This study aims at investigating Iraqi EFL students' ability in recognizing and using the syntactic structures of obligation. In order to achieve our aim(s) a test has been designed, and the data has been capture from undergraduate Iraqi EFL in College of Education, fourth year students' of Thi-Qar University, College of Education, Department of English. The sample of the our test consists of 70 Iraqi EFL University students wherein Arabic is their native language. Due to Covide 19, and its impact(s) on students' actual class attendance, the test was designed in Google form and then emailed to the investigated students. The subjects were provided with a test involving two questions. These question were designed to measure the investigated students' recognition and production levels. In terms of our investigation, the results show that the students face difficulties in their performances at both levels. . In the light of the results introduced in section "results and discussion" but we can say and according to our percentages their performance, at the recognition level is better than the production one.
Key words: Obligation, EFL, Errors analysis, mode &modality