Modality as Politeness Marker in Communication: An Analysis on Deontic Modality Of Angkola Language in Semantic prespective

Social interaction is a necessity for every one in ethnic group ( micro scope) and nation (macro scope). Language as group identity is very closed to cultural values that must be considered by the language users. The object of this study is one of the Etnic languages in North Sumatera, that is Angkola Language. The aspect discussed in this language is the use of modals in command sentence (deontic modality seen in semantic perspective). This research used descriptive method with qualitative approach. The data of this study are Oral and Written Data of Angkola Language. The research finding shows that there are three values of deontic Modaliaty in Angkola Language : 1) High degree: ulang (don’t /no), musti/musti akkon (must), tarpaksa (has/has to), 2) Median degree: akkon (should), 3) Low degree: tola (may), na tola, inda tola (may not), izin /izitkon (allow), na diizitkon (not allowed), inda bisa/na bisa (not allowed), dipatola/inda dipatola (allowed/not allowed) and The pariticle as modality markers: da, ma, mada