eighty percent还是eighty percents如题,网上两种形式都用,各自有什么区别?为什么这样用?顺便问一下no teacher 是应该no teachers吗?

请问打八折是twenty percent discount 还是eighty percent discount ? 使用and还是or?Most students in the class score eighty percent and（还是用or?）above,but john is the exception.为什么?薄冰语法中是用and， population做主语Eighty percent of population__farmersA are B is eighty percent还是eighty percents如题,网上两种形式都用,各自有什么区别?为什么这样用?顺便问一下no teacher 是应该no teachers吗? 八五折的英语是什么discount of eighty fivediscount of eight point fivediscount of eighty five percent eighty ten percent more还是ten more percent Between 1950 and 1990,the world population doubled to 5.3 ________.Nearly eighty ________ of these people live in developing,or poorer nations.A.billion; percent B.billion; percentage C.billions; percents D.billions; percent 是A还是B,有什么区 what percentage还是what percent? 百分之50是fifty percent还是fifty of percent percent是一个词还是两个词 percent?per cent? 连词成句of,the,four,times,eighty——five,percent,watch,students,TV,week,a short of 40 percent 意思是说不足40 percent还是说差40 percent? what percentage还是what percent?例句THX 30% 是thirty percent 还是thirty percents? 89分之33 英语怎么说,就是到底是不是thirty-three over eighty-nine...还是thirty-three eighty-ninths mushroom soup and salad to strat and steak as the main courese牛肉5分熟是说 medium 那8分熟 怎么说?eighty percent? 100%用英语怎么说?one hundred percent 还是 a hunderd percent