中考英语情态动词语法专项进阶练习（含解析）

中考英语情态动词语法专项进阶练习（100 题）
考点一、情态动词表推测
（一）单项选择（15 题）
—Where is Tom I can’t find him anywhere.—He ______ be in the library. He told me he wanted to borrow some books this morning.
A. must B. can C. may not D. can’t
—Is that Lucy’s schoolbag —It ______ be hers. Her name is written on the zipper.
A. might B. must C. can’t D. could
The light in his room is off. He ______ be at home. He might be out with his friends.
A. must B. should C. can’t D. may
—Could the new student be from Canada —She ______ be, but I’m not sure. She speaks both English and French.
A. must B. can’t C. may D. should
You ______ be tired after walking for three hours without a rest. Let’s sit down and have a drink.
A. must B. can C. might not D. can’t
—Who broke the window of the classroom —It ______ be Mike. He was the only one who stayed in the classroom after class.
A. could B. must C. may D. can’t
The ground is dry. It ______ have rained last night.
A. must B. can C. can’t D. might
—Is Mr. Wang in the office —He ______ be there. I saw him leave for the airport ten minutes ago.
A. must B. can’t C. may D. should
She ______ know the answer to the question, but she is too shy to speak up. Let’s ask her.
A. must B. can’t C. may D. should
—Could this red coat belong to Mary —No, it ______ be hers. She hates red.
A. must B. can’t C. may D. could
They ______ have arrived at the station by now, because the train left an hour ago.
A. must B. can’t C. may not D. should
—Why isn’t Lisa here —She ______ be stuck in traffi C. The road is always busy at this time.
A. must B. can’t C. may D. should
This book ______ be Jim’s. His favorite author wrote it, but I’m not sure if he bought it.
A. must B. may C. can’t D. should
He ______ be a doctor. He wears a white coat, but he might also be a nurse.
A. must B. can C. may D. can’t
—The door is locke D. Who could have locked it —It ______ be my mom. She always locks the door before going out.
A. must B. can’t C. may D. should
（二）用所给情态动词的适当形式填空（5 题）
You ______ (must) not be late for the exam tomorrow. The teacher will check attendance strictly.
The baby is crying. She ______ (may) be hungry. Let’s feed her some milk.
He ______ (can) not have finished his homework yet. He started it only ten minutes ago.
—Where did you put my phone —I’m not sure. It ______ (might) be on the kitchen table.
The road is covered with snow. Drivers ______ (must) drive carefully to avoid accidents.
（三）改错（5 题，找出错误并改正）
He must to be at home now, because his bike is still in the yard.
That can’t is our new teacher. She said she would wear a blue dress today.
She may be not happy with the result. Let’s go and comfort her.
They must have take the wrong bus, so they haven’t arrived yet.
Could he be forget his keys He can’t get into his house.
二、情态动词表能力
（一）单项选择（8 题）
—______ you play the guitar when you were 10 —Yes, I coul D. But now I’m too busy to practice.
A. Can B. Could C. Must D. Should
She ______ speak three languages fluently now—English, French and Chinese.
A. can B. could C. must D. may
He ______ swim across the river last summer, but he ______ not do it now because he hurt his leg.
A. can; can B. could; can C. can; could D. could; could
By the time she was 18, she ______ able to play the piano very well. She had learned it for 10 years.
A. is B. was C. will be D. has been
We ______ finish the project on time if we work together. I believe we have the ability.
A. can B. must C. may D. should
He ______ not climb the mountain yesterday because the weather was too bad.
A. can B. could C. must D. should
—______ you be able to join us for the picnic next Sunday —I’m not sure. I might have to visit my grandparents.
A. Can B. Could C. Will D. Must
She ______ (be) able to solve this math problem since she learned the new method last week.
A. is B. was C. has been D. will be
（二）用所给词的适当形式填空（5 题）
My grandfather ______ (can) run very fast when he was young, but now he can’t even walk quickly.
They ______ (be) able to finish the work by Friday if they don’t waste time.
—______ (can) you speak Japanese —No, but I ______ (learn) it next year, so I ______ (be) able to speak it soon.
He ______ (could) not ride a bike last month, but now he ______ (can) ride very well.
