a. Total match_count of every decade in the English 2012 version of the Google Books corpus (total match_count refer to the total number of words).

Figshare2022-01-04 更新2026-04-28 收录

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b. Relative Frequency of English Modal verbs in the Google Books corpus (per million words).

b. 谷歌图书语料库（Google Books corpus）中英语情态动词的相对频率（每百万词）

创建时间：

2022-01-04