非限制性定语从句
He wished to be such a man as Lei Feng was.
在the same …as结构中，as可以换成that， 但句意不一样。
This is the same book as I read last week.
这和我上周读的那本书是一样的。
This is the same book that I read last week.
他的妈妈很爱惜他,对他也很严格。
（2）先行词指人,在句中作宾语whom:
His wife, whom you met at my home, was a teacher.
他的妻子，就是你在我家遇见的那个，是一位老师。
（3）先行词指物,在句中作主语或宾语which:
Her house, which was built a hundred years ago, stood still in the earthquake. 那座房子在地震中依然耸立，它是一百多年 前建造的。 注意：无论先行词指人或者指物,在句中作 主语或者作宾语，非限制性定语从句的引 导词都不能用that。
（他还有其他的哥哥）
(2) 非限制性定语从句 His brother, who is now a doctor, always encourages him to go to college. 他的哥哥是当医生的，常鼓励他要考上大学。 （他只有一个哥哥）（“唯一”概念）
2、运用非限制性定语从句的情况
(非限制性定语从句中不用关系 词that/why；非限制性定语从句 中关系词不能省略)
Practice
1. The famous basketball star, who ___ comes from America, will visit our school soon. 2. In those days, she used to go to Mr black,with whom she had a wonderful _____ time.
Charles Smith, who was my former teacher, retired last year. 查理•史密斯去年退休了，他曾经是我的老师。 My house, which I bought last year, has got a lovely garden. 我去年买了那幢房子，它带着个漂亮的花园。
A young man had a new girl friend, whom he wanted to impress. (引导词 不可以省略)
2.当关系代词指整个主句内容时，将整个主句作为 先行词, 对其进行修饰, 用非限制性定语从句。这时 引导词用which,从句谓语动词要用第三人称单数。 A five-year-old boy can speak two foreign languages, which surprises all the people present. 一个五岁的男孩会讲两门外语，令所有在场的人感 到非常惊讶。 析：从语境可知，令所有在场的人感到惊讶的 内容是一个五岁男孩会讲两门外语这整个一件 事，因此先行词为整个主句，此时应由which 引导非限制性定语从句。
这就是我上周读的那本书
2. 引导非限制性定语从句 ,代替整个句 子，在定语从句中做主语和宾语，意 思为，“正如...一样”。它引导的句 子可在主句首、句中， 句尾。
1.as做主语
请把下面两个简单句合并为复句： 句①China is a developing country. 句②It is known to all.
1. He has told us many stories, all of which are about the famous Long Match. 2. The students of Class 1, some of whom came from Japan, went camping yesterday.
Module 2 Grammar and usage
Non-restrictive attributive clauses
非限制性定语从句
限制性定语从句的概念： 限制性定语从句对先行词起限制或修饰的作用，是先 行词在意义上不可缺少的 定语 ，如果去掉，主句的意 思就不完整或失去意义。从句和主句的关系密切，写 时不用逗号分开。
当先行词是世界上独一无二的事物、专有名词或物 主代词和指示代词所修饰时，其后的定语从句通常 是非限制性的。
3、非限制性定语从句引导词的选择：
（1）先行词指人,在从句中作主语，引导词用who:
His mother, who loves him very much, is strict with him.
ten of whom come from US. them
注意事项:
1.关系代词whom在限制性定语从句中作宾语时可用 who代替whom，但在非限制性定语从句中作宾语时 不可用who来代替。 This is the girl whom/who/that I met in the street. (引导词 可以 省略)
（4）先行词在句中作定语，无论指人或者指物, 引导词都用whose:
The girl, whose name is Kate, is the top of the students in our school. 那个女孩是我们学校最优秀的学生，她的名 字叫Kate。 The book, whose cover is red, is mine. 封面是红色的那本书是我的。
as和which引导非限制性定语从句的不同之 处在于：
as 引导的定语从句可置于句首,而which 引导的定语从句不可放在句首。
Conclusion
非限制性定语从句中通常使用 下列关系代词和副词 关系代词：which / who / whom /
whose / as
关系副词：when / 限制性定语从句中, all/ some/ one/ both/ neither/ none/ any/ either等可与 of 构 成介词词组修饰限制先行词。 如先行词指人则用whom， 如先行词指物则用which引导从句。
Correction:
1. Many students in this school, some of which are not overweight, are going on diets. whom 2. There are 54 students in my class and
例如： eg: This is the soldier who saved the boy’s life.