We ______ (be) able to see the stars clearly tonight because the sky is very clear.
（三）句型转换（2 题）
Tom can play the drums well.（改为一般疑问句）______ Tom ______ the drums well
She has been able to drive a car since 2020.（对划线部分提问）______ ______ she been able to drive a car
三、情态动词表义务 / 必要
（一）单项选择（10 题）
—Must I hand in my homework this afternoon —No, you ______. You can hand it in tomorrow morning.
A. mustn’t B. needn’t C. can’t D. shouldn’t
We ______ follow the traffic rules when we cross the roa D. It’s important for our safety.
A. can B. may C. must D. could
He ______ stay at home yesterday because he was ill. He couldn’t go to school.
A. had to B. must C. can D. should
You ______ be quiet in the library. Everyone is reading.
A. can B. must C. may D. could
—______ I clean the classroom now —No, you ______. You can do it after class.
A. Must; needn’t B. Can; mustn’t C. Should; can’t D. May; needn’t
They ______ finish the report today because the manager needs it tomorrow.
A. can B. must C. may D. could
You ______ not smoke in public places. It’s against the law.
A. must B. can C. may D. should
She ______ take care of her little sister this evening because her parents are going out.
A. has to B. must C. can D. may
—Should we call the police now —Yes, we ______. The situation is very dangerous.
A. can B. must C. may D. could
We ______ not waste water. Water is very important for us.
A. must B. can C. may D. could
（二）用所给词的适当形式填空（6 题）
You ______ (should) listen to your parents’ advice. They have more experience.
He ______ (have to) go to the doctor yesterday because he had a high fever.
We ______ (must) not talk loudly in the hospital. Patients need to rest.
—______ (must) I return the book to the library today —No, you ______ (need) not. You can keep it for another week.
They ______ (should) not play computer games too much. It’s bad for their eyes.
She ______ (have to) get up early every morning to catch the first bus to work.
（三）改错（4 题）
You mustn’t to forget to turn off the lights when you leave the room.
He has to staying at home tonight to look after his sick mother.
We should to help each other when we are in trouble
—Must I finish the work now —No, you mustn’t. You can finish it tomorrow.
四、情态动词表许可 / 请求
（一）单项选择（8 题）
—______ I use your pen Mine is broken.—Sure, here you are.
A. Must B. Should C. Can D. Need
—______ we go to the park this afternoon —Good idea! I want to fly a kite there.
A. Shall B. Will C. Must D. Should
—Could you please pass me the salt —______. Here you are.
A. No, I can’t B. Yes, I could C. Sure D. No, thanks
—May I go out to play with my friends after dinner —No, you ______. You have to finish your homework first.
A. mustn’t B. needn’t C. can’t D. shouldn’t
—Would you like ______ to the movies with me tonight —Yes, I’d love to.
A. go B. to go C. going D. gone
—______ you help me carry this heavy box —Of course. Let’s do it together.
A. Must B. Should C. Can D. Need
—May I borrow your dictionary —Yes, you ______. But you must return it tomorrow.
A. can B. may C. must D. should
—Would you mind opening the window It’s too hot in the room.—______. I’ll open it right away.
A. Yes, I mind B. No, I don’t mind C. You’re welcome D. That’s all right
（二）用所给词的适当形式填空（5 题）
______ (shall) we have dinner at that new restaurant tonight I heard the food there is delicious.
Would you like ______ (drink) a cup of tea It’s good for your health.
—Could you ______ (help) me with my English homework —Yes, I can. Let’s start now.
May I ______ (use) your phone to call my parents My phone is dead.
He would like his sister ______ (go) to the concert with him this weekend.
对话补全（2 题，从方框中选择合适的选项填空）
A. Can you B. Could you please C. May I D. Would you like
—______ pass me the notebook on the desk —Sure, here it is.
—______ to go shopping with me this Saturday —Yes, I’d love to.
五、情态动词易混点辨析
（一）单项选择（12 题）
—______ he is late for class. What’s wrong with him —He ______ be caught in the traffic jam.
A. Maybe; may B. May be; can C. Maybe; must D. May be; might
You ______ be quiet in the library, but you ______ not smoke here. Smoking is not allowed at all.
