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Often visible as smog, ozone is formed in the atmosphere from hydrocarbons and nitrogen oxides, two major pollutants emitted by automobiles, react with sunlight.
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
A 句子结构:“from”之后出现了主谓结构“hydrocarbons and nitrogen oxides……react with sunlight”,但“from”不是分句连接词,不能引导主谓结构。当前版本由 01**** 更新于2015-11-22 12:20:52 感谢由 01**** 对此题目的解答所做出的贡献。
C “when hydrocarbons and nitrogen oxides……react with sunlight”是由“when”引导的从句,而“ozone is formed……”是主句,两者语法功能不一致,结构不平行;
D “ozone”本应是主句的主语,缺少谓语动词,因此主谓结构不完整。
E 同D选项
主语ozone,谓语is formed, hydrocarbons and nitrogen oxides平行,two major pollutans同位语,react动词且符合谓语特征,因此原文句子结构有问题。B选型加when成为从句,react作为从句谓语,结构正确。C and when找不到平行对象,排除。D E主句主干变成了ozone react with..结构改变之后,就改变了原文语义,而且相差过大,排除。
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when hydrocarbons and nitrogen oxides, emitted by automobiles, react with sunlight.
ziyuanguo
a中from后接的是两个名词啊 comma后的句子只是同位语啊……
考GMAT的大树
A 有两个谓语is和react,之间需要连词 B 用when引导从句,完美 C and前后不平行 D 主句缺谓语 E react主谓不一致,应该是reacts
默默
and when 多余,A一个句子两个动词
默默回复默默
D没谓语
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2018-04-26 00:35:15
默默回复默默
E主谓不一致
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2018-04-26 00:38:57
夕阳下的春日部
考点:句子结构 “hydrocarbons and nitrogen oxides, two major pollutants emitted by automobiles, react with sunlight”是完整的句子,应该由引导dependent clause的连词when引导,故排除A,E 又因为是一个dependent clause,所以不能用and隔开,排除C D选项没有谓语动词
四叶草之丘
这道题的中的“two major pollutants emitted by automobiles”可以省略不看,因为react with sunlight中的react是复数形式,所以,它应该是和前面的hydrocarbons and nitrogen oxides搭配。那么后面搭配的是一个完整的句子。所以这里不能在使用 be formed from这个短语,排除A E。那么根据题意,这里when应当引导一个时间状语从句,选B
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句子改错SC
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