Do you know what it is?还是Do you know what is it?是宾语从句吗

问题描述:

Do you know what it is?还是Do you know what is it?
是宾语从句吗

前者是对的。 因为 what it is 在句中做宾语从句, 要用陈述语序。 所以
Do you know what it is? 对。

Do you know what it is?
是宾语从句

应该是:Do you know what it is?
其中what it is是宾语从句,宾语从句的语序应该是陈述语序,即主语在前,谓语在后.