限制性定語從句修飾先行詞,對先行詞起修飾作用,不同引導詞有不同的含義和用法,下面,小編就來給大家分享一下選擇定語從句的引導詞的技巧,一起來看看吧!

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引導詞as可引導限制性定語從句,也可引導非限制性定語從句。

1.在固定詞組the same...as,such...as中,as引導限制性定語從句。如:

He is not such a fool as he looks

I've bought the same dress as she is wearing

2.當先行詞是整個主句時,可用 as which引導非限制性定語從句。引導詞aswhich的區(qū)別在于:

as引導的非限制性定語從句可放于主句前、主句中、主句后,而which引導的非限制性定語從句一般放于主句后或句中。

as常與從句中的know,see, hear,expect等動詞連用,也常用于as often happens,as is often the case(常有的事)等句子中;而which一般不用于以上情況。

as有“正如”的含義,which沒有此含義。如:

As is well known,Shanghai is a big city

Some of the roads were flooded which made our journey more difficult

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關系代詞who,whom,whose, whichas能引導非限制性定語從句,而that不能;非限制性定語從句中即使缺賓語,引導詞也不能省略;關系副詞whenwhere能引導非限制性定語從句,而why不能。如:

Abraham Lincolnwho led the United States through the Civil War years,was shot on April 141865

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以上就是有關選擇定語從句的引導詞的技巧的內容了。希望能給大家?guī)硐鄳膸椭矚g就趕快收藏起來吧~