Define the predicate and its Tense and Voice:

1. Most schoolgirls are vaccinated against rubella, but it doesn’t ensure immunity.
are vaccinated against rubella-it's a predicate,present simple,passive voice
2. He claims that he really had a chicken-pox but this doctor misdiagnosed it.
claims-predicate,present simple,active voice
had -predicate,past simple,active voice
misdiagnosed-predicate,past simple,active voice
3. Nearly 30 other glycosides have been identified in the drug.
have been identified-predicate,present perfect,passive voice