赖世雄教你学英语语法
虚拟语气
5-9:what if...should...?
本句型乃表示与将来状况相反的虚拟语气。if从句要使用助动词should。
例:what if he should come?
= what(might happen/could i do) if he should come?
(要是他来了,怎么办?)
what if it should rain?
= what (might happen/could i do) if it should rain?
(要是下雨了,怎么办?)