afternoon是可数名词吗

afternoons例句：

She studies art two afternoons a week.

她每周两个下午学习艺术。

Afternoons he works at home.

每天下午他在家里工作。

A series of discussion groups has been timetabled for the afternoons.

一系列小组讨论已安排在各个下午进行。

She toddles down to the park most afternoons.

多数下午她都溜达着去公园。

We passed long, hot afternoons pitching a baseball.

我们通过投棒球玩打发了一个个漫长、炎热的下午。