SC疑点

EUPHORIAzzc

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
  
  
• 请问为什么必须加an era呢？我的想法如下：from 1973 to 1993是时间修饰，mayor of LA 是从属结构，which 修饰跳过时间，确定为 LA。
  
  

EUPHORIAzzc

天天练哦 发表于 2023-2-17 14:34
一点我的思路，要是哪里说的不对还请各路大佬指出。

首先原句中包含an era，所以对题意思的理解就要从A去 ...