1-15( )he come ,what ( )u say to him?

题目

1-15( )he come ,what ( )u say to him?
1.if ,will
2.should ,would
3.when,would
4.would ,do
谁能解释?
不是3

答案

含有should的推测条件状语从句也可以省去连词if而用倒装语序,选2
Should he come = If he should come
再举个例子
If you should change your mind,no one would blame you.
= Should you change your mind,no one would blame you.
如果你改变主意,没有人会责怪你.