SAT语法题一道,

问题描述:

SAT语法题一道,
The warning in the plays is clear:unless we restore the integrity of the family,all traditional values will disappear.
本句正确,我的问题是:will为什么对,此处难道不是虚拟吗?
然后考过SAT的同学能否帮忙顺便总结一下SAT的虚拟都考些什么?

All traditional values will disappear unless we restore the integrity of the family.
这是很简单的一个条件句,非虚拟语态.