美国现代英文语言资料库

　　美国现代英文词语库(CorpusofContemporaryAmericanEnglish)是由美国杨百翰大学MarkDavies教授所开发的一个免费的语言资料线上搜寻引擎，是当今世界上最大的语言资料库，所有语言资料来自于美国英语使用情境下的这些文本口语演讲、小说书籍、杂志报纸、学术期刊。

　　COCA美国现代英文语言资料库从1999年创立至今依然持续更新，每年都要更新大约2000万的词汇数量，目前到2015年年底为止已经拥有5亿2000万的庞大词汇语料。即使有这么庞大的语料库，但COCA美国现代英文语料库搜寻的速度依然很快，瞬间就可以找到结果。在不需登录的情况下，每个用户每天可以使用10到15次的搜寻，或者你可以注册免费帐户，可以无限制的使用搜寻功能。

　　使用方法：进入网站后只要找到左方的搜寻栏位，在「words」中输入你要查询的英文单字或词汇或句子，就可以找到相关的语言资料。可以在来自小说、演讲、期刊等资料中，看到一个词汇或一段用语被如何使用的方式，找到更正式或更正确的变化。

American Modern English Vocabulary Database (CorpusofContemporaryAmericanEnglish) is a free online language search engine developed by Professor MarkDavies of Brigham Young University in the United States. It is the largest language database in the world. All language materials come from these texts, oral speeches, novels, books, magazines, newspapers and academic journals in the context of the use of American English.

Since its establishment in 1999, the COCA Modern American English language Database has been continuously updated, updating about 20 million words every year, and now has a huge vocabulary corpus of 520 million by the end of 2015. Even with such a large corpus, the search speed of COCA American Modern English Corpus is still very fast, and the results can be found in an instant. Without logging in, each user can use 10 to 15 searches a day, or you can sign up for a free account and use the search function without restriction.

Usage: after entering the website, just find the search field on the left, enter the English words or words or sentences you want to query in “words”, and you can find the relevant language materials. From novels, speeches, periodicals and other materials, you can see how a word or paragraph is used, and find more formal or correct changes.

CorpusofContemporaryAmericanEnglish是免费的语言资料线上搜寻引擎，目前已经拥有5亿2000万的庞大词汇语料，用户们还可以无限制的使用搜寻功能。