Pour exprimer la permission, l'obligation ou
l'interdiction, on peut utiliser des auxiliaires
modaux, que l'on associe à des verbes.
Can sert à exprimer la permission ou la
possibilité.
At Summerhill you can choose your classes.
Pupils can wear normal clothes at the
weekend.
Can't sert à exprimer l'interdiction ou
l'impossibilité.
Pupils can't wear make-up in the school.
In my school you can't study dance.
Must sert à exprimer l'obligation.
You must wear a uniform in most British
schools.
• Mustn't sert à exprimer l'interdiction.
Pupils mustn't run in the corridors.
Les auxiliaires modaux :
sont directement suivis d'une base verbale
sans to;
sont invariables (ils ne prennent pas de
<
>>
à la troisième personne du singulier).
Amelia can study photography in her school.
Amelia
must wear a uniform every day.
- n'ont pas besoin de l'auxiliaire do aux
formes négative et interrogative.
Samuel can't choose dance in his school.
Must you wear the uniform every day?
