unless

Miss Lau will punish us unless

• we don't follow her instructions.

• we follow her instructions.

Miss Lau will not punish us unless

• we don't follow her instructions.

• we follow her instructions.

I will call the police unless

• you don't stop the music.

• you stop the music.

I will not call the police unless

• you stop the music.

• you don't stop the music.

Let's go for a walk unless

• you are not too tired.

• you are tired.

Don't open the door unless

• you don't know who is ringing the bell.

• you know who is ringing the bell.

Open the door unless

• you don't know who is ringing the bell.

• you know who is ringing the bell.

My dog won't bark unless

• it is full.

• it is hungry.

My dog will bark unless

• it is hungry.

• it is full.

Pandas will become extinct unless

• people destroy the bamboo forests.

• people protect the bamboo forests.