Dicionários disponíveis on-line para aprendizes de inglês: estrutura？？o e recursos

the objective of this paper is to describe the structure and methods of accessing online electronic dictionaries available to students of english language. the content and resources of two monolingual dictionaries and two bilingual ones have been compared: cambridge advanced learner's dictionary (cald, 2009), merriam-webster learner's dictionary (mwld, 2009), reverso dictionary english/portuguese (rdep, 2008) and wiktionary inglês/português (wip, 2009)