情态动词+虚拟语气 课件-2026届高三英语二轮复习专项

语法讲练 情态动词+虚拟语气 Author: Miss Liu Grammar 目录 情态动词：核心用法与高考高频 情态动词表推测（must / may / might / can / could） 情态动词表责备 / 本应该（should have done） 虚拟语气：三大核心时间（现在 / 过去 / 将来） 虚拟语气：if 条件句 + 倒装 虚拟语气：特殊结构（wish /would rather /suggest 等） 高考真题例句 课堂小测 易错点总结 一、情态动词：核心功能 1. 基本功能 表能力、许可、义务、推测、建议、责备。 2. 高考高频情态动词 can / could / be able to may / might must / have to should / ought to will / would need / dare 3. 核心口诀 推测看语气，责备用完成；虚拟看时间，时态往回退。 二、情态动词表推测 1.must 一定（非常肯定，只用于肯定句） 例：You haven’t eaten anything. You must be hungry. 2.may / might 可能（不确定） 例：He may be in the library. 3.can / could 可能 / 能够（否定 / 疑问推测强） 例：That can’t be Mary. She is away. 4.否定推测：can’t 不可能 （绝对不用 mustn’t） 三、情态动词 + have done（高频考点） 1.must have done 过去一定做了 例：The road is wet. It must have rained last night. 2.can’t have done 过去不可能做了 3.should have done 本应该做（却没做）→责备 例：You should have told me the truth earlier. 4.shouldn’t have done 本不该做（却做了） 5.needn’t have done 本不必做（却做了） 四、虚拟语气：核心逻辑 与事实相反 → 时态往过去退一步 与现在相反：用过去时 与过去相反：用过去完成时 与将来相反：用过去时 /should do /were to do 五、If 虚拟条件句（三大时间表格） 假设时间 If 从句 主句 现在 did / were would/could/should do 过去 had done would have done 将来 did / should do / were to do would do 例句 If I were you, I would accept the offer.（现在） If you had worked harder, you would have passed.(过去) 六、If 虚拟倒装（省略 if） 去掉 if，把 were / had / should 提到主语前 例：Were I you (= If I were you), I would go. Had you studied harder (= If you had studied…), you would have passed. Should it rain tomorrow, we would cancel the sports meeting. 七、虚拟语气：特殊固定句型（必背） 1.wish 但愿 wish + 过去时（现在）/had done（过去） 例：I wish I were a bird. 2.would rather 宁愿 would rather + 过去时（现在 / 将来）/had done（过去） 3.建议 / 命令 / 要求 suggest / advise / demand / require / insist + (should) do 例：The teacher suggested that we (should) read more. 八、高考真题例句 1.You shouldn’t have done such a thing.（2024） 你当初本不该做这种事的。 2.If she had taken my advice, she wouldn’t have failed.（2023） 3.要是她当初听了我的建议，就不会失败了。 4.He must have missed the bus.（2022） 他当时一定是没赶上公交车。 5.The doctor suggested that he (should) rest for a week. 医生建议他休息一周。 九、课堂小测（填空） You __________________ (not, tell) him the truth. It broke his heart. If I __________ (know) the truth, I would have helped you. I wish I __________ (be) a superman. He __________ (can, not finish) the work. It’s too difficult. Had you come earlier, you ________________ (catch) the bus. would have caught shouldn’t have told had known were can’t finish You __________ (must, finish) your homework before you watch TV. He looks upset. He ______________________ (fail) the exam again. You _______________________ (not, waste) so much time playing games. If I __________ (have) more time, I would learn a new language. Without your help, we ___________________________ (not succeed) last week. wouldn’t have succeeded must finish must have failed shouldn’t have wasted had 十、易错点提醒 表否定推测只用 can’t，不用 mustn’t should have done = 本应该（没做） 虚拟一律时态倒退 suggest /insist 表 “建议 / 坚持要求” 才用 (should) do if 倒装只提前 were /had/should Thank You! $