Unit 1 Art Discover 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 Grammar 动词不定式作表语 Learning Aims ★ To enable the Ss to master the usage of the infinitive of the verb as the predicative. ★ To enable the Ss to use the relevant grammar flexibly and correctly in the real situation. 不定式的时态和语态： 类别 主动语态 被动语态 意义 一般式 to do to be done 发生在谓语动词之后 完成式 to have done to have been done 发生在谓语动词之前 进行式 to be doing / 正在进行 完成进行式 to have been doing / 一直持续 ①It is hard to give a precise definition. ②Perhaps the best way to understand Western art is to look at the development of Western painting over the centuries. ③During the Middle Ages, the purpose of Western art was to teach people about Christianity. ④ ...the main characters were often made much larger than everyone else to show their importance. ⑤In this work, Monet's aim was to convey the light and movement in the scene ... ⑥He sought to show not just the outer image of his subjects, but their inner warmth and humanity as well. ⑦What they attempted to do was no longer show reality, but instead to ask the question，“What is art？” I.预习检测 (1)动词不定式作主语的句子为句_______。 (2)动词不定式作宾语的句子为句_______。 (3)动词不定式作表语的句子为句_______。 (4)动词不定式作状语的句子为句_______。 (5)动词不定式作定语的句子为句_______。 ① ⑥ ④ ② ②③⑤⑦ 动词不定式（to do ）和动词-ing形式（doing），过去分词（done）一样都是非谓语动词，即在句子中不能充当谓语；可以作除谓语以外的其他任何句子成分，即主语，宾语，表语，定语，状语，补语 不定式的定义： 1.Study the rules ①表示_______。 The first step is to go exploring.第一步是去探索。 1. Perhaps the best way to understand Western art is to look at the development of Western painting over the centuries. 2.What they attempted to do was no longer show reality, but instead to ask the question，“What is art？” 目的 【拓展】主语是以________________, ____ , _________, duty, suggestion,hope,idea,intention,plan等为中心的名词词组时，或者以what引导的名词性分句表示，一般用动词不定式作表语说明主语的内容或目的。 aim the best way to do purpose 1.Study the rules ②表示事态发展的___________________________________。 You must speak out, if we are to remain friends. 如果我们还想继续做朋友的话，你就必须畅所欲言。 You are to die at ninety-eight.你会在98岁时去世。 ③用于第一人称疑问句，表示_______。 What am I to do if I have no money?如果没有钱