It's used in the following ways:
* Present Perfect Tense: I have been to the store.
* Past Perfect Tense: I had been to the store before it closed.
* Passive Voice: The cake was been eaten by the dog.
It's used in the following ways:
* Present Perfect Tense: I have been to the store.
* Past Perfect Tense: I had been to the store before it closed.
* Passive Voice: The cake was been eaten by the dog.