howmany是问句,后面应该跟"arethere",不是"thereare"..howmany=多少(个)?thereare=有加起来=____有多少?这个就多了...派对有多少人=howmanypeoplearethereintheparty?袜子有多少双=howmanypairsofsocksarethere?架子上有多少书=howmanybooksarethereontheshelf?