"inform on" in Chinese (Simplified)
告发检举
Definition
秘密地向警方或当局报告某人，通常是关于他们做错或非法的事情。
Usage Notes (Chinese (Simplified))
多用于法律或犯罪语境，带有“出卖”或“背叛”负面含义。常与“警察”、“当局”搭配，不能与普通的“信息通知”混淆。
Examples
He refused to inform on his friends.
他拒绝**告发**他的朋友们。
The police asked her to inform on the gang.
警察让她**告发**黑帮。
He was afraid someone would inform on him.
他害怕有人会**告发**他。
If you inform on the others, the police might go easier on you.
如果你**告发**其他人，警方可能会对你宽大些。
Nobody likes people who inform on their friends just to save themselves.
没人喜欢那种为了自保而**告发**朋友的人。
She wouldn't inform on him—no matter what they threatened her with.
无论他们怎么威胁她，她都不会**告发**他。