Many doctors have been concerned about the new flu.
Some of the new stamps were purchased by the collector.
The collector had purchased the new stamps.
We had never witnessed such a hysterical scene. Never is an adverb modifying the
main verb, witnessed, and is not part of the verb phrase. Will you remember my address and phone number? You is the pronoun subject of
the sentence and is not part of the verb phrase.
Is Emma practicing her piano now? Emma is the sentences subject and is not part
of the verb phrase.
The runner had not been passed by any of the other contestants. Not is an adverb
and is not part of the verb phrase.