Unit2 情态动词表推测专项训练2026-2027学年人教版英语九年级下册

**基本信息** 以“推测语气强弱-结构形式-语境应用”为逻辑主线，通过分层训练与三步解题法系统突破情态动词表推测考点，培养学生语境分析与逻辑推理能力。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |语法地图|1份|梳理推测语气强弱与对应结构|从概念分类到结构应用，构建“语气-时态-语境”三维认知| |语法要点精讲|5类结构|结合例句解析用法与中考注意点|以must/may/can't为核心，延伸到进行时与过去推测结构| |易错点警示|5大警示|辨析mustn't与can't等易混点|针对学生典型错误，强化语法规则精准理解| |分层练习|36题|基础关三步解题法，进阶关结构判断法，冲刺关关键词定位法|从单题到语篇，实现“识别-应用-迁移”能力递进|

人教版九年级下册英语·语法专题突破卷 Unit 2 情态动词表推测 专题2 情态动词表推测 （对应 Unit 2 A Look into the Past） 【教师版】（含完整答案与超详解析） 一、语法地图 【对应单元】人教版2024 · 九年级下册 · Unit 2 A Look into the Past 【中考考法】单项选择、完形填空、短文填空中考查根据语境判断推测语气强弱（must/may/might/could/can't），以及对过去推测的情态动词 + have done 结构。分值约2~4分。 【卷面总分】本卷满分 54 分。 推测语气强弱 结构形式 must（一定）肯定推测，证据充分 must + do/be may / might / could（可能/也许）不确定 may/might/could + do/be can't（不可能）否定推测，证据充分 can't + do/be 对正在进行的推测 情态动词 + be + doing 对过去/已完成的推测 情态动词 + have + done 二、语法要点精讲 结构 用法 例句 中考注意 must + do/be 有把握的肯定推测（只用于肯定句） The bronze mask must belong to ancient Shu people. 这个青铜面具一定属于古蜀人。 [★常考] 否定推测不用 mustn't，而用 can't may/might/could + do/be 把握不大的可能性推测 That small jade piece might be a kid's toy long ago. 那件小玉件或许是古时候小孩的玩具。 might / could 语气比 may 更弱、更不确定 can't + do/be 有把握的否定推测 This modern coin can't be from the Tang Dynasty. 这枚现代硬币不可能出自唐代。 [⚠️易错] mustn't 表'禁止'，不表推测 情态动词 + be + doing 对正在发生的事情进行推测 She must be doing her homework at home now. 现在她一定正在家里做作业。 情态动词 + have + done 对过去或已完成事件的推测 The ground is wet. It must have rained last night. 地面是湿的，昨晚一定下雨了。 [★常考] 本单元阅读高频考点 三、易错点警示 【警示1】mustn't ≠ can't：否定推测的大坑 我带的班常错在把 mustn't 当成 must 的否定推测。记住：mustn't 意思是'禁止、不准'，如 Visitors mustn't use flash when taking photos in the exhibition hall.（参观者严禁在展厅拍照时使用闪光灯。）而否定推测必须用 can't，如 He can't be at home.（他不可能在家。） 【警示2】might / could 不是过去式 学生看到 might 就以为是 may 的过去式，看到 could 就以为是 can 的过去式。在表推测时，它们只是语气更弱、更不确定，不表示过去时间。例：It might rain this afternoon.（今天下午也许会下雨。）说的是将来！ 【警示3】can 表推测时的句式限制 can 表'可能'时只用于否定句和疑问句，肯定句中表推测要用 may/might/could。比较：Can it be true?（这可能是真的吗？）/ It may be true.（这可能是真的。）/ It can't be true.（这不可能是真的。） 【警示4】have done 前千万别加 be 学生写对过去推测时，常画蛇添足写成 must be have done。正确的结构是：情态动词 + have + 过去分词，中间没有 be。例：He must have known the truth.（他一定已经知道了真相。） 【警示5】对现在的推测用动词原形，不是进行时 除非有明确证据表明动作正在进行，否则对现在的推测用情态动词 + 动词原形即可。别看到 now 就加 be doing。例：He must be tired now.（他现在一定累了。）不是 must be being tired。 但注意：如果语境给出了动作正在进行的直接证据（如 I can hear the pages turning），就要用 must / can't + be + doing 对正在进行的动作进行推测，如 He must be reading in the study.（能听到翻页声，他一定正在书房看书。） 四、分层练习 基础关 ★ 单项选择（共12题） 1. —Look at that ancient gold stick! It ______ be valuable. —I agree. It ______ be cheap. A. may; mustn't B. must; mustn't C. must; can't D. can; can't 【答案】C 【解析】第一空：'那根古代金杖'暗示有充分证据，是肯定推测，用 must（一定）。第二空：'我同意'说明认同'不便宜'，否定推测用 can't（不可能）。mustn't 表禁止，不表推测。 【考点】肯定推测用 must，否定推测用 can't 2. The plastic bottle ______ an ancient artifact from the Han Dynasty. A. can't be B. must be C. may be D. might be 【答案】A 【解析】塑料瓶是现代物品，不可能是汉代古文物。有充分证据的否定推测用 can't be（不可能是）。must be 是肯定推测，与句意相反；may/might be 表示不确定，语气太弱。 【考点】有依据的否定推测用 can't 3. —Who is the man digging beside the Terracotta Army? —He ______ an archaeologist. No other workers wear that uniform. A. can't be B. might be C. could be D. must be 【答案】D 【解析】'没有其他工人穿那套制服'是强有力的证据，说明说话人有把握确定身份。