[求助]gwd10-20

fishli

Q20:
In the mid-1970’s, since birds were overcome by pollution, and routinely falling from the
sky above Los Angeles freeways, this prompted officials in California to devise a plan
that reduced automobile emissions.

A. since birds were overcome by pollution, and routinely falling from the sky above
Los Angeles freeways, this prompted officials in California to devise a plan that
reduced
B. since birds that had been overcome by pollution were routinely falling from the
sky above Los Angeles freeways, it prompted officials in California to devise a
plan that would reduce
C. birds had been overcome by pollution and routinely fell from the sky above Los
Angeles freeways, prompting officials in California to devise a plan that reduced
D. birds overcome by pollution routinely fell from the sky above Los Angeles
freeways, prompting officials in California to devise a plan to reduce
E. birds overcome by pollution and routinely falling from the sky above Los Angeles
freeways were prompting officials in California to devise a plan to reduce

答案是D  我選A
我有疑惑的是  選項D ,prompting 這個結構 是 指伴隨的動作嗎??  可是前面的主詞是birds  birds不會prompt  我以為是 前半句 這件事prompt official

kenshin

A不对，因为前后两个分句之间无连词连接。

D中的现在分词是修饰前面整个句子的结果状语。

fishli

謝謝大大 我了解了

jian_tao

A不对，this不能单独做主语

E也不对，不是bird促使， 而是bird老是砸下来促使政府采取措施

alan16

這句的主要verb是哪個字啊???

alan16

頂

alan16

頂

jeshenkimo

i think it's " fell". 請指導.

joe11

this 主语

prompted 谓语

paraglider

B应该是答案： since birds (that had been overcome by pollution) were routinely falling (from the
sky above Los Angeles freeways), it prompted officials (in California) to devise (a
plan that would reduce...)

A：的this不能作主语。

E：有2个动词，容易产生误会，搞不清哪个是谓语。