2020年全国高考英语试题分类汇编：定语从句
2020近5年高考全国卷真题语法专项-定语从句(详解与真题)
2020近5年高考全国卷真题语法专项-定语从句（详解与真题）考查形式：语法填空和短文改错；其次阅读理解和完型填空中长难句的分析等1考点聚焦功能：相当于形容词，修饰名词或代词，在句中作定语位置：定语从句置于被修饰词之后例如：He is the man who studies in USA.本句中涉及到三个概念：1.先行词即 the man：被定语从句饰的词称为先行词先行词一般是名词和不定代词，如:some-, any-, every-和no与-boy, -thing 的合成词；或all、none、any、some、that、those等代词。
数词也可以作先行词，人称代词也同样可作先行词。
2. 引导词即who:起连接的作用引导词分两类：关系代词和关系副词关系代词：who;which;that;whose;whom关系副词：when;where;why3.从句即studies in USA.：引导词之后的句子。
2考点精讲1. 关系代词: who;which; that; whom; whose其中关系代词who;which;that;whom用于后面的从句缺主语或宾语的情况(1) who:指代先行词是人(可做从句的主语或宾语)She is the girl who I teach in China.(从句缺宾语)That is the man who teaches us English.(从句缺主语)(2) which:指代先行词是物（做从句的主语或宾语）That is the book which I want.(从句缺宾语)There is a bird which stands in the building.(从句缺主语)(3) that: 指代先行词是人或物（做从句的主语或宾语）She is the girl who/that I teach in China.(从句缺宾语)There is a bird which/that stands in the building.(从句缺主语)(4) whom;指代先行词是人，但只用于从句是缺宾语的情况。
2020年高考英语语法考点讲解与真题分析专题6：定语从句(一)附解析
2020年高考高考语法考点讲解与真题分析06定语从句（一）在主句中作定语的句子叫定语从句。
定语从句又分为限制性定语从句和非限制性定语从句两种。
考点一定语从句关系词的选择定语从句关系词的选择是定语从句的重点和难点。
关系词分为关系代词和关系副词，关系词替代先行词在定语从句中作主语、宾语、表语、定语或状语。
关系词的选择可从两个方面入手：一是关系词在从句中所作的成分；二是先行词所指。
关系词在从句中作主语、宾语、表语或定语时，用关系代词；关系词在从句中作状语时，用关系副词。
先行词指人时，关系代词用who, whom, that, whose；先行词指物时，关系代词用which, that, whose。
详见下表：1.关系代词who, whom, which, that引导定语从句关系代词who, whom, which, that在从句中作主语、宾语、表语。
1. The little problems _______ we meet in our daily lives may be inspirations for great inventions. （2017北京）A.thatB. asC. whereD. when【答案】A【解析】这是一个复合句，主句是The little problems may be inspirations for great inventions，从句是_______ we meet in our daily lives。
从句修饰主句中的problem，是定语从句；关系词在从句中作meet的宾语，应用关系代词，故用that。
2．The exact year Angela and her family spent together in China was 2008. （2014安徽）A. WhenB. whereC. whyD. which【答案】D【解析】这是一个复合句，主句是The exact year was 2008，从句是_______ Angela and her family spenttogether in China。
2020最新命题题库2020高考英语试题分项解析汇编 专题13 定语从句
2020英语高考试题分项解析汇编专题13 定语从句fair weather and ask for it back when it begins to rain.A. whenB. thatC. whereD. there【答案】C【考点】考查定语从句。
【解析】本句中的先行词是the place.，先行词在定语从句中作地点状语，所以应该用关系副词where。
has a gift for creating an atmosphere for her students ____ allows them to communicate freely with each other.A. whichB. whereC. whatD. who【答案】A【考点】考查定语从句。
【解析】分析句子成分可知，an atmosphere与修饰它的定语从句被for her students隔开，该从句缺少主语，所以用which。
was April 29,2001 Prince William and Kate Middleton walked into the palace hall of the wedding ceremony. A．that B．when C．since D．berore【答案】B【考点】考查定语从句。
【解析】去掉It was及that后，April 29，2020不可以单独作时间状语，所以不是强调句型。
用when引导定语从句修饰April29，2020。
﹚The prize will go to the writer ________ story shows the most imagination.A. thatB. whichC. whoseD. what【答案】C【考点】考查定语从句。
【解析】本题主句中的先行词writer和从句中的主语story有所属关系，译为作者的故事，因此选C。
句子的意思是：我们的奖金会留给故事情节最富有想象力的作者。
2020年高中英语定语从句讲解及练习题(含答案)
定语从句讲解一．基本介绍❶功能：相当于adj,修饰名词或代词，在句中作定语。
❷位置：被修饰词之后❸先行词：被定语从句修饰的词❹关系词：连接先行词与从句的词称为关系词。
❺确定关系词的步骤：先看先行词，指的是什么；看关系词在充当的成份。
二．特殊用法1.He was looking pleasantly at the children and parcels______filled his bus.2.The village is no longer the one ___it was five years ago. 5.Such books____you bought are useful.23.Which are the books____you bought for me? 6.____ is known,the earth is round.4.There is a room,_____window faces the river. 