Question

identify each of the underlined phrases as restrictive or nonrestrictive.
her porcelain doll, a rare collectors item, was sold at auction.
restrictive
nonrestrictive
e to visit his aunt, a professional chef.
the boy with the baseball cap would like to have a turn.

Explanation:

1. For "a rare collector's item": This phrase adds extra, non-essential detail about the porcelain doll; the core meaning of the sentence (the doll was sold at auction) remains clear without it, and it is set off by commas.
2. For "a professional chef": This phrase provides additional, non-required information about the aunt; the sentence's main point (he wants to visit his aunt) is intact without it, and it is separated by a comma.
3. For "with the baseball cap": This phrase narrows down which boy is being referred to—without it, the sentence does not specify which boy wants a turn, so it is essential to the sentence's meaning.

Answer:

1. "a rare collector's item": nonrestrictive
2. "a professional chef": nonrestrictive
3. "with the baseball cap": restrictive