似乎是singular collective noun

在dictionary.com上的例句里有一个是这样的：

• It is a community event in which the audience joins in singing, clapping and dancing.

所有跟帖： 

• yes, generally speaking we should use is rather than are.Thank y -sportwoman- ♀ (4925 bytes) () 11/03/2012 postreply 16:42:45

• 学习了, 谢谢! -tingfeng- ♀ (0 bytes) () 11/03/2012 postreply 16:46:57

• thank u 4 sharing. -sure- ♀ (0 bytes) () 11/04/2012 postreply 01:18:24