国内外对于英语词块输出的研究大多聚焦于学习者使用词块的数量和分类,极少涉及词块使用的质量问题。本文从数量和质量两大方面提出评测学习者词块输出能力的研究框架。借鉴二语习得领域中的CAF模型,将词块使用质量定义为准确而又得体地输出多种多样词块的能力,主要体现在多样性和准确度两个二级指标。本文着重论述了如何界定词块准确度及词块误用、如何通过语料库随机索引行解读,并结合推断性统计的方法来分析学习者词块输出准确度及常见失误。 At home and abroad, most of the research on the output of English lexical chunks focuses on the number and classification of lexical chunks used by learners, and rarely involves the quality problems of lexical chunks. In this paper, we put forward a research framework to measure learner lexical output ability from two aspects of quantity and quality. Borrowing from the CAF model in second language acquisition, the quality of block usage is defined as the ability to accurately and appropriately output a wide range of word blocks, which is mainly reflected in two second-level indicators of diversity and accuracy. This article focuses on how to define block accuracy and block misuse, how to interpret corpus random index lines, and combined with inferential statistics to analyze learner block output accuracy and common mistakes.