ill名词形式为illness.

illness：n.(身体或精神上的)疾病，病;(某种)病;患病期.

扩展资料

You may find your illness hard to accept.

你可能觉得难以接受自己患病。

The term 'mental illness' is difficult to define.

“精神病”这个词很难下定义。

The illness can be treated provided it's caught early enough.

此病若及早发现是可医治的。

ill加名词ness,即illness。