Résumé:
Vocabulary is essential in foreign language learning. Without having enough vocabulary
knowledge learners cannot communicate in their FL. In fact, learners are always trying to
expand their vocabulary using different ways. This dissertation investigates the different
modes of learning vocabulary (incidental and intentional learning) as well as the different
vocabulary learning strategies. In order to collect the needed information to accomplish
this study two questionnaires were administered. One questionnaire was administered to 60
EFL students at three universities: Mohammed Saddik Ben Yahya University of Jijel;
University of Contantine and Mila centre. The second was administered to ten teachers at
Mohammed Saddik Ben Yahya Jijel University. The results obtained from the analysis of
the questionnaire showed that: the majority of the learners use the intentional mode in
learning their vocabulary, and use dictionary as the best strategy to find the meaning of
new words. They showed that all teachers prefer to use both modes (incidental and
intentional) in their classes. However, according to the majority of them intentional mode
of learning vocabulary is the one that is more helpful
