虚拟语气if条件句与过去事实相反现在事实相反将来事实相反的主句从句的形式是什么

Question

虚拟语气if条件句与过去事实相反现在事实相反将来事实相反的主句从句的形式是什么

Answer 1

1.现在
if + did (were),sub.+ would / could / should / might + do
eg.If I were you,i would go to bed now.
2.将来
if + did (were),sub.+ would / could / should / might + do
eg.If i met him tomorrow,i would tell you.
3.过去
if + had done,sub.+ would / could...+ have done
eg.If you had followed my advice,you could have recovered.