中考英语语法复习学案(情态动词)

资源下载
  1. 二一教育资源

中考英语语法复习学案(情态动词)

资源简介

中小学教育资源及组卷应用平台
中考英语情态动词学案
一、情态动词的多维本质与语法特征
定义:情态动词是表示说话人情感、态度或推测的一类动词,必须与动词原形连用,没有人称和数的变化(除have to外)。
核心语法特征:
1. 后接原形:情态动词 + do(如can swim, must be)。
2. 否定直接加not:can → can’t, must → mustn’t。
3. 疑问直接提前:May I go → May I go
4. 无人称变化:He can play vs. I can play(can形式不变)。
二、中考八大核心情态动词深度解析
1. Can(能力/请求)
现在能力:I can ride a bike.(强调具备技能)
过去能力(could):She could read at age 4.(过去具备的能力)
请求许可(口语化):Can I borrow your eraser (较随意场合)
否定推测(不可能):That can’t be Lucy—she’s in Japan.(把握性强)
拓展:
Could可表委婉请求(无过去含义):Could you help me (= Can you help me 更礼貌)
2. May(许可/推测)
正式许可:May I leave the classroom (用于师生、上下级等正式场景)
可能性推测(中低概率):It may rain tomorrow.(可能性低于must,高于might)
否定回答:—May I smoke —No, you mustn’t.(禁止用mustn’t,不允许用may not)
拓展:
Might是may的过去式,也可表更委婉的请求或更低的可能性:Might I suggest a plan
3. Must(必须/肯定推测)
主观义务(必须):You must wear a seatbelt.(法律/规则要求)
肯定推测(一定):He must be at home—his car is outside.(把握性接近100%)
否定形式mustn’t(禁止):You mustn’t play with fire.(= Don’t play with fire.)
关键考点:
Must提问的否定回答用needn’t(不必):
—Must I finish the work today —No, you needn’t.(≠ No, you mustn’t.)
4. Have to(客观义务)
无人称/时态变化:
一般现在时:He has to get up early.(三单加has)
一般过去时:I had to walk home yesterday.(过去式had)
与must的对比:
Must强调主观意愿(I must study hard.);
Have to强调客观被迫(I have to pay the bill.)。
否定形式:don’t/doesn’t/didn’t have to(不必):
You don’t have to come early.(= You needn’t come early.)
5. Need(需要)
情态动词(用于否定/疑问):
疑问句:Need he attend the meeting (= Does he need to attend )
否定句:You needn’t bring anything.(= You don’t have to bring anything.)
实义动词(用于肯定句):
He needs to buy a new book.(三单加s,后接to do)
经典辨析:
Need I go (情态动词,直接提问)
Do I need to go (实义动词,借助助动词do)
6. Should(建议/责任)
表建议(应该):You should drink more water.(比must语气弱,表推荐)
表责任/义务:Students should respect teachers.(社会规范要求)
拓展:
Should可用于虚拟语气(If it should rain, we’d stay),表“万一”。
7. Would(委婉请求/过去意愿)
委婉请求(比will更礼貌):Would you like to join us (邀请时常用)
过去习惯性动作:When I was young, I would go fishing every weekend.(= used to do)
固定搭配:
Would like to do = Want to do(I would like to visit Paris)。
8. Ought to(理应)
语气强于should:You ought to finish your duties.(强调责任)
否定形式:oughtn’t to(You oughtn’t to be late)。
三、中考核心考点与易混点突破
考点1:情态动词表推测的语气层级
情态动词 肯定推测(语气由强到弱) 否定推测(语气由强到弱)
强 must(一定) can’t(不可能)
中 may(可能) may not(可能不)
弱 might(或许) might not(或许不)
例句:
肯定推测:He must be ill. He may be at home. He might be sleeping.
否定推测:That can’t be true. She may not agree. They might not come.
考点2:请求许可的情态动词选择
场景 口语化请求 正式请求 超级委婉请求
例句 Can I go out May I leave Could/Might I ask a question
回答 Yes, you can. Yes, you may. Yes, of course.
考点3:Must与Need的否定回答陷阱
错误案例:
—Must I clean the room —No, you mustn’t.(×错误)
正确:No, you needn’t.(√ must的否定回答用needn’t)
—Need I go now —Yes, you need.(×错误)
正确:Yes, you must.(√ need提问的肯定回答用must)
考点4:Can与Be able to的时态差异
Can:只有现在时(can)和过去时(could),无将来时。
Be able to:可用于各种时态:
