Why shouldn't I play with the knife?
Because you may cut yourself.
What do you do in your free time?
I clean the house.
What's the matter with you?
I have a toothache.
What do you do in your free time?
I go to the cinema.
He has a stomach ache. (SHOULD)
He should go to the doctor.
DON'T...!
Don't climb the tree!
DON'T...!
Don't touch the stove!
What's the matter with you?
I have an earache.
What does your father do in his free time?
He goes camping.
What's the matter with him?
He has a stomach ache.
DON'T...!
Don't play with knife!
Why shouldn't I climb the tree?
Because you may break your arm.
DON'T...
Don't run down the stairs!
I have a fever. (SHOULD)
You should take a rest.
Why shouldn't I play with the stove?
Because you may get a burn.
What does your sister do in her free time?
She surfs the Internet.
I have a toothache. (SHOULD)
You should go to the dentist.
She has a backache. (SHOULDN'T)
She shouldn't carry heavy things.