与将来事实相反的英语虚拟语气
与将来事实相反,从句用动词过去式did或should+动词原形v.或were to+动词原形v.主句用should/would/could/might +do,其中从句中should+动词原形时should可省略么?
如lest,for fear that引导的目的状语从句中,should可以省略,The thief ran quickly lest he (should) be seen by the policeman.