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

人教 必修第三册 Unit 5 Period 3 Discovering Useful Structures ( 英语 ) ENGLISH 新 课 导 入 Read the following sentences and translate them into Chinese. How do modal verbs change the meanings of the sentences? A. The exam may be difficult. a. The exam is difficult. B. You should be studying harder. b. You are studying harder. C. I can study all night during the semester. c. I study all night during the semester. facts possibility (A & C), advice (B) 1）复习和梳理常见情态动词的表意功能，能够根据语境选择恰当的情态动词，得体表达情绪、态度、意图等； 2）掌握过去将来时的两种结构及其表意功能，能正确运用过去将来时态。 新知讲授 课堂总结 学习目标 课 堂 学 习 Modal verbs have many functions, including the following ones. Find modal verbs in previous sections and discuss their functions. A necessity B possibility C obligation D request F advice G intention 新知讲授 课堂总结 学习目标 课 堂 学 习 Modal verbs have many functions, including the following ones. A necessity B possibility C obligation D request F advice G intention Find modal verbs in previous sections and discuss their functions. It may seem lucky to you but not to me! You’d better not open it. You can’t open it until two o’clock. Would you step inside a moment, please? You mustn’t think we don’t care about you. Could you offer me work here? They shouldn’t be making a bet on him. necessity request possibility obligation advice intention obligation 新知讲授 课堂总结 学习目标 Grammar I. Modal verbs 情态动词 1. can/could ① 表示能力, can表示现在的能力, could主要指过去的能力。 Eg. You can tell the significance of climate change to us. She could play the piano at the age of five. 【易错精点】can表示能力的时候, 还可以用be able to代替, 表示后来通过努力终于做成了某事。 Eg. He was a good swimmer so he was able to swim to the riverbank when the boat sank. 新知讲授 课堂总结 学习目标 ② 表示请求或许可。 当请求允许做某事时, 两者均可用, 但用could语气更委婉。当表示允许某人做某事时, 一般要用can, 而不用could。 Eg. —Can/Could I use your bike tomorrow morning? —Yes, you can. /No, I’m afraid not. ③ 表示推测。 can表推测时一般用于否定句和疑问句中(could一般无此限制)。表示对过去发生的行为怀疑或不肯定时, 常用“can/could + have + 过去