Perfect Affirmative sentence and Negative sentence
Present perfect:
I have received a courier. (Affirmative sentence)
I have not received a courier. (Negative sentence)
He has written a story. (Affirmative sentence)
He has not written a story. (Negative sentence)
Past perfect:
I had produced a new movie. (Affirmative sentence)
I had not produced a new movie. (Negative sentence)
Future perfect:
I will have swum in the sea. (Affirmative sentence)
I will not have swum in the sea. (Negative sentence)