与将来事实相反的虚拟条件句(通常有时间状语 If+主+did( were to/ should do),主+ would/ should could/ might+动词原形 1如果他明天来的话我会告诉他这件事 If he came here tomorrow. i would tell him about it 2如果他明天来的话我会告诉他 If he were to come here tomorrow. i would tell him与将来事实相反的虚拟条件句(通常有时间状语) If he came here tomorrow, I would tell him about it. If he were to come here tomorrow, I would tell him. 1.如果他明天来的话,我会告诉他这件事. 2.如果他明天来的话,我会告诉他. If + 主 + did(were to /should do), 主+would/should/ could/might +动词原形