three quarters的理解

Three quarters three quarters 和three fourth的区别和用法 three quarters同义词 three-quarters of an three-quarters of abillion是多少? for three quarters of an three full quarters是什么意思啊 three and three quarters 啥意思 为什么 three quarters of the population 的be动词用are? three quarters 之类的后接可数和不可数名词谓语动词用单数还是复数? three quarters of用什么提问 three quarters of all Americans是什么意思?