Unit 1 Art Using language Discovering Useful Structures 课件-2023-2024学年高中英语人教版（2019）选择性必修第三册

Discovering Useful Structures Unit 01 ART 新人教选择性必修三 B. 不定式作表语 Learning Aims After this period of the class, you will be able to: 1. understand and grasp the pragmatic features and functions and different meanings of the infinitives as the predicative; 2. use the infinitives properly in the designed context; 3. make up short conversations using the infinitives fluently and correctly. (language output) B. Read these sentences and fill in the blanks using the correct words from the text on pages 2 and 3. Discuss with your partner the function of the italicized infinitives. 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. way purpose Predicative 表语 Predicative 表语 B. 3. In this work, Monet’s _____ was to convey the light and movement in the scene. 4. ___________________________was no longer (to) show reality, but instead to ask the question, “What is art”? aim What they attempted to do Predicative 表语 Predicative 表语 B. 1.基本形式： to+动词原形 2.其否定形式是: not/never to do. 3.注意：不定式没有人称和数的变化。 主动语态 被动语态 一般式 进行式 完成式 完成进行式 to do to be done to be doing to have done to have been done to have been doing 一、不定式的形式 总结归纳 B. 5 1、动词不定式作表语的构成：am/is/are/was/were + 不定式 2、当句子主语的表示目的、打算、计划、任务等时，常用不定式作表语如： aim, desire, wish，ambition, hope, intention, plan, purpose, difficulty, duty, idea, job, method, principle, problem, reason, risk, role, task, way，advice, 等用来解释主语描述的行为或说明该行为带来的结果。另外，不定式前可添加疑问代词或疑问副词，what, who, how, when, where等。 二、动词不定式作表语的结构、含义与功能 B. 3、功能 （1）表示目的 e.g. Her intention is to be admitted into a key university. To learn a language is to use it. （2）表示事态发展的结果或者一种期望 e.g. To take the challenge is to risk his life. Her wish is to become a doctor. All she wanted was to be left alon