I've been feeling ill since last week, so I am sorry that I can't go to your party.

我从上周开始就感觉不适，所以很抱歉我不能参加你的聚会。

youdao

Lie down on the couch if you're feeling ill.

如果你感觉不舒服就躺到沙发上去。

youdao

Today at 7am I woke up feeling ill, but decided I needed the money, so I went in to work.

今天早上7点，我起床的时候感觉很糟，但我需要钱，所以我还是坚持工作。

youdao

And the son says he has no ill feeling toward Russians.

VOA: standard.2010.05.07

Obuchi told doctors that he had awakened in the night feeling ill and tired.

CNN: Taking Over

He was so fit that he could spend up to ten hours in the water without feeling ill effects.

ECONOMIST: Joseph Wolfson

"In 1996 whilst serving in the Royal Navy on operations in Sarajevo, I began feeling ill and my symptoms included rapid weight loss, " he said.

BBC: Cancer 'ambassadors' Senedd lobby