先行词 引导词
定语从句
非限制性定语从句的概念： 非限制性定语从句只是对先行词作些附加的说明, 如果 去掉, 主句的意思仍然清楚。和主句关系不十分密切， 从句和主句之间用逗号分开。 例如：
Rome , which is the capital of Italy, has a very long history.
罗马是意大利的首都，有着非常悠久的历史。
1、限制性定语从句和非限制定语从句的区别： 限制性定语从句常翻译为：“…的…” 非限制性定语从句常翻译为两个并列句
(1) 限制性定语从句 His brother who is now a doctor always encourages him to go to college. 他那个当医生的哥哥常鼓励他要考上大学。
The house, which we bought last month, is very nice. 这房子很漂亮,是我们上个月买的。
This is the house (which/ that ) we bought last month. 这是我们上个月买的那幢房子。
（7）如果先行词作介词的宾语 先行词指人，介词提前的结构是：介词＋whom 先行词指物，介词提前的结构是：介词＋which The girl, with whom he is familiar, is a football player. The Second World War, in which millions of people were killed, ended in 1945. 第二次世界大战造成数百万人的死亡，于1945年结 束。
（5）先行词在句中作时间状语用when：
when The sports meeting will be put off till next month， we will have made all the preparations. 运动会将被推迟到下个月，那时我们做好一切准备。 （6）先行词在句中作地点状语用where： The next day we arrived in New York, where we were interviewed on the radio. 第二天我们到达纽约，在那里我们接受了电台的采访。
6. John said he’d been working in the
office for an hour, _____ was true. which
7. As is expected, the England team __ won the football match.
Homework:
3. Xi’an, ______I visited last year, is a which nice old city. 4. He will come to see me next July, _____ he won’t be so busy. when 5. The school, where I once studied, was _____ built thirty years ago.
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.
英语非限制性定语从句
英语非限制性定语从句英语非限制性定语从句英语目前在职场中使用到的机率非常的大,可以说是职场的必备技能。
很多人在业余时间都在努力的提升商务英语能力。
下面，店铺为大家分享英语非限制性定语从句，希望对大家有所帮助！英语非限制性定语从句篇1小伙伴们都知道，在考试是一定要诚实，不可以作弊。
如果身边有其他小伙伴想铤而走险，那你该怎么劝他呢?Cheating is a dishonest behavior, which will cause serious consequences.作弊是不诚实的行为，会导致严重后果的。
这句话使用了which引导的非限制性定语从句。
既然有非限制性定语从句，肯定有限制性定语从句。
两者分别是什么样的定语从句呢?又有什么区别呢?那接下来我们就从区别入手，学习一下限制性定语从句和非限制性定语从句吧。
定语从句的基本结构为：先行词+关系代词或关系副词+从句本身。
定语从句可以是限制性的，也可以使非限制性的，它们主要有以下区别：1.结构上的区别限制性定语从句和非限制性定语从句在结构上基本相同。
在口语中，非限制性定语从句的先行词和关系代词或关系副词之间稍有停顿。
在文本中，限制性定语从句不用逗号与主句隔开，而非限制性定语从句需使用逗号和主句隔开。
例a)：I have a sister who is a doctor.(限制性定语从句)我有一个当医生的姐姐。
例b)：I have a sister, who is a doctor.(非限制性定语从句)我有一个姐姐，她是当医生的。
2.意义及功能上的区别从意义上分析，非限制性定语从句是对先行词的附加补充说明。
如果删去，不会影响主句意义的完整。
而限制性定语从句修饰和限制先行词，明确先行词内容，是先行词不可缺少的定语。
如果删去，会影响主句意义的完整。
例c)：I have an elder brother who is a teacher.(限制性定语从句)我有一个当老师的哥哥。
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
非限制性定语从句
U n i t5G r a m m a r定语从句非限制性定语从句一．概述非限制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;起前后都需要用逗号隔开..1)The other day I met Li Lei; who seemed to be very busy.不久前的一天我碰上李雷了;他好象很忙..2)His mother; who loves him very much; is strict with him. 他妈妈很爱他;对他要求很严格..非限制性定语从句和单句的比较1)He failed in the exam. _It_ made his parents angry.2)He failed in the exam; It made his parents angry.3)He failed in the exam; _which made his parents angry.二．非限制性定语从句应注意以下几点：一非限制性定语从句中的关系词：1. 关系代词如下表所示：1)The house; ______ we bought last month; is very nice.这幢房子很漂亮;是我们上个月买的..2)Miss Howe; _______you met in the library; is our new teacher.3)Yesterday I bought a T-shirt; ________only cost me 18 Yuan.4)Tom’s father; ________is over sixty; still works hard day andnight.汤姆的父亲已经六十多岁了;但他仍然从早到晚忙碌地工作..5)Li Ming; ________ mother has been ill for two days; is absent fromschool today.6)Yesterday she sold her car; _______ she bought a month ago.7)John’s wife; ____woks in Beijing ;came back home yesterday.