7.There is lots of air in loose snow,_____can keep the cold out.3高中定语从句练习（整理）1. They talked for about an hour of things and persons _____ they remembered in the factory.A. whichB. thatC. whoD. whom2. We are going to spend this Spring Festival in Beijing, _____ live our grandparents and some relatives.A. whichB. thatC. whoD. where3. There are many areas in the world _____ lack experienced doctors.A. whereB. in whichC. whichD. what4. The years and months _____ we spent together are really wonderful to us all.A. whenB. on whichC. in whichD. that5. _____ has been described above, it is a general rule that solids expand as the temperature increases and contract when they are cooled.A. ItB. AsC. ThatD. Which6. A. who’s B. which C. whose7. Susan is not the brilliant writer _____ she used to be. D. thisA. whichB. thatC. whoD. whom8. I, who _____ your friend, will try my best to help you.A. beB. amC. areD. is9. The size of the audience, _____ we had expected, was well over 1600.A. asB. thatC. whichD. who10. They have started an investigation, _____ are being kept secret.A. whose detailB. whose the detailsC. the details of whichD. the detail of it11. Have you ever asked him the reason _____ may explain his absence?A. whyB. for whichC. whichD. what12. There were two rooms in the beach house, _____ served as a kitchen.A. the smaller of themB. the smallest of whichC. the smaller of whichD. smallest of which13. He imagined various ways _____ he could teach her how to learn English well.A. /B. thatC. in whichD. A , B & C14. The speed _____ light travels is said to be the maximum in the universe.A. in whichB. by whichC. at whichD. from which15. Can you think out a situation _____ this idiom can be used?A. in whichB. thatC. whereD. A & C16. China has hundreds of islands, _____ is Taiwan.A. in which the largestB. its largest of whichC. of which the largestD. which the largest17. We ate in a luxurious restaurant but it wasn’t such a good dinner _____ she had promised us.A. thatB. whichC. asD. what18. They stayed with me for three weeks, _____ they drank all the wine I had.A. whichB. which timeC. during whichD. during which time19. She was dressed in the same way _____ she was when I saw her last time.A. thatB. asC. onceD. in which20. The fire started on the first floor of the hospital, _____ patients are mostly elderly people.A. itsB. whichC. whoseD. their21. The company official _____ I thought would be fired received a raise.A. whomB. whoeverC. whoD. of whom22. Alec asked the policeman _____ he worked to contact him whenever there was an accident.A. with himB. whoC. whomD. with whom23. We are living in an age _____ many things are done on computer.A. at whichB. thatC. whenD. which24. The factory produces half a million pairs of shoes every year, 80% _____ are sold abroad.A. whichB. which ofC. of whichD. of that25. The road conditions there turned out to be very good, _____ was more than we could expect.A. itB. whichC. whatD. that26. He’s such a good teacher _____ we all love and respect.A. thatB. as C who D. whom27. Today, more and more people are concerned about the way _____ the environment is being destroyed.A. whichB. in thatC. in whichD. how28. The old man finally got a chance to visit the school, _____ he used to study, _____ he had beendreaming of for years.A. that…whichB. where…thatC. in which…whatD. where…which29. This is the least interesting book _____ during my holidays.A. that I have ever read itB. what I have ever readC. I have ever readD. which I have ever read30. The result is not the same _____ they had expected, _____ was rather disappointing.A. which…asB. as... thatC. that…whichD. as…which31. We interviewed the old lady, _____ had been killed in the air crash last week.A. whose all childrenB. all her childrenC. all of her childrenD. all of whose children32. There are altogether eleven books on the shelf, _____ are mine.A. of which fiveB. in which fiveC. five of whichD. A & C33. ---Is this dictionary _____ you want to buy?