用户中心
学员疑问： Patients who had had a word starting with these letters played during surgery—“limit”，for example—chose that word an average of 11 percent more often than patients who had been played a different word list. 老师，这句话结构不太清楚，还有这个had had有些模糊。
老师解答：结构：Patients（主语） who had had a word starting with these letters played during surgery（who引导定语从句）—“limit”，for example（插入语）—chose（谓语动词） that word（宾语） an average of 11 percent more often than patients who had been played a different word list（状语）. 句意：在手术过程中为其播放过以这些字母开头的单词的患者——例如，“limit”——选择这个单词的频率比那些为其播放过不同单词列表的患者平均高出11%。
点评分析：要做到断句清楚，整体上要提炼句子主干，同时区分修饰成分。who had had a word starting with these letters played中的第一个had是助动词，第二个had是从句的谓语动词，意思并非“有”而是“使得”，这里是have sth. done的结构，即动词+宾语+宾补。
