Unit 5 The Value of Money Discovering Useful Structures 课件-2023-2024学年高中英语人教版（2019）必修第三册

The Value of Money Unit 5 Period 3 Discovering useful structures What does Francis Bacon’s saying mean in Chinese? 金钱是善仆，也是恶主 Learning objectives 1. To learn about the different functions of modal verbs. 2. To be able to talk about future events in the past using “would do” and “was / were going to do”. 3 Express modality and talk about future events in the past 1Modal verbs have many functions, including the following (A-F). Find modal verbs in previous sections and discuss their functions. A necessity B possibility C obligation D request E advice F intention 重点词汇 课文 语法 写作 练习 ②Read the passage and fill in the blanks with suitable modal verbs in the box. In the film The Million Pound Bank Note, Henry Adams is stuck in aforeign country withoutmoney and friends, and with nowhere to stay. may must can ought to might had better would should 重点词汇 课文 语法 写作 练习 While this situation ____________seem unusual,it can sometimes happen to travellers. In case it happens to you on a trip abroad, what___________you do? First, and most importantly,you __________stay calm. 重点词汇 课文 语法 写作 练习 Fear ________cause you to become confused. You need to think clearly. Second,you should go to yournearost consulate. They _____________be able to holp to some extent. Third, you_______do well to check with some local charities. 重点词汇 课文 语法 写作 练习 They_______ offer help to travellers in need. Fourth,you_____________avoid getting into trouble. You_______ think that stealing some money orfood wouid help you, but you should not do so. Getting caught_______ruin your life. 重点词汇 课文 语法 写作 练习 Modal verbs 情态动词 The usage of the modal verbs 1. can & could 2. may 和 might 3. will 和 would 4. shall 和 should 5. must 1. can & could 能力，猜测，请求, 许可 Some of us can use the computer now, but we couldn’t ten years ago. You can have my seat. I am going now. Could I have a drink of water, please? Can he still be alive after all this time? If you’re not careful, you could get into even worse trouble. 能力 许可 请求 猜测 猜测 could 表请求，比can更委婉。 Could表推测的可能性比can 小 can/ could have done can’t/ couldn’t have done You _______________ (have) a better mark if you went over the vocabulary. I saw him just now, so he ___________________ (go) abroad. could have had couldn’t been gone 本可以 否定猜测 注意can 的惯用语 On hearing the story , I cannot help laughing . You cannot be too careful with them. You can’t be careful enough. cannot help + 动名词 忍不住做某事 cannot too /enough “无论怎么样..也不为过,越…越好” 2. may 和 might May I have a look at your book? You may use may dictionary so long as you return it before 7:00. He may be waiting for you at the station. They may have got lost. 可能性 许可 请求 may/might have done 过去的猜测 当句中出现 “I am not sure” 等表示不确定含义的时候,常选用may 和might . I ___( may/can) go, but I am not quite sure. 可能性： can > could > may > might 1. 对may的一般疑问句的肯定回答可用may或can, 但作否定回答时要用mustn't或can't。 —May (Might) I have a little brandy? —No, you mustn't. You'd better not. 2. May可以表示祝愿或希望，而might不行。 May they be very happy in the future. May you succeed in the coming year. 3. will 和 would VS used to Ask, if you will, who the owner is. My friend asked if I would go with him. Will/Would you please have a coffee for me? This kind of clothes won’t wash easily. That’s just like her—she would lose her bag in the bus! 意愿 过去的意愿 请求 习惯 would比will客气委婉 I will tell you something important tomorrow. Will you marry me? （助动词）  （情态动词） 14 shall & should & ought to shall shall用于第一、三人称疑问句中，表示说话人征求对方的意见和向对方请示，“…好吗？要不要…？” Shall I open the window for you? Shall he fetch some water for you? shall用于第二、三人称陈述句中，表示说话人给对方的许诺、命令、警告、威胁。 You shall do as I say. Tell him that he shall have the book tomorrow. He shall be punished. shall & should & ought to Should/Ought to 1. 表示义务或责任, 译为为“应该”。 We should/ought to learn from each other. 2. 表示建议或劝告，译为为“可以，应该”。 You should/ought to try your best to better your performance. 3. 表示推断, 译为”应该”, “可能”, “按道理会”。 They should/ought to be there by now. 4. should表示意外或惊讶，译为“竟然”。 It's strange that he should come so late. must & have to Must 1. must表示“必须”(侧重于主观意愿); mustn’t表示“禁止”。 Must I do my homework now? You mustn't smoke here. 2. must表示推测，译为“准是，一定是”(只用于肯定句)。若用于否定句或疑问句，则用can’t (一定不是)。 That can't be the only way. There must be other ways of solving the problem. Have to “必须，不得不”，表示客观需要。而must表示说话人的主观看法。 I don’t have to get up early. I had to get up early. will & would 表示意愿、意志 If you will help me with my English, I will be very happy. 在疑问句中，用于第二人称，表示请求或征求意见，would比will语气更委婉 Will/Would you please give me a hand? 表示习惯性的动作，“总是，常常” The old man is strange. He will sit for hours without saying anything. When I was a child, my mother would read me a story every night. (九) ought to ought to后接动词原形，意思是“应该...，有义务.....”ought to和should是同义词，但ought to语气更强。在各种时态里形式无变化，其否定形式是ought not to表示“不应..... ①They oughtn’t to let their dog run on the road. 他们不该把狗放出来满街跑。 ②If he started out at nine, he ought to be here by now. 要是他九点出发，现在该到这儿了。 ③Look at the sky-it ought to be a fine afternoon. 看看天——下午天气应该很晴朗。 (十) had better (1)[提出建议]某人最好还是.... ① She had better see a doctor if it gets any worse. 她如果病情加重，最好还是去看医生。 ② You had better compare this word with that one. 你们最好把这个词与那个词比较一下。 ③You had better give him a phone yourself !你最好自已给他打个电话! (2) [表示威胁]某人最好..... You had better keep your mouth shut about this. 关于这件事，你最好闭上嘴。 情态动词 ： can could 能力；许可 may might 可能；可以 have to must 不得不 必须 don’t have to needn’t should ought (not) to 应该 will would 意愿 将要 shall had better （not ） do 最好做 dare 敢 need 需要 既是实义动词（有人称时态单复数变化；后接to to sth）也是情态动词 情态动词表示推测 +v/be v-ing (正在做)/ have done (已经做了) must 一定做了….. may might 可能做了….. Can’t couldn’t 不可能做了….. Should have done 本应该做。。。。 could have done 本可以做 needn’t have done 本不必要 $$