英语1/3是one third还是one-third,有没有连字符?我看到书上有的

英语1/3是one third还是one-third,有没有连字符?我看到书上有的 英语句子：是one third them还是one third of them?这两个有什么区别? one percent of 100 sheep 是单数还是复数?RT那么 one third of 3 sheep one ...another...a third...还是the third one third one third one third 英语数词的写法什么时候带“-”one-third one third 有什么区别? one third of one-third of z one- third less than by one-third什么意思He has to cut down on family expenses by one-third这句话里by one-third是指减少到三分之一还是减少了三分之一? one-third of the three apples后面是is 还是are There is one third student ____ girls.是用is 还是用 are?why? one third 中间有-吗为什么有些写法是one-third ,到底哪个对? one third of student are还是is girls? one direction 说的是英语还是美语? 英语中one conditional,second conditional,third conditional