The paper presents a new theory of the origin of the Balto‐Slavic ā‐aorist. It is argued that the conjunct evidence of Baltic and Slavic allows us to reconstruct a clear picture of the position of the ā‐aorist in the Balto‐Slavic verb system: the Balto‐Slavic aorist suffix *‐ā‐ was non‐acute (thus pointing to an original form *‐ah₂‐e/o‐ > Bl.‐Sl. *‐ā‐), triggered zero grade of the root, and was exclusively found beside primary thematic and i̯e/o‐presents. As indicated by a new analysis of the Slavic data, the ā‐aorist was exclusively used to make aorists from PIE present roots. In spite of frequent claims to the contrary, the Balto‐Slavic ā‐aorist has no obvious cognates elsewhere in the family and is thus likely to be an innovation of this branch. The most obvious clue within Balto‐Slavic itself is the formal identity of Baltic ā‐preterits and ā‐presents. Some recent refinements in our understanding of the Indo‐European ah₂‐presents and their development in Balto‐Slavic (where they were specialized as a deverbative formation with iterative value) allow us to postulate that the Balto‐Slavic ā‐aorist goes back to the imperfect of a Balto‐Slavic ā‐iterative.

中文翻译：

---

巴尔的斯拉夫教皇

本文提出的巴尔托斯拉夫起源的新理论一-aorist。有人认为，波罗的海和斯拉夫的合取证据使我们能够重建的位置清晰的画面ā在巴尔托斯拉夫-aorist动词系统：巴尔托斯拉夫不定过去后缀* - ā -在非急性（因此指向一个原始形式* -啊₂ -e / O - > Bl.-Sl. * - ā - ），触发零级的根，并且是专门发现专题和主旁IE / O -presents。如由斯拉夫数据的一个新的分析中，所指示ā‐aorist专门用于使PIE成为现存的无主症患者。尽管频繁的说法与此相反，在巴尔托斯拉夫一个-aorist在家庭的其他地方没有明显的同源词，因此很可能是这个分支的一个创新。巴尔托斯拉夫本身最明显的线索是波罗的海的正式身份ā -preterits和ā -presents。最近在我们的印欧了解一些改进啊_2个-presents及其巴尔托斯拉夫（他们在那里专门为deverbative形成与迭代值）的发展让我们假设该巴尔托斯拉夫ā -aorist追溯到一个巴尔托斯拉夫不完善一个-iterative。