Students error analysis is very important for helping English as a
Foreign Learners (EFL) teachers to develop their teaching materials,
assessments and methods. The study aims to describe and analyze the students
grammatical error in the use of simple present tense, and the cause of errors by
the eleventh grade students of Senior High School (SMAN) 4 Bandar Lampung
in the school year of 2018/2019. This is a kind of descriptive qualitative study,
in which the data consisted of students’ sentences containing errors in the use
of simple present in the text of analytical exposition, viewed from Linguistic
Category Taxonomy (LCT). The study discovers that there are five types of
errors based on LCT. They are errors of noun phrase verb phrase, verb-andverb
construction, word order and transformation. Moreover, the causes of
error most widely performed are subsequently performance fault,
overgeneralization, markers of transitional competence, teacher-induced error,
scheme of communication and assimilation, interference
