boy和girl是可数名词吗

都是可数名词。

girl的复数girls

n.女孩;姑娘;女儿;年轻女子;女郎；

boy的复数boys

n.男孩;男青年;年少的儿子;做某工作的男孩(或小伙子);伙计

There were two little girls, one Asian and one with blonde hair

那里有两个小女孩，一个是亚洲女孩，一个是金发女孩。

He had made a friend of both girls.

他和两个女孩都成了朋友。

Two boys were ahead of us.

有两个男孩在我们前面。

They have two boys and a girl.

他们有两个儿子和一个女儿。

The school doesn\'t take boys.

这所学校不收男生。