Question

英语语法

_____it rain tomorrow, we would have to put off the visit to the Yangpu Bridge
A. Were B. Should C. Would D. Will
这里不是用had加上过去分词吗

Answer 1

这是一个虚拟句，从句由if引导，但if省略时，要部分倒装。这句话就属于此情况

又由句意知是对将来情况的虚拟，所以从句为if+过去式（或should+动词原形）

原句应为if it were rain tomorrow, we would have to put off the visit to the Yangpu Bridge

省略if后，为were it rain tomorrow

Answer 2

虚拟从句，选A，
如果明天下雨，我们就不得不放弃去杨浦大桥的游览了。没有SHOULD的意思

Answer 3

虚拟条件句。原句是： If it should rain tomorrow,....表示与将来事实相反。这种条件句
可以省略if ,并要倒装。就变成 should it rain tomorrow,...