英语翻译One of the rules is that we are not responsible if the school post office happens to misplace your check should you decide to put it though the mail,which it appears you did.One of the rules is that...后面是表语从句we are not responsible if the school post office happens to misplace your check 这里是条件状语从句请问should在这里是什么语法?

问题描述:

英语翻译
One of the rules is that we are not responsible if the school post office happens to misplace your check should you decide to put it though the mail,which it appears you did.

One of the rules is that...后面是表语从句

we are not responsible if the school post office happens to misplace your check 这里是条件状语从句

请问should在这里是什么语法?

是if 引导的虚拟语气, should在这表客气,是一种表客气的虚拟语气

说半天你就是就是should不理解对吧.
好办.
should除了应该,还有个意思:万一.