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题库 / Prep2007E2-SC-146
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 1970's.
extinction; its numbers are now five times greater than
extinction; its numbers are now five times more than
extinction, their numbers now fivefold what they were
extinction, now with fivefold the numbers they had
extinction, now with numbers five times greater than
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c 名词+分词=独立主格，修饰主句谓语survived，此处两者没因果关系
同de
e选项的 with....为什么不能做逻辑型独立主格啊，修饰主语The gyrfalcon
①have survived a close brush with extinction 差点儿灭绝 have undergone a close brush with death差点儿死了
②说某个东西的数目its numbers的时候只能用greater来形容，不能用more than
③E选项中的with numbers很ambiguous，with谁的number？？
greater 和 more than 错了............. 看了第一个提问 懂了
We don't need a “those” here. 'when the use of ddt was...' is, or at least can be interpreted as, an adverb phrase (not an adjective phrase).
if the descriptive phrase placed there were an adjective phrase (or were being interpreted as one, at least), you'd want 'those' to assure a parallel construction.
A选项：number要用greater,而不是more than来形容；
C选项：their主语是单数，❌
DE选项：冗杂
a选项的its没有指代的歧义吗？
前面能被指代的只有 The gyrfalcon 啊
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1.numbers 和 number 都可以表示数量
2.原件用分号，两个句子，时态不同，前句现在完成时:讲的是鸟从extinction中survive了，后句一般现在时now：补充说明 不仅活下来了，还变成了5倍
D,E 改成with伴随状语，没有写成分号两个句子好。
3.now with错：第一，修饰主语gyrfalcon，表示伴随survive的动作，不合逻辑
第二，前句有with extinction，这里再用with，容易让人产生两者平行的歧义
重点：
1.numbers用greater不用more
2.主语单数用 its 不是they their
做一次错一次
不是很理解这道题是怎样保证平行结构的？求老师和同学解答。
Thanks in advance.
Its numbers are now five times greater than (its numbers were) when the use of DDT was sharply restricted in the early 1970's. 省略了主语和谓语因为一致
now和when时间状语从句平行
1.numbers 和 number 都可以表示数量
2.原件用分号，两个句子，时态不同，前句现在完成时:讲的是鸟从extinction中survive了，后句一般现在时now：补充说明 不仅活下来了，还变成了5倍
D,E 改成with伴随状语，没有写成分号两个句子好。
3.now with错：第一，修饰主语gyrfalcon，表示伴随survive的动作，不合逻辑
第二，前句有with extinction，这里再用with，容易让人产生两者平行的歧义
重点：
1.numbers用greater不用more
2.主语单数用 its 不是they their
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为什么不是最后一个选项？， now with 不能做从句？ 是因为从句里有了主谓了么
“now with numbers five times greater than” does NOT modify the idea of "surviving a close brush with extinction"; instead, it is a much later situation, far removed from (and in considerable contrast to) the near-extinction. Therefore, a modifier is inappropriate here; a separate clause, written in a different tense (as in the correct answer), is a better solution.
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为什么不是最后一个选项？， now with 不能做从句？ 是因为从句里有了主谓了么
greater than与more than的区别？
对比数字大小时，只能用greater than。因为数字只有大小之分，没有多少。
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