چكيده لاتين :
Tati Dialect is one of the Iranian North Western dialects divided into two major branches: Northern and Southern. The former is spoken in Iran and the latter in the Republic of Azarbaijan and Kazakhestan. In Iran, this dialect is prevalent in Khalkhal, Takestan, Qazvin, Rudbar, northern Khorasan and in the vicinity of Tabriz such as Karingan, Kalibar, Kalasur, and Harzand. In this article, the structure of Tati verb, conjugation of the verb in the present and past tenses, roots of the verbs, voice and aspect, infinitive, and passive are described on the basis of Deravi accent (a village in Shahrud of Khalkhal). The paper describes the following issues: Optative mood, two conditional perfect tenses, ergative case, and sixteen forms of the present and past tenses. Tatiʹs numerous ancient characteristics are almost neglected in linguistic studies and Tati accents have not been sufficiently subjected to literary description.