Patterns of semantics forming for the -out component in verb-adverbial compounds

The current paper aims to analyze structural types of polypredicative sentences of purpose in the Altai language in comparison with Tuvan and Yakut. The material for this study was obtained by continuous sampling from folklore, fiction and Press in the Altai language. For comparison with Tuvan and Yakut, books and articles covering grammar issues of those languages, particularly syntax, were used. In the course of study, descriptive and comparative methods were applied together with the method of structural modeling. It was found that in order to express purpose, the following patterns are used: (i) monofinite (participial-case, participial-postpositional, adverbial-participial), and (ii) bifinite with conjunctions. The comparison showed that the systems of patterns expressing purpose in the languages differ in syntactic arrangement, postpositions and participial-case forms. This study enabled to identify 6 patterns of purpose in Altai compared to 8 in Tuvan described by L. A. Shamina and 14 in Yakut identified by N. N. Efremova. Clearly, Yakut demonstrates the most developed system of the patterns. It was also found that in all the three languages, monofinite patterns are dominant. Two patterns were identified as common for the three languages: (i) monofinite participial pattern with reason-purpose postposition учун / ужун / иhин 'because of, in oder to', and (ii) bifinite pattern with the common Turkic link деп / диэн 'in order to'. Another finding was that adverbial-participial patterns are mono-subject while participial-case and participial-postpositional patterns are variable-subject. The outlook for further study will include semantic types and functioning analysis of the patterns of purpose in Altai compared to other Siberian Turkic languages.