新概念第一册Lesson127~128情态动词专项练习（含答案）

情态动词场景对比表 核心场景 对应情态动词 关键用法说明 例句 能力 can 现在/普遍能力，语气直接、口语化 She can speak three languages. could 过去能力；现在能力的委婉表达（比can弱） I could play the piano when I was 5. 许可 can 日常、口语化许可，语气较随意 You can use my phone. may 正式、礼貌的许可，比can更规范 May I enter the meeting room could/might 极委婉的许可（极少用），语气最弱，更偏向“试探” Could I ask one more question 意愿/将来 will 当下直接的意愿；客观将来，无委婉感 I will help you move. / Tomorrow will rain. would 过去的意愿；现在委婉的意愿/请求，比will客气 He said he would call me. / Would you like coffee 义务/建议 must 语气最强，表“必须、强制义务”，不容置疑 You must follow the rules. should 表“建议、理应如此”，语气温和，无强制性 You should get enough sleep. shall 仅第一人称（I/we），表“主动提议”；官方规定的强硬义务（日常少用） Shall we go for dinner / You shall not smoke here. need 表“必要”，情态动词仅用于否定/疑问；实义动词“need to do”表肯定必要 You needn’t hurry. / I need to finish this work. 推测（语气从强到弱） must 90%肯定，表“一定、肯定” He isn’t here—he must be in the office. should 80%“理应如此”，表“按常理应该” The train should arrive on time. can 仅用于否定/疑问，表“不可能/难道” Can it be true / He can’t be at home. could 50%可能，表“有可能”，比may稍弱 It could rain this afternoon. may 40%可能，表“或许、也许” She may come to the party. might 20%极低可能，表“说不定、大概”，语气最弱 We might see a star tonight. 情态动词专项练习题 一、单项选择（选出最恰当的情态动词） 1. — _____ you pass me the salt, please — Sure, here you are. A. Must B. Could C. Need D. Shall 2. He _____ swim very well when he was only 6 years old. A. can B. may C. could D. might 3. You _____ be quiet in the library; it’s a rule for everyone. A. should B. must C. would D. may 4. The road is wet. It _____ have rained last night. A. must B. should C. can D. might 5. — _____ we go to the cinema this weekend — That sounds great! A. Will B. Would C. Shall D. Should 6. You _____ worry about me. I’m old enough to take care of myself. A. needn’t B. mustn’t C. shouldn’t D. can’t 7. — _____ this be your first time visiting Beijing — Yes, it is. Everything here is new to me. A. May B. Must C. Can D. Should 8. If you want to improve your English, you _____ practice speaking every day. A. will B. should C. would D. may 二、用括号内情态动词的适当形式填空 1. My grandma _____ (can) dance beautifully when she was young, but now she _____ (not/can) because of her knee pain. 2. You _____ (must) not park here; there’s a “No Parking” sign over there. 3. — _____ (shall) we order some food online I’m too tired to cook. — Good idea! 4. The door is locked. He _____ (must) be out; he usually goes for a walk at this time. She _____ (should) have told me the truth yesterday, but she kept silent. 情态动词专项练习题答案 一、单项选择 1. B（解析：请求递东西，需委婉语气，could 符合“委婉请求”场景，must 表强制、need 表必要、shall 表提议，均不匹配） ... ...