关于定语从句引导词，in which 与where的问题.多谢

fdkbaby

以下是引用欧阳可情在2003-12-27 16:20:00的发言：
遇见很多题目，都是搞不清楚什么时候用in which ，什么时候用where或者when，是可以互换的吗？有的时候两个选项的区别就在于此，那么该选什么呢？
比如：
        His studies of ice-polished rocks in his Alpine home- land, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which greatice sheets had existed in now currently temperate areas.
B . in which great ice sheets existed in what are now temperate areas.
E.  when great ice sheets existed in areas now that are temperate

       正确答案是B，我选的是E，搞不明白，请指点。多谢！

单看E，that引导的定语从句修饰areas，那么that要尽量直接跟在areas后面，而这里中间放了now。now在这里，变成修饰existed了，显然不行。now应该修饰are。

我认为这里in which和when都可以。如果把E改成when great ice sheets existed in areas that are temperate now.应该就可以了。

仅供参考。