1.more than one +N(单数)
但是表示复数 译：不止一个
More than one person is involved in this.
与此事有牵连的人不止一个.
2.类似的,“many a + 单数名词”也用单数动词.
e.g.:
Many a famous pop singer has been ruined by drugs.
很多著名的流行音乐歌手都因吸毒而毁了自己.