ill就是完整形式。
adj. 生病的坏的邪恶的不吉利的
adv. 不利地恶劣地几乎不
n. 疾病不幸I felt ill so I went home.
我感到不舒服，于是就回家了。
Lee was ill so I went instead.
李病了，所以我去了。
The patient is terminally ill.
这个病人病入膏肓。
He fell ill and died soon after.
他病倒不久便去世了。
She was taken ill suddenly.
她突然病倒了。
Most of them were chronically ill.
他们中大部分人都有慢性病。
