hero是可数名词；
hero
n.英雄，豪杰(尤指男性);(故事、小说、电影等的)男主人公，男主角;崇拜的对象，偶像(尤指男性)；
复数 heroes
He was treated as a hero on his release from prison.
他获释出狱时被当成英雄看待。
The hero of the novel is a ten-year old boy.
这部小说的主人公是个十岁的男孩。
The hero makes his entrance in Scene 2.
男主角在第2幕出场。
