The students’ ability in using modal auxiliaries at grade XI student SMA Negeri 4 Padangsidimpuan

This research is about the students’ ability in using modal auxiliaries, and the problems are the students’ability got difficulties in using modal auxiliaries, and not understand the patterns and the using of tenses, mastery of vocabulary is low, and training auxiliaries is not interesting.The aim of the research is to know students’ Ability in using Modal auxiliaries at Grade XI students’ SMA Negeri 4 Padangsidimpuan. In this research, researcher used quantitative approach in the type of the descriptive method. There were 59 students as sample of the research at grade XI students SMA Negeri 4 Padangsidimpuan. In collecting data, the researcher used essay test for students, the essay test consist of 15 items. The researcher used. Z test for analyzing data. Based on the result of research, researcher found that the Students’Ability in Using Modal Auxiliaries at Grade XI Students SMA Negeri 4 Padangsidimpuanwas enough ability, it was 70.86 category. Then, the hypothesis was accepted by using Z- tes