AbstractThe study was conducted to identify the common errors in the use of past tense forms made by Kurdish learners of the English language when writing essays and to investigate the factors that influenced these errors and how the Kurdish first language affect the process of learning the English language. The participants in this study were from the English Department, Faculty of Humanities, University of Duhok. A total of 29 students participated in this study. All the errors were identified and classified into various categories. The results of the study showed seven most common errors in the use of past tense form committed by the participants. These errors were simple past, past progressive, past perfect, past passive, future in the past, irregular verbs and regular verbs. The findings also showed that the errors committed were influenced by the use of the participants‟ first language and intralingual factors. On the basis of these findings, the researcher discussed some pedagogical i.....