The morphological interference of bahasa Indonesia on Madurese

Madurese are bilingual. They speak both Maduranese language and Bahasa Indonesia because they live in part of Java where most people speaks Bahasa Indonesia. Moreover, Bahasa Indonesia in one of the important lessons at schools. Hence, Madurese native speakers become Indonesian speakers easily. This thesis aims at exploring the grammatical aspects of Bahasa Indonesia which interfere Maduranese language. For having a limited time, it focuses on the morphological interference of Bahasa Indonesia on Maduranese language which includes affixation and reduplication. After analysing and examining the collected data, there is a morphological interference of Bahasa Indonesia on Maduranese language that occurs in affixations, that are, prefixes, confixes, and reduplication