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最新中考英语定语从句专项训练及答案一、定语从句1．A Wechat（微信）is an invention ________can help people talk to friends，share photos，ideas and feelings freely .A．which B．who C．/【答案】A【解析】试题分析：句意：微信是能帮助人们和朋友自由交谈，分享照片，想法，感情的一种发明。
定语从句用来充当句中定语的成分，被修饰的名词叫先行词，连接主从句的是关系词。
关系词分：1关系代词：who , whom , whose , which , that。
2关系副词：where,when why 等。
一般的who 用于指代人的先行词，which 用来指代物的先行词，that既可指认又可指物。
根据先行词是物，引导词做主语不能省略，故选A。
考点：考查定语从句的用法。
2．Do you have books about famous scientists ________ are suitable for children to read? A．what B．which C．who D．whom【答案】B【解析】【详解】句意“你有关于科学家方面的适合小孩子读的书吗？”。
本题考查定语从句。
A.定语从句中没有what；B.which指物，在从句中作主语和宾语；C.who指人，在从句中作主语和宾语；D.whom指人，在从句中作宾语。
根据句意可知，先行词为books指物，在从句中作主语，故选B。
3．Linda will never forget the words her father told her.A．that B．who C．where D．what【答案】A【解析】【详解】句意：Linda将永远不会忘记她父亲告诉她的这些话。
that关系代词，引导定语从句，先行词可以为人或物；who关系代词，引导定语从句，先行词为人；where是关系副词，引导定语从句，在从句中作地点状语；what什么，常引导名词性从句，不能引导定语从句。
（英语）中考英语总复习--英语定语从句含解析一、定语从句1． Running man is a very relaxing TV program_______is hot among the young people. A．what B．which C．who D．whom【答案】B【解析】【分析】【点评】定语从句要注意先行词是人还是物，从而选出合适的关系代词．【详解】试题分析：定语从句中先行词为物，关系代词用that或which．what不引导定语从句，who/whom的先行词是人；根据 a very relaxing TV program可知，先行词是物，故选B．2．—Have you watch the TV play ＂ In the name of people＂（人民的名义）?—Yes. It’s the most popular play _________ shows our Party’s trying to struggle against corruption（反对腐败）.A．where B．whether C．that D．who【答案】C【解析】句意：——你看电视剧“人民的名义”了吗？——是的，它是表现我们的党尽力反对腐败的最受欢迎的电视剧。
这是一个定语从句的句子，先行词是play，所以引导词用that/which；故选C3．I like listening to music______ can touch the heart of people.A．that B．who C．where D．what【答案】A【解析】【详解】句意：我喜欢听能触动人心的音乐。
考查定语从句引导词。
what不引导定语从句，可排除。
that可指人指物；who指人；where指地点。
本句先行词music是物，引导词做从句的主语，需用that引导；根据句意语境，可知选A。
4．---How do you like the Sun Island？Is it worth visiting?---Sure. It’s one of the best places I have ever been to.A．which B．that C．who【答案】B【解析】句意：----你觉得太阳岛怎么样？值得一游吗？----当然。
【英语】中考英语定语从句专项练习含解析一、定语从句1．Everyone ____ has been to Shanghai says it is a modern city.A．why B．whose C．who D．which【答案】C【解析】【分析】【考点定位】：考查定语从句。
【详解】试题分析：句意：去过上海的每个人都说它是一个现代化的城市。
why为什么；whose谁的；who谁，可以引导定语从句，主语是人；which哪一个，可以引导定语从句，先行词指物。
根据句意可知，这里考查的是定语从句，先行词是Everyone，指代人，根据句意可知选C。
2．I like listening to music______ can touch the heart of people.A．that B．who C．where D．what【答案】A【解析】【详解】句意：我喜欢听能触动人心的音乐。
考查定语从句引导词。
what不引导定语从句，可排除。
that可指人指物；who指人；where指地点。
本句先行词music是物，引导词做从句的主语，需用that引导；根据句意语境，可知选A。
3．She is talking about the school and teachers ______ we visited last month.A．who B．which C．where D．that【答案】D【解析】句意：她正在谈论关于我们上个月参观的那个学校和那里的老师。
who引导定语从句，修饰人，作主语或宾语；which引导定语从句，修饰事物，作主语或宾语；where引导定语从句，修饰地点名词，作状语；that引导定语从句，修饰人或事物，作主语或宾语。
根据the school and teachers可知此处既修饰人，又修饰事物，故用that引导定语从句，故选D。
4．The We Chat is an invention can help people talk to friends, share photos, ideas and feelings freely.A．which B．who C．whose D．/【答案】A【解析】试题分析：句意：微信是可以帮助人们和朋友自由地聊天，分享照片，想法和感觉。
人教版中考英语专项训练定语从句的用法归纳练习一、定语从句1．Being blind is something _________ most people can’t imagine.A．who B．what C．that D．whom【答案】C【解析】先行词是something，关系代词用that。
【考点】定语从句引导词。
2．The green tea _____ grows in South China is quite popular in China.A．which B．when C．where【答案】A【解析】试题分析：句意：在中国南部生长的绿茶在中国非常受欢迎。
which 引导定语从句的关系代词，先行词是物，which在定语从句中做主语或宾语；when关系副词，指时间；where 关系副词，指地点。
根据句意可知，这里定语从句的先行词是The green tea，并且定语从句中缺少主语，故应选A。
考点：考查定语从句的关系代词。
3．“Underground” is the only word in the English language _____ beg ins and ends with the letters “und”.A．what B．that C．who D．whom【答案】B【解析】【分析】【详解】试题分析：句意：在英语中“underground”是唯一一个开头和结尾都用字母组合“und”的单词。
此处先行词word有不定代词the only来修饰，故用关系代词that来引导。
故选B。
