Unten suru nara, osake wo nomu na.

If you are going to drive, do not drink alcohol.

Sono kawa no mizu wa kitanai kara, zettai ni nomu na.

The water in that river is dirty, so never drink it.

Shōmikigen ga kirete iru kara, sono gyūnyū wa nomu na.

The expiration date has passed, so don't drink that milk.

Ashita no kenkō shindan no mae ni, nani mo nomu na.

Don't drink anything before tomorrow's health checkup.

Yoru osoku ni kōhī wo nomu na. Nemurenaku naru zo.

Don't drink coffee late at night. You won't be able to sleep.

Sore wa hoka no hito no nomimono dakara, nomu na yo.

That is someone else's drink, so don't drink it.