This study aims to investigate the formation of interlanguage in the acquisition of written Portuguese by deaf students. For this purpose, the aspectual category is the main object of analysis, as set forth in the theoretical proposals from Jake (1998), White (2003), Ilari (1997), Castillo (1995), among others. The research results indicate the formation of interlanguage in the second language acquisition process, as well as the influence of the period in which students came in contact with Brazilian Sign Language (Libras) for the grammatical organization of the target language. These results support the hypothesis that it is important for deaf students to have access to written sign language as a tool for learning the written form of the spoken language.
Second language acquisition; Interlanguage; Libras; Written Portuguese; Aspect