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非限制性定语从句讲解          【字体:
非限制性定语从句讲解
作者:yang wu    文章来源:本站整理    点击数:    更新时间:2007-4-5

非限制性定语从句讲解

一、限制性定语从句与非限制性定语从句

  定语从句可分为限制性定语从句和非限制性定语从句。顾名思义,限制性定语从句是不能从主句中拿掉的,否则剩下的部分就会失去意义,不能成立,或意思不清。如:

  This is the place where I was born 和 Anyone who leaves last please turn off the lights 这两个句子,如果拿掉其中定语部分,剩下的 This is the place 和 Anyone please turn off the lights 等会让人不知所云,甚至显得很荒谬。而非限制性定语从句则不然,它只对所修饰的词作一种补充说明,先行词不需限定,意义自明,主句和从句在意义上是相对独立的。如:

  (1) I decided to buy a birthday present for my mother, who lives alone in the countryside.

  (2) He said he would come to my house to see me tomorrow afternoon, when I will have some other friends to play together.

  句(1)中, mother 不说自明,无需区别。除非有特殊情况,有必要加以区别时,才须用限制性定语从句。

  句(2)中, tomorrow afternoon 意义明确,不需用限定词修饰。

  二、非限制性定语从句关系代词的选用

  在非限制性定语从句中不能使用 that 为关系代词,而只能 who , whom 或 whose 等指人,用 which 指物或事。指时间和地点时,从句分别可以由 when 和 where 引起。如:

  (1) The leader of the team is a 44-year-old Frenchman, whose wife is also a team member.

  (2) The city he refers to is Mijas, which is about 120 km from here.

  (3) I’m to fly to Kunming, where it is warm in this season.

  三、几种结构特殊的非限制性定语从句

  1. which 可以引导一个修饰整个句子的非限制性定语从句,其意义相当于 and this 或 and that .如:

  (1) They have again invited me to visit their country, which is very kind of them.

  (2) Some bikes are made of plastic, which makes them very light.

  2. as 可以引导一个非限制性定语从句,常常有“正如……”的意思。这种定语从句既可置于主句之前,也可置于主句之后。如:

  (1) As is known to all, water is an important kind of natural resource.

  (2) People in this country are not so expressive, as is often the case in Britain.

  非限制性定语从句,就其意义来说,在结构上往往相当于一个并列句,但从形式上看,它与前面主句的关系比并列句要显得紧凑,而表达又比较自由。我们应学会使用非限制性定语从句,在做书面表达时,它能使你的英语文句显得流畅、地道。

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