英语的虚拟语气It is strange that he should have acted toward his pa

It is strange that he (should) have made a mistake.如果是虚拟语气sh 关于虚拟语气:it is strange that .should +动词原形. 虚拟语气的问题it is strange that It is strange that he (should) have left withoutsaying doodb it's strange that后面加should吗?是虚拟语气还是竟然的意思? 虚拟语气2It is strange that he ________ back so early. A. came B it is strange that为什么是虚拟语气?虚拟语气不是和事实相反吗? It is stange that he should pass the exam是虚拟语气吗? It is strange that she should have done it. it is strange that he should have failed in this exam It is strange that he should have gone away without telling It is strange that he should have come back so early .