MODAL VERBS

Els modal verbs són especials. Expliquen l'actitud del parlant, i es refereixen a idees bàsiques. No solen canviar de forma.

SHOULD/SHOULDN'T

Idea bàsica: donar consell.

THE DOCTOR SAID I SHOULD GO SWIMMING AND I SHOULDN'T SMOKE.

MUST/MUST

Idea bàsica: obligació (forma afirmativa).

                   prohibició (forma negativa).

YOU MUST WEAR A UNIFORM IN SOME SCHOOLS.

YOU MUSTN'T EAT OR USE YOUR MOBILE PHONES AT A LIBRARY.

CAN/CAN'T

Idees bàsiques: possibilitat/permís.

I CAN GO OUT ON SATURDAY.

MY GRANDPA CAN'T USE A COMPUTER--HE'S TOO OLD.

COULD/COULDN'T

Idees bàsiques: el mateix que CAN/CAN'T.

És el mateix però en passat.

I COULD GO OUT LAST SATURDAY.

MY GRANDPA COULDN'T USE A COMPUTER--HE WAS TOO OLD.

HAVE TO/DON'T HAVE TO

Idea bàsica: obligació (forma afirmativa)

                   no ser necessari (forma negativa)

I HAVE TO HELP MY BROTHER WITH HIS HOMEWORK.

YOU DON'T HAVE TO COPY ALL THE EXERCISES--ONLY THE ANSWERS.

Practice: 1. page 65. Ex. 4-5-6-7-8-9

2. Copy phrases using modal verbs from the texts on page 64. (Advice from Amy)