53.    another, other, others with one and some

A.     another, other, others

Have you met Bill's sisters? ~ I've met one I didn't know he had another (sister). ~ Oh, he has two others/two other sisters.

B.     one . . . another/other (s), some . . . other (s)

One student suggested a play, another (student)/other students/others wanted a concert.

Some tourists/Some of the tourists went on the beach; others explored the town

C.     one another and each other

Tom and Ann looked at each other = Tom looked at Ann and Ann looked at Tom

Both one another and each other can be used of two or more, but each other is frequently preferred when there are more than two.