Question

限制性定语从句和非限制性定语从句的区别

Answer 1

定语从句的分类：
限制性定语从句和非限制性的定语从句
限制性定语从句不用逗号与主句分开，对所修饰的词起特指或限定的作用，去掉后意思不完整或不太清楚。翻译成中文时，一般把定语从句翻译在先行词之前。
引导限制性定语从句的关系代词有who, whom, whose, that, which, of which和关系副词when, where, why等。
eg. This is the man who helped me.
I was the only person in our office that was invite to the palace ball.
非限制性的定语从句和主句之间往往用逗号分开，只对被修饰的词语或主句起补充说明的作用，去掉后对句意影响不大。翻译时通常把定语从句翻译在先行词后边，作为附加说明。
引导非限制性定语从句的关系代词有who,whom, whose, which, as和关系副词when, where，一般不用that 引导。
eg. I have two sisters, who are both doctors.
Last Sunday they reached Shanghai, where a meeting was holding.

定语从句的考查热点
1.间隔式定语从句
定语从句一般紧跟在先行词之后，但定语从句先
行词之间有时会插入别的成分，构成先行词与定
语从句的隔离。
eg. This is the article written by him that I spoke to you about.
He was the only person in this country that was invited.
(1). 因定语从句过长，为使句子保持平衡，通常定语从句和其所修饰的名词或代词分开。
eg. The film brought the hours back to me when I was taken good care of in that faraway villiage.
(2). 在定语从句中使用“插入语”以增加句子的灵活性。
eg. Kate was always speaking highly of her role in the play, which, of course, made the others unhappy.
The pen I thought I had lost is on my desk, right under my nose.
2.定语从句中的谓语动词与先行词保持一致。
当引导定语从句的关系代词在从句中做主语时，定
语从句的谓语动词的数的形式应与先行词保持一致。
eg. I, who am your classmate, will try my best to help you.
He, who is your classmate, will try his best to help you.
注意句式：
one of + 复数名词+关系代词+复数动词
the (only/very) one of +复数名词+关系代词+单数动词
He is one of the students who have made great progress.
Tom is the only one of my friends who has been abroad.