牛人来看一道OG SC题高人求解

zlljolie · 发表于 2011-7-3 08:50:01

14.Sunspots, vortices of gas associated with strong electromagnetic activity, are visible as dark spots on the surface of the Sun but have never been sighted on the sun's poles or equator.
A are visible as dark spots on the surface of the Sun but have never been sighted on
C appear on the surface of the Sun as dark spots although never sighted at
正确选项选A，OG解释说visible和sighted对应，C选项错在although后面应该跟句子，但是C中是短语sighted.

我觉得C也没错啊，状语从句不是有一种省略式吗，就是从句主语和主句主语一致，从句完整是although they have never been sighted at，这里省略了they have never been( sb be)。
牛人看看，这种想法不对吗？

universer · 发表于 2011-7-3 10:54:42

Although 加分词是状语从句省略形式主语只能是sunspots 所以错了

zlljolie · 发表于 2011-7-3 15:13:27

Although 加分词是状语从句省略形式这里如果省略的主语是sunspots ，完整形式是sunspots have never been...语意也是对的啊

牛人来看一道OG SC题高人求解

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