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should it rain tomorrow,we would have to cancel the football

来源:学生作业帮 编辑:拍题作业网作业帮 分类:英语作业 时间:2024/03/29 22:08:44
should it rain tomorrow,we would have to cancel the football match.为什么should不能用would来替换呢
这是虚拟语气 这边表示与将来的事实相反.
于与将来的事实相反的虚拟有以下几种情况
1.从句谓语用过去式
if it rained tomorrow,our sports meet would be put off
2.从句用should + V原形.
if it should rain tomorrow,.
同样可以用should it rian ,.
3.从句谓语用were to + v原形
if it were to rain ,the .