肯定推测且证据充分，用 must be（一定是）。 【考点】有确凿证据的肯定推测用 must 4. You ______ touch the unearthed relics. It is strictly forbidden. A. can't B. mustn't C. may not D. might not 【答案】B 【解析】句意是'严禁触碰出土文物'，表示禁止、命令，用 mustn't（禁止）。can't 表'不可能'（推测），may not / might not 表'可能不'，均不符合句意。 【考点】mustn't 表禁止，不表推测 5. The broken pot ______ hold wine or water; we have no clear proof. A. must B. can't C. may D. mustn't 【答案】C 【解析】'我们没有明确证据'说明是不确定的推测，用 may（可能）。must 表示肯定推测，语气太绝对；can't 是否定推测，与句意不符；mustn't 表禁止。 【考点】无充分证据的不确定推测用 may/might/could 6. —Is Jimmy in the classroom? —No, he ______ be there. I saw him playing basketball on the playground just now. A. can't B. mustn't C. might not D. may not 【答案】A 【解析】'我刚才看见他在操场打篮球'是有力的反证，说明 Jimmy 不可能在教室里。有把握的否定推测用 can't be。 【考点】有反证的否定推测用 can't 7. The foreign beads found in Sichuan ______ have come along ancient trade routes thousands of years ago. A. mustn't B. can't C. can D. might 【答案】D 【解析】'数千年前'提示是对过去的推测，结构为情态动词 + have done。句意是不确定的推测（没有确凿证据），用 might have come（可能经由……传来）。can't have come 是否定推测，与考古发现的语境不符。 【考点】对过去的不确定推测：might/may/could have done 8. A: The archaeologist's hands are covered in soil. B: He ______ work at a dig site. A. might B. must C. can't D. could 【答案】B 【解析】'手上沾满泥土'是明确的证据，说明他肯定在挖掘现场工作。肯定推测用 must。 【考点】基于直接证据的肯定推测 9. This new metal tool ______ belong to ancient people 2,000 years ago. Metal tools like this didn't exist then. A. must B. might C. can't D. could 【答案】C 【解析】'当时不存在这样的金属工具'是明确的否定证据，说明这件工具不可能属于古人。否定推测用 can't。 【考点】有明确否定证据时用 can't 10. —Where are you going this summer vacation? —I ______ go to Xi'an to see the Terracotta Army, but I'm not sure yet. A. might B. must C. should D. can 【答案】A 【解析】'but I'm not sure yet'（但还不确定）说明是不确定的推测，用 might（也许）。must 太肯定；should 表建议；can 表能力或许可，均不符合。 【考点】不确定时用 might/may/could 11. The scientist says the golden mask ______ have been made by machines, because there were no machines in ancient times. A. must B. can’t C. might D. could 【答案】B 【解析】"古代没有机器"是明确的反证，说明金面具不可能是机器制造的，对过去的否定推测用 can’t have done。must 是肯定推测，与句意相反；might/could 表示不确定，语气太弱。 【考点】对过去的否定推测 can’t have done 12. —Where is Dad? —He ______ reading the newspaper in the study. I can hear the pages turning. A. must be B. can be C. must have D. may have 【答案】A 【解析】"能听到翻书声"是正在发生的直接证据，对正在进行的动作的肯定推测用 must be doing。can 在肯定句中不表推测；must have / may have 后接过去分词表对过去的推测，与"正在"语境不符。 【考点】对正在进行的肯定推测 must be doing 进阶关 ★★ 语法填空（共12题） 1. 从括号内选择正确的情态动词填空。 The well-preserved bronze tree ______ (must / can't) be a treasure of Sanxingdui. It was unearthed right there. 【答案】must 【解析】'就在那儿出土的'是确凿证据，肯定推测用 must。 【考点】肯定推测 must 2. The souvenir sword sold at the gift shop ______ (can't / might) be a real ancient weapon. It was made last year. 【答案】can't 【解析】'去年才制造'是否定证据，用 can't be（不可能是）。 【考点】否定推测 can't 3. The experts guess the gold mask ______ (may / can't) have been used for religious ceremonies in ancient Shu. 【答案】may 【解析】'专家们猜测'说明没有确凿证据，是不确定推测，用 may have been used（可能被用于）。 