Unit 2 Section A Grammar 课件- 2025-2026学年英语人教版（2024）八年级上册

该初中英语课件聚焦情态动词can和could的用法，重点讲解其在请求（Can/Could you...?）和许可（Can/Could I...?）语境中的语义差异及应用，通过对话示例导入主题，结合标记练习、用法总结、匹配活动构建从感知到应用的学习支架。 其亮点在于采用任务型教学，通过小组讨论答语用法、情景对话（如借手机、请求帮忙开门等）提升语言能力，区分请求与许可培养思维品质，练习与活动设计助力学生主动学习。学生能在真实语境中运用语法，教师可借助清晰流程和多样活动提高教学效率。

Home, sweet Home Section A Grammar Unit 2 1 Learning aims 能够识别 can、could 在请求和许可语境中的语义差异，清晰区分不同情境下的用法 能在不同场景中使用can或could 2 Lead in Could you please sweep the floor? Yes, Dad. I’ll do it at once. Could I hang out with my friends after lunch? Sorry, Jim, but you have to pack up your things first. Can I put some flowers on the table? Yes, good idea! Can you help me hang up the photos? Sure. / No problem! What are can and could used for? 3 Activity 1 Learn to use can or could 3a Read the questions with can or could. Notice how they are answered. Write R for requests or P for permission next to each question. R P P R How can we use Can/Could? Could you please sweep the floor? Yes, Dad. I’ll do it at once. Could I hang out with my friends after lunch? Sorry, Jim, but you have to pack up your things first. Can I put some flowers on the table? Yes, good idea! Can you help me hang up the photos? Sure. / No problem! 4 Read the sentences. Find out the usage of can/could. 情态动词 can & could 的用法 1. 用于提出要求或请求 Can/Could you please...?（重点） 2. 用于请求许可 Can/Could I...?（重点） 3. 用于表示能力 can表示现在的能力，could表示过去的能力 情态动词can和could可用于向对方提出请求，也可用于请求对方允许自己做某事。它本身不能作谓语，必须和动词原形一起构成谓语。 Read the sentences. Match the two parts. Make polite requests 提出请求 Ask for permission 请求许可 Can I hang out with my friends after lunch? Can I grow some flowers there? Can I invite my friends to our new house? Could I go out? Could we keep some fish here? Can you sort your things into those boxes? Can you take care of them every day? Could you please help me hang up the photos? Could you please sweep the floor? Discuss in groups to find out how to answer the Can/Could questions. 常用句型 Can / Could you (please) do sth.? 肯定答语 否定答语 Yes, sure/of course. 好的，当然可以。 No problem. 没问题。 With pleasure. 乐意帮忙。 Sure/Of course/Certainly. 当然可以。 Sorry, I can’t. I have to... 对不起，我不能。我得... Sorry, I’m going to... 对不起，我将... I’m afraid I can’t. I have to... 恐怕不行。我得... I’m afraid not. 恐怕不行。 常用句型 Can / Could I do sth.? 肯定答语 否定答语 Yes, you can. 是的, 你可以。 Of course you can. 当然可以。 Yes, please. 是的，去吧/用吧/...... Sorry, you can’t. 对不起，你不可以。 Sorry, I'm afraid you can’t. 对不起，恐怕不行。 Could I hang out with my friends tonight? No, you couldn’t. Sorry, you can’t. ✖ ✔ 在回答用could 提出的请求时， 通常不用 could而用 can。 Activity 2 Use can/could correctly Choose the best question to complete each conversation. 3b 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. 2. A: ______________________________ B: Yes, if you are careful with it. C. Mr Lake, could I go to the toilet? D. Could I use your computer? Choose the best question to complete each conversation. 3b 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? 3. A: _____________________________ B: No, you can’t. You have a basketball game tomorrow, remember? You need a good rest. B. Can I stay out until eleven? Choose the best question to complete each conversation. 3b 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? 4. A: Can I go to the movies? B: Of course. A: ____________________________________ B: I can’t. I have to do some work now. A. Could you give me a ride to town now? Make up conversations for each setting, using can or could. 3c You’re at your friend’s home. You want to call your parents, but your phone is dead. _________________________ _________________ Sure. / Of course. Can / Could I use your phone? 2. You were sick at home yesterday. Your friend went to an English class and took notes. You want to know more about the class. _________________________ _________________ Sure. / Of course. Can / Could I borrow your notebook? 3. You are holding a large box. It is difficult to open the door. Your neighbour comes. _________________________ _________________ Sure. / Of course. Can / Could you help me open the door? 4. You and your classmates want to help clean up the community. Ask your classmates to bring gloves and rubbish bags. ________________________________________________ _________________ Sure. / Of course. Can / Could you bring gloves and rubbish bags? 1 Can I stay out until eleven? Language points until prep.到......时；直到......为止 They didn't have a car until last year. 他们直到去年才有一辆汽车。 You will never truly understand your parents’ great love until you grow up. 直到你长大后，你才会真正理解父母伟大的爱。 until 到······时；直到······为止 常与延续性动词连用，引导时间状语从句，表示动作直到until所表示的时间才结束 not…until 直到......才.... 常与非延续性动词连用，表示动作 直到until所表示的时间才发生 2 Yes, if you are careful with it. be careful with 注意；当心 Be careful with the knife while cooking, and don't cut your fingers. 做饭时小心用刀，不要切伤手指。 Be careful not to wake the baby. 注意别吵醒婴儿。 Be careful — the floor is slippery. 小心——地板很滑。 be careful (not) to do sth. “小心(不要)做某事”。 (2) be careful 可单独使用，表示“小心，当心”，相当于look out 或watch out。 3 You want to call your parents, but your phone is dead. My phone went dead, so I need to charge it. 我的手机没电了,所以我需要给它充电。 There were dead leaves on the ground after the strong wind. 大风过后枯叶落了一地。 I'm afraid he is dead. 恐怕他已经去世了。 (1)【形容词】（因为缺电）不运行的 (2) 【形容词】死的 在句中作定语或表语。the dead 死者 Summary 情态动词 can & could 的用法 1. 用于提出要求或请求 Can/Could you please...?（重点） 2. 用于请求许可 Can/Could I...?（重点） 3. 用于表示能力 can表示现在的能力，could表示过去的能力 20 Exercise 一、根据汉语提示，补全句子。 1. 切洋葱时，请当心你的眼睛。 When you cut up the onions, please _______ _________ _______  your eyes. 2. 我们在课堂上应该认真记笔记。 We should ________ ________ carefully in class. 3. 你的书包乱糟糟。你需要整理它。 Your schoolbag is in a mess. You should ________ ______ _______. 4. 周末我想和朋友去看电影。 I want to ________ ________ ________ ________ with my friends this weekend. 5. 上学期，直到6月底，我们才结束新课。 We _______ finish the new lessons _______ the end of June last term. clean it up be careful with take notes go to the movies didn’t until Homework 1 Make a conversation with can or could. 2 Preview the next period. 22 $$