Modal verb (should/shouldn't/must/musn't)

Modal verbs used to show obligation or prohibition are

• should

• must

• musn't

• shouldn't

Modal verbs used to give advice and recommendation or to express a duty to do something are

• should

• must

• musn't

• shouldn't

Modal verb 'should' and 'shouldn't shows that

• you have the option to follow the advice or not to follow the advice

• you have no option but to follow the advice

Modal verb 'must' and 'mustn't' shows that

• you have the option to follow or not to follow the things been told

• you have no option but to follow the things been told

You ______________ forget to take your medicine.

• should

• shouldn't

It's very hot. You _____________ take an umbrella.

• should

• shouldn't

It's impolite to be late. She ____________ learn to be punctual.

• should

• shouldn't

We ______________ use handphones at mealtimes,

• should

• shouldn't

It's late. _______________ we leave now?

• Should

• Shouldn't

They _______________ be friendly with their neighbours.

• should

• shouldn't