not every not all not both 区别

not every 表示部分否定,中文是“并非每个人都.”.如：Not every students went to Beijing last year. 并非每个学生去年去了北京.not all 表示部分否定,中文是“并非所有人都.”,跟not every是一样的,如： Not all the students went to Beijing last year. 并非所有学生去年去了北京.Not both 表示部分否定,中文是”并非两个都.“,强调是两个人或物,如：Not both of his sons like swimming. 并非他的两个儿子都喜欢游泳.