Unit1 Discover useful structures 课件-2022-2023学年高中英语人教版（2019）选择性必修第三册

Unit 1 Art Period 4 Discover useful structures Infinitives as the predicative(2) To learn the usage of infinitive as predicative. To use the grammar flexibly in the real situation. Lead-in 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 his 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 What they attempted to do Read these sentences and fill in the blanks using the correct words from the text on pages 2 and 3. 请分析下列句子成分，找出谓语和非谓语动词 1. To improve my English, I decide to learn grammar attentively. 2. Going to bed early and getting up early is beneficial to our health. 3. Seen from the top of the hill, our school looks beautiful. 4. The study, published in 2009, found that when writing with a pen and paper, participants wrote longer essays and more complete sentences and had a faster word production rate. Lead-in Presentation 动词不定式是非谓语动词的一种，它没有人称和数的变化，动词不定式具有名词、形容词和副词的特征，在句中可以作主语、宾语、表语、定语、状语、宾语补足语等，但不能作谓语。动词不定式(短语)作表语主要表主动和表将来。 基本形式： to+动词原形 其否定形式是:“not/never to do”/not do 动词不定式做表语 主动语态 被动语态 一般式 to do to be done 进行式 to be doing --------- 完成式 to have done to have been done 完成进行式 to have been doing --------- Presentation Presentation 系动词分为五种 1、状态系动词 be 2、持续系动词 用来表示主语继续或保持一种状况或态度, keep, rest, remain, stay, lie, stand等 3、感官动词 feel,sound,seem, smell, sound, taste,appear, look等 4、变化系动词 become, grow, turn, fall, get, go, come, run 等 5、终止系动词 prove, trun out, 表达"证实","变成"之意 Presentation 动词不定式(短语)作表语的用法 1．表示目的 The next step is to make sure that you know what is needed. The purpose of education is to develop a fine personality in children. Her dream is to make a movie. 不定