Résumé:
This study investigates the use of Discourse Markers (DMs) in the oral and written discourses 
of third year EFL learners  at the University of 8 Mai 1945, Guelma, Algeria. To carry out this 
research, a descriptive method is followed to analyze the written compositions and the oral 
presentations of the participants. Data are gathered through collecting 26 essays and observing 
the participants‟ oral presentations, then, analyzed according to Fraser‟s taxonomy (1999) of 
discourse markers. The study found that students extensively overuse the elaborative 
discourse markers over the other markers (contrastive, inferential, and topic change markers) 
in  both oral and written discourses. It is also revealed that students do not fully master the 
appropriate usage of discourse markers. They extensively misuse them in the pattern of 
overuse. Moreover, students show a tendency to overuse discourse markers  and  misuse them 
in the oral discourse more than  in the written one. On the basis of these results, this inquiry 
proposes some recommendations and suggestions for students to aid them master the 
appropriate use of discourse markers to realize a cohesive and coherent oral and written 
discourse.