虚拟语气-导学案(含答案)-2026届高三英语二轮复习专项

高中英语基础语法-虚拟语气 一、虚拟语气核心概念 虚拟语气表示说话人的主观愿望、假设、猜测、建议等，所述情况并非客观事实，或与事实相反、不可能实现。 核心逻辑：退一步时态（与真实时态相比，虚拟时态往过去退一格）。 二、虚拟语气类型 （一）If条件句虚拟 1：与现在事实相反 - 从句：If + 主语 + 动词过去式（be动词统一用were） - 主句：主语 + should/would/could/might + 动词原形 例句：If I were you, I would accept the offer. 2：与过去事实相反 - 从句：If + 主语 + had + 过去分词 - 主句：主语 + should/would/could/might + have + 过去分词 例句：If you had come earlier, you would have met her. 3：与将来事实相反（可能性极小/不可能） - 从句：① If + 主语 + 动词过去式 ② If + 主语 + should + 动词原形 ③ If + 主语 + were to + 动词原形 - 主句：主语 + should/would/could/might + 动词原形 例句：If it should rain tomorrow, the match would be put off. 条件状语从句与主句虚拟 (1)表示与现在事实相反的假设 a. If they _____ (be) here, they _____ (take) your advice. b. If the world-war _____ (burst) out again, what _____ (happen) to our people on earth (2)表示与过去事实相反的假设 a. If Tom_____(be) more careful in the exam, he _____ (pass) it already. b. If you _____ (get) up earlier, you _____ (catch) the first train. (3)表示与将来事实相反的假设 a.If the teacher_____(ask)me to solve the problem next time, I could try my best. 公式总结： 时 间 If 条件句 主 句 过去 现在 将来 If虚拟语气特例 (1)介词短语but for(要不是), without, otherwise(否则), in that case(如果是那样的话), 表示含蓄的条件,这时主句要用虚拟语气。 Without /But for your help, we would not have made such rapid progress. 没有if，但用介词、副词、连词暗含虚拟条件，相当于一个隐藏的if从句，主句时态规则不变。 1. without（=If there were no/If there had been no） Without your help, we couldn’t have finished the task. =If it had not been for your help,… 2. but for（要不是）But for the rain, we would have gone camping. 3. otherwise / or（否则） I was busy. Otherwise, I would have helped you. 4. but（但是，表实际与虚拟对比）I would have attended the party, but I was ill. (2)错综条件句 = 主从句时间不一致 - if 从句 说的是过去 - 主句 说的是现在/将来 或反过来（高考主要考：从句过去，主句现在） If + 主语 had done（过去虚拟），主语 would / could / might do（现在虚拟） 1. If you had followed my advice, you would be much better now. 如果你当时听了我的建议，你现在就会好多了。 2. If he had taken medicine yesterday, he would not be ill now. 如果他昨天吃了药，现在就不会生病了。 (3) 省略if的倒装 当if条件句中有were/had/should时，可省略if，将were/had/should提到主语前。 Were I you,… Had you studied harder,… Should it rain tomorrow,… （二）：情态动词相关的虚拟语气 1. 情态动词+have done 表虚拟/遗憾 - should have done：本应该做（却没做） - shouldn’t have done：本不该做（却做了） - could have done：本能够做（却没做） - might have done：本可能做（却没做） - needn’t have done：本不必做（却做了） - would have done：本会做（却没做） （三）宾语从句中的虚拟 1. 表示坚持、命令、建议、要求 后从句用：(should) + 动词原形 - 坚持：insist - 命令：order, command - ... ...