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Unit 2 Home Sweet Home
—— Section A Grammar Focus (3a~3c) 学案 ——
语法课：can / could 表请求与许可
人教版（2024）八年级上册 2026-2027学年
姓名 班级
学习目标 Learning Objectives
① 语言能力：能区分can/could表提出请求与征求许可的语境差异；掌握肯定回答（Sure./No problem./Yes, good idea!）与否定回答（Sorry, but...）的表达方式；能运用can/could完成3a/3b/3c语法练习。
② 文化意识：理解英语中礼貌请求的表达方式（如could比can更委婉），培养礼貌沟通意识，养成文明交际习惯。
③ 思维品质：通过情境分析归纳can/could的语用规则，培养对比分析与逻辑归纳能力；通过3c情境创编活动，培养创造性思维与语言运用能力。
④ 学习能力：能借助语法归纳表自主梳理can/could的用法规律；能在真实情境中恰当运用礼貌请求和征求许可，提升自主学习与迁移运用能力。
板块一：课前预习 Pre-class Preview
词汇预习表 Word Preview Table
预习本课重点词汇，根据词性和释义补全单词，并完成例句填空。
单词 词性 释义 例句填空
u____ prep. / n t l/ 到……时；直到……为止 Could I hang out with my friends u____ after lunch
b______________ 注意；当心 Yes, if you b______________ it.
m____ n. / mu vi/ 电影 Can I go to the m____
d___ adj. /ded/ 不运行的；死的 Your phone is d___.
n___ n. /n t/ 笔记；记录；便条 My friend took n___ in class.
t_________ 做笔记 Could you t_________ in the English class
c_______ 清扫 We want to help c_______ the community.
c________ n. /k mju n ti/ 社区；社团 Let's help clean up the c________.
r______ n. / r b / 垃圾 Can you bring some r______ bags
t_________ 电影院 Can I go to t_________
【提示】 例句填空处只给出目标词的小写首字母，请补全剩余字母；下划线数量等于剩余字母数。
话题预测 Topic Prediction
根据课题 Unit 2 Section A Grammar Focus (3a~3c)，预测本课内容。
Q: What do you think this lesson is about
A: I think it's about ________________________________________.
板块二：课堂探究 Class Exploration
语法归纳表 Grammar Summary
3a. Read the questions with can or could. Notice how they are answered. Then summarize the rules for making requests and asking for permission.
结构形式 用法说明 例句 中文翻译
Can/Could you ... 请求他人做某事 用于提出请求（Requests），could比can更委婉礼貌 Could you please sweep the floor Can you help me hang up the photos 请你打扫一下地板好吗？ 你能帮我挂照片吗？
Can/Could I ... 请求允许自己做某事 用于征求许可（Permission），could比can更委婉礼貌 Could I hang out with my friends after lunch Can I put some flowers on the table 午饭后我能和朋友出去玩吗？ 我可以在桌上放些花吗？
肯定回答 同意对方的请求或许可 Yes, Dad. I'll do it at once. Sure. / No problem! Yes, good idea! 好的，爸爸。我马上去做。 当然。/ 没问题！ 好主意！
否定回答 礼貌拒绝对方的请求或许可，需给出理由 Sorry, Jim, but you have to pack up your things first. No, you can't. You have a basketball game tomorrow. 抱歉，吉姆，但你得先收拾好东西。 不行，你明天有篮球比赛。
can vs could 语气差异 can较直接，could更委婉礼貌；正式场合或对长辈用could Can you sweep the floor （直接） Could you please sweep the floor （委婉） 你能打扫地板吗？（直接） 请你打扫一下地板好吗？（委婉）
语法选择 Grammar Choice (3b)
3b. Choose the best question to complete each conversation.
选项：
A. Could you give me a ride to town now
B. Can I stay out until eleven
C. Mr Lake, could I go to the toilet
D. Could I use your computer
1. A: _______________________
B: Of course you can. Let me show you the way.
2. A: _______________________
B: Yes, if you are careful with it.
