文档介绍：1 Word Frequency List of American English Mark Daviesand Dee Gardner ? 2010 These are entries 1-20,000 from the frequency lists that are available from o. They are based on the 400+ million word Corpus of Contemporary American English(COCA), which is the only large, recent, and genre-balanced corpus of American English. Due to the characteristics of the corpus on which the data is based, you can be sure that the words that you find here are ones that you would encounter in the "real world". Because the entries are arranged in order of frequency, you can maximize your study of English vocabulary in a way that is probably not available with any other resource. Other frequency lists are available from o, including 5,000 and 10,000 word lists that have the same format as this one. In addition, it is possible to purchase frequency and collocates lists that contain 200-300 collocates for each word (compared to the 20-30 here), for a total of about 5,000,000 collocates for the20,000 word list. Unlike this PDF version, the expanded collocates lists allow you to edit, copy from, and print from the the other hand, those versions are not formatted as nicely as what you have here, they are more expensive, and they are designed mainly for use by (computational) linguists. In additionto the frequency lists, you can also purchase complete 2-gram and 3-gram lists from the entire 400 million word corpus, containing more than 100 million n-grams. You can also purchase a printed(book) version of the entries 1-5,000, which was published by Routledgein 2010 as the Frequency Dictionary of American English: word sketches, collocates, and thematic lists.(Note that this list has about 30-40% fewer collocates for the words 1-5,000 than in the printed book, because of a copyright agreement with Routledge in which we promi