"tell on" in Chinese (Traditional)
告發打小報告
Definition
向有權威的人（如老師或家長）告發別人的不當行為或祕密，這個片語多用於孩子之間。
Usage Notes (Chinese (Traditional))
"Tell on" 為非正式用語，多用於兒童之間。常見例子如：'Don't tell on me!'，'He told on his sister.' 正式語境可以用 'report' 或 'inform on'。有時有負面或不忠的感覺。
Examples
Please don't tell on me to the teacher.
請不要向老師**告發**我。
He told on his friend for breaking the window.
他因為朋友打碎窗戶而**打小報告**。
Kids sometimes tell on each other to get out of trouble.
孩子們有時會互相**告發**來避免麻煩。
If you tell on your brother, he'll get really mad at you.
如果你**告發**你哥哥，他會很生氣的。
She threatened to tell on him if he didn't help her.
她威脅如果他不幫忙就要**告發**他。
Nobody likes it when you tell on your friends just to avoid blame.
大家都不喜歡你只是為了逃避責任而**打小報告**朋友。