They should never play foul.とは 意味・読み方・使い方

I'm determined never to give way to temptation.

You should on no account cheat in the exam.

You should be prepared for emergencies.

You'd better stay on your guard.

You shouldn't play with matches.

You must not go free-diving.

Don't shout.

I can't stand getting beaten.

You must not play.

You should not be absent without notice.

Never give up.

You must not be fooled.

The player intends to deke the defense.

As long as it doesn't interrupt the game!

We shouldn't have any prejudice.

Don't go to extremes.

Brothers shouldn't quarrel.

Brothers shouldn't fight.

Brothers should not quarrel.

You must not yield to temptation.

Don't enter at the kitchen door.

Don't misunderstand.

You must not use [resort to] violence.

Don't get me wrong.

Don't put the cart before the horse.

You must not overdo it.

You must not push yourself too hard.

You guys cannot quarrel with each other.

He won't be a good player.

You shouldn't skip in reading.