案例教学理念下的词汇习得微变化研究——基于批改网平台的商务英语教学实践

Micro-genetic Analysis on Vocabulary Acquisition Under the Concept of Case-based Teaching——A Business English Teaching Practice Based on www.pigai.org

基于案例教学理念,结合语料库手段和微变化研究方法,运用句酷批改网平台进行为期一年的教学实践,从产出性词汇层面探究商务英语专业学生词汇习得状况。研究发现:观测期内学生产出性词汇的丰富度、难度总体呈上升趋势,平均词长、平均句长和从句密度变化波动明显;词汇丰富度与词汇难度、平均句长与从句密度、词汇难度与测试次数间存在显著正相关关系;学生词汇丰富度波动幅度相对较大,词汇难度、平均词长波动相对平缓。此外,通用英语词汇中的常用词汇和次常用词汇在学生产出性词汇中占较大比重,学生通用英语词汇发展趋于稳定,而产出性词汇中商务英语词汇和国际交际英语词汇频数在观测中呈缓幅波动趋势,于观测后期陡增。

Based on the concept of case-based teaching,using corpus and micro-genetic methods,the present study takes a one-year chronological teaching practice with the platform of www.pigai.org and explores the vocabulary acquisition status of business English majors from the perspective of productive vocabulary.The study found that the lexical richness and lexical difficulty of the students’productive vocabulary during the observation period generally showed an upward trend,and the average word length,average sentence length and the clause density fluctuated obviously;there is a significant positive correlation between lexical richness and lexical difficulty,average sentence length and clause density,lexical difficulty and number of tests;the fluctuation of students’lexical richness is relatively large,and the fluctuation of lexical difficulty and average word length are relatively gentle.In addition,common vocabulary and sub-common vocabulary in general English vocabulary account for a large proportion of students’productive vocabulary,and the development of students’general English vocabulary tends to be stable.The frequency of business English vocabulary and international communication English vocabulary in the students’productive vocabulary fluctuated slowly during the observation,and increased sharply in the later stage of the observation.