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定语从句PPT

定语从句的概念定语从句(Attributive Clauses)在句中做定语,修饰一个名词或代词,有时也可以修饰部分或整个句子。被修饰的名词、代词、或句子...
定语从句的概念定语从句(Attributive Clauses)在句中做定语,修饰一个名词或代词,有时也可以修饰部分或整个句子。被修饰的名词、代词、或句子通常称作先行词(antecedent)。定语从句通常出现在先行词之后,由关系词(关系代词或关系副词)引导。关系代词有:who, whom, whose, that, which, as。关系副词有:when, where, why。注意:关系代词、关系副词在定语从句中担任句子成分。定语从句的分类根据定语从句与先行词的关系,定语从句可分为限制性定语从句(restrictive attributive clause)及非限制性定语从句(non-restrictive attributive clause)。限制性定语从句与主句之间不用逗号隔开,语法上和主句不可分割,是对先行词的修饰与限制,如果去掉,主句的意义将会不完整或发生改变。限制性定语从句是对先行词的修饰,起到“画龙点睛”的作用,它和主句之间是“荣辱与共”的关系。非限制性定语从句与主句之间通常用逗号隔开,起补充说明作用,如果将其去掉,主句的意义仍然完整。非限制性定语从句只是对先行词的附加说明,起补充说明的作用,它和主句之间是“松散”的关系。关系代词引导的定语从句whowhom, that这些词代替的先行词是人的名词或代词,在从句中所起作用如下:Is he the man who/that wants to see you?他就是你想见的人吗?(who/that在从句中作主语)He is the man whom/that I saw yesterday.他就是我昨天见的那个人。(whom/that在从句中作宾语)Whose 用来指人或物(只用作定语, 若指物,它还可以同of which互换),例如:They rushed over to help the man whose car had broken down. 那人车坏了,大家都跑过去帮忙。Please pass me the book whose (of which) cover is green. 请递给我那本绿皮的书。whichthat它们所代替的先行词是事物的名词或代词,在从句中可作主语、宾语等,例如:A prosperity which / that had never been seen before appears in the countryside. 农村出现了前所未有的繁荣。(which / that在句中作主语)The package (which / that) you are carrying is about to come unwrapped. 你拿的包快散了。(which / that在句中作宾语)关系副词引导的定语从句when 指时间其先行词表示时间,在句中作时间状语,例如:This was the time when he arrived. 这是他到达的时间。说明:(1)表示时间“time"作先行词,关系副词用when,也可以替换为that,in which,at which,on which。(2)表示地点“place"作先行词,关系副词用where,也可以替换为that,in which,at which,on which。(3)why指原因,其先行词是原因,起作用相当于in which(the reason for ...)。例如:The reason why he refused the invitation is not clear,他拒绝邀请的原因还不清楚。(4)关系副词引导的从句可以由“介词+关系代词”引导从句替代,例如:The reason why/ for which he refused the invitation is not clear.The place where/ in which he lives is very far away.The time when/ at which he will arrive has not been decided yet.(5)关系副词when, where, why的含义相当于"介词+ which"结构,因此常常和"介词+ which"结构交替使用,例如:There are occasions when (on which) one must yield. 任何人都有不得不屈服的时候。Beijing is the place where (in which) I was born. 北京是我的出生地。Is this the reason why (for which) he refused our offer? 这就是他拒绝我们帮助他的理由吗?where 指地点其先行词表示地点,在句中作地点状语,例如:This is the place where he used to live. 这是他过去居住的地方。why 指原因其先行词是原因,起作用相当于in which(the reason for ...)或for which(the reason that ...),在句中作原因状语,例如:The reason why he came late was that his car broke down. 他迟到的原因是他的车坏了。关系代词that的用法that既可以用于指人也可以用于指物。在从句中作主语、宾语或表语。作定语从句(续)关系代词that的用法(续)**that既可以用于指人也可以用于指物。在从句中作主语、宾语或表语。作主语时不可省略,作宾语可省略。**例如:关系代词which的用法which通常用于指物在从句中作主语、宾语或表语。作主语时不可省略,作宾语可省略。例如:关系代词as的用法as通常用于指物也可以用于指人,在从句中作主语或宾语。引导限制性定语从句时,先行词前通常有such, the same, as等词修饰。例如:省略关系代词的情况关系代词作宾语时可以省略例如: