关于假设语气的句子.老师1.万一明天下雨,比赛将会延期.If it should rain tomorrow ,the

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关于假设语气的句子.
老师
1.万一明天下雨,比赛将会延期.
If it should rain tomorrow ,the game will be put off.
2.如果明天下雨,我们就取消野餐.
If it rains tomorrow , we will cancel the picnic .
第二个句子是与未来的事实相反,用法我明白,可是第一个我不太明白,我觉得两个都是与未来的事实相反啊,为什么第一个句型那个奇怪呢?
如果第一个句子改成
If it rains tomorrow , the game will be put off .也对吧?
如果明天下雨和万一明天下雨,都是与未来的事实相反啊?假设句怎么会有should呢?
谢谢老师!

1. 第一句如果使用虚拟语气,则为：
If it should rain tomorrow, the game would be put off.
或：If it rained tomorrow, the game would be put off.
或：If it were to rain tomorrow, the game would be put off.
如果使用陈述语气,则为：
If it rains tomorrow, the game will be put off.
2. 第二句如果使用虚拟语气,为：
If it should rain tomorrow, we would cancel the picnic.
或：If it rained tomorrow, we would cancel the picnic.
或：If it were to rain tomorrow, we would cancel the picnic.
如果使用陈述语气,则为：
If it rains tomorrow, we will/shall cancel the picnic.
3. if引导的条件状语从句使用虚拟语气时,如果是对将来的情况虚拟,则
1）if从句谓语由“should + 动词原形”或“were to + 动词原形”或使用一般过去时；
2）主句谓语由“would/could/should/might + 动词原形”构成.
4. 其实楼主所举的这两个例句不用虚拟语气也可以,用不用虚拟语气除了和过去/现在的事实相反之外,更多还是看说话人的语气问题.
如果说话人觉得把握不大,可能就使用虚拟语气；
如果语气较为肯定,则可以直接使用陈述语气.

如果明天不下雨 if it _____ (not rain) tomorrow. 天气预报明天会下雨 The weather forecast said it would rain tomorrow.过 1.what if it Will rain tomorrow? 高中英语虚拟语气If it ______(rain) tomorrow,what shall we do?If it _ 英语翻译一虚拟语气①If it were to rain,we should call off the match.②I 英语翻译我希望明天不下雨.正确的是：I hope it will not rain tomorrow.这样行不行：I d 虚拟语气的练习题Should it rain,the crops _____ .A.would be saved B.w it to rain tomorrow,we should put off the match if it doesn't rain tomorrow we will have a picnic改为虚拟语气 If it---------(not rain) tomorrow,we-----(go)to the park I"II go to the park if it ( )rain tomorrow they will climb the hills if it -----(not ,rain)tomorrow