Hi Anon: If you look in any English language reference book under verb tenses, you will find the answer to your question. "be" is a helping verb (auxilliary) for the passive voice of verbs, and "have" is the helping verb for all the perfect tenses. "been" is the past participle of "be", and "have been" is the auxiliary for the present perfect passive voice of transitive verbs.
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AnonymousI understand that with verb-to-be sentence, we can use noun, adverb and adjective after the verb-to-be:
eg He is Peter (noun)
The dog is outside (adverb)
She is great (adjective)
It is also correct to say: The work is done (done is the past particple form of do).
My question is
Anonymouswhat is the difference between is/has been, or are/have been?is and are apply to the present time period.