虚拟语气中,should +动词原形的这种结构 后面的动词原形就真的是真正的动词原形连加S都不可以么

虚拟语气中,should +动词原形的这种结构 后面的动词原形就真的是真正的动词原形连加S都不可以么
His desire is that he (should )visit the Great Wall of China someday
It is imperative that the experimenter make accurate measurements
It is important that each of you bring a note-book to class with you every day
在书中看到这些句子请问这样子的话,我可不可以说这种类型(should +动词原形)的后面是不用加S的 只要动词原形就可以了（visit make bring ）
We____better under more favorable conditions
A.do B did C had done D would have done