Examples
zài在yī yuàn医院de的shí hou时候，wǒ我bù dé bù不得不jiè yān戒烟。
在医院的时候，我不得不戒烟。
I had to abstain from smoking while I was in the hospital.
我爸爸已经戒烟戒酒了。
My father has already given up smoking and drinking.
戒烟容易，戒你太难！
Quitting smoking is easy, quitting you is too hard.