Here are the correct modal verbs for each sentence, based on the meaning of ability, permission, obligation, advice, and possibility.
1.
can – This shows ability. Your dad has the skill to speak these languages.
2.
should – This is a recommendation. Since the movie is very good, it is advised that you see it.
3.
can’t – This shows lack of permission or inability. The phrase "I'm sorry" suggests you are not allowed to use it.
4.
mustn’t – This shows prohibition. "It's forbidden" means it is strictly not allowed.
5.
must – This shows strong obligation or necessity. You have to finish it by the deadline.
6.
can – This shows ability. Freddy has the physical ability to run faster.
7.
could – This is used for polite requests. "Could you help me..." is softer and more polite than "Can you".
8.
should – This is advice or expectation. It is good behavior for children to pay attention.
9.
must – This shows logical deduction/certainty. Because the lights are on, you are sure they are home.
10.
can’t – This shows impossibility/lack of ability. If you don't have a bike, you are unable to ride one.
11.
shouldn’t – This is negative advice. It is not good for your health to eat cold things when you have a fever.
12.
might – This shows possibility. Taking an umbrella suggests there is a chance of rain, but it's not certain.
Final Answer:
1. can
2. should
3. can’t
4. mustn’t
5. must
6. can
7. could
8. should
9. must
10. can’t
11. shouldn’t
12. might
Parent Tip: Review the logic above to help your child master the concept of modal auxiliaries worksheet 4th grade.
