Résumé:
The issue of language interference has become more and more popular, especially in
foreign language classroom. English as a foreign language learners used their first language as
a tool to learn the target one. Thus, achieving a satisfactory level in English writing is the
primary objective of both teachers and students. However, the majority of first year students
are unable to reach this objective, because they commit different errors when writing. The
current study aims at identifying the impact of first language among first year university
students’ writing at the Department of English; Abdelhamid Ibn Badis, university of
Mostaganem, in order to answer the research question; how does the mother tongue affect
first year students’ writing?, and confirm or reject the hypothesis; the mother tongue
interference affect students’ writing negatively. For that purpose,the mixed methods were
adopted; data were gathered via two questionnaires administered to 25 students and 15
teachers of written expression module at The English Department, in order to survey their
opinions about the influence of the mother tongue on English writing, in addition to fourteen
(14) short paragraphs that have been collected for an errors analysis. The tools have been used
to confirm the results obtained in this study. The results have shown that first year EFL
students commit different types of errors, due to two reasons which are interlingual and
intralingual. However, most of the errors occur in the learners’ productionsare mainly due to
their mother tongue (Arabic) interference. On the light of thisresult, the earlier stated
hypothesis is successfully confirmed.