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20. The gyrfalcon, an Arctic bird of prey, has survived a close brush with extinction; its numbers are now five times greater than when the use of DDT was sharply
restricted in the early 1970s.
(A) extinction; its numbers are now five times greater than
(B) extinction; its numbers are now five times more than
(C) extinction, their numbers now fivefold what they were
(D) extinction, now with fivefold the numbers they had
(E) extinction, now with numbers five times greater than
在做的时候对than后直接加时间状语从句很疑惑,所以就把ABE末尾是than的都排除了,选了D(忽视了单复数的问题)
现在已经知道其他选项为什么错,可是还是无法理解than后直接加when从句,查阅了一下午资料,翻到一个曾经Ron对这种比较的解释,反而更不懂为什么可以跟when从句了
再此po出那位同学的问题和Ron的解释
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按照Ron的说法,直接跟when的话忽视了时态的变化,所以为什么没用“five times greater than it had when the use....”呢?!?!!
相当困惑了!
麻烦大神解释一下 than+when从句到底是怎么操作的
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