4． Running man is a very relaxing TV program_______is hot among the young people. A．what B．which C．who D．whom【答案】B【解析】【分析】【点评】定语从句要注意先行词是人还是物，从而选出合适的关系代词．【详解】试题分析：定语从句中先行词为物，关系代词用that或which．what不引导定语从句，who/whom的先行词是人；根据 a very relaxing TV program可知，先行词是物，故选B．5．They want to develop a kind of dog-friendly food _________ will help dog owners cool down their pets.A．who B．what C．which D．whether【答案】C【解析】考查定语从句的引导词。
人教版中考英语专项训练定语从句练习一、定语从句1．The movie ____ I have seen twice is The Wandering Earth.A．who B．which C．where D．when【答案】B【解析】【详解】句意：我看过两次的电影是《流浪地球》。
A. who谁，指人的引导词；B. which哪一个，指物的引导词；C. where哪里，指地点；D. when什么时间，指时间。
本题考查定语从句。
先行词是The movie，因此引导词用which。
故选B。
2．They want to develop a kind of dog-friendly food _________ will help dog owners cool down their pets.A．who B．what C．which D．whether【答案】C【解析】考查定语从句的引导词。
句意“他们想研制一种对狗有好处的狗粮，这种狗粮会帮助狗的主人安定他们的宠物。
”先行词food指物，排除who；what不能引导定语从句；which指物。
故选C。
3．﹣Look！This is the photo I took in Beijing World Gardening Expo（世界园艺博览会）in 2019．﹣Wow，so great！A．what B．who C．where D．that【答案】D【解析】【详解】句意：—看！这是我2019年在北京世界园艺博览会拍的照片。
考查定语从句的关系代词，what不用在定语从句中，who先行词为人，在从句中作主语或者宾语，where先行词为地点，在从句中作状语，that先行词为人或物，在从句中做主语或宾语，the photo为先行词，从句中缺宾语，句意理解为﹣﹣看！这是我2019年在北京世界园艺博览会上拍的照片．﹣﹣哇，很不错．故选D。
4． The dog _______ played with you just now is _______.A．which; mine B．which; myC．what; mine D．what; my【答案】A【解析】【详解】句意：刚才和你一起玩的那条狗是我的。
定语从句1.定义：充当定语作用的从句，用于限制、描绘或说明主句中某一个名词、代词或整个句子。
2.先行词：被定语从句修饰的对象称为先行词。
3.关系词：按定语从句与其先行词的关系，分为：限制性定语从句和非限制性定语从句。
限制性定语从句与其先行词的关系密切，其间不用逗号隔开；非限制性定语从句与其先行词的关系比较松散，其间要用逗号隔开。
5.关系代词引导的限制性定语从句关系代词除了起连接主句和从句的作用外，还在从句中充当主语、宾语、表语、定语等成分。
当关系代词作宾语时，通常可省略。
Eg:The man who/that is standing under the tree is our new English teacher.（作主语）I bought this book(which/that)I thought was interesting.（作宾语）The city is no longer the same as it was.（作表语）Bill doesn’t like the house whose window is broken.（作定语）6.关系副词引导的限制性定语从句关系副词在定语从句中作状语，分别表示时间、地点、原因等。
Eg:I still remember the day when we met for the first time.They booked the hotel where they stayed last summer holiday.The teacher didn’t accept the reason why he was late again.7.非限制性定语从句引导非限制性定语从句的关系代词有as,which,who,whom,whose;关系副词有when 和where.Eg:As we all know,water will turn into ice when the temperature is below zero.My grandpa,who is over eighty,exercises every day.Many people are used to staying up late,which is bad for their health.Jimmy knew the boy,whom I talked with just now.Frank visited a small farm,where his father worked twenty years ago.8.关系代词和关系副词的选择(1)从句缺少成分，则选择关系代词(2)从句不缺成分，则选择关系副词Eg:They talked about the city________the singer held a concert.A.whoseB.thatC.whereD./解析：C.从句不缺成分，因此需选择关系副词where.They talked about the city________was famous as a trade center.A.whoseB.thatC.whereD./解析：B.从句缺少主语，因此需选择关系代词，且根据句意应选择that.9.关系代词that和which用法辨析that和which在定语从句中都可指物，且可作主语或宾语。
【英语】中考英语总复习--英语定语从句一、定语从句1．This is the bike_______I lost last week.A．that B．what C．who D．whose【答案】A【解析】试题分析：句意：这是我上周丢失的那辆自行车。
此句是一个定语从句。
bike为先行词，当先行词为物时，引导词应该用that/which，故答案为A。
考点：考查定语从句。
2．The last place _______ we visited was Chaoshan Custom Museum.A．where B．that C．when D．why【答案】B【解析】句意：我们参观的最后一个地方是潮汕风俗博物馆。
根据句子结构可知，这里考查的是定语从句，where关系副词，指地点；that关系代词，先行词为物；when关系副词，指时间；why关系副词，指原因。
定语从句中visited后缺少宾语，故应填关系代词，选B。
3．The boys ____________ from America like ChinaA．who is B．are C．which is D．who are【答案】D【解析】【详解】句意：这些来自美国的男孩喜欢中国。
考查定语从句。
本句是主谓宾结构，可排除B项。
空白处做主语the boys的后置定语，先行词the boys是人，不可用which（用于先行词是物时），需用who引导；the boys是复数人称，系词需用are；根据句意结构，可知选D。
4．Linda will never forget the words her father told her.A．that B．who C．where D．what【答案】A【解析】【详解】句意：Linda将永远不会忘记她父亲告诉她的这些话。
that关系代词，引导定语从句，先行词可以为人或物；who关系代词，引导定语从句，先行词为人；where是关系副词，引导定语从句，在从句中作地点状语；what什么，常引导名词性从句，不能引导定语从句。
