This article mainly aims at examining the use of phrasal verbs in the written discourse of Omani student-teachers. The participants of the study composed of three groups: first-year student-teachers, fourth-year student-teachers, and a group of native speakers. Two production tests and one recognition test were presented to the participants to find out if they could produce and recognize phrasal verbs, especially idiomatic ones. The results of the study showed that phrasal verbs were rare or non-existent in Omani students' writing. Hence, the researchers identified implications and provided recommendations through which Omani learners of English can be helped to use phrasal verbs efficiently in their communication.