In this study, the topic of adverbial clauses within modern Turkish, the mostly spoken and processed language among Turkic language family in Altaic languages will be covered. Turkish type subordinate clauses has always been an attractive topic for western researchers and broad literature on these exists in the western world. Various evaluations of adverbial clauses are present in this literature. For example, in Altaic languages, the word order in an ordinary sentence is as subject-object-verb and subordinate clause precedes the main clause. However, during my PhD thesis, novel tendencies and constructions differing from these general observations are also determined. In this regard, word order of adverbial clauses in modern Turkish and marking of adverbial clauses as well as their position relative to superordinate clause will be discussed extensively in this study.