不得不 bù dé bù have no choice or option but tocannot buthave tocan't help itcan't avoid Example sentences 因为他很怕黑，所以不得不开灯睡觉。 yīnwèi tā hěn pà hēi, suǒyǐ bùdébù kāi dēng shuì jiào. Because he's afraid of the dark, he always has to turn on the lights to sleep 他除了得付学费又得付生活费，所以不得不去打两份工。 tā chúle dé fù xuéfèi yòu dé fù shēnghuófèi, suǒyǐ bùdébù qù dǎ liǎng fèn gōng. He had to pay the tuition and the cost of living, so he had to have two jobs