注意：非限制性定语从句中关系代词which/whom在从句中作宾语时;不可省略..1)This book; which you can get at any bookshop; will give you all theinformation you need.这本书会给你提供所有你需要的资料;它在任何一家书店都能买到..2)This morning I met Tom; whom I hadn't seen for ages.今天早上我碰见汤姆;我很多年未见到他了..2.关系副词有when和where；关系副词why不能引导非限制性定语从句;要用for which代替..1)Yesterday Jimmy left for Canada; _______ he had stayed two years.昨天;吉米动身到加拿大去了;他曾在那儿呆了两年..2)The People’ s Republic of China was founded in 1949; _________hewas born.3)I had told them the reason; __________I didn’t attend the meeting. 二关系代词前介词的选择..1.依据定语从句中动词的习惯搭配来确定1)I bought a great many books; ______which I spent all my money thatI saved.我买了很多书;这些书花了我所有的积蓄..2)This project; _______which I have devoted lots of time; will bea great success.这项工程我投入了很多时间;肯定能成功..2.依据先行词的某种习惯搭配来确定1)I’ll never forget the time; during which I spent my childhood inthe country.我永远不会忘记我在乡村度过的童年时光..2)Her bag; in which she put all her books; has not been found.用适当的介词填空：1)In the dark street; there wasn’t a single person ___whom she couldturn for help.2)At last we found the hole in the wall _________ which the mouse gotinto the house last night.三含有“不定代词both/some/any/all/none等或基数词+of which/whom“结构的非限制性定语从句1)He has three sons; all of whom are college students.2)There are 51 students in Class Three;none of whom failed in themonthly examination last week.3)Here are the questions; some of which I thought are difficult foryou.4)Present at the meeting were almost experts on DNA; most of whom camefrom the US.出席会议的大都是DNA专家;其中大部分来自美国..5)I have three foreign teachers; two of whom are from Canada.填空：We shouldn’t spend our money testing so many people; most o f ______are healthy.小贴士此类题解题的关键是看句中的标号.. 如果是逗号;通常考虑关系词;反之;考虑人称代词..1)He has two sons. Both of ________ are teachers.2)He has two sons; both of ________ are teachers.四关系代词as的用法1.as 与which 都可以代指主句整个句子的内容;有时可以互换He is a doctor ;as/which we know from his manner.2. 区别点：A.as引导的定语从句可以放在句首;而which 则不能..B.as意为“正如……”;后面的谓语动词多是see;know;expect;say;mention;report;announce等；which意为“这一点”..1)He didn’t know French; which made it difficult for him to studyat a university in France.2)Smoking is harmful to one's health;as we know;3)As we know;more than seventy percent of the earth is covered withwater.正如我们所知;地球表面的70%以上被水覆盖..4)He came back home late;as we expected.正如我们所料;他回家晚了..注意：as的固定结构：She is late;as is often the case．她迟到了;这是经常的事Taiwan;as you know;is an inseparable part of China．你知道;台湾是中国不可分割的一部分..As is announced in the papers;our country has launched another man-madeearth satellite．报纸宣布;我国又发射了一颗人造地球卫星..I’ve never heard such a wonderful song as he’s singing.即学即练：1)The number of the students in senior high schools isincreasing;________is mentioned above;2)________is often the case with elder people;my grandma talked aboutmy new hairstyle for at least 50 minutes nonstop.比较：It is so heavy a box as no man can lift.这是一个没有人搬得动的大盒子..It is so heavy a box that no man can lift it.This is such a novel as all people;both young and old;like to read.. This is such a novel as all people;both young and old;like to read it.