Englishwordsareeasilyforgottenunles

发布时间:2020-07-27 07:16:03

English words are easily forgotten unless ________.A.constantly repeatedB.constantly repeatingC.are constantly repeatedD.to be constantly repeated

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A解析这是一个含有条件状语从句的主从复合句,从句为被动语态。当条件状语从句主语和主句主语相同且从句谓语含有助动词be,就可以省略从句主语和助动词be。本句意为:英语单词不经常重复是很容易忘记的。
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