Bouslah, KeltoumArrouf, Samira2018-03-192018-03-192014http://hdl.handle.net/123456789/2550This study aims at investigating the effect of teachers' code-switching on vocabulary learning, in the case of first year LMD students at the department of english, at Larbi Ben M'Hidi university, Oum-El-Bouaghi. The main purpose of this study was to test our hypothesis that's why a quasi-experiment- with three phases: a pre- test, an instructional treatment phase, and a post test-was conducted in which there were two groups; experimental and control group; where the experimental group was taught vocabulary switching codes from english to the native language, while the control group was taught vocabulary extremely in english. As the quasi experiment required, a pre-test was administered, in which participants were testedenEnseignement langue (anglais) : EFLTeaching : english : EFL : vocabularyOther