测振仪器使用方法:fewer less

less ,fewer fewer less fewer,less,more,a fewer,a little之间的用法 用less和fewer各造五句话 英语问题关于fewer and fewer,less and less,smaller and smaller,litte and little There are less than 50 students in our class.这里为什么不用fewer而用less than呢 less than two months中把less than替换littlemore than与fewer than哪个对,why? less than two months中把less than替换a littlemore 与fewer than哪个对,why? 怎么划分这些单词的音节:robot,paper,use,less,fewer,pollution,tree,building,astronaut,rocket 1.little 与a little的区别 2.less\than\fewer他们的区别是啥？