英语自学网 发表于 2017-9-22 20:50:06

选择定语从句的引导词的技巧

限制性定语从句修饰先行词,对先行词起修饰作用,不同引导词有不同的含义和用法,下面,小编就来给大家分享一下选择定语从句的引导词的技巧,一起来看看吧!
       
        引导词as可引导限制性定语从句,也可引导非限制性定语从句。
        1.在固定词组the same...as,such...as中,as引导限制性定语从句。如:
        He is not such a fool as he looks.
        I've bought the same dress as she is wearing.
        2.当先行词是整个主句时,可用 as /which引导非限制性定语从句。引导词as和which的区别在于:
        ①as引导的非限制性定语从句可放于主句前、主句中、主句后,而which引导的非限制性定语从句一般放于主句后或句中。
        ②as常与从句中的know,see, hear,expect等动词连用,也常用于as often happens,as is often the case(常有的事)等句子中;而which一般不用于以上情况。
        ③as有“正如”的含义,which没有此含义。如:
        As is well known,Shanghai is a big city.
        Some of the roads were flooded, which made our journey more difficult.
       
        关系代词who,whom,whose, which和as能引导非限制性定语从句,而that不能;非限制性定语从句中即使缺宾语,引导词也不能省略;关系副词when,where能引导非限制性定语从句,而why不能。如:
        Abraham Lincoln,who led the United States through the Civil War years,was shot on April 14,1865.
       
        以上就是有关选择定语从句的引导词的技巧的内容了。希望能给大家带来相应的帮助,喜欢就赶快收藏起来吧~
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