This research evaluates Klamer's statement that says several languages in the Lesser Sunda Islands (and some languages in Sulawesi) do not have passive constructions. Therefore, this study aims to prove whether the Manggarai language has passive construction forms with different semantic roles. The data used in this study are clauses in the Manggarai language that contain five semantic role arguments: actor, patient, benefactive, instrumental, and locative. This is done by examining the semantic role argument to be positioned as the subject. The results show that the Manggarai language is indeed a language that has two voices, which means that active and passive constructions exist. However, Manggarai does not experience morphological chang...