A. can; must B. must; must C. should; must D. may; can
—______ I finish the work today —No, you ______. But you ______ finish it by Friday.
A. Must; needn’t; must B. Can; can’t; should C. Should; needn’t; may D. May; mustn’t; can
He ______ swim when he was 5, but yesterday he ______ swim across the river because the water was too deep.
A. could; can’t B. can; couldn’t C. could; couldn’t D. can; can’t
—Is that girl in red our new classmate —It ______ be her. She said she would wear a red dress today. But I’m not sure.
A. must B. may C. can’t D. should
You ______ tell him the truth. It’s important for him to know it, but you ______ not tell him right now. You can wait until he is calm.
A. must; need B. should; must C. may; can D. must; may
—______ you speak louder I can’t hear you clearly.—Sorry, I’ll speak louder.
A. Can B. Must C. Should D. Need
He ______ be at home. His car is in the garage, but his wife said he went out ten minutes ago.
A. must B. may C. can’t D. should
—______ we go hiking tomorrow —It depends on the weather. If it rains, we ______ stay at home.
A. Shall; must B. Will; can C. May; should D. Can; need
You ______ not play with fire. It’s very dangerous. You ______ get hurt.
A. must; may B. can; must C. should; can D. may; must
—Must I clean the room now —No, you ______. You ______ clean it after breakfast.
A. mustn’t; can B. needn’t; can C. can’t; should D. needn’t; must
She ______ be very tire D. She has been working for 12 hours, but she ______ not stop working yet because there is still a lot to do.
A. must; can B. may; must C. should; can D. can; may
（二）改错（5 题）
Maybe he may be our new teacher. He looks like the photo the headmaster showed us.
He can’t be late for class, but he was. He must get up late this morning.
You must to finish your homework first, and then you can watch TV.
She may be not at home. Let’s call her again later.
Could you please to open the door It’s cold outside.
（三）选择填空（3 题，从括号中选择合适的词填空）
______ (Maybe/May be) she will come to the party tonight. I’m not sure.
You ______ (must/have to) wear a seatbelt when you drive. It’s a traffic rule.
He ______ (can/could) play the piano very well now, but he ______ (couldn’t/can’t) play it at all two years ago.
六、情态动词综合运用
—______ you tell me how to get to the nearest bank —Sure. Go straight and turn left at the first crossing. You ______ see it on your right.
A. Can; must B. Could; will C. May; can D. Must; should
She ______ (be) able to sing very well when she was young, but now she ______ (not sing) often because she is too busy. She ______ (sing) at the school party next month if she has time.
A. was; doesn’t sing; will sing B. is; didn’t sing; sings
C. could; won’t sing; may sing D.can; doesn’t sing; must sing
—Must I return the magazine to you this week —No, you ______. You ______ keep it for two weeks. But you ______ not lend it to others.
A. needn’t; can; must B. can’t; may; should
C. mustn’t; should; can D. needn’t; must; may
—______ we go to the cinema to watch the new movie this evening —I’m afraid I ______ not. I ______ finish my homework first. My parents are strict with me.
A. Shall; can; must B. Will; may; should
C. Can; must; need D. May; can; have to
He ______ (must) have forgotten to take his umbrella.It’s raining heavily outside, but he ______ (not have) to wait for the rain to stop. He can call his friend to pick him up.
