among是英语中表示“在……之中(三者或三者以上)”的介词，核心用法和易混点一次性给你讲清。
一、基本意思与范围
意为“在……中间/之中”，宾语必须是三个或更多事物/人的复数，或集合名词。
例：
The book is among the papers on the desk.(书在桌上的文件堆里。——文件不止两份)
She is popular among her classmates.(她在同学中很受欢迎。——同学≥3人)
二、和 between 的区别(最常考)
between：主要用于两者之间，也可用于“多个独立个体两两关系”时(between A, B and C)。
among：用于三者及以上混在同一群体里，不强调一一对应。
对比：
Divide the candy between the two kids.(俩孩子分)
Divide the candy among the five kids.(五个孩子分)
There’s a secret between Tom, Jerry and me.(我们三人两两之间有默契/保密约定，可用between)
There’s a rumor among the students.(学生群体里流传，用among)
三、常见搭配
among others / among other things
意为“其中还包括……”(列举时补一句)
He loves music, painting, among other things.
among themselves / yourselves / us
表示“在……内部互相”
They discussed it among themselves.
be popular / famous / common among sb
Yoga is common among office workers.
4.写位置：在……包围中
The village lies among the hills.
四、语气与引申义
可表“之一是……”(= one of)
Among his hobbies is fishing.(他的爱好里有钓鱼。)
可表“经众人商议/分配”
The decision was made among all members.
五、易错提醒
错：不可用于两者：between the two books对，among the two books错。
错 后面不直接接单数可数名词(除非是集合名词如 the crowd, the team)：among the tree错，among the trees对。
对：可用于抽象群体：among the poor / among the stars(明星中)
六、速记口诀
“三者以上用 among，两者之间 between;群体中间藏东西，popular 后面常跟着。”
