非限制性定语从句
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。
非限制性定语从句
(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.
非限制性定语从句知识点总结
非限制性定语从句知识点总结非限制性定语从句是英语语法中的一个重要知识点，对于准确、丰富地表达语言有着重要作用。
接下来，让我们系统地了解一下非限制性定语从句的相关内容。
一、非限制性定语从句的定义非限制性定语从句是对先行词进行补充说明的从句，它与先行词的关系不是十分紧密，即使去掉从句，主句的意思仍然完整。
它与限制性定语从句的一个重要区别在于，非限制性定语从句在先行词和从句之间通常用逗号隔开。
例如：“My father, who is a doctor, works very hard”在这个句子中，“who is a doctor”就是一个非限制性定语从句，先行词是“my father”。
如果去掉这个从句，“My father works very hard”这个主句的意思仍然清晰完整。
二、非限制性定语从句的引导词1、关系代词（1）which：which 可以指代物，在从句中作主语、宾语等成分。
例如：The house, which was built in 1980, needs repairing （which 指代“the house”，在从句中作主语）（2）who：who 指代人，在从句中作主语。
例如：Mr Smith, who has just come from abroad, is very kind （who 指代“Mr Smith”，在从句中作主语）（3）whom：whom 指代人，在从句中作宾语。
例如：The girl, whom I met yesterday, is very friendly （whom 指代“the girl”，在从句中作宾语）（4）whose：whose 可以指代人或物，在从句中作定语。
例如：The boy whose father is a teacher studies very hard （whose 指代“the boy”的，在从句中作定语）2、关系副词（1）when：when 在从句中作时间状语。
英语中限制性定语从句和非限制性定语从句
英语中限制性定语从句和非限制性定语从句定语从句可分为限制性和非限制性两种：1．限制性定语从句(Restrictive attributive clauses)：限制性定语从句，使所修饰的词表示一个特定的人或东西，如果去掉它，那个词就失去意义，句子就不能成立或不完整：Any one who leaves litter in these woods will be prosecuted．谁要是在林中乱扔垃圾将受到指控。
这句话如把who引起的定语从句去掉，句子就不能成立。
上节例子中的定语从句大部分都是限制性定语从句。
只有在这种定语从句中，关系代词才有可能省略。
2．非限制性定语从句(Non—Restrictive Attributive Clauses)：有些定语从句只对某个词作进一步的说明，例如：She was married to Tony, who was also a student．这里who引起的就是一个非限定性定语从句，拿掉之后句子还能成立。
在一般情况下，非限制性定语从句都由一个逗号把它和句予的其它部分分开，在译成汉语时多译成一个并列句。
下面例句中部包含有非限制性定语从句：The note was left by Jim,who was here a moment ago．这个条子是吉姆留的，他刚才来过。
She introduced me to her husband，whom I hadn’t met before．她把我介绍给她丈夫，这人我以前没见过。
This is George，whose class you will be taking．这是乔治，你将接他的班。
I have many friends,some of whom were painters．我有许多朋友，其中有些是画家。
She was very fond of speaking French,which indeed she spoke well．她很喜欢讲法语，而且讲得确实很好。
非限制性定语从句
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
什么是非限制性定语从句
什么是非限制性定语从句定语从句有限制性和非限制性两种。
限制性定语从句是先行词不可缺少的部分，去掉它主句意思往往不明确；非限制性定语从句是先行词的附加说明，去掉了也不会影响主句的意思，它与主句之间通常用逗号分开，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。
非限制性定语从句可以简单理解为就是没有紧跟在修饰对象（即先行词）之后的定语从句，与限制性定语从句刚好相反。
也就是说，先行词和非限制性定语从句之间常被逗号或是其它语句部分隔开，而没有紧密连接在一起。
需要注意的是：1)引导词that(关系代词)和why(关系副词)一般不用于引导非限制性定语从句。
2)引导词which(关系代词)在引导非限制性定语从句时，不仅可以指代主句的某部分内容，还可以用来指代整个主句。
具体示例如下：（下划线部分是非限制性定语从句；加粗字体是该定语从句的修饰对象，也就是先行词。
）例1：I am looking for a watch, which Jason bought me.例2：The puppy peed in his arms, which made us laugh.例3：Penny, who used to be a waitress, becomes a successful saleswoman.例4：Many people witnessed the accident, some of whom called the police.例5：Jacob is the silent boy standing in the back, whose hair is black and straight.例6：He realized the days were all over when they could talk everything to each other.例7：She wandered in the school alone and aimlessly, where they last met.值得注意的是，由于定语从句的本质是形容词，通常只起到修饰作用，所以定语从句本身一般不会对主句的完整性产生任何影响。
非限制性定语从句
非限制性定语从句1. 定义非限制性定语从句（Non-restrictive Relative Clauses）是指用来修饰一个名词或代词，且不对其进行限定的定语从句。
这种从句通常提供一些额外信息，而不是对名词或代词进行修饰、定义或区分。
非限制性定语从句和限制性定语从句的区别在于非限制性定语从句用逗号或破折号将其与主句分隔开来，而限制性定语从句则不用分隔符。
例如：•限制性定语从句：The book that I borrowed last week was very interesting.•非限制性定语从句：My friend, who is a doctor, came to visit me.非限制性定语从句通常用来提供额外的信息，使得整个句子更加丰富和具体。
2. 结构非限制性定语从句的结构相对简单，通常由关系副词（如where, when, why）或关系代词（如who, whom, which）引导，并且使用逗号或破折号将其与主句分隔开来。
以下是一些常见的关系代词和关系副词：•关系代词：who, whom, whose, which, that•关系副词：where, when, why例如：•关系代词引导的非限制性定语从句：My brother, who is a teacher, lives in London.•关系副词引导的非限制性定语从句：I still remember the day, when we went to the beach.3. 示例以下是一些示例，以帮助读者更好地理解非限制性定语从句的用法和作用。
