sentences and their corresponding part in English, finds out four reasons of the errors:1.negative transfer of native language,2.interference of limited knowledge of target language,3.interference of learning strategy4.characteristics of target language. Fifth chapter based on the reasons found gives out the following four countermeasures:1.enhancing the application of contrast in teaching;2.training language sense of target language;3.learners should have proper learning strategy and understand the characteristics of target language;4.teachers should have proper teaching strategy. The concrete measure of the last countermeasure is that teachers have to enhance the research of "shi" sentence and "ba" sentence; Sixth chapter is the conclusion, presents the research results, reasons of the errors, solution countermeasures obtained above and shortcomings of the text briefly. |