Unit 3 Discover useful structures 教案-2022-2023学年高中英语人教版（2019）选择性必修第四册

2019新人教高中英语选择性必修四 Unit3 Sea Exploration-Learning about Language公开课教案 Teaching aims： By the end of this period, students will be able to: 1. identify the functions of infinitives. 2. practise using infinitives in different contexts. 3. express your own ideas using infinitives. Teaching key and difficult points： 1.Help students to analyse the functions of infinitives in a real context and use infinitives properly. 2.Instruct students to learn how to use infinitives. Teaching procedures: StepⅠLead-in Ask students to answer some questions based on the text in the part of Reading and Thinking. 1.Why have humans always been longing to explore the sea? 2.What is the aim of the Belt and Road Initiative? Suggested answers: 1.To promote trade and satisfy their curiosity, humans have always been longing to explore the sea. 2.The aim of the Belt and Road Initiative is to encourage cooperation and trade across the historic Silk Road areas, and strengthen the bonds between China and the rest of the world. StepⅡObserve and analyse Find all the sentences containing infinitives in the reading passage. Then mark their functions. Suggested answers: 1.To complete the great map of the world(As the subject) was a strong passion for the people of early civilisations.   2.Marco Polo’s tales inspired European explorers to search for sea routes (As the object complement) from west to east.  3.Here, merchants from China and many other places met to negotiate trade deals (As the adverbial), which also led to more awareness of each other’s cultures.  4.To reach out across the sea (As the subject) remains a strong desire today.  5.The aim of this initiative is to encourage cooperation and trade (As the predicative) across the historic Silk Road areas, and strengthen the bonds between China and the rest of the world.   6.Trading has grown greatly in recent years, and will continue to do so (As the object) in years to come.  7.In recent years,China has joined other nations on several expeditio