帮我分析下这句话的句子结构.

题目

帮我分析下这句话的句子结构.
Make sure that there are no mistakes in your papers before you turn them in.这句话的主、谓、宾分别是什么?that引导的是什么从句?

答案

这是省略的祈使句,整句应该是：
You (please,可有可无) make sure that there are no mistakes in your papers before you turn them in.
主语是：you；
谓语：please make
that是补充说明,不知道该不该叫宾语从句