Résumé:
Vocabulary is an important skill in any language and a vital aspect of learning a foreign language. That is why teachers should be aware of the strategies used in order to help students. The research aims at examining the role of the teacher in increasing teaching vocabulary in English for specific purposes (ESP) learners by using different strategies. In addition, Public Health of Nurse (PHN) was chosen as a sample to do this research at the National Institution of Higher Paramedical Training of Mostaganem (NIHPTM). The research
requires gathering data from primary as (books) and secondary sources like (dissertation) so as to arrive with complete analysis of the role of teacher in teaching vocabulary. Moreover, the require data was collected by teacher’s interview and students questionnaire (qualitative and quantitative). The second year PHN was chosen during the academic year 2019-2020.
Furthermore, the resulting finding from the data collection in this research shows that teachers improve their role when differentiate in the strategies used in teaching vocabulary. The hypotheses are confirmed after gathering information and analyse it. Besides, the main points that this research focuses on are the role of teachers to increase teaching vocabulary and the role of the institution to help them in doing their role appropriately.