6. because of moisture that was exhaled by tourists raising the humidity within them to levels 这里面的raising 是修饰tourists的 所以them 也就必然错误指代了tourists了 21. og 分词做定语需要和主句时态一致,刘振民语法有讲到。而且D的表述如果是做主句主语的定语,则离修饰词太远,易于造成歧义。E不仅有D的错误,而且表述时间的状语在两个逗号中间也会引起歧义。
第一题: (D) because of moisture that was exhaled by tourists raising the humidity within them 。。。raising不恰当地修饰了tourists,这个分词修饰语就相当于tourists raisied the humidity within them ,这读起来就像them指代tourists。 E没有修饰歧义,自然也没有指代歧义 (E) because moisture exhaled by tourists had raised the humidity within them to such levels that salt from the stone was crystallizing。去掉修饰语是moisture exhaled by tourists had raised the humidity within them 。tourists本身跟raise这个动词完全无关,所以跟修饰宾语的them没有关系,没有指代错误。