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定语从句之专题一:从定语从句原理可以推导出定语从句的绝大部分规则
作者:高  伟  文章来源:本站原创  点击数  更新时间:2017-07-20  文章录入:admin  责任编辑:admin

 

5.从定语从句原理可以直接推导出本节的第二至五小节的绝大多数内容。下图,

  .定语从句原理  

可以推导出

.who(m)/which引导定语从句

  .“介词+who(m)/which”引导定语从句

.whose引导定语从句

.when/where/why引导定语从句

 

链接:由于定语从句是由简单句变来的,所以,引导词在定语从句中所作成分与疑问句中所作成分基本相同。个别例外情况,在下文中会有专门讲解。如,①who(m)不能在定语从句中作表语,见第四节.六。②how不能引导定语从句,见第四节.五。由于what不能引导定语从句,所以,该用what()时,改用which/that。见第一节..引导词总表。

课外阅读:为什么定语从句是三大类从句(名从/定从/状从)中最难的?都是先行词惹的祸。

把定语从句与名词性从句相比:相同点。名词性从句与定语从句都是由特殊疑问句变来的。本是同根生。所以,代词/副词在这两种从句中所作成分相同。不同点。定语从句前有先行词。即,先行词+定语从句(定语从句=引导词+陈述句语序)。不但定语从句修饰先行词,而且定语从句的引导词要对先行词进行复指。正是因为引导词对于先行词的复指,才有第四节..引导词的代替和省略;正是因为定语从句与先行词之间的远近关系,才有第五节(定语从句的分类)。(名从和状从就没有这些事儿。)

 

. who(m)/which引导定语从句

如上页的先行词与引导词总表所示,who(m)指人,which指物,that指人或物,它们在定语从句中作主语/宾语/表语。(链接:关于that引导定语从句以及that/who(m)/which对比,将在本节第六小节集中讲解。)

1. who(m)/which引导定语从句。

Lining now is a successful entrepreneur.  Lining used to be a player.

→Lining who used to be a player now is a successful entrepreneur. 

●The 17th Asian Games was held in Incheon.  Incheon lies in the northwest of South Korea.

→The 17th AG was held in Incheon which lies in the northwest of SK.

2.引导词在定语从句中作主语时,从句的谓语应该与先行词保持一致。

这是因为,who/which/that等本身既可能是单数又可能是复数,如,who is/arewhich is/are,或that is/are,从引导词本身看不出来单/复数,但是它们复指前边的先行词(引导词=先行词),所以,此时可以从先行词看引导词到底是单数还是复数。如,

People who are nearsighted can only see things that are very close to their eyes.

近视的人只能看到离他们眼睛很近的东西。

I, who am your teacher, will try my best to help you.是你的老师,将全力帮你。

He is one of the students who have passed the exam.他是通过考试的一个学生。

one of+名词复数+who+谓语复数。主谓一致,可参看第二章第六节。)

He is the only one of the students who has passed the exam.他是唯一通过考试的学生。

the only one of+名词复数+who+谓语单数。)

 

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