20thcentury address bilingualism canaryislands communicationandculture computer-assistedinstruction conversationandphrasebooks discourseanalysis english exercises foreignlanguagestudy formsof grammar influenceonspanish interculturalcommunication languageandculture languagesincontact latinamerica mayalanguage mexico nonfiction person pragmatics problems pronoun provincialisms research secondlanguageacquisition self-instruction socialaspects spanishlanguage studyandteaching textbooksforforeignspeakers variation vos(thespanishword) yucatánpeninsula