英语句子结构,Amiddaynapnotonlycanrestorebrainpowertoitsfullyawakebestbutcanalsoraiseitbeyondwhatitwouldhavebeenwithoutsomeshut-eye.午睡不仅可以最大程度上将脑力恢复到完全清醒状态,同时还可以

Question

英语句子结构,
A midday nap not only can restore brain power to its fully awake best but can also raise it beyond what it would have been without some shut-eye.
午睡不仅可以最大程度上将脑力恢复到完全清醒状态,同时还可以使脑力在原没有睡眠的基础上有所提高.
请问：1、从but can also开始到结束的后半句中,beyond是什么意思,属于raise还是what?
2、后半句中哪部分表述“原”,再请您举几个例子,表述‘原’的意思,

Answer 1

beyond此处的意思是超出的意思,为一介词,后面是what引导的宾语从句,构成介宾结构,修饰谓语raise.
后半部分would have been 为虚拟语气.如I would have told you all about the boy's story,but you didn't ask me.我原本会告诉你这个小男孩的故事,但是你没有问我.