传统观点认为,任选义any的本质是不定指性,由any短语内在的语义特征,即类指性与存在性所决定。类指性由类指算子GEN约束,存在性由存在量词约束。本文从语境角度出发,在质疑以上观点的基础上,提出任选义any的本质是语境无定,语境无定/有定是判定任选义any句正误的唯一标准。 According to the traditional view, the essence of optional any is indefinite, which is determined by the inherent semantic features of any phrase, namely the analogy and existentiality. The classifier is constrained by the genre operator GEN and the existence is restrained by the existing measure. From the perspective of context, on the basis of questioning the above viewpoints, this article proposes that the essence of any choice of any is that the context is indefinite and the context is indefinite / definite.