collective noun : 1 用于复数的词people capital police ....2用于单数的词 leafage equipment furniture 3用于单数或复数的词audience commitee class crew family government (具体看它是否指的成员)但特例:a people 一组人 the commitee \ board of 后跟 谓单 。
coordinate words: 1必须合起来用的例如刀叉 ham and eggs 用谓单2 and连接的every many a each 用谓单3 or either or neither or 就近原则