英语不定冠词,急A horse is a useful animal.这句话中为什么要在useful前加冠词,animal前为什么不用加,不懂

英语不定冠词,急A horse is a useful animal.这句话中为什么要在useful前加冠词,animal前为什么不用加,不懂 英语不定冠词什么时候用不定冠词a什么时候用an? This is a horse in English.(对 a horse 提问) ----elephant is mush stronger than----horse.正确答案是An,a 为什么不能是The,the马是一种有用的动物可以这样表达：A horse is a useful animal.The horse is a useful animal.Horses are useful animals.既然定冠词和不定冠词 英语翻译A word is not a horse! An elephant is ( )(big) than a horse. there is a baby horse over there. He is as strong as a horse. 英语不定冠词go on a diet diet 前面为何加不定冠词 不是名词可数才加不定冠词, The night of the horse is a famous tale in history.同义句【急~ 不定冠词a an用法 a是不定冠词吗 a zebra horse(an animal that is a cross between a zebra and a horse) A fresh horse is a horse that is ____young strong newly fed 英语同义句转换 he is drawing such a beautiful horse on the blackboardhe is drawing such a beautiful horse on the blackboard同义句 He is drawing _ beautiful _ horse on the blackboard 马是一种动物 用英语怎么说两个句子哪个对?A horse is an animal.The horse is an animal. 什么时候英语单数名词不加不定冠词a,an呢? 英语上的不定冠词a 、an 是怎么用法的?