3. A: _______________________
B: No, you can't. You have a basketball game tomorrow, remember You need a good rest.
4. A: Can I go to the movies
B: Of course.
A: _______________________
B: I can't. I have to do some work now.
口语活动框 Oral Practice (3c)
3c. Make up conversations for each setting, using can or could.
Useful Expressions: — Can / Could you (please) ... — Can / Could I ... — Sure. / Of course. / No problem. — Yes, good idea! — Sorry, but ... Setting 1: You're at your friend's home. You want to call your parents, but your phone is dead. A: ________________________ B: ________________________ Setting 2: You were sick at home yesterday. Your friend went to an English class and took notes. A: ________________________ B: ________________________ Setting 3: You're holding a large box. It is difficult to open the door. Your neighbor comes. A: ________________________ B: ________________________ Setting 4: You and your classmates want to help clean up the community. A: ________________________ B: ________________________
板块三：课堂练习 Class Practice
当堂检测 In-class Test
根据所给情境，用can/could创编对话。要求：语法正确、语境合理、礼貌表达。
1. You're at school. You left your pencil case at home and need to borrow a pen from a classmate.
A: ____________________________________
B: ____________________________________
2. You're planning a picnic. You want your friend to bring a basket and some drinks.
A: ____________________________________
B: ____________________________________
3. You're in the library. You want to borrow a dictionary, but you're not sure if it's allowed.
A: ____________________________________
B: ____________________________________
4. You're at a restaurant. You want to order a special dish, but you need to check the ingredients first.
A: ____________________________________
B: ____________________________________
板块四：归纳总结 Summary
重点词汇默写框 Key Vocabulary Dictation
英文与中文交替留空，请补全对应内容。
英文 中文
until __________
__________ 注意；当心
movie __________
__________ 不运行的；死的
note __________
__________ 做笔记
clean up __________
__________ 社区；社团
rubbish __________
__________ 电影院
重点句式梳理框 Key Sentence Patterns
can / could 表请求与许可句式梳理： 1. 提出请求: Can/Could you (please) + V.原形 + 其他 请求对方做某事，could比can更委婉 Could you please sweep the floor / Can you help me hang up the photos 2. 征求许可: Can/Could I + V.原形 + 其他 请求允许自己做某事，could比can更委婉 Could I hang out with my friends after lunch / Can I put some flowers on the table 3. 肯定回答 同意对方的请求或许可 Yes, Dad. I'll do it at once. / Sure. / No problem! / Yes, good idea! 4. 否定回答 礼貌拒绝并给出理由 Sorry, Jim, but you have to pack up your things first. / No, you can't. You need a good rest. 5. can vs could 语气差异 can直接，could委婉；正式场合用could Can you sweep the floor （直接）→ Could you please sweep the floor （委婉）
板块五：参考答案 Reference Answers
词汇预习表答案
（答案只给剩余小写字母）
1. until → ntil
2. be careful with → e careful with
3. movie → ovie
4. dead → ead
5. note → ote
6. take notes → ake notes
7. clean up → lean up
8. community → ommunity
9. rubbish → ubbish
10. the movies → he movies
语法选择答案 (3b)
1. C (Mr Lake, could I go to the toilet )
2. D (Could I use your computer )
3. B (Can I stay out until eleven )
4. A (Could you give me a ride to town now )
当堂检测答案（情境创编对话）
A: Could I borrow a pen from you B: Sure.
A: Could you bring a basket and some drinks B: Of course.
A: Could I borrow a dictionary B: Sorry, it's not allowed.
A: Could you tell me what's in the dish B: Sure. There are potatoes and chicken in it.
词汇默写框答案
1. until | 到……时；直到……为止
2. be careful with | 注意；当心
3. movie | 电影
4. dead | 不运行的；死的
5. note | 笔记；记录；便条
6. take notes | 做笔记
7. clean up | 清扫
8. community | 社区；社团
9. rubbish | 垃圾
10. the movies | 电影院

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