Question

SAT一道写作/语法/改错题 The bus would not have had to take the long d

Answer 1

虚拟语气掌握主从句谓语动词的规范搭配：

主句 从句

与现在事实相反 would/情态动词过去式+do were (不分人称)/did

与过去事实相反 would/情态动词过去式+have done had done

与将来事实相反 would/情态动词过去式+do should do / were to do

这句话的意思是“假如那座桥在大雪之后不危险,那公交车也就不要绕远路而直接选择主干道了” 这就是个典型的虚拟语气.

主句与过去的事实相反,公交车肯定是绕道了的,那么从句应该就是if the bridge would not have had become treacherous in the aftermath of an ice storm.