一：与过去事实相反的虚拟语气例句和其的倒装句
一）虚拟语气用在与过去事实相反的假设的条件句中：表示假设，后悔或推测。 句型结构：If +主语+had been/done….，主语+should/could/might/would + have done….
1. If the illness had been diagnosed a day earlier, it might have made all different.
2. If she had told him about the danger, he would not have got hurt.
3. If I had known more about giving first aid, I could have helped him.
二：英语虚拟语气中，与现在时相反，与过去事实相反，是什么意思
1.
虚拟现在时表示与现在事实相反的假设，其if 从句的谓语形式用动词的过去式(be 一般用were)，主句用would/ should/ could/ might
+动词原形。If places were alike, there would be little need for
geographers.如果各个地方都一样，就不需要地理学家了。
2.
虚拟过去时是表示与过去事实相反的假设，if 从句的谓语形式用过去完成时即had＋过去分词，主句用would / should / could / might +
have +过去分词。If he had known your address yesterday,he would have telephoned
you.
3.
虚拟将来时是表示对将来实现的可能性很小的或不确定的假设。If从句的谓语形式用一般过去式或用were to / should +动词原形，主句用would /
should/could/ might +动词原形。If he were to leave today, he would get there by
Friday
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