我是这么理解的 句子结构是: sb report sth 某人报告某事 sb=70 percent of hiring managers 主语 report 前面加do 变成强调 成为do report 谓语 sth= screening applicants based on their GPA (宾语) 非谓语动词现在分词 screeni 的宾语 动宾短语 作宾语 所以可以理解为: 70 percent of hiring managers report that they screen applicants based on their GPA 70%的招聘经理报告他们基于GPA筛选申请人