A2 Grammar

Modals – have to

Modals – have to

Have to

Use:

Use have to to talk about something you must do.

I have to start work at eight.

Use don’t have to to talk about something that is not necessary.

You don’t have to work tomorrow, it’s Saturday.

Common mistakes

1) Some students think that don’t have to means must not, but this is not correct.

You don’t have to use your mobile phone in class. → You mustn’t use your mobile phone in class.

2) Some students use haven’t / hasn’t to make negative sentences and questions.

My sister hasn’t to work today. → My sister doesn’t have to work today.

Have you to leave now? → Do you have to leave now?