This final project mainly aims to find out and identify errors made by students in the use of gerund, the kinds of students‟ errors and the most dominant error committed by students in the use of gerund.
In this research, the writer used quantitative method in the form of descriptive analysis (percentage) that included observation, collecting the students‟ test, and analyzing the data. For collecting the data, the researcher used test as the instrument. The subject of this research was the sixth semester students of the English Language Education Study Program of Universitas Muhammadiyah Purwokerto in the academic year of 2021/2022.
The result showed that there were three types of errors made by sixth semester students: omission, misformation, and addition. After computing the percentages of errors of each heading of gerund, it was found that the dominant error most often made by the students of the sixth semester of the English Language Education Study Program of Universitas Muhammadiyah Purwokerto is the error of misformation which occurred 676 times (97.4%). This means that the mastery of the students is still low because the errors were still high.
In conclusion, errors on the use of gerunds were still made by most students of the sixth semester of the English Language Education Study Program of Universitas Muhammadiyah Purwokerto in the academic year of 2021/2022. In relation to this, it is suggested that the English learners should be more careful in using grammar.