将来时:I will be able to drive next year.
完成时:He has been able to swim since age 5.
考点5:反义疑问句中的情态动词
规则:反义问句部分用情态动词的否定或肯定形式,主语用代词。
They can dance, can’t they (前肯后否)
She mustn’t stay out late, must she (前否后肯)
特殊情况:
There must be a mistake, isn’t there (对存在推测,用isn’t there)
四、复杂场景下的拓展用法
1. 情态动词 + 完成时(表对过去的推测或评价)
Must have done:一定做过(肯定推测)
He must have finished the work.(推测已完成)
Can’t have done:不可能做过(否定推测)
She can’t have left—her bag is here.
Should have done:本应该做(实际未做,含责备)
You should have told me earlier.(你本应早告诉我)
2. 情态动词在虚拟语气中的应用
Should:It’s important that he should be here.(虚拟语气中表“应该”)
Would:If I were you, I would study harder.(表“会”)
3. 情态动词的被动语态
情态动词 + be + 过去分词:
The work must be finished today.
Books can’t be taken out of the library.
五、阶梯式巩固练习(附深度解析)
A. 基础通关(情态动词填空)
1. ______ you play the guitar —Yes, but I ______ play the piano.
解析:问能力用Can,否定用can’t,填Can; can’t。
2. ______ I park here —No, you ______. It’s forbidden.
解析:正式请求用May,禁止用mustn’t,填May; mustn’t。
3. You ______ finish the report today—tomorrow is fine.
解析:表“不必”用needn’t,填needn’t。
B. 能力提升(句型转换)
1. He has to go to school by bus.(改为否定句)
解析:实义动词has to,借助doesn’t,填He doesn’t have to go to school by bus.
2. Need she come early (改为肯定句)
解析:情态动词need的肯定句用must,填She must come early.
3. They should finish the work.(改为被动语态)
解析:should + be done,填The work should be finished by them.
C. 中考真题实战
1. (2024·江苏)—______ I bring the book back tomorrow
—No, you ______. You can keep it for a week.
A. Must; mustn’t B. May; needn’t C. Can; can’t D. Need; must
解析:请求许可用May,否定回答“不必”用needn’t,选B。
2. (2023·北京)The light is on in the office. Mr. Li ______ be working now.
A. must B. can’t C. may D. need
解析:肯定推测“一定”用must,选A。
3. (2022·广东)You ______ worry about me. I’m old enough.
A. mustn’t B. needn’t C. can’t D. may not
解析:表“不必”用needn’t,选B。
六、备考策略与记忆工具
1. 场景记忆法
校园场景:
请求老师许可:May I go to the restroom
校规要求:Students must wear uniforms.
家庭场景:
父母建议:You should finish homework first.
客观需要:I have to help my mom cook.
2. 对比表格(文字版)
情态动词对比速记:
能力:can(现在)/could(过去)/be able to(任意时态)。
许可:can(口语)/may(正式)/could/might(委婉)。
义务:must(主观)/have to(客观)/should(建议)。
推测:must(一定)/can’t(不可能)/may(可能)。
3. 错题归类法
第一类:否定回答错误(如must问→needn’t答)。
第二类:推测语气混淆(如must vs. may)。
第三类:情态动词与实义动词混淆(如need to do vs. need do)。
七、知识框架速记
情态动词全维度架构:
情态动词
├── 核心功能:
│ ├─ 能力:can/could/be able to
│ ├─ 许可:may/can/could/might
│ ├─ 义务:must/have to/should/ought to
│ └─ 推测:must/may/might/can’t
├── 语法特征:
│ ├─ 后接原形,无人称变化
│ ├─ 否定直接加not,疑问直接提前
│ └─ 被动语态:情态动词 + be + 过去分词
├── 关键考点:
│ ├─ 推测语气层级(must > may > can’t)
│ ├─ 否定回答规则(must→needn’t, may→can’t)
│ └─ 易混词对比(can vs. be able to, must vs. have to)
└── 拓展用法:
├─ 情态动词 + 完成时(对过去推测)
└─ 虚拟语气中的情态动词(should/would)
学习建议:通过“语境造句+错题复练+真题模考”三轮训练,重点突破“推测类”和“否定回答”题型,结合生活场景(如购物、校园)记忆情态动词用法,确保在中考中灵活运用、精准得分!
21世纪教育网 www.21cnjy.com 精品试卷·第 2 页 (共 2 页)
HYPERLINK "http://21世纪教育网(www.21cnjy.com)
" 21世纪教育网(www.21cnjy.com)

展开更多......

收起↑

资源预览