once; already; former; previously; ever; (past tense marker used before verb or clause)[cedict]
毆打
ōu dǎㄡ ㄉㄚˇ
beat up[cedict]
過
guòㄍㄨㄛˋ
(experienced action marker); to cross; to go over; to pass (time); to celebrate (a holiday); to live; to get along; excessively; too-; surname Guo[cedict]