Soluzione del esercizio Think it out di Engage!, Vol. 1

Esercizi svolti per il libro Engage!, Vol. 1

Soluzione

  1. The modal verb must is the same for all persons.
  2. In the affirmative both 'have to' and 'must' refer to necessity or obligation.
  3. 'Mustn't' tells us that something is prohibited while 'don't/doesn't have to' tells us that something is not necessary.