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 existed in what are now temperate areas.
语法 Sentence Correction-347
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huiminzi1124 2016-04-17 11:48:50
1 in which 优于whenCDE 2 now 与currently重复A 3 时态不太重要 4 temperate areas不能分开，是温带的意思E
Rubymaking 2014-04-12 06:56:12
Secondly, if the sentence makes sense in both past and past perfect tense, we should usually go with the past tense rather than the past perfect.
vennie 2016-03-19 08:59:18
exist用一般过去时， temperate areas 温带，固定用法
yuanqr 2016-07-18 11:27:02
temperate area固定 ex: the great ice sheets existed in (what are now temperate) areas. =the great ice sheets existed in areas (that are now temperate). had existed和existed 的区别，根据句意是曾经存在过的而不是曾经一段时间存在过的，因此不必要用过去完成时
bonbonusagi 2016-06-29 01:10:01
in which 优于when；过去时可以表明意思时不用过去完成时
稳定的玉米投手 2016-06-14 21:59:01
My friend told me, as we were graduating from college, that she was in love with that man. My friend told me that, as we were graduating from college, she wa
annie654 2016-05-11 16:15:04
in which 优于when
toujiejie 2016-04-26 15:19:48
temperate areas温带地区，固定搭配
FreyaDoubles 2016-03-09 23:27:30
in which和when 有谁好谁不好嘛？？ what 引导宾从
碗啊婉 2016-02-29 11:32:56
见 11 第十一堂课时态作业.doc
碗啊婉 2016-02-29 11:32:54
见 11 第十一堂课时态作业.doc
