a historian named herodotus is said to have made a list of what he thought were the greatest structures in the world
问题描述：
a historian named herodotus is said to have made a list of what he thought were the greatest structures in the world
帮忙分析下句型,特别是从句
答
（a historian主语） (named herodotus后置定语解释前面） is said to have made a list of （what he thought were the greatest structures 作of的宾语从句）in the world