Ergativity splits between perfect and imperfective/progressive predicates are observed in languages with a specialized ergative case (Punjabi) and without it (Kurdish). Perfect predicates correspond to a VP projection; external arguments are introduced by means of an oblique case, namely an elementary part-whole predicate saying that the event is 'included by', 'located at' the argument. A more complex organization is found with imperfective/progressive predicates, where a head Asp projects a functional layer and introduces the external argument. Our proposal further yields the 1/2P vs. 3P Person split as a result of the intrinsic ability of 1/2P to serve as 'location-of-event'.Keywords: ergative case; oblique case; aspect; person split; Indo-Iranian
OutlineErgative alignments in case and agreement observed in Indo-Iranian languages are generally subject to an aspectual split; in Punjabi a person split is also observed. We argue that in Punjabi and Kurdish 1 the transitivizing 1 We use primary data, allowing us to base the analysis directly on the intuitions of our native informants. The choice of Punjabi depends on its emblematic case organization (Bailey 1904;Bhatia 1993). Data are transcribed in a broad IPA from the (Doabi) variety spoken in the Indian town of Hoshiarpur; in the transcription we leave out in particular tonal properties (Bhatia 1993). Some variability in the examples reflects the native speakers varying output (for instance as to whether the auxiliary is or is not realized Punjabi) or an allpurpose oblique (Kurdish). There are two major streams in our discussion, one relating to the aspectual split, and the other relating to the nature of ergative case -which converge in the proposal we put forward. The fact that the two proposals converge in the picture we provide for Indo-Aryan and Iranian languages does not imply that they are logically dependent from one another. In any event, we argue that they both hold in the languages at hand. As for the aspectual split, there appears to be a fair consensus in recent generative literature that perfect predicates or perfect sentences lack structure present in their imperfective counterparts ( As we already mentioned, we take the view that ergative case is an oblique. The morphological evidence favours this conclusion, to the extent that subjects in ergativity splits bear the same case as genitive complements of nouns, dative arguments of verbs, instrumental adjuncts (see section 3.2). Note that although the genitive has sometimes been taken to be a structural case (especially Alexiadou 2001), datives and instrumentals are normally taken to be inherent cases; in the languages we consider, the morphological evidence supports the conclusion that all three are oblique cases (unlike, say, absolutive/nominative). If so, the dependent case algorithm cannot be involved in any general way in ergative alignments, since the algorithm only works by excluding inherent cases (datives, instrumentals, etc.) to begin with. We detail our proposal in section ...