Modal verbs

She can play the guitar very well.

This sentence express:

• possibility

• ability

We must return to our house at 6pm.

This sentece express:

• possibility

• obligation

May I open the window?

This sentence express:

• permission

• probability

It _________ rain tomorrow. (probability)

This sentence express:

• might

• can

• should

______ you help me with my homework? (Request)

• Should

• Might

• Can

You ___________ spend a lot of money in useless things.

(advise)

• may not

• shouldn't

• can't

You _________ watch TV all day. (prohibition)

• shouldn't

• mustn't

• couldn't

What sentence express obligation?

• You have to finish your project.

• You must deliver your homework on time.

• both sentences