Abstract: The new word of Chinese characters is one of the main factors that should be taken into account when compiling the primary Chinese textbooks. In this paper, computer is used to automatically count and analyze the Chinese characters used in the news section on websites of people. com. cn and Tencent. com, the corpus of extracurricular reading and the Chinese textbooks of PEP edition, and then to calculate the quantity of words that students in various grades of primary school know, which underlay the suggestion of updating the primary Chinese textbooks. Meanwhile, the word frequency, the common use frequency and the coverage rate of the characters used in the news corpus and the List of Commonly Used Characters in Modern Chinese are statistically analyzed. The results reveal the effectiveness for a given period of time of the commonly used words in people’s daily life. Thus, this paper serves statistical basis for the adjustment of the List.

Key words:  recognition quantity, commonly used words, use frequency, corpus

摘要： 汉字生字是编写小学语文教材的主要考虑因素之一，采用计算机自动对人民网、腾讯网新闻、课外阅读语料和人教版义务教育语文教材中汉字进行统计和分析，计算出小学各年级学生的汉字认识量，并将其作为建议更新小学语文教材中常用字的依据。同时，对新闻语料和《现代汉语常用字表》中的汉字的字频、通用率和覆盖率等属性进行统计和对比，结果表明人们日常生活中的常用汉字也具有一定的时效性，给今后《现代汉语常用字表》的调整工作提供了统计学上的依据和参考。

关键词: 认识量, 常用字, 使用频度, 语料库