ill的音标是 ɪl。

ill 作为形容词时，主要意思是“生病的；不健康的”，也可表示“坏的；有害的”。作为副词时，意思是“坏；恶劣地；不利地”。作为名词时，意思是“困难；麻烦；疾病”。

短语搭配：
fall ill 生病
be taken ill 病倒
ill at ease 不自在；不安
ill effects 不良影响
ill health 健康状况不佳
ill fortune 厄运
ill will 恶意

相应英文带中文翻译的例句：
1 He is very ill and unlikely to recover。他病得很重，不太可能康复了。
2 She felt too ill to go to work。她觉得病得太重没法去上班。
3 The business has been affected by the ill effects of the recession。企业受到了经济衰退的不良影响。
4 He resigned because of ill health。他因健康状况不佳而辞职。
5 She suddenly fell ill and had to cancel the trip。她突然病倒了，不得不取消行程。
6 He was taken ill during the meeting。他在会议期间病倒了。
7 She felt ill at ease at the formal dinner。在正式晚宴上她感到很不自在。
8 He bears you no ill will。他对你并无恶意。
9 The project was plagued by ill fortune from the start。这个项目从一开始就厄运连连。
10 He spoke ill of his former colleagues。他说他以前同事的坏话。