Unit 1 Discovering useful structures 不定式作表语课件-2023-2024学年高中英语人教版（2019）选择性必修第三册

Unit 1 Art Discovering useful structures Learning objectives Understand the function and meaning of the infinitive when used as a predicate. Distinguish the difference between -ing form and infinitive constructions Review the use of infinitives as object, object complement, attributive, adverbial and use this structure correctly to describe the relevant content. Read these sentences from the previous text and fill in the blanks using words from the text. Discuss with your partner the function of the italicised infinitives. Discover useful structures 1 Perhaps the best ______ to understand Western art is to look at the development of Western painting over the centuries. 2 During the Middle Ages, the _________ of Western art was to teach people about Christianity. 3 In this work, Monet's _____ was to convey the light and movement in the scene… 4 _______ was no longer show reality, but instead to ask the question, “What is art?” way purpose aim It Introduction To be a doctor is hard. (不定式作________ ) His work is to drive a car. (不定式作________) I want to tell you a story. (不定式作________) She was the last student to leave the classroom.(不定式作______) Tell him to leave here next week.(不定式作_______) 主语 表语 宾语 定语 宾语补足语 动词不定式不能单独作谓语，可以作主语、宾语、表语、定语、补语等。 Why does he come so early? Discovery His aim is to take the first bus. 1. 结构 动词不定式可以放在be, become, sound, taste, prove等_______后面作表语。 2. 功能 ① His plan is to clean the room.他的计划是打扫房间。 The students are to meet at the school gate tomorrow.明天学生们将在学校大门口见面。 系动词 Discover and Find Presentation 主语(事物)＋be＋不定式(作表语)表示主语的具体内容 主语(人)＋be＋不定式(作表语)表示将来，为“即将”之意。 Discover and Find 3. 考点 Our duty is to help the young children to grow better.  My work is to clean the room every day. The purpose of education is to develop a fine personality in children. What he hoped was to be admitted into the university. Tip 1：主语是以 ______________________________________________ _______________________________________________________________________________________