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标题: 比较时助动词尽量补出 [打印本页]

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作者: 北溟鱼    时间: 2005-11-3 12:23
标题: 比较时助动词尽量补出

4. Because natural gas is composed mostly of methane, a simple hydrocarbon, vehicles powered by natural gas emit less of certain pollutants than those burning gasoline or diesel fuel. (C-p8-16)

本句没有补出，是否说明也可以不补出，当然补出更好？

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作者: joe11    时间: 2005-11-3 22:21

是的，补出更好，但千万别补错了。

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