divide into 后面加基数词three 还是序数词third

问题描述:

divide into 后面加基数词three 还是序数词third

threeMother divided the cake into thirds。妈妈把蛋糕分成三份。请解释一下这里是序数词third的特殊用法,为复数形式thirds,意思是 均等的三份,和divide into 是没有关系的。而divide into后面也的确可以跟基数词。如 5 divides into 30 是5除30 的意思。