---Yes, this is the very dictionary _____ I need.A. which…thatB. the one…whichC. the one…/D. the one that…which34. I’ll give you my friend’s home address, _______ I can be reached most evenings.A. whichB. whenC. whomD. where35. The friendship is like health, _____ is seldom known until it is lost.A. its valueB. the value of itC. the value of whichD. whose the value36. I can think of many cases _____ students obviously knew a lot of English words and expressions butcouldn’t write a good essay.A. whichB. in whichC. whereD. B & C37. The artist _____ the judge gave a prize is the teacher _____ I have been taught painting for two years.A. from whom…by whomB. to whom…whoC. to whom…by whomD. from whom…who38. American women usually identify their best friend as someone _____ they can talk frequently.A. whoB. asC. about whichD. with whom39. Last night I took a taxi, _____ took me straight home.A. and itB. itC. whichD. A & C40. I shall never forget the days _____ I lived in the countryside with the farmers, _____ has a great effecton my life.A. when…thatB. when…whenC. when…whichD. which…which41. The town _____ you visited last month is the one _____ Einstein was born.A. where…whereB. which…whichC. that…whereD. that...which42. He’s got himself into a dangerous situation _____ he is likely to lose control over the plane.A. whereB. whichC. at whichD. in that43. Tom’s mother kept telling that he should work harder, _____ didn’t help.A. but itB. asC. whichD. A & C44. I’m looking for a present for my mother’s birthday, _____ she can use and at a reasonable price.A. thatB. oneC. whatD. which45. There isn’t much _____ I can do, _____ makes me disappointed.A. that…whichB. which…thatC. that…thatD. which…which46. That e-book is no larger than an ordinary book with a screen _____ you can read novels.A. in whichB. thatC. whereD. of which47. "Who moved my cheese?”, _____ is a best-selling book, is written by Spencer Johnson.A. whichB. thatC. itD. whose48. Shirley said that she would have a two-week holiday in July, _____ I think, is impossible.A. itB. thatC. whenD. which49. It was an exciting moment for these football fans this year, _____ for the first time in years their teamwon the World Cup.A. thatB. whichC. whenD. while50. I was so angry at all _____ he was doing _____ I walked out.A. that…thatB. which…thatC. which…whichD. /…which51. The moment he set his foot in the new country, to his great surprise, he was surrounded by friendlypeople_____ he could turn for help.A. from whomB. to whomC. on whomD. by whom52. It was not until Mum agreed to take her to KFC, _____ was her favorite, _____ the spoilt girl stoppedcrying.A. that…thatB. that…whichC. which…thatD. which…which53. You can use a large plastic bottle, _____ cut off, as a pot to grow flowers in. Which is wrong?A. the top of which isB. whose top isC. its top isD. with its to54. The British are not so familiar with different cultures and ways of doing things, ______is often thecase in other countries.A. thatB. soC. whatD. as55. Keep the drug _____ is out of children reach.A. in a place whereB. whereC. in a place whichD. in which56. When we talk