2、复数可数名词、不可数名词前不用冠词,表示泛指; 如:Horses are useful animals. (思考: A horse is useful. / The horse is a useful animal) 3、称呼语或表示头衔的名词前不用冠词; ○1. We made him president of USA. ○2. Who’s this, Mother? 4、球类运动、...