in public 还是in the public

问题描述:

in public 还是in the public

Deny is capable of play the piano in public.丹尼斯能够在大众面前弹奏钢琴.
Children are playing in the public square.孩子们在公共广场上游戏.
试比较以上句子,看出什么了吗?
in public 当众,公开地,公然地 (固定词组)
men don't cry in public.男人当众不流泪.
the public eye (尤指通过媒体)公众关注度,众所熟知
the pressures of being constantly in the public eye.总在公众眼皮子底下的压力.
in the public 并不是一个固定词组,而 in 是作为介词修饰the public eye.
现在请再看最先给出的两个句子,能理解了吗?