区分frightening frightened
问题描述：
区分frightening frightened
1.His ……（frighten） shout scared the boys.
2.The girl let out a ……（frighten）cry at the sight of the snake.
3.……（frighten） looks appeared on their faces.
答
1,frightening
2,frightened
3,Frightened
frightening令人可怕的,修饰物,表示该物很可怕；frightened （自己本身感到）可怕的,惊恐的,表示人或动物的神情,面色显得害怕,用于修饰人或动物.