句子成分到底是 students是主语还是 one-third 为什么书上说是数词做主语呢one-third of th

句子成分到底是 students是主语还是 one-third 为什么书上说是数词做主语呢one-third of th One-third of the students in this class are girls.这句中的主语为什么是 One third of the students __(be)in the class.句子的主语是?be根据什么变换 one third of people做主语时,谓语用单数还是复数?two thirds of people做主语时,谓 the one of the students做主语 One-third of the students in this class are girls.求句子成分分析, 英语1/3是one third还是one-third,有没有连字符? one-third of z one third of one ...another...a third...还是the third one-third of the three apples后面是is 还是are "one third" or "one-third" ?