adj.痛苦的；疼痛的；费力的
It was painful for him to renounce his son. 宣布与儿子脱离关系对他来说是很痛苦的。
His wife's death left a painful void in his life. 他妻子的死给他的人生留下了痛苦的空虚感。
The sting of a jellyfish is very painful. 让水母刺着是很痛的。
He gained the medal through his painful travail. 他通过艰辛的努力获得了奖牌。
painful用作表语时,其主语不能是人。
adv.痛苦地；苦恼地；费力地
