你提到的应该是虚拟语气句，本该做某事（实际上未做）应该用：should have done例句：I should have watered the trees.我本该浇浇那些树的。I should have locked the door.我本该把门锁好的。希望对你有所帮助。
should have done 虚拟语气，带谴责的含义
should have done第一单元的
