In the sentence 'For Emily Carter, a 42-year-old teacher from Boston, the new policy allows flexible working hours,' what grammatical function does 'a 42-year-old teacher from Boston' serve?
答案解析
Core concept: Appositive phrase identification.
Analysis:
1. The phrase 'a 42-year-old teacher from Boston' renames and explains the noun 'Emily Carter', making it an appositive.
2. Key identifier: It provides supplementary information about the preceding noun without using relative pronouns.
3. Error options:
A. Adverbial clauses modify verbs/adjectives
C. Relative clauses require pronouns like 'who/which'
D. Predicate complements follow linking verbs
正确答案：B