24-1 Tom Bradley was mayor of Los Angeles from 1973 to 1993, an era when the city had transformed from a collection of suburban neighborhoods to the second-largest city in the United States.
(A) an era when the city had transformed
(B) an era during which the city was transformed
(C) an era that transformed it
(D) during which era the city transformed
(E) during which the city was transformed
答案是B
請問一下介係詞+關代的用法,前面是不是一定要有N,不可以像D.E選項降,逗號後直接加介係詞+關代
再請問A選項是錯在時態嗎?用when 應該是沒問題八(when=during which)
可以說明一下嗎---感謝感謝~~ :D