Question

为什么要加上should?What if you should fail?为什么句子中要加上should?能不能改为wh

Answer 1

should在这里表示虚拟语气,是一个助动词,美国英语里常常用动词原形来表示,又如：

It is natural that red should make people tense.

It is very important that you should remember the formula.

I suggest that the meeting should be postponed.

在这个句子里,如果把should省去,后面仍然用动词原形.

希望我能帮助你解疑释惑.