高中英语 Unit 7 The sea SectionⅣ Grammar Writing学案 北师大版必修3-北师大版高一必修3英语学案VIP专享

Section Ⅳ Grammar & Writing关系副词引导定语从句当先行词在定语从句中作状语时，通常要用关系副词引导定语从句。常用的关系副词有 where，when，why 等。一、关系副词 where1．where 引导的定语从句的先行词往往是表示地点的名词(如place，room，house，spot，school，country 等)，在从句中作地点状语。They went into the hall where the meeting was being held.他们走进正在开会的大厅。2．where 可以引导非限制性定语从句。Galileo lived in the city of Pisa，where there is a leaning tower about 180 feet high.伽利略住在比萨城，那里有座大约 180 英尺高的斜塔。3．关系副词 where 常可用“介词＋关系代词”构成的表示地点的介词短语代替。The office where (at which) he works is not far from here.他工作的办公室离这儿不远。Japan is the place where (in which) earthquakes frequently happen.日本是地震频繁爆发的地方。[温馨提示] where 引导定语从句和状语从句的区别：引导定语从句时，where 是关系副词，在从句中作地点状语，其前有表示地点的名词作先行词，从句修饰先行词；引导状语从句时，where 是从属连词，从句修饰主句的谓语动词，where 前面没有表示地点的名词。He’s got himself into a dangerous situation where he is likely to lose control over the plane.(定语从句)他使自己陷入了一种危险的情况，他很可能会失去对飞机的控制。When you read the book，you’d better make a mark where you have questions.(状语从句)读这本书的时候，你最好在有疑问的地方做一下标记。二、关系副词 when1．when 引导定语从句时，先行词往往是表示时间的名词(如time，day，week，month，year 等)，在从句中作时间状语。He came at a time when I least expected him.他在我最意料不到的时候来了。I’ll never forget the day when I left for college with my father.我永远不会忘记我和父亲动身去大学的那天。2．when 可以引导非限制性定语从句。In the old days，when I was a little boy，the city had no industry to speak of.在过去，那时我还小，这个城市没有工业可言。3．关系副词 when 有时可用“介词＋关系代词”代替。I still remember the day when(on whi...