where、when、-why定语从句.ppt

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1、1. 引导定语从句。引导定语从句。2. 代替先行词。代替先行词。3. 在定语从句中担当一个成分。在定语从句中担当一个成分。关系词的三个作用关系词的三个作用: :确定关系代词的步骤确定关系代词的步骤1.先找先行词，先找先行词，2.看先行词指的是人还是物。看先行词指的是人还是物。3.看关系词在从句中充当的成分看关系词在从句中充当的成分。where、when、 why 引导的定语从句引导的定语从句The room is comfortable (舒适舒适). I live in the room.The room where I live is comfortable whichwherewhere

2、代替地点，相当于代替地点，相当于“介词介词+which+which”，在从句中充当在从句中充当状语。状语。in 对比对比：1、This is the farm we visited last week.This is the farm. We visited the farm last week.（作宾语）2、This is the farm we worked last week.This is the farm.We worked on the farm last week.（作状语）解题关键解题关键：看引导词在从句中充当的成分：作主语或宾语用that/which；作状语用where。(t

3、hatwhich) where补充：1、当先行词为point, situation, case, stage等表示模糊的地点时，定语从句的引导词也可用where.vI can think of many cases where the students know a lot of words but couldnt write a good essay.2、当先行词为way时，定语从句用that/in which/不填引导。vI dont like the way thatin which不填不填 you treat her.I will never forget the time. We w

4、orked on the farm during that time.I will never forget the time when we worked on the farm.during whichwhenwhen代替时间，相当于代替时间，相当于“介词介词+which+which”，在从句中充当时间在从句中充当时间状语。状语。Oct.1,1949 is the day whenon which the PRC was founded.Oct.1,1949 is the day.The PRC was founded on the day.对比对比：1、Do you remember t

5、he days we spent together?Do you remember the days?We spent the days together .（作宾语）2、Do you remember the days we worked together?Do you remember the days?We worked during the days together?（作状语）解题关键解题关键：看引导词在从句中充当的成分：作主语或宾语用that/which；作状语用when。(thatwhich) whenThis is the reason.He was late for the

6、reason.This is the reason why he was late.for whichwhywhy代替代替reason(reason(原因），相当于原因），相当于“for+whichfor+which”，在从句中充当原因，在从句中充当原因状语。状语。对比对比：1、I know the reason he gave you.I know the reason.He gave you the reason.（作宾语）2、I know the reason you failed.I know the reason.You failed for the reason.（作状语）解题关键

7、解题关键：看引导词在从句中充当的成分：作主语或宾语用that/which；作状语用why。(thatwhich) why关系副词的用法关系副词的用法关系副词关系副词指代先行指代先行词是词是在从句中充当的在从句中充当的成分成分when (=at/in/on /during which) where (=in/at which)why (=for which) 时间时间时间状语时间状语地点地点地点状语地点状语原因原因原因状语原因状语v关系副词引导定语从句时，既引导定语从句，又在定关系副词引导定语从句时，既引导定语从句，又在定语从句中充当状语。语从句中充当状语。3.I can still remember the sitting-room _ my mother and I used to sit in the evening.A. what B. which C. that D. where 4.I shall never forget those years _ I lived in the country with the farmers , _has a great effect on my life.A. that, which B. when, whichC. which, that D. when, who