Unit 1 Discovering Useful Structures 定语从句课件-2022-2023学年高中英语人教版（2019）必修第二册

Unit 1 Cultural Heritage 定语从句 人教2019版必修二 Harry Porter is a boy who has magic power. 先行词 关系词 定语从句 关系代词 关系副词 which, who, whom, whose, that where, when,why ,介词+which/whom 关系代词(who, whom, which, that, whose)的指代关系 指人 指物 在定语从句中的成分 who √ 主语 宾语(可省略) whom √ 宾语(可省略) which √ 主语 宾语(可省略) that √ √ 主语 宾语(可省略) whose √ √ 定语 1.when引导定语从句 when表示时间,代替先行词并在定语从句中做时间状语,其先行词往往是表示时间的名词,如time, day, year, month, week等。 2.where引导定语从句 where表示地点, 代替先行词并在定语从句中做地点状语,其先行词往往是具体地点place, room, mountain, airport或抽象地点的名词如case, state, condition, point, situation等。 3.why引导定语从句的用法 why表示原因, 代替先行词并在定语从句中做原因状语,其先行词是表示理由的名词reason。 一、关系副词引导定语从句 关系副词when, where, why引导定语从句时,关系副词也可用“介词+关系代词“代替。 (1)when可以换成“介词+which”。 (2)where可以换成“介词+which”。 (3)why可以用for which来代替。 It was a time when people were divided geographically. 2. Emperor Qinshihuang united the seven major states into one unified country where the Chinese writing system began to develop in one direction. 3. There are many reasons why people learn a foreign language. 4. These were animal bones and shells on which symbols were carved by ancient Chinese people. It was a time at which people were divided geographically. Emperor Qinshihuang united the seven major states into one unified country in which the Chinese … There are many reasons for which people learn a foreign language. These were animal bones and shells where symbols were carved by ancient Chinese people. 其中介词的选择和先行词的搭配有关。 一先:根据先行词的搭配习惯来确定。 二动:根据从句中谓语动词的搭配习惯来确定。 三意义:根据从句所表达的意义来确定。 介词选择的三原则: 一先二动三意义。 根据定语从句中先行词的搭配习惯确定 根据定语从句中谓语动词的搭配习惯确定 根据定语从句所表达的意义来确定 Air, _ which man can’t live, is really important. The film _ I fell asleep was very boring. The pen _which he is writing now was bought yesterday. during which without with Workbook P62—P63 Thank you $