about the cities in United States, the first _____ comes into our mind is New York.A. oneB. cityC. thatD. which57. He arrived in Shanghai in 2003, _____, some time later, he became a teacher.A. whenB. whereC. thatD. which58. The challenge is to create a system, _____ the farmers can teach the world about plant medicine.A. whereB. whichC. whenD. for which59. Jogging on the road was one of the reasons _____ 21 people, including 20 students and 1 teacher, diedand another 16 were injured in the accident in Shanxi Province.A. becauseB. whichC. for whichD. how60. It was in the Beihai Park, _____ they made a date for the first time _____ the old couple told us their love story.A. where…thatB. that…whereC. that…thatD. where…when定语从句Key1. BDCDB 6. CBBAC 11. CCDCD 16. CCDBC 21. CDCCB 26. BCDCD 31. DDCDC 36. DCDDC 41. CADB A 46.CADC A 51.BCCDC 56. CBACA。
高考英语语法真题分类汇编：定语从句(2017-2020)
高考英语语法真题分类汇编：定语从句（2017-2020）12020年高考真题1.【2020江苏卷】Many lessons are now available online, from students can choose for free.A. whoseB. whichC. whenD. whom【答案】B【解析】考查定语从句。
句意：许多课程现在都可以在网上找到，学生们可以从中免费选择。
此处是非限定性定语从句，先行词是many lessons，关系词在从句中做介词from的宾语，应使用关系代词which引导。
故选B。
2.【2020天津卷】 Dr. Rowan, secretary resigned two weeks ago, has had to do all his own typing.A. whoseB. of whomC. of whichD. which【答案】A【解析】考查定语从句。
句意：罗文博士的秘书两周前辞职了，他现在只能自己打字。
______ secretary resigned two weeks ago是非限制性定语从句，修饰Dr. Rowan，引导词在从句中作定语，表示“Dr. Rowan’s”，表示“……的” ，应用关系代词whose引导该从句，故选A。
3.【2020新课标Ⅲ卷·语法填空,61】 In ancient China lived an artist paintings were almost lifelike.【答案】whose【解析】考查定语从句。
句意：中国古代有一位画家，他的画几乎栩栩如生。
此处为定语从句修饰先行词artist，且先行词在从句中作定语，故应用关系代词whose。
故填whose。
22019年高考真题1.【2019·江苏卷·单项填空, 21】 We have entered into an age dreams have the best chance of coming true.A. whichB. whatC. whenD. that【答案】C【解析】考查定语从句。
2020高考英语真题中的定语从句语料
2020高考英语真题中的定语从句语料Returning to a book you’ve read many times can feel like drinks with an old friend.There are three books I reread annually.The first, which I take to reading every spring is Emest Hemningway’s A Moveable Feast.The best books are the ones that open further as time passes.The longest track and field event at the Summer Olympics is the 50-kilometer race walk, which is about five miles longer than the marathon.According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories(卡路里) per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,000 or more calories per hour.These include plants that have sensors printed onto their leaves to show when they’re short of water and a plant t hat can detect harmful chemicals in groundwater.In the future，the team hopes to develop a version of the technology that can be sprayed onto plant leaves in a one-off treatment that would last the plant’s lifetime.The creative team behind “Apes”used motion-capture (动作捕捉) technology to create digitalized animals, spending tens of millions of dollars on technology that I records an actor’s performance and later processes it with computer graphics to create a final image (图像).One nonprofit organization, which monitors the treatment or animals in filmed entertainment, is keeping tabs on more than 2,000 productions this year.And there are questions about the films made outside the States, which sometimes are not monitored as closely as productions filmed in the Sates.We are the products of evolution, and not just evolution that occurred billions of years ago.