/ɪn'fɔ:m; ɪn`fɔrm/
v
1 [Tn, Tn.pr, Dn.f] ~ sb (of/about sth) give sb knowledge (of sth); tell sb 通知或报告某人（某事）; 告诉某人
*`Some money is missing.' `Have you informed the police?' ｀有些钱不见了.＇｀你报告警方了吗?＇
* Keep me informed (of/about what happens). 有事随时通知我.
* inform oneself of the facts, ie find out all that needs to be known 使自己了解事实
* He informed the police that some money was missing. 他向警方报案说有些钱不见了.
2 [Ipr] ~ against/on sb (law 律) give evidence or make an accusation against sb (to the police) （向警方）告发或检举某人
*One of the criminals informed against/on the rest of the gang. 有一罪犯告发了同党.
3 [Tn] (fml 文) give (sth) its essential features; pervade 赋予（某事物）其特徵; 贯穿; 遍及
*the sense of justice which informs all her writings 体现在她所有写作中的那种正义感.

v [T]formal
[Date: 1300-1400; Language: Old French;Origin: enformer, from Latin informare 'to give shape to', from forma; FORM¹]
to formally or officially tell someone about something or give them information
inform sb about/of sth
　Please inform us of any change of address as soon as possible.
inform sb (that)
　We regret to inform you that your application has been rejected.
　They decided to inform the police.
formal to influence someone's attitude or opinion
　Her experience as a refugee informs the content of her latest novel.
inform on/against [inform on/against sb] phr v
to tell the police or an enemy information about someone that will harm them
　He denied that he had ever informed on his neighbours.