Have been is the past tense of 'are' or 'are being'. Your parcels have been sent to you. The seeds you gave me have been planted. My dogs have been asleep.
Have been = something is continuing from the past Had been = something has stopped. I have been having a lot of sleepless nights = this was happening regularly, and is still happening I had been having a lot of sleepless nights = this was happening regularly, but it stopped some time back
I've been having lower back pains lately. It occurred to me that I've been having them since using the electric blanket. Coincidence? Maybe...
Never having been to school, Bob's management skill were extremely flaccid.
When the plane crashed, there was a sole survivor, the rest of the passengers having been deceased.
No one has been established as having real ability. There only appears to be potential at this point.
Since you have been having your period, it means that you are not pregnant.
In retaliation for having been hit earlier in the game, he kicked the other player.
Extracts from the Venus Flytrap have been touted as having some medicinal, but science has not as yet backed up that claim.
The same as if she has not been having an afair.
Having been misinformed, the police waited in the wrong place, and failed to prevent the bank robbery.
They were all quiet as they sat remembering their friend. The boy was having trouble remembering where he had been on that night.
having no use means that you are not good for anything.