初三中考英语定语从句专项试卷及答案一、选择题1．— Why do so many people like Ann?— Because she is a girl ________ always thinks more of others.A．which B．who C．whose D．what2．—Are you interested in the talk show The Reader on CCTV?—Sure. It's a great TV program ________ brings the habit of reading back into the public. A．that B．what C．who D．whom3．---How much do you know about John Nash?----Just a little. He is a Nobel Prize –winning scientist ____ was killed in a car crash yesterday. A．which B．what C．who D．whom4．Have you found the information about famous scientists you can use for thereport?A．where B．which C．what D．who5．Some interesting TV shows lots of famous stars performed attracted lots of youngpeople.A．on which B．that C．which D．in which6．The Gree (格力) Company is developing a new kind of machine can cool down our rooms more quickly.A．who B．what C．whom D．which7．The English-Chinese dictionary my father bought for me many years ago is still of great help.A．whose B．that C．who D．when8．__________ wants to go to the park this weekend， raise your hands， please. A．Anyone who B．Those who C．Anyone D．Who9．The old town has narrow streets and small houses _____are built close toeach other.A．who B．that C．what D．They 10．—Have you seen my watch anywhere, Lucy?—Is it the one your uncle bought for you in Hong Kong?A．who B．what C．that D．when11．The place ________ interested me most was the Children’s Palace.A．what B．whereC．which D．in which12．--- Have you ever seen the film The Shawshank Redemption?---Yes, and I think it is the best film teaches me a lot.A．that B．which C．what D．/13．--- Why do you admire Yuan Longping so much?--- Because he is the person helps solve the problem of hunger.A．which B．who C．what D．/14．- It’s the best time to visit Lianyungang now.- This is the best place _____ I have ever visited.A．where B．that C．which D．when 15．Success falls to those ________ hold their dreams and put their hearts into them. A．which B．whom C．what D．who16．The old collector always prefers art works ________ describe the everyday life of common people.A．who B．whose C．where D．which 17．—What impressed you most in your middle school?— _______________. They were strict but always encouraged me when necessary.A．The teachers who helped me a lot B．The activities which I took part inC．The subjects which I was interested in D．The books that I shared with my friends 18．There are many works of art in the museum _______we will visit tomorrow.A．where B．who C．which D．what19．Tim is so clever that he can always understand almost all ________ our English teacher said. A．that B．what C．which D．who20．—The holiday is coming. Where do you want to go?—I’d love to go to the place ________ interests me most.A．which B．whose C．what D．in which21．I like fruit ________ tastes sweet.A．who B．what C．which D．when 22．—Shakespeare is a great writer ________ is considered as a genius (天才).—I think so. Many people around the world admire him very much.A．which B．who C．whose D．what23．Lei Feng is a great man ________ is known by people all over the world.A．what B．which C．who D．when24．—I only heard of him a little. But what are the other important things ________ done by him?—He also set up Tongmenghui with Huang Xing.A．that B．which C．who D．which were 25．Running man is a very relaxing TV program_______is hot among the young people. A．what B．which C．who D．whom26．This is the best book________I have read.A．\ B．whose C．which D．who27．Home is a place ________ you grow up hoping to leave, and grow old hoping to return to. A．who B．what C．that D．how28．The man ________ gave us a talk on science yesterday is a famous scientist.A．whose B．whom C．which D．who29．Tom survived when the car ________ he was a passenger in turned off the road and broke down.A．where B．that C．as D．why30．—How was your trip to Yangzhou?—Wonderful. I think I have just visited the best place ________ can show us the beauty of Spring. A．what B．who C．that D．/31．I will never forget the important people in my life ________ helped and supported me. A．