Perhaps he is ill.

或许他病了。

youdao

I supsect he is ill.

我猜想他病了。

《新英汉大辞典》

He is ill, please call a doctor.

他病了，请你请一位医生来。

youdao

Two hundred seventy people were killed in the attack. Opposition Scottish Labor leader Iain Gray was blunt in his criticism of Justice Secretary Kenny MacAskill, who made the call to allow Abdel Basset al-Megrahi to leave prison and return home to Libya on compassionate grounds because he is terminally ill.

VOA: standard.2009.08.24

What he means is that we are ill because we do not cultivate what we are about enough.

他是说，我们正在生病，是因为我们没有,尽力做好我们本该做到的事。

哈佛公开课 - 幸福课课程节选

In particular, what happens is he is given a drug that makes him violently ill, extremely nauseous.

具体情况是这样的，在治疗过程中，心理学家喂他吃一种药,使他变得难受至极，特别恶心。

耶鲁公开课 - 心理学导论课程节选

An unheralded weekend session of parliament lifted his immunity and he was put in jail, where he remains, despite doctors' pleas that he is dangerously ill.

ECONOMIST: Egypt

In either case, he is being ill-served by his staff.

FORBES: Deflation Dissected

Investigators were trying to determine whether he is mentally ill, and if the motive for the alleged attack might fall under the legal definitions of domestic terrorism, a hate crime or something else, law-enforcement officials said.

WSJ: Guard Shot at Family Research Council Headquarters