The focus of this research is syntax. In this research, using the theory from Roni (2017), the types of words that can be positioned as predicates are verbs and i-adjectives, while the types of words that cannot be positioned as predicates are na-adjectives and nouns. As well as the theory of gengogaku kenkyuu kaihen in Yuka Kuroda and Tatsuya Izuha (2008) which is divided into four parts, namely the use of the target, the use of the determined, the use of the cause, and the use of the place. The purpose of research was to determine the type of predicate and the role of the case particle de (で) in Japanese sentences. This research is qualitative research because the results of the data are not in the form of percentages and the data is analyzed using the note-taking method. The results of this reseach are that there are four types of predicates, namely verbs, nouns, i-adjectives, and na-adjectives, as well as the role of the particle de (で) is 1) the use of targets is vehicle, movement of objects accompanied by psychological movement, materials, organization, and tools; 2) the use of determined is express conditions, abstract conditions, amounts, and qualifications; 3) the use of causes that express natural phenomena, mobility, problems, and orders; and 4) the use of place which states the place, spatial, association, and organization.

Keywords: Syntax, Type of predicate, Role of  the case particle de (で), Sentences in Japanenese