We form the negative of TO BE by placing NOT after the verb:

I am a student.
I am not a student.

We form questions with TO BE by placing the verb before the subject:
She is a teacher.
Is she a teacher?

A) Change the following sentences from affirmative to negative:

1. This is a book.
2. That is a tape.
3. These are apples.
4. Those are oranges.
5. We are instructors.
6. He is a barber.
7. I am an officer.
8. They are students.
9. They are apples.
10. He is a mechanic.
11. It is hot.
12. It is cold.
13. They are in Europe now.
14. John is angry with you.
15. Mr. Smith is a pilot with American Airlines.
16. The sky is very cloud today.
17. He and she are cousins.
18. She is a clever girl.
19. The stamps are in my desk.
20. He is in his office.

B) Change all the sentences above to questions.

ANSWERS (A):
1. This is not
2. That is not
3. These are not
4. Those are not
5. We are not
6. He is not
7. I am not
8. They are not
9. They are not
10. He is not
11. It is not
12. It is not
13. They are not
14. John is not
15. Mr. Smith not
16. The sky is not
17. He and she are not
18. She is not
19. The stamps are not
20. He is not

ANSWERS (B):
1. Is this…?
2. Is that…?
3. Are these…?
4. Are those…?
5. Are we…?
6. Is he…?
7. Am I …?
8. Are they…?
9. Are they…?
10. Is he…?
11. Is it…?
12. Is it…?
13. Are they…?
14. Is John…?
15. Is Mr. Smith…?
16. Is the sky…?
17. Are he and she…?
18. Is she…?
19. Are the stamps…?
20. Is he…?

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