帮我分析下这句话的句子结构.

问题描述:

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?

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