Material de referencia en inglés

Cambridge Dictionary

This is the site of Cambridge University Press. It provides an English dictionary with definitions and synonyms, a learner's dictionary, an essential British English dictionary, an essential American English dictionary, and a grammar, as well as several bilingual dictionaries.

Cambridge English Language Assessment

Part of Cambridge University Press & Assessment, a department of the University of Cambridge, this site offers free activities and advice to students preparing for one of their exams, qualifications and practical resources to teachers to help them prepare learners for their exams, and support for organizations.

CNN International Edition

The website of the famous international television network offers a wide range of news stories and video reports from all over the world. It is very useful to learn about what is going on in the world while developing reading and listening skills.

Collins English Thesaurus

This online English thesaurus provides more than 500,000 words, meanings, phrases, synonyms, and antonyms of both British and American English.

Collins Free Online Dictionary

This site offers an English dictionary with more than 722,000 words, meanings and phrases, as well as their pronunciation, origin, synonyms, and usage examples. It also provides a thesaurus of both British and American English and several bilingual dictionaries.

Common Errors in English Usage

This page, within the website of Professor Paul Brians from Washington State University, provides a list of the most commonly confused words and phrases in English. It concerns mainly with deviations from the standard use of English as judged by sophisticated users such as professional writers, editors, teachers, and literate executives and personnel officers.

Corpus of Contemporary American English

This online corpus of American English contains more than 520 million words of text and is equally divided among spoken, fiction, popular magazines, newspapers, and academic texts. The interface allows you to search for exact words or phrases, wildcards, lemmas, part of speech, or any combinations of these, as well as for surrounding words (collocates) within a ten-word window, which gives you good insight into the meaning and use of a word. The corpus also allows you to easily limit searches by frequency and compare the frequency of words, phrases, and grammatical constructions.

Dictionary.com

This site, whose main proprietary source is the Random House Unabridged Dictionary, provides millions of English definitions, spellings, audio pronunciations, example sentences, and word origins. It also offers a translation service, a word-of-the-day section, and a crossword solver.

English Profile — The CEFR for English

This is a collaborative programme endorsed by the Council of Europe, designed to create a “profile” or set of Reference Level Descriptions for English, which provide detailed information about what learners can do in English at each of the six levels of the Common European Framework of Reference (CEFR), offering a clear benchmark for progress for English language learners. The site gives the background to the English Profile programme and provides access to resources, including the English Vocabulary Profile, which is a searchable listing of the words and phrases typically produced by English language learners at each level of the CEFR.

EnglishGrammar

This is a useful grammar website for both beginners and advanced learners of English who want to improve their writing skills in both personal and formal communications. It contains several articles related to each topic, videos, online exercises, and downloadable lessons.