When do you use them?
Advice
Obligation
100

What modals do you use to give advice? (2)

should/shouldn't

100
Complete: I don’t think __________ your shoes off inside (you/should/take)

I don’t think you should take your shoes off inside 

100

 Students ________wear uniforms at our school 

have to/must


200

What modals do you use for ability and possibility? (3)

Can/Can't and could

200

Give advice for this situation: My computer doesn't work.

You should go to the computer technician. (Other options available)

200

You _________ take phones into the exam room 

mustn’t
300

What modals do you use for obligation/necessity? (2)

must and have to

300

Give advice in this situation: My dog is sick.

You should take him to the vet (other options too) 

300

You ________ pay to visit most museums and art galleries in NY. Entrance is usually free.

don’t have to 

400

What modals do you use for lack of obligation/necessity? (2)

don't have to/doesn't have to

400

Give advice for this situation: I don't have any money for vacation.

You should________

400

To prevent Coronavirus you____wash your hands frequently. 

must/have to 

500

What modals do you use to express prohibition? (1)

mustn’t

500

Give advice for this situation: I need some ideas to celebrate the end of the semester. 

You should______

500

Tell me 3 things students mustn't do in an exam. 

Students mustn't ___________

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