if虚拟语气在不同时态分别是什么形式

if虚拟语气在不同时态分别是什么形式

虚拟语气,件句有真实条件句和虚拟条件句两种。真实条件句所表示的假设是有可能发生的，此时主句不用虚拟语气；而虚拟条件句则表示一种假想，与事实相反或不大可能会发生，此时用虚拟语气。时态类型 主句谓语形式 条件句的谓语形式 例句与现在事实相反 would/should/could/might+ V原 动词过去式 did *be 多用were　 1. If I were you, I should study English. 2. I would certainly go if I had time. 与过去事实相反 would/should/could/might + have done 动词过去完成式 had done 1. If you had taken my advice, you would not have failed in the test. 2. If I had left a little earlier, I would have caught the train. 与将来事实相反 would/should/could/might + V原 ①动词过去式 ②should +V原 ③were + to do　 1.If you came tomorrow, we would have the meeting. ① 2. If it were to rain tomorrow, the meeting would be put off.③ *规律总结：从句都往过去推一个时态，如：与现在相反的if从句就用过去时；与过去相反用过去完成时（即过去的过

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