Unit 3 Fascinating parks Discovering Useful Structures 语法课件-2022-2023学年高中英语人教版（2019）选择性必修第一册.pptx

动词-ing形式V-ing作 主语 1.To master the basic grammar rules of V-ing form as the subject and object. (掌握V-ing形式做主语和宾语的基本语法规则。)2. To understand the grammar rule of “It” as formal subject. （理解It作形式主语的语法规则。）3. To put what had been taught into practice. Learning goals: Lead-in一个句子中有且只有一个谓语动词多个谓语怎么办？思考：在一个句子已有谓语动词且没有连词和从句的情况下第二个动词要怎么办？1. Even though the sun is brightly shining, telling whether it is morning or night is impossible. 2. Getting here is quite difficult, so apart from the Sami very few people have ever seen Sarek. I love English. 句号、问号等断开and、but、so等连词从句 3. For hundreds of years, ________ (look) after reindeer was a way of life for the Sami. (教材P26)4. _______ (be) in such a beautiful and wild place makes me feel blessed to be alive.(教材P27)Beinglooking在一个句子已有谓语动词且没有连词和从句的情况下第二个动词要用非谓语的形式非谓语动词的三种形式to do 动词不定式V-ing 动名词 现在分词V-ed 过去分词 关于动词-ing形式的基本情况1．动词-ing形式是动词的一种非谓语形式，包括现在分词和动名词两种。 1. a swimming boy a swimming pool 2. a sleeping car a sleeping baby 动词-ing形式在句中的语法作用v-ing形式动名词现在分词主语宾语表语定语定语表语状语宾补Playing with fire is dangerous.Jim likes jumping in muddy puddles.Her idea is building up a new company.People living there are quite friendly.He really needs a washing machine.The performance was really amazing.Laughing and talking, they went in.I love to watch her performing on the stage. 语法体会：完成下列三个任务并作出小结。Task1: 1. ______ (sing) is their hobby. 2. ______(do) exercise is the best way to lose weight. 3. ______(fly) like birds is their dream. 小结：___不能作主语,___形式可以作主语,往往表示经常性/习惯性动作, 谓语动词用____。 Task 2: 例: Trying to escape is no use. It is no use trying to escape. 1. Seeing the film is worthwhile. __ is worthwhile _______ the film 2. Playing computer games is a waste of time. __ is a waste of time _______ computer games. 3. Playing with friends is pleasant. __is pleasant ________ with friends.小结：用_____作形式主语，把真正的主语V-ing形式移置____。 1.___