This paper concerns Bulgarian da-constructions (daCs), phrasal structures that correspond to subjunctive or infinitival structures in other languages. In combining two theoretical contributions to the syntax and semantics of Bulgarian subjunctives, an attempt is made to reconsider the Bulgarian mood system, focussing on daCs. The crucial claim is that daCs mark the absence of the indicative being associated with the supposition of subject certainty (Siegel 2009). Accordingly, da is a semantically vacuous mood marker chosen when the indicative would cause a semantic failure. By adding Krapova’s (2001) distinction between [+T] and [-T] daCs, their correspondence to subjunctive or infinitival structures in other languages follows immediately.

中文翻译：

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保加利亚语

本文涉及保加利亚语 da-constructions (daCs)，即与其他语言中的虚拟语气或不定式结构相对应的短语结构。结合对保加利亚虚拟语气句法和语义的两个理论贡献，尝试重新考虑保加利亚语气系统，重点是 daC。关键的主张是 daC 标志着与主题确定性假设相关的指示性的缺失（Siegel 2009）。因此，da 是当指示语会导致语义失败时选择的语义上空洞的语气标记。通过添加 Krapova (2001) 对 [+T] 和 [-T] daC 的区分，它们与其他语言中的虚拟或不定式结构的对应关系会立即出现。