Unit 5 The value of money Discovering Useful Structures 课件-2022-2023学年高中英语人教版（2019）必修第三册

Unit 5 THE VALUE OF MONEY Discovering useful structures 1 obligation intention nowhere in case extent to…extent opera n. 义务；职责；责任 n. 打算；计划；意图；目的 adv. 无处；哪里都不 以防；以防万一 n. 程度；限度；大小；范围 到……程度；在……程度上 n. 歌剧 Words review Read after the tape and speak out the Chinese immediately. musical dinosaur hug pursue duty on duty n. 音乐剧 adj. 音乐的 n. 恐龙 vt.&vi. 拥抱；抱紧 vt. 追求；致力于 n. 责任；义务；职责；值班 值班；执勤 Words review Modal verbsModal verbs *定义； *基本特征； *常见情态动词、其否定式、其缩略形式； *情态动词的表意功能； *常见情态动词的用法； *情态动词的特殊用法。 Focus on 基本用法 情态动词 情态动词是一种本身有一定的词义，但要与动词原形一起使用，给谓语动词增添情态色彩，表示说话人对有关行为或事物的态度和看法，认为其可能、应该或必要等。 定义 : 情态动词 1. 在形式上，情态动词没有实义动词的各种变化，只有could, would, had to, might 等几个过去式，其他情态动词如must, ought to等的过去式皆与现在式同形。 2. 在意义上，大多数情态动词有多个意义。 3. 在用法上，情态动词与助动词一样，须后接动词原形，构成谓语动词。 基本特征 : 常见情态动词、其否定式、其缩略形式 : 情态动词 否定式 缩略形式 can could may might shall should 情态动词 否定式 缩略形式 will would must had better ought to can not can't could not couldn't may not / might not mightn't shall not shan't should not shouldn't will not would not must not had better not ought not to won't wouldn't mustn't oughtn't / Find the sentences using modal verbs in the passage.. 1. Oliver believes that with a million-pound bank note a man could live a month in London. 2. Would you step inside a moment, please? 3. Good morning, sir, would you please come in? 4. May we ask what you're doing in this country...? 5. Well, I can't say that I have any plans. 6. Well, you mustn't worry about that. 7. Could you offer me work here? 8. If you don't mind, may I ask you how much money...? 9. Well, it may seem lucky to you but not to me. 10. If you’ll excuse me, I ought to be on my way. 11. You mustn't think we don't care about you. 12. You can't open it until two o'clock. What functions do these model verbs have?. A. necessity 表示必要性 1. The chicken must be cooked thoroughly. 2. You have to book in advance. B. possibility 表示可能和推测 1. That might not be true. 2. Oh, you must be Lily's husband. C. obligation 表义务性