who B．which C．what D．whom32．— According to the survey, women ________ drink more than two cups of coffee a day have a great chance of having heart disease than ________ who don’t.— Oh, really? How great he is!A．who, that B．/, these C．who, those D．/, /33．Do you know the boy ________ mother is an excellent teacher?A．which B．who C．whose D．what34．— Do you like the song Shao Nian?— Yes. I like the songs ________ I can sing along with.A．that B．who C．what D．where35．Ne Zha is a Chinese cartoon ________ has been popular in China and is much loved by little children and their parents.A．who B．what C．which D．it36．WeChat is a useful communication tool _________ can help people talk to friends，share photos，ideas and feelings freely．A．whom B．who C．whose D．which37．I will never forget the people and the things_______ I saw on the Great Wall.A．who B．which C．whom D．that38．I'd like to tell you something about the traffic rules ________you will find useful when traveling to England.A．what B．which C．who D．how39．—Why do you call him Mr. Knowledgeable?—Because he knows almost everything ________ we want to know.A．whom B．what C．who D．that40．The Hong Kong-Zhuhai-Macao Bridge ________ is a masterpiece（杰作）in modem engineering has won high praise from the world.A．what B．why C．where D．which41．The girl ________gave the speech just now is an inventor.A．which B．what C．who D．whom 42．Wetchat is a useful communication tool________can help people talk to friends, share photos, ideals and feelings freely.A．whom B．which C．who D．whose 43．—You have been to Yangzhou recently. What do you think of this city?— I like it very much, and I think it is the most beautiful place ____ I have ever been to. A．which B．that C．where D．who44．I will never forget the three years I spent with my classmates and teachers in the middle school.A．which B．when C．what D．where45．The happiest of people don’t necessarily have the best of everything; they just make the most of everything ________ comes along their way.A．which B．who C．when D．that46．— Could you show the way to the station to me may be five minutes' walk from here?— No problem. But it's silly to take a taxi you can easily walk to the station.A．/; if B．which; since C．that; when D．who; if 47．—What does “mother” mean to you, Sandy?—Everything. Mother is the person _______ is always standing in the wind and waiting for me on cold winter days.A．who B．which C．whom D．what48．— Who is the man________ is interested in reading Beautiful Yangzhou?—It’s Mr. Baker, our Eng lish teacher.A．that B．/ C．whom D．which49．-Have you found the information about the famous people ______ you can use for the report?-Not yet. I’ll search some on the Internet.A．who B．what C．whom D．which50．—Do you know the boy ________is talking to Mr Zhang?—Yes. He is our monitor.A．which B．who C．whose D．whom二、选择题51．—_________ I have tried many times, I can't work it out.—Don't give up and let's have another try together.A．Since B．Because C．Unless D．Though52．Don't be afraid of asking for help ________ it is needed.A．unless B．until C．although D．when 53．Smiling is the best policy. People will smile back ________ you smile at them.A．unless B．although C．until D．when54．Many people do not realize the importance of health _________ they have fallen ill. A．until B．while C．when D．after55．___________ I hear Kenny G's recording Going Home, I always think of my hometown. A．While B．Since C．Until D．Whenever 56．—The novel written by Stephen seems a bit boring to me.—___________ you put your heart into it, you won't enjoy it.A．When B．If C．After D．Unless57．In ancient times, people seldom travelled long distances and most farmers only travelled________ the local market.A．longer than B．more than C．as much as D．as far as58．