While building a tunnel through the mountains, ______.
A.an underground lake was discovered
B.there was an underground lake discovered
C.a lake was discovered underground
D.the workers discovered an underground lake
答案:D
题目分析:考查分词做状语的用法。当分词做状语的时候,分词的逻辑主语要是句子的主语,现在分词的逻辑主语是动作的发出者,过去分词的逻辑主语是动作的承受者。本题使用了现在分词building…做状语,那么building的逻辑主语即该动作的发出者(通常是人)就是后面句子的主语。ABC三项的主语都不是人,故D正确。
点评:当分词做状语的时候,分词的逻辑主语要是句子的主语,现在分词的逻辑主语是动作的发出者,过去分词的逻辑主语是动作的承受者。