【考点】对过去的不确定推测 may have done 4. Look at the soldier's uniform in the Terracotta Army. He ______ (must / could) be a royal guard. 【答案】must 【解析】兵马俑中不同身份的士兵有不同装束，根据装束判断是肯定推测，用 must be。 【考点】基于特征的肯定推测 5. The broken pottery ______ (might / must) date back to the Shang Dynasty; we need more tests to be sure. 【答案】might 【解析】'需要更多测试才能确定'说明目前没有充分证据，是不确定推测，用 might（也许）。 【考点】证据不足时用 might 6. That tiny jade carving ______ (could / can't) weigh less than 10 grams. It looks so small and light. 【答案】could 【解析】'看起来又小又轻'是不确定的推测依据，用 could（可能），语气比 can 更委婉。 【考点】不确定推测 could 7. The person buried here ______ (can't / may) be poor—there are lots of gold objects in the tomb. 【答案】can't 【解析】'墓里有很多金器'是明确证据，说明墓主人不可能是穷人。否定推测用 can't。 【考点】有反证的否定推测 can't 8. The ancient stone bridge ______ (must / might) have taken a long time to build. Every stone was cut and fitted by hand. 【答案】must 【解析】'每块石头都经手工开凿与拼合'是明确证据，说明建造一定花了很长时间。基于证据的肯定推测，用 must have taken（一定花了……）。 【考点】对过去的肯定推测 must have done 9. These ancient coins ______ (can't / could) be from China. The words on them are in a foreign language. 【答案】can't 【解析】'钱币上的文字是外文'是否定证据，说明不可能来自中国。否定推测用 can't。 【考点】外观特征作为否定证据 10. Some people guess the underground palace ______ (can / might) have been built for an ancient king. No written records mention it. 【答案】might 【解析】'一些人猜测'且'没有文字记载'说明没有确凿证据，是对过去的不确定推测，用 might have been built（可能为……而建）。 【考点】对过去的不确定推测 might have done 11. The bronze mirror ______ (might not / can’t) have been made in that workshop, because the ancient masters left no record of it. 【答案】might not 【解析】"没有留下记录"只是缺少证据而非明确反证，用 might not have been made（可能不是在……制造的），表示不确定的否定；can’t have been made 表示"不可能"，需有明确反证才用。 【考点】不确定否定用 might not，确定否定用 can’t 12. The workers ______ (must be / can’t be) repairing the ancient bridge now, because the work site is completely silent. 【答案】can’t be 【解析】"工地一片寂静"是明确反证，说明工人们不可能正在修桥，对正在进行的否定推测用 can’t be doing。must be 是肯定推测，与句意相反。 【考点】对正在进行的否定推测 can’t be doing 冲刺关 ★★★ 句型转换·翻译·语篇应用（共12题） 1. 按要求完成下列各题，每空一词。 The light is on. Jason is at home.（合并为含 must 的推测句） The light is on. Jason ______ ______ at home. 【答案】must be 【解析】'灯亮着'是证据，用 must be 表示有把握的肯定推测。 【考点】must be 表肯定推测 2. Mr. White is not in his office. I saw him walking to the meeting room just now.（合并为含 can't 的推测句） Mr. White ______ ______ in his office. I saw him walking to the meeting room just now. 【答案】can't be 【解析】'我看见他出去了'是反证，用 can't be 表示有把握的否定推测。 【考点】can't be 表否定推测 3. The workers spent many years building the Terracotta Army.（改为含 must 的推测句） The workers ______ ______ ______ many years building the Terracotta Army. 【答案】must have spent 【解析】对过去事件的肯定推测用 must have + 过去分词。'兵马俑工程量巨大'是证据。 【考点】must have done 对过去的肯定推测 4. 将下列句子改为同义句。 Perhaps this ancient map is wrong. This ancient map ______ ______ wrong. 【答案】may be / might be / could be 【解析】Perhaps 表示不确定的推测，可转换为 may be / might be / could be。 【考点】perhaps = may/might/could 5. 翻译句子。 这件古代玉璧不可能是日常用品，它的做工太精美了。 _____________________________________________. Its workmanship is so fine. 【答案】This ancient jade bi can't be an everyday object 【解析】'不可能是日常用品'用 can't be an everyday object。'古代玉璧'译为 ancient jade bi。 【考点】can't be + 名词 表否定推测 6. 翻译句子。 