in which & when的疑问~

AlexYYY

peggy在奋斗 发表于 2012-2-11 13:36
对，in which 和when地位是平等的，但是比where好，所以不能根据这个排除in which ...

根据Ron的答复。Peggy说的是对的。 刚刚看懂D选项的 existed in current temperate areas 是说 ice sheet 存在于当前的温带。 跟B答案有本质的区别。 B答案是说： 存在于当前是温带的区域（隐藏含义，之前不是）。 而E ares Now that are temperate    一个是now的位置不对，体会于 areas that are now temperate的区别

shangjiongj

AlexYYY 发表于 2013-7-18 20:55
根据Ron的答复。Peggy说的是对的。 刚刚看懂D选项的 existed in current temperate areas 是说 ice sheet ...

哦d确实不对。我想问一下B的what are now temperate areas，怎么感觉好奇怪？

dongtingz

我也想问这边为什么不能用过去完成时

胡萝卜胡萝卜

shangjiongj 发表于 2013-7-19 22:35
哦d确实不对。我想问一下B的what are now temperate areas，怎么感觉好奇怪？

只是个定语从句罢了

berylzhang

我觉得是因为 不用had done 也可以知道事情发生在led to propose 这个动作之前
所以不需要额外用had done来表示动作发生的顺序了

InfiniteAlex

Ron:the emphasis of the sentence is on the fact that the ice sheets ACTUALLY EXISTED during this time. the sentence is not meant to emphasize the persistence of the ice sheets before that age, nor is it meant to suggest that the existence of the ice sheets was a completed action. therefore, the regular past tense is better.