定语从句Cattle -raising people in East Africa and northern Europe have gained a mutation (突变) that helps them digest milk as adults.as引导的定语从句The Bajau, as these people are known, number in the hundreds of thousands in Indonesia, Malaysia and the Philippines.She wondered if centuries of diving could have led to the evolution of physical characteristics that made the task easier for them.whose引导的非限制性定语从句In ancient China lived an artist, whose paintings were almost lifelike.Judges will choose up to 50 honorable mention winners, who will each receive a T-shirt in memory of Earhart’s final flight.Hence this book, Chasing the Sea: Lost Among the Ghosts of Empire in Central Asia, which talks about a road trip from Tashkent to Karakalpakstan, where millions of lives have been destroyed by the slow drying up of the sea.It is the story of an American travelling to a strange land, and of the people he meets on his way: Rustam, his translator, a lovely 24-year-old who picked up his colorful English in California, Oleg and Natasha, his hosts in Tashkent, and a string of foreign aid workers. And contrary to existing research that says you should avoid eating with heavier people who order large portions (份),it’s the beanpoles with big appetites you really need to avoid.But in half the cases she wore a specially designed fat suit which increased her weight to 180 pounds.People want to listen to someone who is interesting, relaxed andcomfortable.Yet, the only one who cares about any mistake is the one who is speaking.There was a man sick in bed, his wife, who took care of him and could not go out to work, and their little boy.I have a solution that we can all help accomplish (完成)It was a trait others found helpful, and I soon had friends who wanted to make things with me.。
2020年高考英语易错题集锦 whose引导的定语从句
小议whose引导的定语从句（要点精讲）whose引导的定语从句是语法重点，也是高考中经常考查的语法内容之一。
要学好whose引导的定语从句的用法，应注意以下方面。
一、whose为who的所有格，作“某（些）人的……”解，它所指代的先行词必须是人，其引导的定语从句修饰它的先行词，同时它本身在从句中作定语。
This is the little girl whose parents were killed in the great earthquake. 这就是在那次大地震中失去双亲的那个小姑娘。
Mr. Liu wants to talk to the students whose homework hasn’t been handed in. 刘老师要跟那些没交家庭作业的学生谈话。
二、whose也可作which的所有格，作”某（些）物的……“解，它所指代的先行词必须是物，其语法功能同上。
The company whose name was Notco was in Australia. 那个名叫诺特可的公司设在澳大利亚。
We live in a house whose windows open to the south. 我们居住在一所窗户朝南开的房子里。
三、whose可修饰定语从句中的主语、宾语、介词宾语等不同成分。
Mr King, whose legs were badly hurt, was quickly taken to hospital. 金先生的腿受了重伤，很快就被送往医院。
（whose修饰定语从句中的主语legs）We shall have to make a decision about Ms King, whose story I've just told you. 关于金女士的情况，我刚才已经告诉你们了，我们得对她的事情作出决定。
（whose修饰定语从句中的宾语story）四、whose 在定语从句中，有“所属”含义，其本身就是一个限定词，相当于one’s（如my，his，her，its，our，your，their等），故不可再与其它限定词并列使用。
2020年高考英语易错题集锦 引导的定语从句
“介词+ 关系代词”引导的定语从句（要点精讲）“介词+关系代词”怎么用？“介词+关系代词”分别等于什么？下面的讲解将为你拨云见日。
一、“介词+关系代词”的用法当关系代词在定语从句中作介词宾语时，我们通常用“介词+关系代词”引导定语从句。
如果指“人”，用“介词＋whom”；如果指“物”，用“介词＋which”。
例如：Do you know the lady with whom our manager is talking in the office?Where is the supermarket in which you bought the laptop last week?●使用“介词+关系代词”时要注意以下几点：(一) 选用介词的依据：1. 根据定语从句中谓语动词的搭配习惯（即固定短语）。
例如：Yesterday we visited the West Lake for which Hangzhou is famous.2. 根据先行词的搭配习惯（约定俗成，不一定是短语）。
例如：The old woman with whom you talked just now is a famous artist.3. 根据句子的意思来选择。
例如：The naughty boy made a hole in the wall through which he could see what is happening outside.4. 表示“所有”关系或“整体中的一部分”时，通常用介词of。
例如：I have about 20 books, half of which were written by Bing Xin, the famous writer.(二) 在定语从句中，含介词的短语动词不可拆开使用（短语拆开后含义发生变化），如look after，look for等。
