资源简介 Day15.情态动词 (can/may/must/should/ought to/used to) 基本意义、否定陷阱与推测用法参考答案与详解第一部分:单项选择1.B | 【解析】第一空表请求许可用 Can/May;第二空根据“禁止停车”牌可知是禁止,用 mustn't。2.C | 【解析】[必考点] Must 引导的一般疑问句,否定回答用 needn't 或 don't have to,表示“不必”。3.B | 【解析】根据“她去英国度假了”这一证据,排除她是图书馆那个人的可能性,用 can't 表示“不可能”。4.B | 【解析】坚定的否定推测。证据是“他比那个人高得多”。5.A | 【解析】表示“禁止”,用 mustn't。6.C | 【解析】根据“I'm not sure”可知是不确定的推测,用 might。7.A | 【解析】表示“不应该”,是对节约用水的建议。8.B | 【解析】根据“她现在正在琴房练习”这一明确证据,推测那个人“一定是”她。9.A | 【解析】ought to 等于 should,表示“应当”,强调道德责任。10.B | 【解析】used to do sth. 表示“过去常常(现在不做了)”。后半句的 be used to living 表示现在习惯于。第二部分:语法填空11.should | 【解析】建议或义务,应当。12.must/may | 【解析】有名字作证据,must 语气更强,may 较婉转。中考若给 may 提示通常填 may。13.used | 【解析】used to do sth. 过去常常。14.needn't | 【解析】Must 问,needn't 答。15.must | 【解析】“刚看到他在找”是强有力的证据,表肯定的推测。第三部分:综合应用16.B | stay | 【解析】情态动词后直接接动词原形,不能带 to。17.is used to getting up | 【解析】注意“习惯于”是 be used to doing sth.,不要误用为 used to do。18.can't be | 【解析】否定的推测用 can't be。30 天早背晚练——初中英语语法强基训练计划Day 15:情态动词 (can/may/must/should/ought to/used to) 基本意义、否定陷阱与推测用法一、 核心情态动词基本意义及用法情态动词本身有词义,但不能独立作谓语,后接动词原形,无三单变化。-动词 基本意义与语气 典型例句can/could 能力(能/会);许可(可以);推测(可能性) I can swim. / Can I go now may/might 许可(可以,比 can 更委婉);推测(可能/也许) May I come in / He may be at home.must 义务/命令(必须);肯定推测(一定/准是) Youmust finish it. / Itmust be him.should 建议/责任(应该/应当) You should brush teeth every day.Ought to 道德义务/责任(应当) You ought to look after your parents.used to 过去常常(现在已不做了) He used to smoke, but now he stops.-二、 中考常考陷阱:否定含义与问答对应情态动词的否定式往往不是肯定式的简单反义,这是命题人最爱设坑的地方。1. 否定词义“大变脸”can't: 不可能(表推测);不能(表能力)。may not: 可能不(表推测);不可以(表禁止,语气较弱)。mustn't: 千万不可/禁止(表警告、禁止),绝非“不必”。needn't: 不必。2. 问答“不对应”逻辑(必背考点)Must I... (我必须……吗?)肯定回答:Yes, you must. 否定回答:No, you needn't / don't have to. (不,你不必。)May I... (我可以……吗?)肯定回答:Yes, you can/may. 否定回答:No, you can't/mustn't. (不,不行/禁止。)三、 重点:表示“可能性”的推测用法中考完形填空和阅读理解常通过上下文逻辑考查推测的强度。-强度分类 对应动词 适用语境 举例100% 肯定 must 有确凿证据的肯定推测 The light is on. He must be at home.20%-80% 不确定 may / might / could 语气委婉,不确定 Itmight rain, but the sky is blue.100% 否定 can't 语气坚定的否定推测 He can't be in Beijing. I saw him here.-注意: 在疑问句中,表示“可能”通常只能用 can。 例: Can the news be true (这消息可能是真的吗?)第 37 页 共 85 页四、 难点辨析:ought to, should 与 used to1. ought to vs. should二者多可互换,均表建议。但 ought to 语气更重,常带有“法律、义务、道德责任”的色彩。否定式为 ought not to。2. used to 的结构与混淆used to do sth.: 过去常常做某事(隐含现在不做了)。be/get used to doing sth.: 习惯于做某事(be 为系动词,后面接动名词)。be used to do sth.: 被用来做某事(被动语态)。五、 做题技巧与记忆口诀1.“必须”问,“不必”答:看到 Must I,否定回答先找 needn't。2.推测三原则:肯定用 must,否定用 can't,疑问用 can,不准(不确定)用 may/might。3.