A Study of Interlanguage Used by Indonesian Teenagers in English as a Foreign Language

Abstract

Various language mistakes made by teenagers in learning English as a foreign language in Indonesia is an important phenomenon to be studied. These language errors illustrate the effectiveness of foreign language learning that has been carried out. The production of a learner's language that cannot be categorized as either a first language or a target language (English) is called an interlanguage (IL). The focus of this research is to explore and study the literature related to interlanguage used by Indonesian at the age of teenagers (students in junior and senior high school), and interlanguage variability. Data collection techniques consist of; 1) checking the clarity of meaning and the results of previous literature searches, 2) grouping the data that has been collected according to the things discussed in the research, and 3) finding research using empirical data analysis referring to the previous relevant literature. The results show that NL and TL affect students' interlanguage production in all forms of grammar including phonology, morphology, and syntax. Furthermore, interlanguage variations can be explained by referring to individual learner factors, performance variations, and contextual factors.