2. They are always followed by INFINITIVE
They make their own negative
We use them when we are not sure about
something
3. CAN / COULD / MAY
You can go this afternoon to the cinema
Can you go to the cinema?
4. WILL / MAY / COULD / CAN
I will go to the cinema to night
5. SHOULD / OUGHT TO
You shout do your homeworks if you want
pass your exam
6. Obligation Lack of obligation
(rules) Have to wear uniform
He has to…
(moral) Must wear uniform
Do you have te be home …?
Does he have to …?
Teachers don’t have to wear uniforms