情态动词后“变回原形”:无论主语是几人称,情态一出,动词打回原形,切记不可加 s、增加 ing 或用过去式(除could/might 自身作为情态动词外)。六、 出题方向参考语境辨析: 给出一段对话,根据“安全规则”或“礼貌原则”选择 mustn't 或 may。推测逻辑: 结合上下文证据(如 She has a key),判断该用 must 还是 can't。Used to 变形: 在语法填空中,区分 used to be 与 is used to being。第 38 页 共 85 页30 天早背晚练——初中英语语法强基训练计划Day 15: 情态动词 (can/may/must… )基本意义、否定陷阱与推测用法【配套练习】姓名: 日期: 分数:一、 单项选择【目标:辨析基本词义、回答陷阱与推测逻辑。】1.(2024·江苏)— ________ I park my car here — No, you ________. Look at the sign "No Parking".A. Must; needn't B. Can; mustn't C. May; shouldn't D. Should; can't2.(2023·武汉)—Must I finish the report today, Mr. Lee — No, you ________. You can hand it in tomorrow.A. mustn't B. can't C. needn't D. shouldn't3.(2022·北京) The girl in the library ________ be Lily. She has gone to the UK for a holiday.A. must B. can't C. may D. needn't4.(2024·模拟预测)— Is that man Mr. Smith — It ________ be him. He is much taller than that man.A. mustn't B. can't C. may not D. shouldn't5.(2023·上海) You ________ take photos in the museum. It’s not allowed.A. mustn't B. needn't C. can D. may6.(2022·广东)— Shall we go for a picnic this Sunday — I'm not sure. It ________ rain.A. must B. should C. might D. need7.(2021·天津)We ________ waste water. It is very important for us to save it.A. shouldn't B. needn't C. can D. may8.(2024·预测)— Look! Someone is playing the piano. Is it Lucy — It ________ be her. She is practicing the piano in the music room now.A. can B. must C. might D. should9.(2023·重庆) Parents ________ be more patient with their children.A. ought to B. may C. used to D. might10.(2022·南京) He ________ live in the countryside, but now he is used to living in the city.A. is used to B. used to C. was used to D. uses to二、 语法填空【目标:考查推测词的选择与 used to 结构的辨析。】11.(2023·河南) Since you are a student, you ________ (should) obey the school rules.12.(2024·四川)—Whose dictionary is this — It ________ (may) be Mary's. There is her name on it.13.(2022·杭州)My grandfather ________ (use) to go for a walk after dinner, but now he likes watching TV.14.(2024·模拟预测)—Must I come back before ten o'clock — No, you ________ (need).15.(2023·广州) The key ________ (can) be his. I saw him looking for it just now.三、 综合应用:纠错与翻译【目标:强化易错点与固定搭配。】16.(纠错) (A)Must I (B) to stay at home (C) on (D) Sundays 错误项:______ 改正:____________17.(翻译) 他习惯于早起。(使用 used to 相关的正确结构)He ________________________________________________ early.18.(翻译) 这本字典不可能是我的,因为我的在家里。(使用 can/can't 表推测)This dictionary ________________ mine because mine is at home.第 39 页 共 85 页 展开更多...... 收起↑ 资源列表 【30天早背晚练】初中英语语法强基训练计划Day 15.pdf 初中英语语法强基30天训练计划(答案)_15.pdf