It is desirable that you should be there by two o'clock.在这里,THAT引导的是什么句子?

问题描述:

It is desirable that you should be there by two o'clock.在这里,THAT引导的是什么句子?

是主语从句.前面的It是形式主语,that引导的句子是真正的主语.
desirable作表语时,其相应的主语从句属于虚拟语气,谓语部分用should+动词原形,should可以省略的.
这个suggest后面的宾语从句是一个道理.
【英语牛人团】请问,还有哪些词做表语时,其相应的主语从句属于虚拟语气呢?important, essential, necessary,impossible、natural、strange等比较常用的这几个你记住就行了。