(+)
Sit down!
(-) Cross the street.
Don't cross the street.
(+) eat the vegetables
Let's eat the vegetables.
(-) Listen to her!
Don't listen to her.
(-)
Don't eat and drink
(+)
Stand up!
(-) Step on the grass!
Don't step on the grass!
(+) wake up
Wake up at 6 am.
(-) Turn it off.
Don't turn it off.
(-) ring the doorbell
Don't ring the doorbell!
(-) Smoke
Don't smoke!