1 (used with singular nouns 与单数名词连用) all of the people or things in a group of three or more （三个或以上的人或物中的）每一个，所有: She knows every student in the school. 校内每一个学生她都认识。There are 200 students in the school, and she knows every one of them. 学校有200个学生，每一个她都认识。I've read every book in this house. 这房子里的每一本书我都看过。You were out every time I phoned. 每次我打电话给你，你都不在。 ☞Look at note at everybody. 参看 everybody 的注释。

2 all that is possible 充分；所有可能的: You have every chance of success. 你完全有可能成功。She had every reason to be angry. 她实在应该生气。

3 used for saying how often sth happens （用于表示某事发生的频率）每: We see each other every day. 我们每天都见面。Take the medicine every four hours (= at 8, 12, 4 o'clock, etc). 这药每四小时服一次。I work every other day (= on Monday, Wednesday, Friday, etc). 我隔天工作。 One in every three marriages ends in divorce. 每三起婚姻就有一起以离婚收场。