A another，other，others
Have you met Bills sisters?
Ive met one.I didnt know he had another(sister).
Oh，he has two others/two other sisters.
你见过比尔的姐妹了吗?
我只见过一个。我不知道他还有一个(姐妹)。
哦，他还有两个呢。
B one another/other(s)，someother(s)
One student suggested a play，another(student)/other student/otherswanted a concert.
一个学生建议演话剧，另一个学生/其他学生/其他人希望开音乐会。
Some tourists/Some of the tourists went on the beach;others exploredthe town.
有些游客/游客中的一些人到海滩去了;其他人则到市里逛去了。
C one another，each other
Tom and Ann looked at each other.相当于：
Tom looked at Ann and Ann looked at Tom.
汤姆和安互相注视着。
one another和each other都可用于涉及两个或多个人或事物
的场合，但eachother常常用于涉及多个人或事物的场合。