59. His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had
existed in now currently temperate areas.
(A) in which great ice sheets had existed in now currently temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate
In which or when can be used interchangeably in this sentence. The verb form here should be the simple past existed rather than the past perfect had existed. Now currently is redundant because both adverbs express the same idea.
A Had existed should be existed; now currently is redundant
B Correct. The simple past verb tense is correctly used in this sentence; now is placed and used correctly.
C Where there were areas now temperate is wordy and confusing
D Had existed should be existed; current should be
currently; in current temperate areas is unclear
E Now is an adverb and should be placed just after
The correct answer is B.
我想问的是如果把B选项中的what换成where是否依然正确？？谢谢！~~
我想问的是如果把B选项中的what换成where是否依然正确？？谢谢！~~
==》 不对， in what .... 介词短语+名词性从句，如果改成where , 就是介词+副词性从句。介词要接名词性的东东..
Open to discuss......
谢ls~~
若把C项改为：1.
when great ice sheets existed where areas now temperate
2. when great ice sheets existed where now temperate
3. when great ice sheets existed areas where now temperate
哪个对？哪个更好？
我的感觉when在GMAT中主要有两种用法：一是修饰具体时间，年代，而不是AGE等比较抽象的时间概念；二是，引导一个表时间条件的状语丛句。班门弄斧，请各位大虾指点一下，也好提高。
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