study / two hours / a night( strong advice against
You ought not to study two hours a night (Modal of Advice)
get / eight hours of sleep / every night ( strong advise)
You ought to get eight hours of sleep every night. (Modals of Advice)
study / before your final exams( obligation)
you must/ have to study before the exams
Don't play music in class (change to modal, advice)
You shouldn't play music in class
Don't eat during the lesson (change to modal, obligation)
You must not eat during the lesson.
wear / must / business attire / at the office
You must wear business attire at the office
Don't run in the corridor (change to modal, advice))
you shouldn't run in the cooridor.
If you don't want your dessert you ________ eat it. (no obligation, no necessity)
don't have to
Doctors _______ wear a mask when they are performing surgery. (obligation)
Have to / must
She ____________ this class if she doesn't want to. (no obligation, no necessity, attend)
doesn't have to
I _______ my driver's license before it expires.( obligation, renew)
must
Kevin ________ _____ his little sister when his parents goes out. ( obligtion, watch)
Has to (obligation)
Luca can not go to the game because he _______ study.( obligation, study)
must study
Layla ______ out to night ( no ability, go) because she ________ for her English exam. ( obligation, study)
can not go, has to study
I am so tired. I _________ a nap before w e leave. ( take, advice)
should take
Ken is really sick, he ________ to a docotor ( go, advice)
should go to a doctor
