We have bought a new TV. We have not purchased a new TV.

I have passed my driving test. I have not passed my driving test.

He has called me at noon. He hasn`t called me at noon.

You have had dinner today. You haven`t had dinner today.

She has recently went to the library. She has never went to the library.

He has already done his homework. He has not  done his homework yet.

It has already stopped. It has not stopped yet.