by
Gordon (Guoping) Feng, Mark Davies
Language: English
Release Date: April 22, 2017
Starting from 1990, Corpus of Contemporary American English (COCA) picks 20 million words of English text and speech each year, and now contains more than 520 million words. Based on COCA, this series of The Graded Wordbook of 52,000 Words are grouped in 1,000 words and lead ultimately to 52,000...