摘要：This research was conducted in the city of Semarang with a case study of Diponegoro University. The study shows that a syntax error in the form of a sentence is not complete, the use of the word di mana (which) it is not appropriate, the construction preposition owner, the use of the word yang (that), the error sequence of words, sentences without a subject and object, misuse of conjunctions and prepositions, improper use of the passive or active voice, foreign language interference, and misuse of pronouns. The factors causing the error are the influence of the mother tongue, the limited repertoire of the students, and the lack of practice in speaking and writing in Indonesian. To overcome these obstacles, a curriculum design that emphasizes language skills is required; accompanied by Semester Learning Plans for all learning subjects along with textbooks and the learning methods used are emphasized on communication skills. An Indonesian language learning process for foreign speakers will be more successful if it involves environmental, cultural, and local wisdom factors that are carried out in an integrated manner.
