PHRASAL VERB 告发;检举;告…的状 If you tell on someone, you give information about them to a person in authority, especially if they have done something wrong. 告发;检举;告…的状 [informal]
Never mind, I won't tell on you. [VERBPREP. noun]
别担心，我不会告发你。
I'll tell my mummy on you. [VERB noun PREP. noun]
我要到妈妈那儿告你一状。
SYN inform on, shop [British, informal], give someone away, denounce