A. must; doesn’t have B. may; has
C. can; didn’t have D. should; won’t have
答案解析
情态动词表推测
（一）单项选择（15 题）
答案：A解析：考查 must 表肯定推测。根据 “He told me he wanted to borrow some books this morning”（他早上说要去借书），有明确线索证明他可能在图书馆，用 must 表 “一定”，符合 “must 用于肯定句表有根据的肯定推测” 考点。
答案：B解析：考查 must 表肯定推测。根据 “Her name is written on the zipper”（拉链上有她的名字），证据确凿，用 must 表 “肯定是”，符合推测的 “强肯定” 用法。
答案：C解析：考查 can’t 表否定推测。根据 “The light in his room is off”（房间灯关着），可知他不在家，用 can’t 表 “不可能”，符合 “can 用于否定句表有根据的否定推测” 考点。
答案：C解析：考查 may 表不确定推测。根据 “but I’m not sure”（但我不确定），用 may 表 “可能”，符合 “may 用于肯定句表无根据的不确定推测” 考点。
答案：A解析：考查 must 表肯定推测。根据 “after walking for three hours without a rest”（走了三小时没休息），常理推断肯定累了，用 must 表 “一定”。
答案：B解析：考查 must 表肯定推测。根据 “He was the only one who stayed in the classroom after class”（他是课后唯一留在教室的人），证据明确，用 must 表 “肯定是”。
答案：C解析：考查 can’t 表否定推测。根据 “The ground is dry”（地面是干的），可知昨晚没下雨，用 can’t have done 表 “过去不可能做某事”，符合过去时态的推测用法。
答案：B解析：考查 can’t 表否定推测。根据 “I saw him leave for the airport ten minutes ago”（十分钟前见他去机场了），可知他不在办公室，用 can’t 表 “不可能”。
答案：C解析：考查 may 表不确定推测。根据 “but she is too shy to speak up”（但她太害羞不敢说），不确定她是否知道答案，用 may 表 “可能”。
答案：B解析：考查 can’t 表否定推测。根据 “She hates red”（她讨厌红色），可知红外套不可能是她的，用 can’t 表 “不可能”。
答案：A解析：考查 must have done 表过去肯定推测。根据 “by now”（到现在为止）和 “the train left an hour ago”（火车一小时前开了），推断他们肯定到车站了，用 must have arrived。
答案：C解析：考查 may 表不确定推测。根据 “The road is always busy at this time”（这段路这时总堵车），不确定她是否堵车，用 may 表 “可能”。
答案：B解析：考查 may 表不确定推测。根据 “His favorite author wrote it, but I’m not sure”（是他喜欢的作者写的，但不确定他买了），用 may 表 “可能”。
答案：C解析：考查 may 表不确定推测。根据 “but he might also be a nurse”（但也可能是护士），不确定他是医生，用 may 表 “可能”。
答案：A解析：考查 must 表肯定推测。根据 “She always locks the door before going out”（她出门前总锁门），证据明确，用 must 表 “肯定是”。
（二）用所给情态动词的适当形式填空（5 题）
答案：must解析：考查 must 表义务，“must not” 表 “禁止”，此处指 “禁止考试迟到”，符合义务类用法。
答案：may解析：考查 may 表推测，根据 “The baby is crying”（宝宝在哭），不确定是否饿了，用 may 表 “可能”。
答案：can解析：考查 can’t have done 表过去否定推测，根据 “started it only ten minutes ago”（十分钟前才开始），可知不可能完成，用 can’t have finished。
答案：might解析：考查 might 表推测，“I’m not sure”（不确定），用 might 表 “可能”，语气比 may 更弱。
答案：must解析：考查 must 表义务，根据 “The road is covered with snow”（路被雪覆盖），必须小心开车，用 must 表 “必须”。
（三）改错（5 题）
错误：must to be → 改正：must be解析：情态动词后接动词原形，must 后不加 to。
错误：can’t is → 改正：can’t be解析：情态动词后接动词原形，can’t 后接 be 动词原形 be。
错误：may be not → 改正：may not be解析：情态动词的否定式，not 应放在情态动词后，实义动词前，即 may not be。
错误：must have take → 改正：must have taken解析：must have done 表过去推测，have 后接过去分词，take 的过去分词是 taken。
