have to / can / can't

Obligation / permission / prohibition

Obligation: have to

We can use have to and has to + infinitive to express obligation.
  • We have to work on Saturday mornings.
  • In football, the goalkeeper has to stop the ball from going into the goal.

1. Sports quiz.

Are these sentences true or false?

2. Have to for obligation.

Choose the correct form of have to.

For more information about obligation see the Grammar Reference.

Permission and prohibition: can / can't

We can use can to talk about permission and can't to express prohibition.
  • You can take a small bag onto the plane.
  • You can't travel without a passport.

3. True sentences.

Choose the correct option to make true sentences about what you can and can't do in the United Kingdom.

4. Missing words.

Complete the sentences with the verbs.

For more information about permission see the Grammar Reference.