考古学家们也许在其他地方发现过类似的文物。 The archaeologists ______ ______ ______ similar artifacts in other places. 【答案】might have found 【解析】'也许发现过'是对过去的不确定推测，用 might have found。 【考点】might have done 对过去的不确定推测 7. 句型转换。 It is possible that the ancient people knew advanced metal-making skills.（用情态动词改写） The ancient people ______ ______ ______ advanced metal-making skills. 【答案】may/might/could have known 【解析】It is possible that... 表示不确定，可转换为 may/might/could have known（可能知道过）。 【考点】It is possible that... = may/might/could have done 8. 改错：找出句中的一处错误并改正。 The clay figure mustn't be a soldier. It wears a general's uniform. 错误：______ 改正：______ 【答案】mustn't → can't 【解析】'穿着将军的制服'说明这个陶俑一定是将军而不是普通士兵，即'不可能是士兵'，应改为 can't 表否定推测。mustn't 表禁止，不表推测。 【考点】mustn't ≠ 否定推测，否定推测用 can't 9. 改错：找出句中的一处错误并改正。 He can be at home now. His schoolbag is still here and I can hear him talking upstairs. 错误：______ 改正：______ 【答案】can → must 【解析】'书包还在这儿'和'能听到他在楼上说话'是双重确凿证据，是肯定推测。can 在肯定句中不表推测，应改为 must。 【考点】肯定句中表推测不用 can，用 must/may/might/could 10. 【语篇应用】阅读短文，用适当的情态动词（must / may / might / could / can't）填空，每空一词。 The Mystery of the Ancient Horn Archaeologists found an object with a curved shape in an ancient tomb. It looks like an animal horn. Dr. Li said, 'It (1)______ be a horn of some kind. The curved shape is very typical.' However, some researchers disagree. 'We found new evidence that questions the old idea,' said Dr. Wang. 'So the old idea (2)______ be wrong. We need more evidence to be sure.' Near the tomb, some gray powder was discovered. 'What (3)______ it be?' asked a young archaeologist. Dr. Li guessed, 'It (4)______ be ash, but I'm not sure — it (5)______ also be dust or something else.' In the special exhibition hall, they found beautiful silk clothing from the Han Dynasty. 'It's so thin and light. It (6)______ be very heavy. Maybe it weighs only a few hundred grams,' said Dr. Wang. Looking at the famous mystery of King Tut's death, Dr. Li said, 'There are many theories. It (7)______ be an illness. Ancient records say he was often sick. But we (8)______ be certain without more proof.' 【答案】(1) must（唯一） (2) may / might / could 均可 (3) could / can 均可 (4) might / may / could 均可 (5) could / may / might 均可 (6) can't（唯一） (7) could / may / might 均可 (8) can't（唯一） 【解析】(1) '弯曲的形状非常典型'是确凿证据 → must。(2) '新证据质疑旧观点'，不确定 → may。(3) 疑问句中表推测用 could（What could it be?）。(4) '我不确定' → might。(5) '也可能是' → could。(6) '又薄又轻'，不可能重 → can't。(7) '有许多理论'，不确定 → could。(8) '没有更多证据'，不可能确定 → can't。 【考点】综合语境判断情态动词语气强弱 11. 根据汉语提示完成句子，每空一词。 那会是真的吗？（can） ______ it ______ true? 【答案】Can; be 【解析】can 表推测只用于否定句和疑问句，肯定句中不表推测。对现在情况发问"这可能是真的吗"，用 Can it be true?。 【考点】can 在疑问句中表推测 12. 改错：找出句中的一处错误并改正。 He must be have visited the museum last week. 错误：______ 改正：______ 【答案】be → 删去（be） 【解析】"last week"提示是对过去的推测，正确结构是 must have visited（情态动词+have+过去分词），中间不加 be。应删去 be：He must have visited the museum last week. 【考点】情态动词+have+过去分词，中间不加 be 五、答案与超详解析汇总 【评分标准】（练习卷参考使用，分值可按校情调整；本段仅教师版含） · 基础关（单项选择，第1–12题）：每小题1分，共12分。 · 进阶关（语法填空，第1–12题）：每空1分，共12分。 · 句型转换（第1–4、7、11题）：每空1分，按空给分；拼写或语法错误该空不得分。 · 翻译（第5、6题）：每题3分——情态动词选用正确1分；谓语结构（如 have + 过去分词）正确1分；句意完整、表达无误1分。 · 改错（第8、9、12题）：找对错误1分，改正正确1分。 · 语篇填空（第10题）：每空1分，共8分；答案处标注的可接受备选均给满分。 【答题技巧总结】情态动词推测题解题三步法： 第一步：读语境，找证据。看看句子中有没有给出明确的线索（如时间状语、反证、直接观察等）。 第二步：判断语气。证据充分且肯定 → must；证据充分且否定 → can't；证据不足、不确定 → may/might/could。 第三步：确定时态。对现在/将来 → 情态动词 + 动词原形；对正在进行 → 情态动词 + be + doing；对过去 → 情态动词 + have + 过去分词。 【中考链接】该考点中考常见考法： · 近年多地中考单选题出现 must / can't 的辨析，常以对话形式呈现证据链。 · 完形填空中常考查 might have done 表示对过去的不确定推测。 · 语法填空中也考查 can't have done 结构，语境如'有不在场证明'。 · 高频陷阱：mustn't 表禁止（学生常误用作否定推测）；can 在肯定句中不表推测。 【答案速查表】 基础关（单项选择）1-5: C A D B C 6-10: A D B C A 11-12: B A 进阶关（语法填空）1 must 2 can't 3 may 4 must 5 might 6 could 7 can't 8 must 9 can't 10 might 11 might not 12 can't be 冲刺关 1 must be 2 can't be 3 must have spent 4 may/might/could be 5 This ancient jade bi can't be an everyday object 6 might have found 7 may/might/could have known 8 mustn't→can't 9 can→must 10 语篇见解析 11 Can; be 12 删去 be 关卡 题1 题2 题3 题4 题5 题6 题7 题8 题9 题10 题11 题12 基础关 C A D B C A D B C A B A 进阶关 must can't may must might could can't must can't might might not can't be 冲刺关 must be can't be must have spent may be / might be / could be This ancient jade bi can't be an everyday object might have found may/might/could have known mustn't → can't can → must (1) must（唯一） (2) may/might/could 均可 (3) could/can 均可 (4) might/may/could 均可 (5) could/may/might 均可 (6) can't（唯一） (7) could/may/might 均可 (8) can't（唯一） Can; be be → 删去 教辅资料教研组・2026 学科网（北京）股份有限公司 $ 人教版九年级下册英语·语法专题突破卷 Unit 2 情态动词表推测 专题2 情态动词表推测 （对应 Unit 2 A Look into the Past） 【学生版】 一、语法地图 【对应单元】人教版2024 · 九年级下册 · Unit 2 A Look into the Past 【中考考法】单项选择、完形填空、短文填空中考查根据语境判断推测语气强弱（must/may/might/could/can't），以及对过去推测的情态动词 + have done 结构。分值约2~4分。 【卷面总分】本卷满分 54 分。 推测语气强弱 结构形式 must（一定）肯定推测，证据充分 must + do/be may / might / could（可能/也许）不确定 may/might/could + do/be can't（不可能）否定推测，证据充分 can't + do/be 对正在进行的推测 情态动词 + be + doing 对过去/已完成的推测 情态动词 + have + done 二、语法要点精讲 结构 用法 例句 中考注意 must + do/be 有把握的肯定推测（只用于肯定句） The bronze mask must belong to ancient Shu people. 这个青铜面具一定属于古蜀人。 [★常考] 否定推测不用 mustn't，而用 can't may/might/could + do/be 把握不大的可能性推测 That small jade piece might be a kid's toy long ago. 那件小玉件或许是古时候小孩的玩具。 might / could 语气比 may 更弱、更不确定 can't + do/be 有把握的否定推测 This modern coin can't be from the Tang Dynasty. 这枚现代硬币不可能出自唐代。 [⚠️易错] mustn't 表'禁止'，不表推测 情态动词 + be + doing 对正在发生的事情进行推测 She must be doing her homework at home now. 现在她一定正在家里做作业。 情态动词 + have + done 对过去或已完成事件的推测 The ground is wet. It must have rained last night. 地面是湿的，昨晚一定下雨了。 [★常考] 本单元阅读高频考点 三、易错点警示 【警示1】mustn't ≠ can't：否定推测的大坑 我带的班常错在把 mustn't 当成 must 的否定推测。记住：mustn't 意思是'禁止、不准'，如 Visitors mustn't use flash when taking photos in the exhibition hall.（参观者严禁在展厅拍照时使用闪光灯。）而否定推测必须用 can't，如 He can't be at home.（他不可能在家。） 【警示2】might / could 不是过去式 学生看到 might 就以为是 may 的过去式，看到 could 就以为是 can 的过去式。在表推测时，它们只是语气更弱、更不确定，不表示过去时间。例：It might rain this afternoon.（今天下午也许会下雨。）说的是将来！ 【警示3】can 表推测时的句式限制 can 表'可能'时只用于否定句和疑问句，肯定句中表推测要用 may/might/could。比较：Can it be true?（这可能是真的吗？）/ It may be true.（这可能是真的。）/ It can't be true.（这不可能是真的。） 【警示4】have done 前千万别加 be 学生写对过去推测时，常画蛇添足写成 must be have done。