学员疑问：老师，医学统考英语阅读中有一个句子结构不太清楚，麻烦分析一下。But failure by other researchers to confirm such findings has led skeptics to speculate that the patients who remembered these events might briefly have regained consciousness in the course of operations.

老师解答：本句是一个（主谓宾补）结构：But failure（主语） by other researchers to confirm such findings（后置定语） has led （谓语动词）skeptics（宾语） to speculate that the patients who remembered these events might briefly have regained consciousness in the course of operations（宾补）。其中failure by other researchers to confirm such findings涉及常见搭配failure to do sth.，而by other researchers的by也可以改为of。that引导从句做不定式动词speculate的宾语。

点评分析：其实，只要注意把握框架主干：failure has led skeptics to speculate that....大体意思就有明了了。医学考博英语对阅读速到要求比较高，而阅读文章普遍存在长难句是制约阅读速度的重要因素。因此在阅读做题过程中要有意训练阅读速度，做到边看边断句，把握句子主干，一遍看懂句意。