中小学教育资源及组卷应用平台 Unit3 Section A Grammar focus-4c教学设计 教学目标要求 1．能使用情态动词could有礼貌地提出请求并作答。如：Could you help me do the dishes? No, I can’t. I cut my finger and I’m trying not to get it wet. 2．能使用情态动词could向别人请求许可并作答。如：Could I hang out with my friends after the movie? Yes, but don’t come back too late. 3．能谈论对不同家务活的不同观点，并能阐述原因。如：I hate some chores but I like others. I don’t want to do that. It’s boring. 4．能运用语言知识进行对话、进行交际。 5．能认读并能工整书写所学单词：pass, borrow, lend, finger, hate, chore, while等。 6．能模仿录音正确朗读，分角色对目标语进行进一步的表达。例如，Could I borrow that book? Yes, sure. No problem. I finished reading it last night. Step 1.Revision: 根据所学内容，写出下列短语。 叠衣服 做菜 用某人的电脑 扔垃圾 铺床 扫地 熬夜 生某人的气 带……出去散步 打扫客厅 在……上工作 过来 做家务 搭车 Free talk: A: Mum, could I go out for dinner with my friends? B: Sure, that should be OK. A: Could I get something to drink with my friends after the movie? B: Sure, you can. A: Could I get something to drink with my friends after the movie? B: No, you can’t, you have a basketball game tomorrow. Step 2 Grammar focus: Key sentence structures Could you（please）+ V-原形？ 表示委婉地提出请求 1. Could you please clean your room? Yes, sure./ Of course./ Certainly./All right. 2. Could you please do the dishes? Sorry, I can’t. I have to do my homework. —Peter, could you please take out the trash? —Sure, Mom. —Could you please do the dishes? —Sorry, I can’t. I have to do my homework. 情态动词的用法： 只作情态动词的 can / could, may / might, ought to, must可情态可实义的 need, dare 可情态可助动词的 shall / should, will / would 相当于情态动词的 have to, used to 1) 情态动词不能单独做谓语, 除ought和have外, 后面只能接不带to的不定式。 2) 情态动词没有人称, 数的变化, 但有些情态动词, 如can、will也有一般式和过去式的变化。 情况 3)?情态动词的“时态”形式并不是时间区别的主要标志, 不少情况下, 情态动词的现在式形式和过去式形式都可用来表示现在时间、过去时间和将来时间。 can 和could： 1) can的主要用法是： ? A.? 表示体力或脑力的能力： ? e.g. The girl can dance very well. B.? 表示说话的推测﹑事物的可能性等: e.g. Can the news be true? C. 在口语中, can可以表示请求或允许: e.g. Can I sit here? can表示“能够”时与短语be able to同义，但can只用于一般现在时或过去时，而后者可用于各种时态。另外，can表示个人有某种能力，而be able to表示某人通过努力、克服困难做成某事，相当于succeed in doing sth.；叙述过去事实时，最好用was / were able to，因为could只表示过去具有某种能力。 如： Can you understand the different kinds of English these people are using? Two years later, he was able to speak very good Chinese. 2) could的主要用法是： A. could 是can的过去式, 表示与过去 有关的能力和推测: e.g. We all knew that the young man couldn’t be a doctor. B. could可以代替can表示请求, 但语气较can客气、委婉: e.g. Could you lend me your dictionary? Could I use your bike? 3) can和could接动词的完成形式， ... ...
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