Sixth-grade grammar worksheet practicing "to be" verbs in affirmative, negative, and question sentences.

Let's solve this grammar worksheet step by step. The task is to complete the sentences using the correct form of the verb "to be" (am, is, are, was, were, etc.). Since all the sentences are in the present tense and describe current states or locations, we'll use present tense forms:
- I am, You are, He/She/It is, We are, They are

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✔ Completed Sentences:

1. I am a girl.
→ "I" takes "am".

2. My father is at work.
→ "My father" is singular → "is".

3. Alex and Dino are my cats.
→ "Alex and Dino" is plural → "are".

4. Alex is in the garden.
→ "Alex" is singular → "is".

5. Dino is on the floor.
→ "Dino" is singular → "is".

6. My red pencil is on the floor, too.
→ "Pencil" is singular → "is".

7. The other pencils are in my pencil case.
→ "Pencils" is plural → "are".

8. My mother is in the living room.
→ "Mother" is singular → "is".

9. Eli and Rafael are good friends.
→ Two people → plural → "are".

10. They are good at tennis.
→ "They" is plural → "are".

11. Are they in Amsterdam this week?
→ Question with "they" → "Are".

12. The pupils are not at school today.
→ "Pupils" is plural → "are". Note: "not" is already given.

13. It is Monday.
→ "It" refers to the day → "is".

14. I am at home.
→ "I" → "am".

15. We are friends.
→ "We" → "are".

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✔ Final Answers:

1. am
2. is
3. are
4. is
5. is
6. is
7. are
8. is
9. are
10. are
11. Are
12. are
13. is
14. am
15. are

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🔍 Explanation:

The verb "to be" changes based on the subject:
- I → am
- You / We / They → are
- He / She / It / Singular nouns → is
- Plural nouns → are

Also, in questions, we invert the subject and verb:
- "They are..." → "Are they...?"

This worksheet helps students practice subject-verb agreement with the verb "to be" in various contexts (affirmative, negative, questions).

Let me know if you'd like this turned into a printable version or need explanations for any specific sentence!