(
课件网) Home Sweet Home Unit 2 Section A Grammar Focus 学习目标 1 2 3 4 在真实情境中运用 can/could 表达请求、许可、能力、建议与推测。 辨析 could 表委婉请求 vs. can 表直接许可的语境差异（如：Could I... → 长辈/正式；Can I... → 朋友/非正式）。 通过语境判断 can't/couldn't 的否定推测含义（如：He can't be at home — the lights are off.） 区分 could 表过去能力（I could swim at 5）与 was able to 表具体成功（She was able to escape the fire） 1. Look and fill in the blanks. _____ you please sweep the floor Yes, dad. I’ll do it at once. Could 1. Look and fill in the blanks. _____ I hang out with my friends after lunch Sorry, Jim, but you have to pack up your things first. Could 1. Look and fill in the blanks. Yes, good idea. _____ I put some flowers on the table Can 1. Look and fill in the blanks. Sure. / No problem. _____ you help me hang up the photos Can 2. Read the sentences 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 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. Modal Verbs——— can/could 3. Modal verbs → can/ could (request or permission) 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 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. Read the questions with can or could. Notice how they are answered. Then write R for requests or P for permission next to each question. 3a P P R R 要求，请求 允许 can 和could表示请求或允许 3. Modal verbs → can/ could (request or permission) Please try to write down more sentences to express requests or permission by using can or could. Can you pass me the salt Could you possibly lend me your pen Could we have a moment of your time Could you please send me the report Can you help me with this box Can we leave early today Could you explain this again Can you turn down the music Can 表示要求（直接、非正式） 场景：熟人、平辈或非正式场合 Could 表示要求（委婉、礼貌） 场景：陌生人、长辈、正式场合 Requests 3. Modal verbs → can/ could (request or permission) Please try to write down more sentences to express requests or permission by using can or could. Can I borrow your bike / Yes, you can. Could we open the window /Of course you can. Could I submit this later / Sorry, you can’t. Could I interrupt for a second /Yes, you can. You can use my computer. Can we eat snacks here /Sure, you can. Could I ask a question / Certainly. Can I skip this meeting /No, you can’t. Can 表示允许（轻松、日常） 场景：朋友、家人或非正式许可 Could 表示允许（正式、试探性请求） 场景：礼貌请求许可，尤其对上级/陌生人 Permission 3. Modal verbs → can/ could (request or permission) Make a conclusion 要求允许分场合，can 直 could 弯要记牢； 问句 could ... ...
