下面这个英文句子的结构是怎么的?

题目

下面这个英文句子的结构是怎么的?
Let those people in need understand that we will go all out to help them out of poverty.
老师说 understand 是宾补,怎么说?还有,这句话的主语谓语是什么?这是什么结构啊?

答案

是的.这是祈使句,前面省略了You should,you是被省略的主语.
Let（谓语） those people in need（宾语） understand that we will go all out to help them out of poverty（宾补）
in need是后置定语,修饰people.
that we will go all out to help them out of poverty是understand的宾语从句,做understand的宾语.understand that...组成省略to的不定式短语做宾补.