Cover of the textbook Engage!, Vol. 1

The key answer of exercise Think it out

The key to exercise solutions in chapter Unit 5 - Winning at any cost? for the textbook Engage!, Vol. 1 with authors Monica Berlis, Jane Bowie, Heather Jones e Barbara Bettinelli from Pearson Longman

Question

Choose the correct alternative.

Answer

  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.

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