错误：be forget → 改正：have forgotten解析：表 “可能忘记”，用 could have forgotten（过去可能做某事），情态动词后接 have done，而非 be forget。
二、情态动词表能力
（一）单项选择（8 题）
答案：B解析：考查 could 表过去能力。根据 “when you were 10”（你 10 岁时），用 could 表过去的能力，符合 “can 表现在能力，could 表过去能力” 考点。
答案：A解析：考查 can 表现在能力。根据 “now”（现在），用 can 表现在能说三种语言，符合现在能力的用法。
答案：B解析：考查 could 表过去能力和 can 表现在能力。第一空 “last summer”（去年夏天）用 could；第二空 “now”（现在）用 can not，故选 B。
答案：B解析：考查 be able to 表过去能力。根据 “By the time she was 18”（到她 18 岁时），用 was able to 表过去的能力，符合 be able to 的时态变化（过去时用 was/were able to）。
答案：A解析：考查 can 表能力。根据 “if we work together. I believe we have the ability”（如果一起努力，我们有能力），用 can 表 “能做到”，符合能力类用法。
答案：B解析：考查 could not 表过去能力不足。根据 “yesterday”（昨天）和 “the weather was too bad”（天气太糟），用 could not 表过去不能爬山，符合过去能力的否定。
答案：C解析：考查 will be able to 表将来能力。根据 “next Sunday”（下周日），用 will be able to 表将来是否能参加，符合 be able to 的将来时用法。
答案：C解析：考查 have been able to 表现在完成时的能力。根据 “since she learned the new method last week”（自从上周学了新方法），用现在完成时 has been able to，符合 be able to 的时态变化。
（二）用所给词的适当形式填空（5 题）
答案：could解析：考查 could 表过去能力。根据 “when he was young”（他年轻时），用 could 表过去能跑得快，符合过去能力的用法。
答案：will be解析：考查 will be able to 表将来能力。根据 “by Friday”（到周五），用 will be able to表将来能完成工作，符合将来时用法。
答案：Can; will learn; will be解析：第一空 “现在能说日语吗” 用 Can；第二空 “明年学” 用 will learn；第三空 “很快能说” 用 will be able to，符合时态和能力的结合。
答案：could; can解析：第一空 “last month”（上个月）用 could not 表过去不能骑车；第二空 “now（现在）用 can 表现在能骑，符合过去和现在能力的对比。
答案：will be解析：考查 will be able to 表将来能力。根据 “tonight”（今晚），用 will be able to 表今晚能看清星星，符合将来时用法。
（三）句型转换（2 题）
答案：Can; play解析：含有 can 的陈述句变一般疑问句，将 can 提前，动词原形 play 不变。
答案：Since when has解析：对 “since 2020”（自从 2020 年）提问，用 “Since when”，现在完成时的疑问句将 has 提前，主语是 she，故为 Since when has。
三、情态动词表义务 / 必要
（一）单项选择（10 题）
答案：B解析：考查 must 的否定回答。Must 引导的一般疑问句，否定回答用 needn’t（不必），而非 mustn’t（禁止），符合 “must 表义务，否定回答用 needn’t” 考点。
答案：C解析：考查 must 表义务。根据 “follow the traffic rules”（遵守交通规则）和 “for our safety”（为了安全），用 must 表 “必须”，符合义务类用法。
答案：A解析：考查 have to 表客观必要。根据 “because he was ill”（因为生病），客观原因导致必须待在家，用 had to（过去时），符合 “have to 表客观必要，有过去时态” 考点。
答案：B解析：考查 must 表义务。根据 “Everyone is reading”（大家都在看书），图书馆必须安静，用 must 表 “必须”。
答案：A解析：第一空 “Must I... ” 表 “我必须现在打扫吗”；第二空否定回答用 needn’t（不必），符合 must 的否定回答用法。
答案：B解析：考查 must 表必要。根据 “the manager needs it tomorrow”（经理明天要），必须今天完成报告，用 must 表 “必须”。
答案：A解析：考查 must not 表禁止。根据 “It’s against the law”（违法），禁止在公共场所吸烟，用 must not 表 “禁止”。
答案：A解析：考查 have to 表客观必要。根据 “because her parents are going out”（父母要出去），客观原因导致必须照顾妹妹，用 has to（第三人称单数）。
