*catatan : (+) positive, (-) negative, (?) interrogative

1. (+) Teachers teach in the classroom every day

(-) Teachers do not teach in the classroom every day

(?) Do teachers teach in the classroom every day?

2. (-) Mr. Sanjaya doesn't know how to make the crunchy potato chips

(+) Mr. Sanjaya knows how to make the crunchy potato chips

(?) Does Mr. Sanjaya know how to make the crunchy potato chips?

3. (+) My classmate borrows the book from the school library

(-) My classmate does not borrow the book from the school library

(?) Does my classmate borrow the book from the school library?

4. (+) Marina and her sister buy a glass of thai tea every afternoon

(-) Marina and her sister do not buy a glass of thai tea every afternoon

(?) Do Marina and her sister buy a glass of thai tea every afternoon?

5. (+) The student studies the material well

(-) The student does not study the material well

(?) Does the student study the material well?

Do not = don't

Does not = doesn't