a和the区分.A horse is a useful animal.马是有用的动物The horse runs fas

A horse is a useful animal和The horse is a useful animal horses are useful animals/ a horse is a useful animal.马是有用的动 老师讲的是 A horse is a useful animal,但是有一本教辅书上原句写的是 The horse is the horse is a useful horse表示一类马,那可不可以the horses are useful The hourse is a useful animal.Horses are useful animal都是马是有用 a horse is an animal ( )horse is ( )useful animal. 英语翻译A farmer has a horse,One day.the farmer's horse runs awa Everyone understands that （） horse is （） useful animal A a;a A horse is a useful animal 两处为什莫都用a 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,anima 1.The dog is a useful animal.