new grammars and dictionaries now provide better pedagogical tools for teachers of English as a foreign language (EFL).

dictionaries and grammars which are based on corpus research tend to include the many mistakes that native speakers make.

new pedagogical models are much better organized nowadays due to the use of computerized language corpora.

many traditional dictionaries and grammars for learners of English have been revised with the help of computer corpora.

corpus research has shown that real language use does not always follow the rules traditionally prescribed in traditional course books.