boys是可数名词，意为男孩，男青年；
例句：I told the boys off for making so much noise.
孩子们太吵，我把他们训斥了一顿。
The school doesn't take boys.
这所学校不收男生。
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。
Most of the boys went straight into the services.
多数男生直接去服兵役了。
There is an equal number of boys and girls in the class.
这个班男女生人数相等。
I overheard a conversation between two boys on the bus.
我在公共汽车上无意中听到两个男孩的谈话。
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