| Based on the contrastive analysis theory and the Chinese as a foreign language theory,this paper classifies the selected sentences and selects the research examples from the HSK dynamic composition Corpus of Beijing Language University.The questionnaire was designed and collected,and then the data was analyzed.On the basis of analyzing every modal verb,the semantic and grammatical aspects were arranged.This paper makes a comparative analysis of the HSK Corpus and the questionnaires,and enumerates the errors made by foreign students from five aspects: Omission,addition,generation error,order error and other errors,on the basis of analyzing the similarities and differences between the verbs of "Neng","Hui" and "Ke",this paper probes into the causes of the errors of the verbs of "Neng" by foreign students,and puts forward some corresponding teaching strategies.. |