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空论元一直是基于生成语法理论的二语习得研究的重要内容,包括空主语和空宾语。英语空主语比空宾语更容易习失,是二语习得的一个普遍现象。本文首先对空论元理论进行了梳理并对空论元进行了跨语言比较,然后回顾和评析了目前二语英语空论元习失中对这种不对称现象的研究,并从母语迁移、目标语输入、普遍语法三个角度对英语空主语和空宾语习失的不对称现象做出了解释,最后指出该领域研究目前存在的问题,以及还可以开展的研究工作。
Null argument has always been an important part of second language acquisition based on grammatical theory, including empty subject and empty object. English empty subject is more likely to lose than empty object, is a common phenomenon of second language acquisition. In this paper, we first sort out the empty theory of meta-theory and cross-language comparison of the empty theory of meta-elements, and then review and appraise the study of the current asymmetric phenomena in the meta-study of the null in the second language English, and from the mother tongue migration, Target language input and universal grammar, this paper explains the asymmetric phenomena of empty subjects and empty objects in English. Finally, it points out the existing problems in this field as well as the research work that can be carried out.