Unit5Discovering Useful Structures（ppt课件）-2023新人教版（2019）《高中英语》必修第一册.pptx

1、必修一 Unit5 Discovering Useful StructuresRestrictive relative clauses(2)(where,when,why,prep+which/whom)Learning objectives:1.学习使用where,when,why引导定语从句。2.理解并掌握关系副词与“介词+关系代词”即prep+which/whom的转换。relative clause定语从句relative pronouns关系代词relative adverbs关系副词noun 名词一、名词一、名词+关系代词关系代词/关系副词关系副词+定语从句定语从句关系副词关系副词

2、先行词先行词在定从中充在定从中充当的成分当的成分相当于相当于where地点地点状语介词+which(介词取决于与先行词的搭配）when时间时间状语介词+which(介词取决于与先行词的搭配）why原因原因状语for which合作探究一：合作探究一：whereShanghai is a city.I was born in the city.合并为：Shanghai is a city I was born in the city.即：Shanghai is the city which I was born.where 引导定语从句时，先行词为表示地点的名词，关系副词where在定语从句中做

3、地点状语。Shanghai is the city where I was born.注意：where还可以用在表示抽象地点的名词之后，situation,stage,point,position,condition等eg:This is the point I cant agree with you.合作探究二：合作探究二：whenwhen引导定语从句时，先行词为表示时间的名词，关系副词when在从句中做时间状语。I can never forget the day.I first saw you on the day.合并为:I can never forget the day I fir

4、st saw you on the day.I can never forget the day which I first saw youI can never forget the day when I first saw you.合作探究三：合作探究三：whywhy引导定语从句时，先行词通常是reason，关系副词why在从句中做原因状语。I really dont know the reason。He suddenly fell ill for the reason.合并为:I really dont know the reason he suddenly fell ill for t

5、he reason.即：I really dont know the reason which he suddenly fell ill.I really dont know the reason why he suddenly fell ill.练习1.We should remember the day /the earthquake happened.2.The place /I worked is a big company.3.I dont believe the reason /he was late.4.This is the house /was set up by his parents.whenon whichwherein whichwhyfor whichthatwhichThank you