adj.不好的,恶意的,有病的,不吉利的
adv.坏,不利地,令人不满地
n.伤害,困难,问题,弊端
She was so ill that she was put on a respirator.
她病得很严重,被戴上了人工呼吸器。
Her daughters visited him from time to time when he was ill.
他生病的时候她的女儿们时常去探望他。
"I'm afraid he's ill." — "I'm sorry to hear that."
“恐怕他生病了。”——“真是遗憾。”