Adopting the method of corpus, this paper investigates lexical errors in 134 pieces of CET4 writing.
运用语料库的方法，调查了134篇大学英语四级写作语料中的词汇错误。
The words generated by international students only exist in the interlanguage but not in the target language, that is a main kind of lexical errors-lexical structural errors.
留学生在生成汉语时出现了汉语中不存在的词语，这是留学生词汇偏误的一种重要类型，即词语构造上的偏误。
Lexical analysis of the main tasks are: to scan source code character by character from left to right, resulting in one word (Token), also check the source of lexical errors.
词法分析的主要任务是：从左到右逐个字符地扫描源程序，产生一个个单词(Token)，同时检查源程序中的词法错误。
Lexical analysis of the main tasks are: to scan source code character by character from left to right, resulting in one word (Token), also check the source of lexical errors.
词法分析的主要任务是：从左到右逐个字符地扫描源程序，产生一个个单词(Token)，同时检查源程序中的词法错误。
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