You should always wash your hands before eating. （你应该总是在吃饭前洗手。）

I usually go for a jog before breakfast. （我通常在早餐前慢跑。）

The students have to finish their homework before class. （学生们必须在上课前完成他们的作业。）

She always brushes her teeth before going to bed. （她总是在睡觉前刷牙。）

We need to plan our trip carefully before we set off. （在我们出发前，我们需要仔细规划我们的旅行。）

Please turn off the lights before leaving the room. （离开房间前请关灯。）

He had to pass an exam before starting the new course. （在开始新课程之前，他必须通过一场考试。）

They arrived at the station an hour before the train left. （在火车离开前一小时他们到达了车站。）

You'd better warm up before doing sports. （你最好在做运动前热身。）

The children were excited before opening their presents. （孩子们在打开礼物前很兴奋。）

I read a book before going to work every morning. （我每天早上上班前都会读一本书。）

She made a phone call before entering the meeting room. （她在进入会议室前打了个电话。）

We should check the information carefully before making a decision. （在做决定前我们应该仔细核对信息。）

He practiced the piano for an hour before dinner. （他在晚餐前练了一个小时钢琴。）

They cleaned the house thoroughly before their guests arrived. （在客人到来前他们彻底打扫了房子。）

You need to charge your phone before going out. （出门前你需要给手机充电。）

She put on her makeup before going to the party. （去派对前她化了妆。）

We had a short discussion before starting the project. （在开始项目前我们进行了简短的讨论。）

He bought some flowers before visiting his friend in the hospital. （在去医院看望朋友前他买了一些花。）

The workers inspected the equipment before starting the operation. （工人们在开始操作前检查了设备。

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