高考链接：1. I walked in our garden; _______ Tom and Jim were tying a big sign onto one of the trees.2. The Beatles; _______ many of you are old enough to remember; came from Liverpool.3. She was educated at Beijing University; ____ she went on to haveher advanced study abroad.4. Last week; only two people came to look at the house;_______ wantedto buy it.5. It is reported that two schools; _____ are being built in my hometown;will open next year.6. The growing speed of a plant is influenced by a number of factors;_____ are beyond our control.7. They will fly to Washington; _____they plan to stay for two or three days.8. Many children; ______ parents are away working in big cities; aretaken good care of in the village．9. Whenever I met her; _______ was fairly often; she greeted me witha sweet smile.10. As a child; Jack studied in a village school; _______is named after his grandfather.11. The settlement is home to nearly 1;000 people; many of _____ left their village homes for a better life in the city.12. Our teacher urges us to form a good habit of learning;________wethink will benefit us in the13. Remember that there is still one point________we must make clearat the conference tomorrow.14. All the neighbors admire this family;________the children andparents build up a friendly relationship.15.As to the unemployment;the government has taken a series of measuresin many areas;________;I am sure;will benefit the people out of work. 16The reason _______ he was late again was that he was caught in a traffic jam in the rush hour. 117.I hate the way _______ you talk to your mother.18.You think the reason _______ he gave is believable.19.____ is reported in the newspaper ; talks between the two countries are making progress.20. Is this museum _____they visited last month21.---- Where did you meet him first ----- It was in the hotel ＿he stayed.22. David is such a good boy _______ all the teachers like.23. A man with a bleeding hand hurried in and asked; “Is there ahospital around ______ I can get some medicine for my wounded hand ”24. They put forward a lot of plans at the meeting; but none of _______were carried out in their work.25. Sundays there were a lot of children playing in the park; ____parents were seated together joking.2014辽宁卷Dear Jeremy and Alice;Although we’ve been delighted to have you as neighbors; we’re hoping to settle something that bothers to us. In a word; your dog—Cleo. We’ve called several time about Cleo’s early morning barking. It is difficult to understan ding why she barks every minute she’s outside. The early morning barking have been disturbing us as wc arc often up all night with the baby. Beside; Cleo tends to bark a average of six hours a day. This morning she starts barking even before 5 o’clock. That is too much for us. considering how closely the houses are. We appreciate our apologies and goodwill; but we hope that you can figure a good way of settling the matter.2014陕西卷My father took me out camping for the first time when I was seven. He wanted teach me about animals; insects and trees. My uncles all come along with bows and arrows for hunting.One evening at sunset; we sat by the fire; have our barbecue. Just then a bird was flying over us. My uncles immediate jumped up and shot their arrows on the bird. Neither of the arrows hit the target.Suddenly the arrows was flying down at us from the sky — they were looked like rain We ran to escape but fortunately no one was injured.That day I didn’t learn much about animals; insects or trees; but I learnt a impressive lesson about gravity答案去掉us前面的to试题解析动词bother困扰;麻烦；这是一个及物动词;后面直接加宾语;不需要使用介词to..2. 