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

B3U1 Discovering useful structures教学案 Lead-in 1. 现在分词形式表动作有两个基本特点: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。 a falling leaf 正在飘落的树叶（正在发生） a fallen leaf 已经落地的树叶（已经完成） 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） 2. 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，但被动的动作正在发生，done 表被动，但被动的动作已经完成 The stadium being built now will be the biggest one in our city.（正在发生） The stadium built last year is the biggest one in our city.（正在发生） (1) The topic ____________ (discuss) now has drawn attention. (2) The problems ________ (discuss) yesterday is very puzzling. V-ing 形式做定语 一、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. 现在分词做定语的位置 （1）一般情况下单个现在分词做定语前置，现在分词短语作定语后置。 （2）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 时后置 2. 现在分词短语与定语从句的互换 1.现在分词（短语）作限制性定语时,可与限制性定语从句互换。 They lived in a room facing the street.=They lived in a room that faces the street. The man standing there is Peter’s father.= The man who is standing there is Peter’s father. Anybody swimming in this river will be fine.=Anybody_________________________ will be fined. 2.现在分词（短语）用作非限制定语, 相当于非限制性定语从句, 这时与句子其他部分用逗号分开。 His brother, working as a teacher, lives in Beijing. =His brother, who is working as a teacher, lives in Beijing. The apple tree, swaying gently in the breeze, tastes good. =The apple tree__________________________________tastes good. 2、 情绪类使令性动词的现在分词作定语，相当于形容词，说明被修饰词的性质或特征。 情绪类使令性动词V-ing形式作定语，相当于形容词，用来修饰物，表示其特征或性质，意为“令人……的”。常用的此类词有：exciting，amusing，astonishing，shocking，puzzling，confusing... 区分：情绪类使令性动词V-ed形式作定语，相当于形容词，用来修饰人，表示其主观心理感受，意为“感到……的”。常用的此类词有：excited，amused，astonished，shocked，puzzle，confused. 3、 动名词作定语,表示被修饰词的属性、作用或用途. 1.动名词作定语,表示被修饰词的属性作用或用途,作 “供……用”,相当于介词for 短语,置于被修饰词前。 drinking water =water for drinking ;_____ sticks =sticks for walking ;a ______ room =a room for reading 2.现在分词和动名词作定语的区别 There is a swimming pool in our school. 动名词相当于名词，体现被修饰词的作用和用途 There is a swimming boy in the pool. 现在分词相