be后面加什么词性的词名词,形容词,副词,动词?为什么they were so frightful错,是形容词.they were so frightened.对,是动词?
问题描述：
be后面加什么词性的词
名词,形容词,副词,动词?为什么they were so frightful错,是形容词.they were so frightened.对,是动词?
答
frightful是指可怕的（事情）,说的是事物的性质
frightend 是指感到可怕的,是有生命体的感受