English grammar worksheet focusing on modals for advice, obligation, and prohibition.

The task involves identifying whether the modal verbs in each sentence indicate advice, obligation, or prohibition. Let's analyze each sentence and categorize them accordingly.

Key Modal Verbs:

- Should: Often indicates advice.
- Must: Often indicates obligation.
- Mustn't: Indicates prohibition.

Solution:

1. You should visit your grandparents. They miss you a lot.
- Advice: The speaker is giving advice to visit grandparents.
- Answer: Advice

2. You mustn't park your car here. It's a hospital exit.
- Prohibition: The speaker is prohibiting parking in this area.
- Answer: Prohibition

3. We must study more. The exam is close.
- Obligation: The speaker is emphasizing the necessity of studying due to an upcoming exam.
- Answer: Obligation

4. You mustn't use a mobile phone in class.
- Prohibition: The speaker is prohibiting the use of mobile phones in class.
- Answer: Prohibition

5. You must arrive at 7:00 o'clock. The speech starts on time.
- Obligation: The speaker is emphasizing the necessity of arriving on time.
- Answer: Obligation

6. You should eat more vegetables.
- Advice: The speaker is giving advice to eat more vegetables.
- Answer: Advice

7. You shouldn't drink beer so early. It isn't good for you.
- Advice: The speaker is advising against drinking beer early.
- Answer: Advice

8. You mustn't smoke in a hospital.
- Prohibition: The speaker is prohibiting smoking in a hospital.
- Answer: Prohibition

9. They should walk every day. Both are fat.
- Advice: The speaker is giving advice to walk daily for health reasons.
- Answer: Advice

10. We must go to talk with the headmaster.
- Obligation: The speaker is emphasizing the necessity of talking to the headmaster.
- Answer: Obligation

11. We mustn't speak aloud. There are ill people.
- Prohibition: The speaker is prohibiting loud speaking due to the presence of ill people.
- Answer: Prohibition

12. He must listen to his parents.
- Obligation: The speaker is emphasizing the necessity of listening to parents.
- Answer: Obligation

13. She should buy this dress. It isn't expensive.
- Advice: The speaker is giving advice to buy the dress.
- Answer: Advice

14. She shouldn't eat chocolates. It isn't good for her diet.
- Advice: The speaker is advising against eating chocolates.
- Answer: Advice

15. I mustn't open the window. He is painting the walls.
- Prohibition: The speaker is prohibiting opening the window because it would disturb the painting.
- Answer: Prohibition

16. I should start a diet. Summer is close.
- Advice: The speaker is giving advice to start a diet.
- Answer: Advice

17. You shouldn't talk in class. Your teacher will reprimand you.
- Advice: The speaker is advising against talking in class.
- Answer: Advice

18. They must wear a uniform. It's a religious school.
- Obligation: The speaker is emphasizing the necessity of wearing a uniform in a religious school.
- Answer: Obligation

19. We mustn't talk if the priest is celebrating mass.
- Prohibition: The speaker is prohibiting talking during mass.
- Answer: Prohibition

20. We should recycle more.
- Advice: The speaker is giving advice to recycle more.
- Answer: Advice

21. He should go now. It's late.
- Advice: The speaker is giving advice to leave immediately.
- Answer: Advice

22. You must finish your homework until 9:00 o'clock.
- Obligation: The speaker is emphasizing the necessity of finishing homework by 9:00.
- Answer: Obligation

23. We mustn't cheat if we have an exam.
- Prohibition: The speaker is prohibiting cheating during exams.
- Answer: Prohibition

24. They should run now. It's late for the class.
- Advice: The speaker is giving advice to run due to being late.
- Answer: Advice

25. He should take an umbrella. It's raining.
- Advice: The speaker is giving advice to take an umbrella.
- Answer: Advice

Final Answers:

1. Advice
2. Prohibition
3. Obligation
4. Prohibition
5. Obligation
6. Advice
7. Advice
8. Prohibition
9. Advice
10. Obligation
11. Prohibition
12. Obligation
13. Advice
14. Advice
15. Prohibition
16. Advice
17. Advice
18. Obligation
19. Prohibition
20. Advice
21. Advice
22. Obligation
23. Prohibition
24. Advice
25. Advice

Boxed Final Answer:

\[
\boxed{
\begin{array}{l}
\text{1. Advice} \\
\text{2. Prohibition} \\
\text{3. Obligation} \\
\text{4. Prohibition} \\
\text{5. Obligation} \\
\text{6. Advice} \\
\text{7. Advice} \\
\text{8. Prohibition} \\
\text{9. Advice} \\
\text{10. Obligation} \\
\text{11. Prohibition} \\
\text{12. Obligation} \\
\text{13. Advice} \\
\text{14. Advice} \\
\text{15. Prohibition} \\
\text{16. Advice} \\
\text{17. Advice} \\
\text{18. Obligation} \\
\text{19. Prohibition} \\
\text{20. Advice} \\
\text{21. Advice} \\
\text{22. Obligation} \\
\text{23. Prohibition} \\
\text{24. Advice} \\
\text{25. Advice} \\
\end{array}
}
\]