You went to a party yesterday.
Neg: You did not go to a party yesterday.
Int: Did you go to a party yesterday?
She has already written the essay.
Neg: She has not written the essay yet.
Int: Has she written the essay yet?
They were playing the whole day yesterday.
Int: Were they playing the whole day yesterday?
Neg: They were not playing the whole day yesterday.
He said everything .
Int: Did he say everything?
Neg: He did not say everything.