Assuming Bakhtin's conception of language, this paper discusses the educational praxis of language teaching to deaf students. The construction of subjectivity is considered by the author as a product of dialogical and dialectic work in which the "other" has an essential co-author status. During the process of language construction, the subject takes part of a rich network of enunciations which are always historically and socially determined. My goal in this study is to focus on the linguistic co-partnership of this "other" in the reciprocal process of teaching and/or learning two different languages, Sign Language and Portuguese, by Deaf students.