是的,what在此句中作主语成分. 再问: Mr Smith is searching the internent to find that what is the cause of the earthquake in Qinghai 这句话对吗 再答: 有问题:第一,Internet没有大写;第二,不应该是find,而应该为find out,“找出,查明”;第三,find后面为宾语从句,应该用陈述语序,即主语在前,谓语在后。what the cause of the earthquake in Qinghai is。