…… 这就是我不赞成haishi 的地方.
与将来事实相反：
1 谓语用动词过去式
If you came tomorrow,we would have the meeting.
如果你明天能来,我们就开会.（可是你不能来.）
2 谓语用 were to + 动词原形
3 谓语用 should + 动词原形
If it were to/should rain tomorrow,the meeting would be put off.
一般而言,将来时态的虚拟句就相当于假设.