我今晚必须加班。
wǒ jīnwǎn bìxū jiābān 。
I have to work overtime tonight.
他经常加班,所以很疲惫。
tā jīngcháng jiābān , suǒyǐ hěn píbèi 。
He often works overtime, so he is very tired.
如果你加班,记得多喝水。
rúguǒ nǐ jiābān , jìde duō hēshuǐ 。
If you work overtime, remember to drink more water.