请教一道GMAT SC In the mid-1920’s the Hawthorne Works of the Wes
2个回答

亲~~这是我从CD上copy的某个大牛的讲解~

A:what自身就是一个实意名词,如:what is ur name?(主语what、谓语is、宾语ur name),E中what与the effects共存,犯了双主语的语法错误.若改为:

to investigate what(做have宾语) changes in working conditions would have on workers’ performance

或:

to investigate the effects changes in working conditions would have on workers’ performance

则正确,后者更优,因为what界定范畴过于宽泛,不如the effects更具针对性