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标题: 【求助大神】OG1588 [打印本页]
作者: Dreamout 时间: 2017-2-12 10:40
标题: 【求助大神】OG1588
（OG1588）Oftenvisible as smog, ozone is formed in the atmosphere from hydrocarbons andnitrogen oxides, two major pollutants emitted by automobiles, react withsunlight.
A ozone is formed in the atmosphere from
B ozone is formed in the atmosphere when
C ozone is formed in the atmosphere, and when
D ozone, formed in the atmosphere when
E ozone, formed in the atmosphere from
Grammaticalconstruction; Idiom
The preposition from is incorrect because ozoneis formed from x and y react is not agrammatical structure. Replacing fromwith the subordinating conjunction when makesthe sentence complete: Ozone is formedwhen x and y react. A main clause is followed by a subordinate clause.
B. The conjunction when introduces a subordinate clause, which completes the sentence correctly and coherently.
E. These changes result in a sentence fragment.
Question：
求问大神选项E，是不是就是句子太零碎化这一个错误而已？还有别的错误么？我个人感觉formed作为过去分词作伴随状语这个是正确的。
作者: 2174576514 时间: 2017-2-12 11:18
回答楼主的问题，formed不是动词，而是形容词...应该理解为come from （ozone comes from two pollute）.... VERB-ED是很讨厌的，可以做动词或是形容词，这里是形容词
你说的对，E不是完整的句子，E的主语ozone没有动词....如果按照句子的结构来看，唯一可能成为ozone动词的动词是react...但react因指的是两种污染物（hydrocarbon and nitrogen oxides）
Often visible as smog,
ozone,
formed in the atmosphere from hydrocarbons and nitrogen oxides,
two major pollutants emitted by automobiles,
react with sunlight.
简化后： ozone, 简介【formed in the atmosphere...】，react with sunlight
作者: Dreamout 时间: 2017-2-12 12:10
同意！
作者: emmahiggins09 时间: 2017-2-13 05:52
E 选项是 SV agreement 的问题。 E 句子主语 Ozone 动词应该用单数 reacts 而不是 react
two major pollutatnts emiddted by automibile 是 hydrocarbons and nitrogen oxides 的同位语，所以是修饰可以直接略去不看，所以句子的主干是
ozone is formed in the atmosphere WHEN hydrocarbons and nitrogen oxides react with sunlight.
作者: Dreamout 时间: 2017-2-13 09:23
同意！
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