A
what在主语从句中作主语,即作谓语动词caused的执行者。在下面的例句中,that不充当任何成份,只起语法连接作用(因为句子本身不缺成分):
That the former Iraq president Saddam was captured has been proved.
A
what在主语从句中作主语,即作谓语动词caused的执行者。在下面的例句中,that不充当任何成份,只起语法连接作用(因为句子本身不缺成分):
That the former Iraq president Saddam was captured has been proved.