下雨了,我们不得不取消旅行。
xiàyǔ le , wǒmen bùdébù qǔxiāo lǚxíng 。
It's raining, we have no choice but to cancel the trip.
他不得不加班,因为项目很紧急。
tā bùdébù jiābān , yīnwèi xiàngmù hěn jǐnjí 。
He has to work overtime because the project is urgent.
我不得不承认,我错了。
wǒ bùdébù chéngrèn , wǒ cuò le 。
I have to admit that I was wrong.