All students should keep taking exercise every day _______ they are busy studying so many subjects.A．until B．because C．though D．unless59．The old couple insist on living in a small village among the mountains __________ they can get closer to nature.A．until B．unless C．even though D．so that60．My parents gave red packets to my cousin every Spring Festival___________ she got a job, because she said she was able to make money.A．after B．when C．until D．since61．I think the coffee beans are from Brazil, ________ I’m not completely sure.A．because B．since C．though D．whether 62．There will be fewer accidents _______ all of us obey the traffic rule.A．if B．unless C．though D．because63．_______ China has controlled the virus, some people in other parts of the world still live in fear of their lives.A．While B．Although C．Unless D．Until64．You’ll ________ the war ________ you watch the film.A．feel sad about; unless B．feel sad about; ifC．feel sad with; unless D．feel sad with; if65．—Mike, can you tell me how to speak in an online class?—Sure, click on this icon you start to speak.A．after B．until C．before D．since 66．Benny, monitor of our class, is such ________ honest boy that we all trust him.A．a B．an C．the D．/67．—It's time for me to go back home now.—Really? ________ you have to go, take the umbrella, it's raining outside.A．If B．When C．Until D．Unless68．I'm sure you can catch up with others _______ you work hard.A．until B．if C．unless D．though 69．—More and more people like shopping online now.—I agree. My sister will be crazy about it ________ my parents give her enough money.A．if B．unless C．when D．while70．— What do you think of Spud Webb, the shortest player in the NBA?一 Amazing, ________he was refused many times at first.A．unless B．though C．since D．because 71．—The local snack tastes spicy and sweet.—Well, ___________ you are here, why not have a try?A．since B．because C．though D．unless72．Dr. Smith will never leave his parents ________ he is sure both of them are taken good careof.A．since B．though C．if D．unless73．It’s sad t o hear that 19 people lost their lives ________ they were fighting with the forest fire in Liangshan, Sichuan.A．as soon as B．after C．while D．until74．You will get a toothache _____________ you clean your teeth regularly.A．unless B．when C．though D．because75．The kitchen in my flat is well designed it is a bit small.A．although B．since C．so D．because76．________ it has a long history, time hasn’t stopped the Forbidden City from trying to build bridges with young people through cultural products.A．Unless B．Because C．Although D．Since77．Jack is still working to high standards ________ he has made great achievements.A．until B．if C．though D．because78．________ more and more people surf the Internet for news, the traditional newspaper may not disappear in a short time.A．Because B．If C．Though D．When 79．—Look! Someone is running the red lights.—We should wait ________ others are breaking the rules.A．although B．because C．unless D．if80．Jack has made great progress ________ he joined the English club.A．when B．since C．while D．before81．—We will go out for a picnic as we planned ________ it rains tomorrow.—You needn’t worry about the weather. It’s sunny tomorrow.A．until B．unless C．if D．when82．—Did you watch the Football League yesterday?—Yes, of course. I never miss it ________ I am too busy with my homework.A．unless B．until C．if D．since83．Life is like climbing a mountain. ________ you feel tired, you will enjoy the beautiful view at the top of the mountain.A．Since B．Unless C．Because D．Though 84．Grade 9 students should keep exercising ________ they are busy with so many subjects. A．if B．until C．though D．because85．_______ she is wrong, it’s not a big deal.A．Because B．So C．Although D．But86．