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
不能。which在GMAT中的指代，尤其是非限定（逗号+which），是较为死板的，基本就进修饰逗号前的对象。 E选项中的which在GMAT语法中优先指代最近的1993，变成了during 1993而非原意想表达的from 1973 to 1993的二十年，逻辑意思发生改变。使用同位语an era很好的涵盖并指明了这一“from to 的二十年的时段”的含义。作者: lyric19 时间: 2010-5-19 08:44
多谢楼上的解释。 不过我还有一个疑问，貌似看到过说gmat中非限制性定语从句的which是指代主句的主语，所以想确认下，到底which是就近指代，还是指代主句主语。作者: ggghost 时间: 2010-5-19 10:20
from 1973 to 1993 不能做先行词，所以一定要 an era作者: salasbond 时间: 2010-5-19 12:28
which就近指代作者: smallway 时间: 2011-4-21 22:46
when 可以指代一段时间么？ from A to B作者: Candycatgmat 时间: 2011-12-23 09:19
Mr. Bradley was Mayor from 1973 to 1993, an era in which Los Angeles was transformed from a collection of suburban neighborhoods to what Mr. Bradley liked to call a ''world-class city,'' a place with glittering skyscrapers, a striking new skyline and a vibrant downtown