Grammar worksheet for practicing the use of "can" and "can't" in sentences.

Grammar Worksheet: "CAN"

The worksheet focuses on using the modal verb "can" and its negative form "can't" in various contexts. Below is the solution to each sentence, along with explanations.

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Instructions:

- Fill in the blanks below to complete the sentences. Use the words in the above boxes.

#### Sentences:
1. I ________ go to work today because I'm sick.
- Answer: can't
- Explanation: Since you are sick, you are unable to go to work. The negative form "can't" is appropriate here.

2. A: ________ your uncle speak Spanish? B: Yes, he ________.
- Answer: Can, can
- Explanation: The first blank requires a question form, so "Can" is used. The second blank is a positive response, so "can" is used again.

3. No, my friend ________ drive, but he ________ ride a bicycle.
- Answer: can't, can
- Explanation: The first part indicates inability (negative), so "can't" is used. The second part shows ability, so "can" is used.

4. We ________ go to the beach today because it's raining.
- Answer: can't
- Explanation: Due to the rain, going to the beach is not possible. The negative form "can't" is appropriate.

5. A: ________ they come with us to the store? B: No, they ________.
- Answer: Can, can't
- Explanation: The first blank requires a question form, so "Can" is used. The second blank is a negative response, so "can't" is used.

6. Denise ________ play the piano. She knows how to play it.
- Answer: can
- Explanation: Since Denise knows how to play the piano, she has the ability to do so. The affirmative form "can" is appropriate.

7. I already finished my work, so I ________ go home now.
- Answer: can
- Explanation: Since the work is finished, you have the ability or permission to go home. The affirmative form "can" is appropriate.

8. Excuse me, where ________ I buy a bus ticket?
- Answer: can
- Explanation: This is a question asking for permission or ability to purchase a bus ticket. The affirmative form "can" is used.

9. ________ you help me with my homework?
- Answer: Can
- Explanation: This is a request for help, which uses the affirmative form "Can" in a question.

10. Penguins ________ fly, but they ________ swim very well.
- Answer: can't, can
- Explanation: Penguins cannot fly, so "can't" is used. However, they can swim very well, so "can" is used.

11. I'm sorry, but I ________ believe what he said! He's not telling the truth!
- Answer: can't
- Explanation: Since the person is not telling the truth, you are unable to believe them. The negative form "can't" is appropriate.

12. Henry ________ meet us tomorrow at three o'clock. We'll meet him in the library.
- Answer: can
- Explanation: Henry has the ability or permission to meet you at the specified time and place. The affirmative form "can" is appropriate.

13. My little brother ________ tell the time. Now he knows what time to watch TV!
- Answer: can
- Explanation: The brother now has the ability to tell the time. The affirmative form "can" is appropriate.

14. A: ________ you see that bird? B: No, I ________. Where is it?
- Answer: Can, can't
- Explanation: The first blank requires a question form, so "Can" is used. The second blank is a negative response, so "can't" is used.

15. Do you think you ________ find your way home?
- Answer: can
- Explanation: This is a question asking about the ability to find one's way home. The affirmative form "can" is appropriate.

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Final Answers:

1. can't
2. Can, can
3. can't, can
4. can't
5. Can, can't
6. can
7. can
8. can
9. Can
10. can't, can
11. can't
12. can
13. can
14. Can, can't
15. can

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Explanation of Modal Verb "Can":

- Affirmative: Used to express ability, permission, or possibility.
- Example: "I can swim."
- Negative: Used to express inability, lack of permission, or impossibility.
- Example: "I can't swim."
- Question: Used to ask about ability, permission, or possibility.
- Example: "Can you swim?"

This worksheet helps practice these different uses of "can" in context.

Final Answer:
\boxed{
1. can't, 2. Can, can, 3. can't, can, 4. can't, 5. Can, can't, 6. can, 7. can, 8. can, 9. Can, 10. can't, can, 11. can't, 12. can, 13. can, 14. Can, can't, 15. can
}