一.虚拟语气用于非真实条件句1.表示与现在事实相反条件从句:动词过去式(be动词用were)主句:would(should,could,might)+do If I were you,Iwould go tonight school.2.表示与过去事实相反条件从句:had done主句would(should,could,might)+have done You would have met her if you had come a little earlier.3.表示与将来事实相反条件从句:动词过去式/should+动词原形wereto+动词原形