2018-04-232018-04-231995-12FIGUEIREDO, Francisco José Quaresma de. Aquisição e aprendizagem de segunda língua. Signótica, Goiânia, v. 7, n. 1, p. 39-57, jan./dez. 1995. Disponível em: <https://www.revistas.ufg.br/sig/article/view/7380/5246>.0103-7250http://repositorio.bc.ufg.br/handle/ri/14589ln this papcr we present the most significanl theories about second language acquisition and second language leaming. We give emphasis to Krashen's theory for it deals with both of thcse processes. Wc also reflect on the use of such theories in the second language teaching/leaming process.porAcesso AbertoArtigo10.5216/sig.v7i1.7380