正确的结构是：情态动词 + have + 过去分词，中间没有 be。例：He must have known the truth.（他一定已经知道了真相。） 【警示5】对现在的推测用动词原形，不是进行时 除非有明确证据表明动作正在进行，否则对现在的推测用情态动词 + 动词原形即可。别看到 now 就加 be doing。例：He must be tired now.（他现在一定累了。）不是 must be being tired。 但注意：如果语境给出了动作正在进行的直接证据（如 I can hear the pages turning），就要用 must / can't + be + doing 对正在进行的动作进行推测，如 He must be reading in the study.（能听到翻页声，他一定正在书房看书。） 四、分层练习 基础关 ★ 单项选择（共12题） 【答题技巧】时态题三步：找时间状语 → 辨标志词 → 定时态。做情态动词推测题同样三步：读语境找证据 → 判断肯定/否定/不确定 → 选对应情态动词。 1. —Look at that ancient gold stick! It ______ be valuable. —I agree. It ______ be cheap. A. may; mustn't B. must; mustn't C. must; can't D. can; can't 2. The plastic bottle ______ an ancient artifact from the Han Dynasty. A. can't be B. must be C. may be D. might be 3. —Who is the man digging beside the Terracotta Army? —He ______ an archaeologist. No other workers wear that uniform. A. can't be B. might be C. could be D. must be 4. You ______ touch the unearthed relics. It is strictly forbidden. A. can't B. mustn't C. may not D. might not 5. The broken pot ______ hold wine or water; we have no clear proof. A. must B. can't C. may D. mustn't 6. —Is Jimmy in the classroom? —No, he ______ be there. I saw him playing basketball on the playground just now. A. can't B. mustn't C. might not D. may not 7. The foreign beads found in Sichuan ______ have come along ancient trade routes thousands of years ago. A. mustn't B. can't C. can D. might 8. A: The archaeologist's hands are covered in soil. B: He ______ work at a dig site. A. might B. must C. can't D. could 9. This new metal tool ______ belong to ancient people 2,000 years ago. Metal tools like this didn't exist then. A. must B. might C. can't D. could 10. —Where are you going this summer vacation? —I ______ go to Xi'an to see the Terracotta Army, but I'm not sure yet. A. might B. must C. should D. can 11. The scientist says the golden mask ______ have been made by machines, because there were no machines in ancient times. A. must B. can’t C. might D. could 12. —Where is Dad? —He ______ reading the newspaper in the study. I can hear the pages turning. A. must be B. can be C. must have D. may have 进阶关 ★★ 语法填空（共12题） 【答题技巧】先判断句子是肯定推测、否定推测还是不确定推测，再看是对现在、过去还是正在进行的推测，最后确定动词形式。 1. 从括号内选择正确的情态动词填空。 The well-preserved bronze tree ______ (must / can't) be a treasure of Sanxingdui. It was unearthed right there. 2. The souvenir sword sold at the gift shop ______ (can't / might) be a real ancient weapon. It was made last year. 3. The experts guess the gold mask ______ (may / can't) have been used for religious ceremonies in ancient Shu. 4. Look at the soldier's uniform in the Terracotta Army. He ______ (must / could) be a royal guard. 5. The broken pottery ______ (might / must) date back to the Shang Dynasty; we need more tests to be sure. 6. That tiny jade carving ______ (could / can't) weigh less than 10 grams. It looks so small and light. 7. The person buried here ______ (can't / may) be poor—there are lots of gold objects in the tomb. 8. The ancient stone bridge ______ (must / might) have taken a long time to build. Every stone was cut and fitted by hand. 9. These ancient coins ______ (can't / could) be from China. The words on them are in a foreign language. 