您要查找的是不是：
- I want to pick up a camera. They are on sale this week. 我想买一个相机，这周正在打折。
- I bought a bunch of bananas when they were on sale. 香蕉特价的时候我买了一把。
- Once I got home, I realised that they were on sale because each button has, what looks like, a swastika on it. 回家后，发现钮扣上有个纳粹党所用的十字记号才处理出售的。
- They are on holiday in the Lake District. 他们在英格兰湖区度假。
- They were taking turns to be on the night shift. 他们轮流做夜班。
- When they are on holiday the work of doctors is often done by locums. 医生度假时，他们的工作常由代理医生负责。
- Now they are on their way to the dining hall. 现在他们在去餐厅的路上。
- They were on the verge of tears at parting. 他们分手时几乎要哭出来了。
- They are on the top of the shelf in my bedroom. 它们在我卧室的架子上。
- Women used to think they were on the shelf at 30. 过去女人一到30岁就认为是过了结婚年龄。
- They are on Mrs Green rs clothes line. 它们(衣服)在格林太太的晾衣绳上。
- They are on the December 27th. Do you like to go? 十二月二十七日的，喜欢去吗?
- They are taking turns to be on the night shift. 他们轮流做夜班。
- There's no time. They are on their way. 没时间了!他们已经上路了!
- They are on a strike to protest their rights. 他们在为保护自己的权益罢工。
- They are on back order for months. 他们收到回来的决定几个月了。
- They are on the table in the kitchen. 它们在厨房的桌上。
- They are on vacation in Auckland. 他们在奥克兰度假。
- Don't worry, they are on their way there. 别担心,他们正去那儿。
- Kevin: No, they were only on sale at the box office. And to get mine I had to line up all day. 凯文:你不会买到，入场券只在售票处发售。买这张票，我排队排了一整天。
