标题: og 12 sc 84 [打印本页] 作者: naoyixue 时间: 2011-4-6 12:27 标题: og 12 sc 84 84. Often visible as smog, ozone is formed in the atmosphere from hydrocarbons and nitrogen oxides, two major pollutants emitted by automobiles, react with sunlight. (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 请问 react with sunlight 是啥成分？（另外，怎么在帖子里面划线）谢谢作者: aeoluseros 时间: 2011-4-6 12:33
状语从句里面的动词. , two major pollutants emitted by automobiles, --》可以略去作者: naoyixue 时间: 2011-4-6 12:41
xiexie 作者: 大马oz 时间: 2011-4-6 13:09
把选项B放进去。Often visible as smog, ozone is formed in the atmosphere when hydrocarbons and nitrogen oxides, two major pollutants emitted by automobiles, react with sunlight.
主句 ozone is formed in the atmosphere
时间状语从句由when引导，主语hydrocarbons and nitrogen oxides, 插入语two major pollutants emitted by automobiles, 谓语react with sunlight.作者: naoyixue 时间: 2011-4-6 15:05
谢谢大马orz,其实当初就在纠结这个react到底是啥成分，哈哈，谢谢作者: gabbyshen 时间: 2011-12-2 10:16
DING作者: 楷楷楷 时间: 2013-9-17 22:17
Ozone is formed in the atmosphere when hydrocarbons and nitrogen oxides react with sunlight.
