catch someone napping

US /kætʃ ˈsʌm.wʌn ˈnæp.ɪŋ/
UK /kætʃ ˈsʌm.wʌn ˈnæp.ɪŋ/
"catch someone napping" picture
1.

措手不及, 抓到某人偷懶

to surprise someone when they are not prepared for something, especially when they are not paying attention or are doing something they shouldn't be doing

:
The teacher caught him napping when he was playing games on his phone during class.
老師抓到他上課玩手機遊戲。
The sudden inspection caught many employees napping, as they were not following company protocols.
突擊檢查讓許多員工措手不及,因為他們沒有遵守公司規定。