‘I Think That Australia Is a Nice Country’: An Interlanguage Analysis of An EFL Learner Studying in Australia

Studies on interlanguage in English learning in countries where English as a foreign language have been highlighted for decades. Interlanguage is the type of language produced by second-and foreign-language learners who are in the process of learning a language. This single‐participant study is intended to investigate and analyse the English competence of an Indonesian student who learns English as a foreign language. The study reveals that there are four major errors areas in the learner language, such as past tense, plural form‘s’, quantifiers, and subject-verb agreement. The source of the learner’s errors might be due to the interference of the learner’s first language, intralingual factors, incomplete application of rules in the target language, failure in comprehending the rules, and the learner’s communication strategies.