Modal verbs of obligation and advice.

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Modals of Obligation

1. They must either enter the classroom or stay out of school.

2. I must not overdo it with alcohol is harmful to my health

3. He needs to needs urgent heart surgery.

4. You have to eat fruits and vegetables.

5. Emilia needs to rest for her health to improve

Modals of Advice.

1. She should not be late for her appointment with the doctor.

2. You should go to the police station to report.

3. It would had better to cross the avenue through the pedestrian bridge, to avoid an accident.

4. He should wash his hands before dinner.

5. They should not throw rubbish into the river.