答案：B解析：考查 must 表必要。根据 “The situation is very dangerous”（情况危险），必须报警，用 must 表 “必须”。
答案：A解析：考查 must not 表义务性禁止。根据 “Water is very important”（水很重要），必须不浪费水，用 must not 表 “禁止”。
（二）用所给词的适当形式填空（6 题）
答案：should解析：考查 should 表建议。“listen to your parents’ advice”（听父母建议）是建议，用 should 表 “应该”。
答案：had to解析：考查 have to 的过去时。根据 “yesterday”（昨天），用 had to 表过去客观必要（必须去看医生）。
答案：must解析：考查 must not 表禁止。“talk loudly in the hospital”（在医院大声说话）是禁止的，用 must not。
答案：Must; need解析：第一空 “Must I... ” 表 “我必须今天还书吗”；第二空否定回答用 need not（不必），符合 must 的否定回答用法。
答案：should解析：考查 should not 表建议性否定。“play computer games too much”（玩太多游戏）是不应该的，用 should not。
答案：has to解析：考查 have to 表客观必要。根据 “every morning”（每天早上），客观原因（赶公交）导致必须早起，主语是 she，用 has to。
（三）改错（4 题）
错误：mustn’t to forget → 改正：mustn’t forget解析：情态动词后接动词原形，mustn’t 后不加 to。
错误：has to staying → 改正：has to stay解析：have to 后接动词原形，staying 应改为 stay。
错误：should to help → 改正：should help解析：情态动词后接动词原形，should 后不加 to。
错误：mustn’t → 改正：needn’t解析：Must 引导的一般疑问句，否定回答用 needn’t（不必），而非 mustn’t（禁止），此处表 “不必现在完成”，故改 needn’t。
情态动词表许可 / 请求
（一）单项选择（8 题）
答案：C解析：考查 can 表请求许可。“I use your pen ”（我能用你的笔吗），用 can 表请求，语气委婉，符合请求类用法。
答案：A解析：考查 shall 表征求意见。“Shall we... ” 用于第一人称疑问句，表 “我们…… 好吗”，征求对方意见，符合 “shall 用于一三人称疑问句表征求意见” 考点。
答案：C解析：考查 Could you please... 的回答。“Could you please pass me the salt ”（能把盐递给我吗），肯定回答用 Sure/Of course，符合请求的礼貌回答。
答案：A解析：考查 may 的否定回答。May 引导的请求许可，否定回答用 mustn’t（禁止），此处表 “禁止出去，必须先写作业”，符合 “may 表许可，否定用 mustn’t” 考点。
答案：B解析：考查 would like to do sth。“Would you like to do...” 是固定搭配，表 “想要做某事”，故用 to go。
答案：C解析：考查 can 表请求帮助。“Can you help me... ”（你能帮我…… 吗），用 can 表请求，语气自然，符合请求类用法。
答案：B解析：考查 may 的肯定回答。May 引导的请求许可，肯定回答用 may（或 can），此处保持语气一致，用 may。
答案：B解析：考查 Would you mind... 的回答。“Would you mind opening the window ”（介意开窗吗），否定回答用 “No, I don’t mind”（不介意），符合礼貌回答。
（二）用所给词的适当形式填空（5 题）
答案：Shall解析：考查 shall 表征求意见。“Shall we... ” 用于第一人称疑问句，表 “我们今晚去新餐厅吃饭好吗”，征求对方意见。
答案：to drink解析：考查 would like to do sth。“Would you like to drink...” 是固定搭配，表 “想要喝杯茶吗”。
答案：help解析：考查 Could you do sth。“Could you help me... ” 是固定搭配，could 后接动词原形 help。
答案：use解析：考查 may 表请求许可。May 后接动词原形，“May I use your phone... ”（我能用你手机打电话吗）。
答案：to go解析：考查 would like sb to do sth。“would like sb to do...” 是固定搭配，表 “想要某人做某事”，故用 to go。
（三）对话补全（2 题）
答案：B. Could you please解析：“Could you please pass me...”（能请你递给我…… 吗），语气委婉，符合请求场景。
答案：D. Would you like解析：“Would you like to go shopping... ”（你想要和我去购物吗），固定搭配，符合邀请场景。
五、情态动词易混点辨析
（一）单项选择（12 题）
答案：A解析：考查 maybe 和 may 的区别。maybe 是副词，放句首，表 “也许”；may 是情态动词，后接动词原形，“may be” 表 “可能是”，故第一空用 Maybe，第二空用 may。
