Understanding the Modal Verb 'Must' and 'Mustn't'

What is the primary function of the modal verb 'must'?

• To express a rule or obligation

• To express a suggestion

• To express a possibility

• To express a wish

In the affirmative form, how does 'must' compare to 'have to'?

• 'Must' is weaker than 'have to'

• 'Must' is stronger than 'have to'

• 'Must' and 'have to' are identical

• 'Must' is only used in informal contexts

Which of the following is an example of using 'must' to make a deduction?

• You must finish your homework.

• He must be tired after the long flight.

• You must not enter the restricted area.

• We must pay the rent on time.

In which situation would you use 'must' to give a strong recommendation?

• You must not enter the building.

• You must see this movie, it's amazing.

• You must be 18 to vote.

• You must finish your assignment.

What does 'mustn't' express?

• A possibility

• A necessity

• A prohibition

• A suggestion

How does 'mustn't' differ from 'don't have to'?

• 'Mustn't' means not allowed, 'don't have to' means optional

• 'Mustn't' means optional, 'don't have to' means not allowed

• Both mean the same thing

• Both express a strong recommendation

Which sentence correctly uses the affirmative form of 'must'?

• We mustn't forget the keys.

• They must leave early.

• She must to go now.

• He musts finish his work.

What is the correct interrogative form of 'must'?

• We must go?

• Must we go?

• Do we must go?

• Must to we go?

Which of the following sentences uses 'mustn't' correctly?

• You mustn't to speak loudly.

• He mustn't forget his appointment.

• We mustn't to leave early.

• They mustn't to be late.

Which sentence demonstrates the use of 'must' for obligation?

• You mustn't forget your umbrella.

• You mustn't eat too much sugar.

• You must try the new restaurant.

• You must pay your taxes.