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人教英语选择性必修第一册
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Period II
Grammar
单元语法:Non-restrictive relative clauses
(非限制性定语从句)
人教英语选择性必修第一册
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核心语法专项突破
课堂检测素养达标
课时作业巩固提升
人教英语选择性必修第一册
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核心语法专项突破¢
[语法体会]
诵读下列例句并感知加黑部分的共性
(I)[教材原文]This year's Nobel Prize in Physiology or Medicine has
been awarded to Tu Youyou(co-winner),whose research led to the
discovery of artemisinin,a crucial new treatment for malaria.
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(2)[教材原文]In the beginning,Tu Youyou went to Hainan,.where
malaria was more common,to study malaria patients.
(3)[教材原文]From their research,they discovered and tested380
distinct ancient Chinese medical treatments that showed promise in the
fight against malaria.
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(4)[教材原文]Later,the medicine was tested on malaria patients,.most
of whom recovered.
(5)[教材原文]This medicine,which was called artemisinin,s
soon
became a standard treatment for malaria.
1.第(3)向为
限制性
定语从句,中间不用逗号隔开。
2.第(1)2)(4)5)向为非限制性定语从句,中间用逗号隔开。
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[知识精要]
定语从句分为限制性定语从句和非限制性定语从句。归纳起
来,二者有以下几点不同:
人教英语选择性必修第一册
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一、作用不同
限制性定语从句与先行词的关系非常密切,是先行词不可缺少的
定语,它所修饰的词代表一个(些)或一类特定的人或物,如果删
去,全句的意思就会变得不明确。而非限制性定语从句在意义上
是先行词的一个附加修饰语,对先行词只起进一步补充说明的作
用,若把它去掉,全句意思仍然清楚。
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This is the person whom you are looking for,这位就是你在找的那个
人。
In their class there are fifteen students,who can speak English very
well.在他们班上,有15名学生,他们的英语都说得很好。
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二、形式不同
非限制性定语从句与先行词之间通常有逗号,而限制性定语从句
与先行词之间无逗号。
Beijing,which is the capital of China,.is a beautiful city.北京,中国的
首都,是个美丽的城市。(从句可有可无,从句前有逗号)
She was no longer the woman that she was.她再也不是以前的她了。
(从句不可少,从句前无逗号)
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三、含义不同
限制性定语从句有涉他性;非限制性定语从句有唯一性。
The books here which have beautiful pictures in them were written by
him.里面有漂亮图画的那些书是他写的。(书有带图画和不带图画
两类)
The books here,which have beautiful pictures in them,were written by
him.这些书是他写的,里面有漂亮的图画。(书只有一种)