例句：Players must do warm-ups before the game.

翻譯：選手們必須在比賽前做暖身運動。

例句：Dad always reads magazines before he goes to bed.

翻譯：爸爸總是在上床睡覺前看雜誌。

例句：I remember seeing you in the school before.

翻譯：我記得以前在學校看過你。