Abstrak
Afifah Mardhiyah (2316072) “An Analysis of Morphological Error in Writing Analytical Exposition Grade XI SMA N 3 Bukittinggi, A Thesis, State Islamic Institute of Bukittinggi, 2021. This research background was trigerred by students’ error at Grade XII of SMA N 3 Bukittinggi. Firstly, the students wrote “fast food is not good for healthy” she put bound morpheme “y” at the end of the word “health” which was wrong. Secondly, the students cannot place the morpheme “the, a, an, or of” correctly. For example, “a hour” instead of “an hour” or “a student” instead of “the student”. The research questions of this research are what is the morphological error that students make in their analytical exposition text and what are the dominant errors that students make in their analytical exposition text. The purpose of this research were to find out the morphological error that student’s make in their analytical exposition text and to find out the dominant errors that students make in their analytical exposition text. This research used a descriptive quantitative research method with grade XII students as the research population. There were 32 students taken as the research sample selected through purposive sampling technique. The data were collected through writing test. In the writing test, the researcher gave the students instruction to write analytical exposition consists of three paragraphs each paragraph should be filled by six sentences. The students asked to write it relates to the theme that the reseacher gave. After that, the researcher collected the students’ test. The results of this study showed that students’ morphological error in written analytical exposition at grade XII of SMA N 3 Bukittinggi were 308 errors. It shown that, firsly, in omission type, there were 45% of total errors. Secondly, there were 23% of total errors in miss-ordering. Lastly, there were 16% of total errors both addition and miss-formation type.