分类：教育/科学-外语学习
问题：看一下英语句子是否成立hehasseenwhattaughtin 
he has seen what taught in iness school 。
回答：应为：He has seen what was taught in business school.
全句意思是：他明白了在商业学校被讲授的知识。
你评论中的第一个问题，肯定是不对等的。what he's seen taught in business schools是病句。
第二个问题，what was taught in business school.是宾语从句， taught 在宾语从句中与was 一起构成被动语态和谓语。