英语句子：是one third them还是one third of them?这两个有什么区别?

英语数词的写法什么时候带“-”one-third one third 有什么区别? 英语1/3是one third还是one-third,有没有连字符? one of them one of which有什么区别? one third和one thirds有什么区别 one-third of z one third of one ...another...a third...还是the third a third与one third 有什么异同 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 of them ,one of whom 区别 "one third" or "one-third" ? one of whom 和one of them/those 有什么区别,分别在什么情况使用