Abstract :
The findings of this thesis showed from the domain family consists five efforts and fourteen extracts. Firstly,
effort use Manggarai Language at home, secondly, teaching Manggarai Language at home, thirdly, use both Manggarai Language and the other language and fourthly the use Manggarai Language for interaction with Neighborhood.
Therefore, the conclusion of this thesis about description of Manggarai Language used to occur the Language choice, code mixing and code switching. In the domain Mass Media consists of two efforts and three extracts. Firstly effort is using Manggarai Language for communication and the secondly, using Manggarai Language to write Billboard. The situation of Manggarai Language in language occur is billingual, code mixing, diglossia and language choice. Domain Religion consists of one effort and twelve extracts. The effort is using Manggarai Language to communicate around the Mosque. The last domain there is domain Education
with consists of one effort and twelve extracts.