🔁 関係代名詞 ・ リン
TOEIC Part5文法問題 リン: Q12（関係代名詞）
Mr. Alvarez is the engineer ___ designed the new ventilation system.
Mr. Alvarez is the engineer ___ designed the new ventilation system.
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正解: B) who
The antecedent is 'the engineer' (a person), and the blank is followed by the verb 'designed', so the subject relative pronoun 'who' is correct. 'Which' is used when the antecedent is a thing. 'Whose' is possessive and needs a noun right after it (whose design...). 'Whom' is the object form, followed by a subject + verb. The two questions to ask are: is the antecedent a person or a thing, and does a verb or a subject follow?