Unit 12
2
in the negative to express a negative recom m endation
People sh o uld n ’t be horrib le to others, (it is a bad thing to do)
Must is used:
from the speaker’s point of view to express a strong obligation
He m ust go to prison!
(I think it is necessary)
Must not (Mustn’t) is used:
from the speaker’s point of view to say that som ething is not allowed
You m u s tn 't take money!
(I think it is not allowed)
A ll of these m odal verbs are used w ith another main verb and w itho u t
to. There is no third
person construction, e.g.
He must ao to prison. NOT
He must to go to prison. OR
He m usts go to
prison.
Modal constructions using ‘to’ (sem i-m odal verbs)
Ought to is used:
to express a recom m endation (like
should}
People ought to be kind to others.
This construction is less com m on in the negative.
