情态动词have done表过去推测-2025-2026学年八年级英语下册语法直击真题精讲（鲁教版五四制）

8下鲁教版（五四制） 【语法专项】 直击真题精讲 语法专项 情态动词+have done表过去推测 真题精讲与演练 直击真题高效讲 真题一：单项选择（过去推测语气辨析） (2024山东济南期中，鲁教版) -The ground is all wet.Itrained heavily last night. Yes,the weather report said it would rain A.must have B.might have C.can't have D.should have 答案：A 核心知识点： must have done表对过去情况的肯定推测，意为“一定做了某事”，语气最强： might have done表“可能做了某事”，语气较弱： can't have done表“不可能做了某事”。 解析：由“地面全湿了”和天气报告的提示，可确定昨晚“一定下了大雨”，用must have rained。. 真题二：单项选择（否定及可能性推测）》 (2023山东青岛月考，鲁教版) -Where is Tom?He_finished his homework,for he never leaves it until the last minute. -Maybe he is in the library. A.must have B.can't have C.might have D.should have 答案：A 核心知识点： must have done基于逻辑或习惯的肯定推测： can't have done用于有依据的否定推测(“不可能”)。 解析：根据“他从不把作业留到最后”的习惯，可推测Tom“一定完成了作业”，用must have finished。 8下鲁教版（五四制） 【语法专项】 直击真题精讲 真题三：用所给词的适当形式填空（过去推测句式） (2024山东烟台期末，鲁教版) 1.You-(should)tell her the truth yesterday.Now she is angry with us. 2.The door was locked.They_(can)gone out for a walk.(表可能) 3.He一(must not)taken your book.He never touches others'things.(表不可能) 答案：1.should have2.might have3.can't have 核心知识点： should have done表“本应该做某事（但未做）”； might have done表过去可能发生的事： cam't have done表过去不可能发生的事。 解析： l.“昨天本应该告诉她真相”（实际未告诉），用should have told。 2.“门锁着，他们可能出去散步了”，用might have gone。 3.“他从不碰别人的东西”，故“不可能拿了你的书”，用can't have taken。 真题四：句型转换（将陈述句改为推测句） (2023山东淄博期中，鲁教版) 原句：She was late for class.(用“might have done”改写为推测句) 改写句：She the bus. 答案：might have missed 核心知识点： might have done用于对过去事情的可能性推测，结构为“情态动词+have+过去分词”。 解析：原句“她上课迟到了”，推测原因“可能错过了公交车”，用might have missed。 真题五：短文填空（语境综合推测） (2024山东临沂月考，鲁教版) A:Why didn't you answer my call last night? B:Oh,I'm sorry!I(must)fallen asleep.I was very tired after the exam. A:You _(should)at least sent a message.I was worried. B:You're right.I_(should not)forgotten to tell you. 答案：1.must have2.should have3.shouldn't have 核心知识点： must have done表对过去行为的肯定推测： should have done表“本应该做某事（未做）”： shouldn't have done表“本不应该做某事（但做了）”。 解析： l.“昨晚没接电话”，结合“很累”，推测“一定睡着了”，用must have fallen。 2.“本应该发个消息”（实际未发），用should have sent。 3.“本不应该忘记告诉你”（实际忘记了），用shouldn't have forgotten。 2 8下鲁教版（五四制） 【语法专项】 直击真题精讲 真题综合演练 真题综合演练 I单项选择 1.-The light is on in his room.He_be at home. A.must B.might C.can't D.should 2.She looks upset.She_known the bad news. A.must have B.might have C.can't have D.should have Ⅱ.用所给词的适当形式填空 1.He-(must)finished his homework,because he is playing outside now. 2.You(should)tell me the truth yesterday,but you didn't. Ⅲ.句型转换 l.He was late for the meeting.(用“might have done”改写为推测句) He_ the bus. 2.They finished the project on time.(用“must have done”改写为推测句) They_very hard. V.短文填空 A:Why didn't you come to the party last night? B:I'm sorry.I(must)forgotten.I was so busy with my homework. A:You_(should)called me.I waited for you for a long time B:You're right.I(should not)forgotten.I promise it won't happen again 综合演练参考答案 3 8下鲁教版（五四制） 【语法专项】 直击真题精讲 I.单项选择 1.A2.A Ⅱ.用所给词的适当形式填空 1.must have 2.should have Ⅲ.句型转换 1.might have missed 2.must have worked V.短文填空 1.must have 2.should have 3.shouldn't have