on duty简单句子

“on duty”是一个英语短语，意为“值班”或“在岗”。以下是一些使用“on duty”的简单句子：

1. The policeman is on duty tonight.（今晚有警察值班。）
2. Who's on duty in the hospital today?（今天谁在医院值班？）
3. The doctor on duty quickly responded when the emergency patient was brought in.（当急诊病人被送来时，值班医生迅速做出反应。）
4. I will be on duty tomorrow instead of Tom, who is sick.（我明天将代替生病的汤姆值班。）
5. He goes on duty at 9 am and finishes his shift at 5 pm.（他上午9点上班，下午5点下班。）
6. The security guard is always on duty at night.（保安在晚上总是值班。）
7. There is always someone on duty during the day in this office.（这个办公室白天总是有人值班。）
8. She is a nurse and often has to work on duty during weekends.（她是一名护士，周末经常要值班。）
9. The clerk on duty in the post office helped the customers with their packages.（邮局里值班的办事员帮助顾客处理他们的包裹。）
10. According to the regulations, no one is allowed to leave their post when on duty.（根据规定，值班时任何人都不允许离开岗位。）

这些句子涵盖了不同的职业场景和时间频率，展示了“on duty”在不同语境下的应用。