答案：C解析：考查 should 表建议和 must not 表禁止。第一空 “在图书馆应该安静” 用 should；第二空 “禁止吸烟” 用 must not，符合 “should 表建议，must not 表禁止” 考点。
答案：A解析：第一空 “Must I finish today ”（必须今天完成吗）；第二空否定回答用 needn’t（不必）；第三空 “但必须周五前完成” 用 must，符合 “must 表义务，否定用 needn’t” 考点。
答案：C解析：考查 could 表过去能力和 couldn’t 表过去能力不足。第一空 “when he was 5”（5 岁时）用 could；第二空 “yesterday”（昨天）和 “water was too deep”（水太深）用 couldn’t，符合过去能力的对比。
答案：B解析：考查 may 表不确定推测。根据 “but I’m not sure”（但不确定），用 may 表 “可能是”，区别于 must（肯定）和 can’t（不可能）。
答案：D解析：第一空 “必须告诉他真相” 用 must（表必要）；第二空 “但不必现在说” 用 may not（表 “可以不”），符合 “must 表必要，may not 表许可性否定” 考点。
答案：A解析：考查 can 表请求。“Can you speak louder ”（你能大点声吗），用 can 表请求，区别于 must（必须）、should（应该），符合请求场景。
答案：B解析：考查 may 表不确定推测。根据 “His car is in the garage, but his wife said he went out”（车在车库，但妻子说他出去了），矛盾线索导致不确定，用 may 表 “可能”。
答案：A解析：第一空 “Shall we go hiking ”（我们明天去徒步好吗）用 shall 表征求意见；第二空 “如果下雨，必须待在家” 用 must 表必要，符合场景。
答案：A解析：第一空 “禁止玩火” 用 must not；第二空 “可能受伤” 用 may 表推测，符合 “must not 表禁止，may 表不确定推测” 考点。
答案：B解析：第一空 Must 的否定回答用 needn’t（不必）；第二空 “可以早饭后打扫” 用 can 表许可，符合 “must 否定用 needn’t，can 表许可” 考点。
答案：A解析：第一空 “工作 12 小时，一定累了” 用 must 表肯定推测；第二空 “但不能停止，因为还有很多事” 用 can not 表能力不足，符合推测和能力的结合。
（二）改错（5 题）
错误：Maybe he may be → 改正：Maybe he is 或 He may be解析：maybe（副词）和 may be（情态动词 + be）不能同时使用，二者选其一。
错误：must get up → 改正：must have got up解析：表 “肯定起晚了”（过去的动作），用 must have done，故改为 must have got up。
错误：must to finish → 改正：must finish解析：情态动词后接动词原形，must 后不加 to。
错误：may be not → 改正：may not be解析：情态动词的否定式，not 放情态动词后，即 may not be。
错误：to open → 改正：open解析：“Could you please do sth” 是固定搭配，please 后接动词原形，故去掉 to。
（三）选择填空（3 题）
答案：Maybe解析：maybe 是副词，放句首，表 “也许”；may be 是 “情态动词 + be”，需放句中作谓语，此处句首用 Maybe。
答案：have to解析：“wear a seatbelt”（系安全带）是交通规则，客观要求，用 have to 表客观必要；must 表主观义务，此处更侧重客观规则，故选 have to。
答案：can; couldn’t解析：第一空 “now”（现在）用 can 表现在能力；第二空 “two years ago”（两年前）用 couldn’t 表过去能力不足，符合时态对比。
六、情态动词综合运用
答案：B解析：第一空 “Could you tell me... ”（能告诉我怎么去最近的银行吗）用 could 表请求，语气委婉；第二空 “你会在右边看到它” 用 will 表将来，符合场景。
答案：A解析：第一空 “when she was young”（年轻时能唱得好）用 was able to（过去能力）；第二空 “now”（现在不常唱）用 doesn’t sing（一般现在时否定）；第三空 “next month”（下个月可能唱）用 will sing（将来时），符合时态和能力的结合。
答案：A解析：第一空 Must 的否定回答用 needn’t（不必）；第二空 “能借两周” 用 can 表许可；第三空 “禁止借给别人” 用 must not 表禁止，符合义务、许可和禁止的结合。
答案：A解析：第一空 “Shall we go to the cinema ”（我们今晚去看电影好吗）用 shall 表征求意见；第二空 “恐怕不能去” 用 can not 表能力 / 许可不足；第三空 “必须先完成作业” 用 must 表义务，符合场景。
答案：A解析：第一空 “肯定忘带伞了” 用 must have forgotten（过去肯定推测）；第二空 “不必等雨停” 用 doesn’t have to（一般现在时，表客观不必），符合推测和必要的结合。