1.This is my father, who is an engineer.2.The house, which was built in the 19th century, is now a museum.3.She loves music, which is why she plays the piano every day.4.The dog, whose tail is wagging, seems very happy.5.Tom finally got the job, which he had been dreaming of.4. 注意事项在使用非限制性定语从句时，需要注意以下几点：•逗号或破折号：非限制性定语从句通常使用逗号或破折号与主句分隔开来，这有助于读者更好地理解句子的结构和意思。
非限制性定语从句
• (3)He is against the idea, as can be expected. • (4)He has to work on Sundays, which he doesn’t like.
• 5)She remarried, as we had expected.
• (6)She remarried, which we unexpected.
• Our teacher, who is getting old，will soon retired.
They cut open the boot of the man, whose leg was broken.
名师伴你行
2.由介词+which和介词+whom等引导非 限制性定语从句：
Here are players from Japan, some of (whom ) are our old friends.
• • • • • •
在非限制性定语从句中 1. 不能用that 2关系代词做宾语时不能省略。 3 whom 在从句中作宾语时不能用who或 that代替。 4 可以修饰整个句子，有逗号隔开，只 能由which或as引导
• 5. 在翻译时，限句常译为定语， 非限句常译为并列句或状语从句。
名师伴你行
名师伴你行
限制性定语从句是先行词不可缺少的 定语，而非限制性定语从句只是附加 说明，如果去掉，主句意思仍然清楚。 非限制性定语从句用逗号与主句隔开。
1.由which, who, whom, whose, where, when等引导：
•
Football, which is a very interesting game, is played all over the world.
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非限制性定语从句定义：1.非限制性定语从句只是对主句内容，或是先行词的补充，解释或是附加说明。
主句与先行词或是从句之间一般用_____ 分开，常常单独翻译。
没有它，主句意思仍然完整。
2.引导非限制性定语从句的关系代词有as, __________, who, whom, whose等，作定语从句的主语，宾语，表语及定语。
关系副词有__________, ________。
[练习]用下列引导词填空（which, when, who, where, as）：1.The book, __________ he lost yesterday, has been found.2.My brother, __________ lives in New York, has six children.3.__________ you know, I don’t like drinking or smoking.4.We’ll finish this term in July, __________ we will be free.st Sunday they reached Nanjing, __________ a meeting was to be held.[小结] ，That和_______不可引导非限制性定语从句。
(2) 定语从句的省略This is the book __________ he lost yesterday.（这就是他昨天丢的那本书。
）这是一个（限制性/非限制性）定语从句，先行词__________在定语从句中作__________，引导词可以是__________，__________，或是可以__________。
【小结】⑴在限制性定语从句中，当关系代词在从句中作_____语时，关系代词可以省略。
⑵定语从句可简化为分词短语，主动用现在分词，被动过去分词。
（3）考点⑴which 与as 引导定于从句都可以指代整个一句话。
区别:①位置as引导从句位置比较灵活可前，中，后；而which只能放在_____面②意思as正如...，正像...; which这一点,这件事③搭配前面有the same , such，as时，引导定语从句的关系代词用as，不用which。
Air, ______ we know, is a gas.He changed his mind, ________(and this, and that)made me very angry.I have never heard such stories ________ he tells.⑵some/many/(a) few/(a) little/ both/none/ two(基数词) of which /whomI read some books, three of ______ are yellow with years.There are forty students in our classes,most of _______ are from the south.A.asB.whichC.whoD.that（3）定语从句的转化①.He is a good boy with whom you can work. →He is a good boy _____with.A.to workB.workingC.worked②.The train that leaves from Luonan goes to Xi’an.→The train ______ from Luonan goes toXi’an.A.to leaveB.leavingC.left③.The house which was damaged in the fire will be rebuilt soon. →The house _____ in the fire will be rebuilt soon.A.to damageB.damagingC.damaged【注意1】观察下面两句话有什么区别，并翻译He asked me a question which was about my study at school.______________________________。
（如果去掉后面的定语从句，句子的意思完整清楚吗？）This is my motorbike, which was sent to me by my uncle.______________________________。
（去掉后面的定语从句对句子的意思有影响？）(2) 定语从句的省略This is the book __________ he lost yesterday.（这就是他昨天丢的那本书。
）这是一个（限制性/非限制性）定语从句，先行词__________在定语从句中作__________，引导词可以是__________，__________，或是可以__________。
