清晨在小鸟的歌声中开始了充实的一天，和我们新的一课。欢迎回来，这里是《Faith口语课堂-天天学》，我是Faith老师。今天的快乐英语之行开始了！

今天主攻如何表达熬夜，加班的用法。首先介绍这个词组：work over time，表示加班：

I have a quite tight schedule, so I have to work over time to meet the deadline of this marketing report. 我的时间安排得很紧，所以必须要加班才能把这份市场报告在最后期限前写完。

Don't wait for me for dinner; I might work over time tonight. 不要等我吃饭了，我今晚可能加班。

Work extra hours也表示加班：

I have to work extra hours tonight to go over your proposal. 我今晚不得不加班才能把你的建议书看完。

You don't need to work extra hours, just improve your work efficiency. 你不必要老是加班，只要提高你的工作效率就行了。

Burn the candle at both ends表示熬夜，过分耗费：

Did you burn the candle at both ends last night, look at your bags under your eyes. 你昨晚熬夜了吧，看看你眼睛下的黑眼圈。

I've been burning the candle at both ends. The boss has been on everyone's case lately and has been piling on a lot of work. 我最近熬夜，早起，劳累过度。这些天，老板对我们查得很严，还给我们布置了一大堆的工作。

Stay up late表示很晚才睡觉，熬夜的意思：

I'm a night person; I usually stay up late, reading or writing something. 我是个夜猫子，经常熬夜，我喜欢在晚上看看书，写点什么。

Don't stay up late, go to bed before 10 o'clock sharp. 不要熬夜，10点整以前上床睡觉。

Do you usually stay up late, are you a night person or day person?