答案time改为times试题解析本句中的time表示“次数”;是一个可数名词;前面有several修饰;说明使用复数形式..3. 答案understanding改为understand试题解析本句中的it是一个形式主语;真正的主语是后面的不定式结构to understand why….；不定式结构中to后面要接动词原形..4. 答案have改为has试题解析本句的主语是单个的动名词短语the early morning barking;做主语时;谓语动词要使用单数形式..5. 答案beside改为beside试题解析介词beside以为“在…旁边”；本句中的besides是一个副词“而且”;单独使用;表示递进关系..6. 答案bark后面的a改为an试题解析名词average是以元音开始的单词;所以使用an修饰average of…..7. 答案starts改为started试题解析本句叙述的是具体早晨发生的事情;也就是过去所发生的事情;所以使用一般过去时started..8. 答案closely改为close试题解析本句how close the houses are中的close本应该是在系动词are 的后面;构成系表结构are close..Closely是一个副词;副词通常不能和许系动词连用构成系表结构的..9. 答案our改为your试题解析句义：我们很欣赏你的歉意..根据后面的you可知对方是来道歉的..10. 答案figure后面加out试题解析固定搭配figure out找到;算出..我们希望你能够找到一个解决问题的好方法..1.答案wanted后面加to试题解析固定搭配want to do sth想要做某事；to是不能省略的;不定式to do sth作为want的宾语..2. 答案come改为came试题解析根据本文第一句可知讲述的是过去发生的事情;所以使用一般过去时;所以使用came..3. 答案have改为having试题解析本句中动词have与句子主语we构成逻辑上的主动关系;所以使用现在分词在句中做状语..4. 答案immediate改为immediately试题解析本句中应该使用副词immeately来修饰谓语动词jumped;在句中做状语..形容词immediate不能做状语..5. 答案on改为at试题解析固定搭配shoot..at…不能使用介词on..At表示瞄准的对方或者方向..6. 答案Neither改为none试题解析代词neither表示两者都不…；而本句中没有提及两者;应该是有很多的鸟..故使用none表示三者或者三者以上的全部否定..7. 答案was改为were试题解析本句的主语是复数名词arrows;所以谓语动词使用复数形式were..8 答案去掉were或者looked试题解析本句是指箭如雨下;要么使用look like看起来像..；要么使用be like…像…一样..9. 答案but改为and试题解析我们四处逃跑;很幸运的是没有人受伤..根据上下文语境可知表示并列关系..10. 答案a改为an试题解析后面的形容词impressive是以元音开始的;所以使用an..。
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。
非限制性定语从句知识点总结
非限制性定语从句知识点总结在英语语法的学习中，非限制性定语从句是一个重要且相对复杂的知识点。
为了帮助大家更好地理解和掌握这一内容，下面将对非限制性定语从句的相关要点进行详细总结。
一、非限制性定语从句的定义非限制性定语从句是一种对先行词进行补充说明的从句，它与先行词的关系较为松散，即使去掉从句，主句的意思仍然完整。
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”。
即使去掉这个从句，“My father works very hard”这个主句的意思也是清晰完整的。
二、非限制性定语从句的特点1、逗号分隔非限制性定语从句与先行词之间通常用逗号隔开，这是其与限制性定语从句在形式上的一个明显区别。
比如：“The house, which was built in 1980, is very old”2、先行词可以是整个主句非限制性定语从句的先行词不仅可以是一个名词或代词，还可以是整个主句。
例如：“He failed the exam, which made his parents very disappointed” 这里先行词就是“He failed the exam”整个句子。
3、关系词的使用（1）关系代词：which、who、whom、whose 等。
which 指代物，在从句中可作主语、宾语等。
who 指代人，在从句中作主语。
whom 指代人，在从句中作宾语。
whose 表示“……的”，在从句中作定语。
（2）关系副词：when、where 等。
when 指代时间，在从句中作时间状语。
where 指代地点，在从句中作地点状语。
需要注意的是，非限制性定语从句中不能使用 that 作为关系词。
三、非限制性定语从句中关系词的具体用法1、 which 的用法（1）which 可以指代主句中的某个名词，也可以指代整个主句。
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.
非限制性定语从句
• Her brother, who is now a soldier, always encourages her to go to college. • 她哥哥是当兵的，他总是鼓励她上大学。 • （意含： 她只有一个哥哥。）
• . All the books that have pictures in them are well written.
C • 例4 I had told them the reason ______ I didn’t attend the meeting. •
• •
A. when C. why
B. which D. for that
• 解析： 例3意为：“我早已把理由告诉他们， 于是我没有出席会议。”先行词为reason 时，非限制性定语从句应用for which引导， 故选A。
C • 5．Write a letter to a friend，____has some difficulties with his studies． M • 6．There are four rooms in the house，____ is a drawing room． H • 7．We will move into the new house next week，____it will be completed． A • 8．When lost in work，he often was，____he would forget all about eating and sleeping．
所有里面带插图的书都写得很好。 （意含： 不带插图的书则不一定写得好。）
• All the books, which have pictures in them, are well written.