专项练习1.After living in Paris for fifty years he returned to the small town __________ he grew up as a c hild.A.whichB.thatC.whereD.when2.Carol said the work would be done by October, __________ personally I doubt very much.A.itB.thatC.whenD.which3.Dorothy was always speaking highly of her role in the play, __________, of course, made the ot hers unhappy.A.whoB.whichC.thisD.what4.__________ is known to everybody, the moon travels round the earth once every month.A.ItB.AsC.ThatD.What5.The film brought the hours back to me __________ I was taken good care of in that far-away vi llage.A.untilB.thatC.whenD.where6.__________ is mentioned above, the number of the students in senior school is increasing.A.WhichB.AsC.ThatD.It7.In the office I never seem to have time until after 5:30 p.m., __________ many people have got home.A.whose timeB.thatC.on whichD.by which8.All of the flowers now raised here have developed from those __________ in the forest.A.once they grewB.they grew onceC.they once grewD.once grew9.He made another wonderful discovery, __________ of great importance to science.A.which I think isB.which I think it isC.which I think itD.I think is10.He was very rude to the Customs officer, __________ of course made things even worse.A.whoB.whomC.whatD.which11.Recently I bought an ancient Chinese vase, __________ was very reasonable.A.which priceB.the price of whichC.its priceD.the price of whose12.He’s got himself into a dan gerous situation __________ he is likely to lose control over the pla ne.A.whereB.whichC.whileD.why13.I can think of many cases __________ students obviously knew a lot of English words and expr essions but couldn’t write a good essay.A.whyB.whichC.asD.where14.The gentleman ________ you told me yesterday proved to be a thief. A.who B.about whomC.whomD.with whom15.It was an exciting moment for these football fans this year, __________ for the first time in ye ars their team won the World Cup.A.thatB.whileC.whichD.when16.The result of the experiment was very good, __________ we hadn’t expect.A.whenB.thatC.whichD.what17.Have you seen the film Titanic, __________ leading actor is world famous?A.itsB.it’sC.whoseD.which18.John said he’d been working in the office for an hour, __________ was true.A.heB.thisC.whichD.who19.Is this the reason __________ at the meeting for his carelessness in his work?A.he explainedB.what he explainedC.how he explainedD.why he explained20.The famous basketballer, __________ tried to make a comeback, attracted a lot of attention.A.whereB.whenC.whichD.who21.We are living in an age _______ many things are done on computer.A.whichB.thatC.whoseD.when22.We will be shown around the city: schools, museums, and some other places, __________ other visitors seldom go.A.whatB.whichC.whereD.when23.York, __________ last year, is a nice old city.A.that I visitedB.which I visitedC.where I visitedD.in which I visited24.Luckily, we'd brought a road map without __________ we would have lost our way.A.itB. thatC.thisD.which25.The journey around the world took the old sailor nine months, __________ the sailing time was 226 days.A.of whichB.during whichC.from whichD.for which26.The factory produces half a million pairs of shoes every year, 80% __________are sold abroad.A.of whichB.which ofC.of themD.of that27.There are two buildings, __________stands nearly a hundred feet high. (2004湖北卷)A.the largerB.the larger of themC.the larger one thatD.the larger of which28.The English play __________ my students acted at the New Year’s party was a great success.A.for whichB.at whichC.in whichD.on which。