I go jogging every morning, ________ it is very hot outside.A．so B．but C．although D．because 87．Mr. Page still plans to take up a new hobby ________ he is almost 70 years old. A．though B．because C．if D．while88．A really great man is always modest ________ he has got a lot of achievements.A．but B．unless C．though D．because 89．The pollution in the sea will be terrible ________ the Japanese government gives up their plan.A．until B．unless C．because D．if90．Her job is not up to the boss's standard ________ she has worked at it for a week. A．since B．although C．if D．unless91．________ I have solved it, you can't imagine how much difficulty I faced.A．Because B．Although C．Unless D．When92．In summer, milk quickly goes bad ________ it is put into a fridge.A．though B．unless C．because D．once93．Mr. Picky won’t want to eat it ________ he’s really hungry, in which case he’ll eat almost anything.A．because B．when C．before D．unless94．The theatre will have to close ________ the government agrees to give extra money. A．if B．unless C．because D．until 95．Father was so proud of _________ she has made ________ he showed her works of art on Tiktok.A．what; that B．that; that C．what; what D．that; what 96．The astronaut lives in ________ that he has to be careful with every movement. A．such little space B．so little space C．so much space D．such more space 97．________ she is wrong, it’s not a big deal.A．Because B．So C．Although D．But98．Sam thought his robot broken ________ Jim pointed out that he’d forgotten to turn it off. A．until B．unless C．after D．as soon as 99．—It is a pity that the disease is still terrible at present.—Yes. It will be worse ________ we take further action to do something for it.A．unless B．since C．if D．when 100．—Did you stay at the party for a long time last night?—Yes. I stayed there ________ the party was over.A．until B．since C．when D．if【参考答案】***试卷处理标记，请不要删除一、选择题1．B【详解】句意：——为什么这么多人喜欢安？——因为她是一个总是为别人着想的女孩。
人教版中考英语九年级英语定语从句专项练习题及答案一、定语从句1・I Will never forget the fire __________________ happened in Shanghai last year.A. WhenB. WhereC. What D・ WhiCh【答案】D【解析】【分析】考点：考査泄语从句。
【详解】试题分析：句意：我将永远不会忘记去年上海发生的火灾。
先行词the fire是物，故英立语从句要用WhiCh引导。
what不引导立语从句；V V hen先行词是时间；where先行词是地点；根据题意，故选D。
2・A true friend is a PerSOn _________ reaches for your hand and touches your heart.A. WhOmB. WhOSeC. WhOD. WhiCh【答案】C【解析】【详解】句意：真正的朋友是一个帮助你并且让你感动的人。
考查立语从句的关系词。
本句中先行词PerSOn为怎语从句的逻辑主语，且指人，所以引导左语从句的关系代词用that或者who：结合句意和选项可矢口选Co【点睛】在泄语从句中，当先行词是人时，引导词在泄语从句中做主语时，引导左语从句的先行词用that或who,引导词在定语从句中做宾语时，引导泄语从句的先行词用that或whom, 引导词前面有介词时,必须用介词WhOmO例如，(1) The girl WhO is Singing an EngliSh SOng in the next room is TOm,s sister. (2) The PerSOn that/WhOm you talked to just now is TOm,s father.=The PerSOn to WhOm you talked just now is TOrn,s father.在泄语从句中，当先行词是物时，引导词在过语从句中做主语时，引导左语从句的先行词用that或which,引导词在左语从句中做宾语时，引导泄语从句的先行词用that或which,引导词前面有介词时,必须用介词WhiCh e例如，He WaS reading a book which/that WaS about war.他正在读一本关于战争的书。
中考英语总复习-定语从句一、1. 定义：在复合句中，修饰某一名词或代词的从句叫做定语从句。
如：1) The man who lives next to us is a policeman.2) You must do everything that I do.上面两句中的man和everything是定语从句所修饰的词，叫先行词，定语从句放在先行词的后面。
2. 引导定语从句的词有关系代词that, which, who(宾格who, 所有格whose)和关系副词where, when、why3. 关系词常有三个作用：（1）引导定语从句（2）代替先行词（3）在定语从句中担当一个成分二、关系代词引导的定语从句1. who指人，在从句中做主语。
(1) The boys who are playing football are from Class One.(2) Yesterday I helped an old man who lost his way.2. whom指人，在定语从句中充当宾语，常可省略。
(1) Mr. Liu is the person (whom) you talked about.注意：关系代词whom在口语和非正式语体中常用who代替，可省略。
(2) The man who/whom you met just now is my friend.3. which指物，在定语从句中做主语或者宾语，做宾语时可省略(1) Football is a game which is liked by most boys. ( which 在句子中做主语)(2) This is the pen (which) he bought yesterday. ( which 在句子中做宾语)4. that指人时，相当于who或者whom；指物时，相当于which。
在宾语从句中做主语或者宾语，做宾语时可省略。