10. Some people guess the underground palace ______ (can / might) have been built for an ancient king. No written records mention it. 11. The bronze mirror ______ (might not / can’t) have been made in that workshop, because the ancient masters left no record of it. 12. The workers ______ (must be / can’t be) repairing the ancient bridge now, because the work site is completely silent. 冲刺关 ★★★ 句型转换·翻译·语篇应用（共12题） 【答题技巧】句型转换题先抓关键词（must / can't / might 等），再确定时态结构（do/be / be doing / have done）。语篇题要前后文联系，注意证据链。 1. 按要求完成下列各题，每空一词。 The light is on. Jason is at home.（合并为含 must 的推测句） The light is on. Jason ______ ______ at home. 2. Mr. White is not in his office. I saw him walking to the meeting room just now.（合并为含 can't 的推测句） Mr. White ______ ______ in his office. I saw him walking to the meeting room just now. 3. The workers spent many years building the Terracotta Army.（改为含 must 的推测句） The workers ______ ______ ______ many years building the Terracotta Army. 4. 将下列句子改为同义句。 Perhaps this ancient map is wrong. This ancient map ______ ______ wrong. 5. 翻译句子。 这件古代玉璧不可能是日常用品，它的做工太精美了。 _____________________________________________. Its workmanship is so fine. 6. 翻译句子。 考古学家们也许在其他地方发现过类似的文物。 The archaeologists ______ ______ ______ similar artifacts in other places. 7. 句型转换。 It is possible that the ancient people knew advanced metal-making skills.（用情态动词改写） The ancient people ______ ______ ______ advanced metal-making skills. 8. 改错：找出句中的一处错误并改正。 The clay figure mustn't be a soldier. It wears a general's uniform. 错误：______ 改正：______ 9. 改错：找出句中的一处错误并改正。 He can be at home now. His schoolbag is still here and I can hear him talking upstairs. 错误：______ 改正：______ 10. 【语篇应用】阅读短文，用适当的情态动词（must / may / might / could / can't）填空，每空一词。 The Mystery of the Ancient Horn Archaeologists found an object with a curved shape in an ancient tomb. It looks like an animal horn. Dr. Li said, 'It (1)______ be a horn of some kind. The curved shape is very typical.' However, some researchers disagree. 'We found new evidence that questions the old idea,' said Dr. Wang. 'So the old idea (2)______ be wrong. We need more evidence to be sure.' Near the tomb, some gray powder was discovered. 'What (3)______ it be?' asked a young archaeologist. Dr. Li guessed, 'It (4)______ be ash, but I'm not sure — it (5)______ also be dust or something else.' In the special exhibition hall, they found beautiful silk clothing from the Han Dynasty. 'It's so thin and light. It (6)______ be very heavy. Maybe it weighs only a few hundred grams,' said Dr. Wang. Looking at the famous mystery of King Tut's death, Dr. Li said, 'There are many theories. It (7)______ be an illness. Ancient records say he was often sick. But we (8)______ be certain without more proof.' 11. 根据汉语提示完成句子，每空一词。 那会是真的吗？（can） ______ it ______ true? 12. 改错：找出句中的一处错误并改正。 He must be have visited the museum last week. 错误：______ 改正：______ 教辅资料教研组・2026 学科网（北京）股份有限公司 $