不定代词做主语是谓语动词要用单数形式,例如:
Is everyone here?
There is nothing to do today.
Everyting goes well.
另外不定代词有很多,指人或者指物,something,anything,someone,anyone,somebody,anybody,nobody等等,所有不定代词做主语,谓语动词用单三形式。