There are 24 hours in a day这句话中主语等各是什么 分析下

There are 24 hours in a day这句话中主语等各是什么 分析下 there are 24 hours a day还是in a day ( ) ( )hours are there in a day? There are[ ]hours in a day There are （ ）hours in a day.用数词填空 How many hours are there in a day? 连词成句问题：are,in,there,day,a,24,hours There are _________ hours in a day.答案用twenty还是twenty-four呢?这 There are ( )hours of sunlight a day how many hours are in a day there are ------hours of sunlight a day in winter than in su 这句话的 主语谓语等句子成分帮忙分析下