Must, have to, don't have to - Outccomes Pre-

​Uses of Must

​Obligation

eg. You must wear a seatbelt when you drive.

Deduction

eg. Look at all that snow. It must be cold outside!

To emphasize necessity

eg. Plants must have water AND light to grow.

Strong recommendation.

eg. What?!? You haven't been to Mdina? You must go!

​Mustn't

​Prohibition

eg. You mustn't use your phone while driving.