نقش معنایی و نحوی تکواژ Rā- در کردی سورانی

The purpose of this paper is to examine the role of semantic and syntactic rā morpheme in Sorani Kudish based on Van Valin’s (1996, 1997, 2007) Role and Reference Grammar. In this paper, it is shown that attaching –rā to the verb causes to absent all specific roles related to actor, e.g. agent, force, instrument and other specific roles such as experiencer, performer, consumer, etc. in the syntax level. These specific roles directly affect the undergoer. Since in all of the mentioned cases, the manifestation of -rā causes to the absence of actor in the syntax level, the crucial role of this morpheme is an anti-actor. In terms of semantic properties of NP, the more agency of NP, the more attaching –rā to the verb. Although the manifestation of -rā often occurs in the sentences containing two-argument verbs. It also occurs in intransitive sentences containing actor, and causes to the absence of the actor. Moreover, based on the presence of –rā morpheme in a structure, it further plays the role of a non-active morpheme, and it is shown that all non-active structures have semantically actor.