作者amo18 (要打什麽啦)
看板GMAT
标题[语文] pp1-sc 97
时间Mon Oct 6 01:44:41 2008
Industrialization and modern methods of insect control have improved the
standard of living around the globe while at the same time they have
--------------------------------
introduced some 100,000 dangerous chemical pollutants, having gone virtually
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unregulated since they were developed more than 50 years ago.
(A) while at the same time they have introduced some 100,000 dangerous
chemical pollutants, having
(B) while at the same time introducing some 100,000 dangerous chemical
pollutants that have
(C) while they have introduced some 100,000 dangerous chemical pollutants at
the same time, which have
(D) but introducing some 100,000 dangerous chemical pollutants at the same
time that have
(E) but at the same time introducing some 100,000 dangerous chemical
pollutants, having
正确答案我知道是B
但我想请问 隐约中忘记在哪里看过
助动词省略时候要注意时态的问题
B选项将introduced ==> introducing
时态上的差异并不会影响吗? 还是我记错了 只有再未来式的情况才不能省略
那为什麽又有看过省略後依旧保留原时态的呢?
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在日复一日 整日黑闇的人生中
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1F：推 headnobig:while表同时的动作/情况,就是用进行式..吧 10/06 02:05
2F：→ headnobig:之前老莫教when与while时候的印象 10/06 02:06
3F：推 apipi:此题主要是在考省略型副词子句,1)保留连接词 2)取消主词 10/06 23:39
4F：→ apipi:因为主词相同 3)动词改分词 ! 所以D,E不平衡, A,C主词重复 10/06 23:40
5F：→ apipi:所以你说的助动词问题不在此题范围内! ^^ 10/06 23:42