大学英语教材的课文篇际词汇重复模式研究

英语学习中，词汇是一个重要的部分。大学英语学习中，英语教材中课文的词汇重复模式直接影响到学生的词汇习得。统计分析表明，三套通用大学英语教材中，课文中词汇与词形比例较英语本族语随机语料低；一次词分布与本族语语料相似，所占比例较大，但其在各册教材中的增长趋势得到很好的控制；课文篇际重复5至15次及以上的词汇与英语本族语语料类似，在语篇词汇总量中比例较低。课本中一次词分布状况符合语言习得规律，但是多次词占比较少。教学中需采取适当的弥补措施。

A Research on Lexical Repeating Patterns between Texts in College English Textbooks

vocabulary is an important part in English language learning.In college English learning,the lexical repeating patterns in the texts of college English textbooks have a direct influence on students’ acquisition of vocabulary.Statistics shows that in the three most widely used college English textbooks in China,the ratios of vocabulary and morphology in all the textbooks are lower than that of random native English language texts;the ratios of hapax legomena to all vocabulary in textbooks are high,which is similar to that in random native English language materials,but the increase of hapax legomena across different levels of texts is well-managed;and the ratios of vocabulary repeating 5 to 15 times and more to all vocabulary in textbooks are relatively low,which is similar to that of random native English language texts.The distribution of hapax legomena in textbooks is in accordance with the rules of lexical acquisition,but the ratio of vocabulary repeating 5 to 15 times and more in all vocabulary is low,which requires some appropriate compensational measures in vocabulary teaching.