It is a well-known fact that most Altaic languages display similar sentence structure and word order. However if we drill further into the deeper structures of these languages, we can figure out some peculiar features which are sui generis.
Impersonal constructions are many varieties of types, such as agentless gerunds, agentless passives, existential sentences, and modal sentences etc. Since most Turkic languages are pro-drop in nature, omitting the pronominal subject also helps to form impersonal constructions. Contrarily, most Mongolic languages are non- pro-drop and lack enclitic negative marker as -mA (-ma/-mä). As a result, different methods are used to form affirmative or negative impersonal constructions in Mongolic and Manchu-Tungusic languages. This paper will compare the structure of impersonal constructions in these languages. Here I shall limit my discussion to Uyghur and Mongolian language facts.