查询结果:

[inˈfɔ:rm]

vt. 告诉,通知,报告 
vi. 告发,告密

拆分: in-使... + -form-使成形使一个思想或描述成形,告诉人某事。

搭配:
inform sb. of [about] 把…告知某人
inform against [on] sb. 告发某人

例:
I informed him of the news. 我已告诉他这一消息。
to inform against the criminals 告发这些罪犯
I beg to inform you that… 谨通知