U1 Discovering useful structures同步课件-2022-2023高中英语同步备课堂（人教版2019）（必修第三册）

Unit1 Festivals and celebrations Discovering Useful Structures 现在分词表动作两个基本特点:动作主动或者进行，体现被修饰名词的状态。 1.在时间上表示动作正在进行。 试比较： a fallen leaf 已经落地的树叶（已经完成） eg： a falling leaf 正在飘落的树叶（正在发生） a burnt house a burning house boiling water boiled water a developing country a developed country 2. 在语态上表示动作为主动语态。 The girl performing on the stage has a gift for dance（主动语态） I love the play performed by this famous star（被动语态） 以上doing，只表动作时间上正在进行 二. 现在分词有被动，其形式为being done但与过去分词done表被动有区别。 being done表被动，被动的动作正在发生，done 表被动，被动的动作已经完成 The stadium being built now will be the biggest one in our city. 现在正在被建造的那座体育场 The stadium built last year is the biggest one in our city. 去年建造的那座体育场 (1)The topic ____________ (discuss) now has drawn attention. (2)The problems ________ (discuss) yesterday is very puzzling. being discussed discussed V-ing 形式做定语 ONE 一般动词的现在分词作定语修饰名词 ---动作主动或者正在进行，说明被修饰名词状态 1.V-ing做定语的位置 2.现在分词短语与定语从句的互换 a girl dancing (dance) on the stage 动作主动且进行 a burning (burn) house 动作进行但非主动 （1）说明被修饰者的状态。表动作主动或者正在进行 a sleeping (sleep) baby 动作主动且进行 a barking (bark) dog 动作主动且进行 位置：作前置/后置定语，说明被修饰名词的状态 1.The boy standing by the window is my classmate.（后置） 2.The girl performing on the stage has a gift for dance.（后置） 3.There’s a burning house at the corner.（前置） 4.Families gather to admire the shining moon.（前置） 如现在分词修饰由 some/any/no + thing/body/one 所形成的不定代词或指示代词those 时，分词在这些被修饰词的后面。 1.Anyone will be punished. 2.I have something to say. 3.Anything is welcomed here. 2. swimming interesting amazing 小试牛刀 1 There was nothing to be seen or heard, not even a_______(bark) dog. 2 Passing the Comedy Theatre I happened to look up and saw the clouds lit by the_______(set)sun. 3 I reached for a cigarette with___________ (tremble) hands, and lit it. 4__________ (sing)people, arm in arm, filled the streets. barking setting trembling Sin