This study is an investigation into the contribution of the use of bilingualism as an aid in learning/teaching English as a foreign language and bilingualism in EFL classroom does not reduce students' communicative abilities but in effect can assist in teaching and learning process. The study employed a qualitative, interpretive research design involving questionnaires, classroom observations and semi-structured interviews. The data part analyzed the students and the teachers' expressed responses and beliefs about the role of bilingualism in EFL classes. The findings of the study in general are that bilingualism as a resource in teaching facilitates in learning L2 and helps make more people acknowledge the contribution of bilingualism in EFL classes.