为什么 three quarters of the population 的be动词用are?

Three quarters 为什么不是Third quarters呢？ three quarters of the earth is water为什么用is three quarters of the earth is water 为什么用is three quarters同义词 three quarters的理解 three-quarters of an three-quarters of an three-quarters 是说中长吧~ three-quarters of abillion是多少? for three quarters of an 四分之三A) three quarters B)three-quarter C)three fourths 选A,为什么BC错? three and three quarters 啥意思 most three quarters of the earth is water为什么用is是因为水是不可数的还是因为three quarters of the earth是一个整体? 为什么Three quarters of the population are Chinese.此句中动词用复数are? 为什么 three quarters of the population 的be动词用are? three quarters of the population are chinese,为什么chinese不是复数,而indian后要加s three quarters of a million or one and three quarter million 为什么一个quarter加s一个quarter没有s 3/4的英语?three quarters? three quarters of one precent是多少?