Must and Mustn’t

Students ____________ be late for school.

• must

• mustn’t

Students ____________ eat food in class.

• must

• mustn’t

Students ____________ listen to the teacher.

• must

• mustn’t

Students ____________ use cell phones in class.

• mustn’t

• must

You __________ raise your hand to speak.

• must

• mustn’t

You _________ be polite to your teachers.

• must

• mustn’t

You _________ shout in the classroom.

• must

• mustn’t

We ___________ keep our classroom clean.

• must

• mustn’t

You __________ fight in the school.

• must

• mustn’t

What is the structure of “must”?

• Subject + must not + v.1

• Subject + must to + v.1

• Subject + must + main verb

• Subject + mustn’t + main