I don't like his temper.

He has a bad temper.

Behave yourself!

Let's not do such naughty things.

Let's not be so naughty.

Will you be quiet, please?

Be quiet, please.

Keep it quiet.

Keep it down.

Think about where you are, please.

You should consider where you are, please.

Make clear your conditions, please.

Be realistic!

Get your head out of the clouds.

Be more down-to-earth.

Be more logical.

Don't make such stupid mistakes again.

Don't make your dumb mistakes again.

Follow the rules.

Don't violate rules.

Don't violate regulations.

Abide by law.

Do as the teacher said.

Do what the teacher said.

Do what the teacher tells you to do.

You are to do exactly as the teacher said.

You are fired.

You are sacked.

You've been out of here.

Be strong.

Don't be a chicken.

Don't disappoint father.

Don't let father down.

Hands up!

Put hands up!

Hand in the air!

Don't move.

Keep standing there.

Heads up!

Dangerous!

Look out!

Watch out!

Back off!

Go away!

Leave me alone!

If you don't change your mind, the situation will be beyond control.

If you don't change your mind, we won't control the situation.

If you are still careless, you'll be dismissed.

If you are still careless, you'll be fired.

I am ready to throw in the towel.

I am ready to accept the failure.

Don't attempt more than you are capable of.

Don't do what is beyond you.

Don't bite off more than you can chew.

It's written all of your face.

It's clear.

Your eyes have told me everything.

He doesn't make any exception for me.

He doesn't give me any special treatment.

Don't touch the wire.

Keep away from the wire.

Don't go to bed too late.

Don't fall asleep too late.

Don't stay up too late.