非限制性定语从句

非限制性定语从句非限制性定语从句根据定语从句与先行词的关系，定语从句可分为限制性定语从句及非限制性定语从句。

限制性定语从句紧跟先行词，主句与从句不用逗号分开，从句不可省去；非限制性定语从句主句与从句之间有逗号分开，起补充说明作用，如省去，意思仍完整。

以下是店铺整理的非限制性定语从句，欢迎大家借鉴与参考，希望对大家有所帮助。

非限制性定语从句 1非限制性定语从句：即非限定性定语从句，起补充说明作用，缺少也不会影响全句的理解，在非限定性定语从句的前面往往有逗号隔开，如若将非限定性定语从句放在句子中间，其前后都需要用逗号隔开。

由as, which 引导的非限定性定语从句，as和which可代整个主句，相当于and this或and that。

As一般放在句首，which在句中。

使用规则及注意事项：1、which引导的非限定性定语从句是用来说明前面整个句子的情况或主句的某一部分。

2、as有时也可用作关系代词。

as引导非限制性定语从句，若as在从句中作主语，其引导的句子可以放在句首，也可以放在句中。

但which引导的非限制性定语从句只能放句中。

例句：As is reported in the newspaper, some artistic treasures (艺术珍品) will be on show at the exhibition on the weekend.3、在非限定性定语从句中，关系词不能用that。

限制性定语从句和非限制性定语从句有四大区别：1在句中作用不同限制性定语从句对被修饰的先行词有限定制约作用，使该词的含义更具体，更明确。

限制性定语从句不能被省略，否则句意就不完整。

非限制性定语从句与先行词关系不十分密切，只是对其作一些附加说明，不起限定制约作用。

如果将非限制性定语从句省去，主句的意义仍然完整。

2外在表现形式不同限制性定语从句因与先行词关系密切，所以不可以用逗号将其与主句隔开;而非限制性定语从句与先行词关系不十分密切，所以可用逗号将其与主句隔开。

(1)限制性定语从句和主句的关系十分密切， 若省去，主句的意思就不明确。主从句之间 不用逗号隔开。而非限制性定语从句则不然。 试比较：
This is the best book that I have read. This is a good book, which is easy to understand.
(2) as多用于下列习惯用语中 as anybody can see 正如人人都能看到的那样 as is well known = as is known to all 众所周知 as we had expected 正如我们所预料的那样 as often happens 正如经常发生的那样 as has been said before 如上所述 as is mentioned above 正如上面提到的
(5)关系代词在非限制性定语从句中作介词的宾语 时，介词前可以有被介词短语所修饰的词。如： He has two daughters, the elder of whom is married. (6)在非限制性定语从句中，关系代词还可以 作介词的宾语。 He is ill, in spite of which he keeps on studying.
3. 关系代词as, which引导非限制定语从句时的区别
(1)as和which都可指主句的整个意思，而不是主 句中的某一个词。as引导的非限制性定语从句， 既可在主句前，又可在主句后，有时还可插入主 句中；而which引导的非限制性定语从句一般置于 主句之后。如： The weather turned out to be very good, which was more than we could expect. As is known to all, the moon travels round the earth.

定语从句限定性定语从句,顾名思义,是对先行词从本质或特征上进行限制的一种定语从句，它所修饰的词代表一个(些)或一类特定的人或事、物。

非限定性定语从句,它只对所修饰的词作进一步的说明,去掉之后并不影响句子的整个含义。

在形式上,非限定性定语从句与主句之间通常用逗号隔开。

1. 引导非限定性定语从句时,只能用which(不用that)。

Football, which is a very interesting game, is played all over the world.2. 引导非限定性定语从句的which可以指代前面的先行词,也可以指前面整个句子的含义。

Eg：All the books there, which have beautiful pictures in them, were written by him.3. 在限定性定语从句中作宾语时,引导词可以省略,但引导非限定性定语从句的关联词不能省。

4.表示"正如"的含义时,通常用as引导非限定性定语从句,也可用which引导;但置于句首时,只能用as引导。

China has basically succeeded in defeating SARS, which / as we have expected.正如我们所预料的那样,中国已基本上战胜了“非典”。

As is well known to everybody, T aiwan is an inseparable part of China.众所周知,台湾是中国不可分割的一部分。

5. 指人时主格用who,宾格用whom,物主格用whose(也可指物)Miss Howe, whom you met in the library, is our new teacher.The Arabs, who are famous for their horses and camels, use these animals for work and in sports.6.关系副词when(指时间), where (指地点)也可以引导非限制性定语从句(注意关系副词why不能引导非限制性定语从句。

a successful business. 5. Some pre-school children go to a day center, _____they learn simple
games and songs. 6. He is absorbed in work, ____he often was.
hometown，will open next year. 3. We shouldn’t spent our money testing so many people, most of
_____are healthy 4. Chan’s restaurant on Baker Street, ____used to be poorly run, is now
(2)Xi’an, which we visited last year, is really a beautiful city.
(3) My favorite season is autumn, when we celebrate the Mid-Autumn
Festival.
2. 在限制性定语从句中，作宾语的关系代词可以省略，但在非限制性 定语从句中，作宾语的关系代词不能省略。如：
(1)His father, who is a famous actor, will go to Canada next week.
(2)I was born in Beijing, which is the capital of China. 2. 当先行词被指示代词、形容词或物主代词修饰时，要用非限制性定 语从句。如：
练习： 1. His movies won several awards at the film festival, _____was beyond