Grammar 5

5.- Have to, don´t have to, can and can´t

Have to expressed obligation and don´t have to means there is no obligation.

Affirmative	Negative	Question
You have to get up early She has to study more	I don´t have to study tonight He doesn´t have to buy lunch	Do we have to go now? Doeshe have to wear a tie?

Can expresses ability or possibility. Can´t expressed lack of ability and prohibition. Can is a modal verb (like will, should, etc.)After modalverbs we use the infinitive without to with all persons.

Affirmative	Negative	Question	Short answers
I can drive very well He can have a party	You can´t park here. She can´t dance	Can you ride a bike? Can you bring music?	Yes, I can No, I can´t.