例如：The babies whom the nurses are looking after are very healthy. (正)The babies after whom the nurses are looking are very healthy. (误)(三)“of which / whom”有时可以用“whose＋名词”结构来改写。
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2020全国高考汇编之定语从句一（2020安徽卷）22．The exact year Angela and her family spent together in China was 2008.A. WhenB. whereC. whyD. which【考点】考察定语从句【答案】D【解析】本题定语从句的先行词是the exact year，后面的定语从句Angela and her family spent together in China中动词spent后面缺少宾语，所以使用关系代词which引导这个定语从句，并在句中做宾语。
Where的先行词通常是指地点的名词，关系副词when的先行词通常是表示时间的名词，why的先行词是the reason。
ABC三项通常在句中做状语。
Which 在定语从句里做主语，宾语或者表语。
句义：Angela和他的家人一起在中国度假确切是在2008年。
故D正确。
【试题延伸】定语从句的考查主要就是考查关系词的辨析，关系代词that, which, whose, whom, as， who在句中做主语，宾语，表语或者定语；where, why, when在句中做状语。
要分析句子成分，看缺少什么成分，就选用相应的关系词。
【举一反三】Between the two parts of the concert is an interval, _______ the audience can buy ice-cream.A. whenB. whereC. thatD. which【答案】A【考点】考查定语从句。
【解析】句意：音乐会的两大构成部分中间有幕间休息时间，在这段时间里观众可以去买冰激凌。
When引导的定语从句修饰an interval，when在从句中作时间状语。
首先解析句子结构，判断从句类型，题干说“在音乐会中间有间歇，此时你可以买冰激凌。
”题干的前半部分完整无缺，后半部分补充说明这个间歇你可以干的事，所以这是一个非限定性定语从句，先行词为interval，非限定性定语从句的功能就是对先行词进行补充说明。
由于从句部分不缺少主干成分，而且interval表时间，所以正确答案为A．二（2020北京卷）26. I borrow the book Sherlock Holmes from the library last week, ______ my classmates recommended to me..B. whichC. whenD. Where【考点】考察定语从句【答案】B【解析】本题考察的是非限制性定语从句，先行词是the book Sherlock Holmes，在定语从句中which指代先行词作为定语从句中的动词recommend的宾语。
CD两项是关系副词，不能在句中做宾语，只能做状语。
A项who的先行词通常都是指人的名词。
句意：上个星期我从图书馆里借了《福尔摩斯诡异》，这是我的同学推荐给我的。
故B正确。
【试题延伸】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，起前后都需要用逗号隔开。
需要注意?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。
?在非限定性定语从句中，关系词不能用that。
【举一反三】The Science Museum, we visited during a recent trip to Britain,is one of London’s tourist attractions.〖答案〗A〖考点〗考查非限制性定语从句〖解析〗which引导非限制性定语从句, 指代先行词the Science Museum, 同时又在从句中作visited的宾语。
where为关系副词, 不能作宾语；that不能引导非限制性定语从句；what不能引导定语从句。
三（2020福建卷）31. Students should involve themselves in community activities they can gain experience for growth.A. whoB. whenC. whichD. where【考点】考察定语从句【答案】D【解析】本题定语从句的先行词是community activities，后面的定语从句they can gain experience for growth主谓宾句子结构很完整，所以使用关系副词来引导这个定语从句，where在句中相当于in which，充当状语。
句义：学生应该参与社区活动，在社区活动里他们能够获得成长的经验。
AC是关系代词，不能在句中做状语。
When的先行词通常是表示时间的名词。
故D正确。
【举一反三】Those successful deaf dancers think that dancing is an activity sight matters more than hearing.〖答案〗D〖考点〗考查定语从句〖解析〗句意为“那些成功的盲人舞蹈家认为舞蹈是一项视觉比听觉更为重要的活动。
”先行词activity后跟定语从句, 从句中where作地点状语, 意为“在那儿, 在那种情况或场合下”。
四（2020湖南卷） am looking forward to the day my daughter can read this book and know my feelings for her.A. asB. whyC. whenD. where【考点】考察定语从句【答案】C【解析】本题是一个定语从句，先行词是the day，后面的定语从句结构非常完整，所以使用关系副词when在句中做时间状语，同时引导起这个定语从句。
句义：我一直都在期待着我的女儿能够阅读并理解我对她的感情的那一天。
故C正确。
【举一反三】Between the two parts of the concert is an interval, _______ the audience can buy ice-cream.A. whenB. whereC. thatD. which【答案】A【考点】考查定语从句。
【解析】句意：音乐会的两大构成部分中间有幕间休息时间，在这段时间里观众可以去买冰激凌。
When引导的定语从句修饰an interval，when在从句中作时间状语。
首先解析句子结构，判断从句类型，题干说“在音乐会中间有间歇，此时你可以买冰激凌。
”题干的前半部分完整无缺，后半部分补充说明这个间歇你可以干的事，所以这是一个非限定性定语从句，先行词为interval，非限定性定语从句的功能就是对先行词进行补充说明。
由于从句部分不缺少主干成分，而且interval表时间，所以正确答案为A．五（2020江苏卷）22. The book has helped me greatly in my daily communication, especially at work ________________________________________________ a good impression is a must.A. whichB. whenC. asD. where【考点】考察定语从句【答案】D【解析】本题定语从句的先行词是work，后面的定语从句a good impression is a must 的句子结构很完整，所以使用关系副词在句中做状语，同时也引导起这个定语从句。
句意：在日常交流中这本书书帮助了很多，尤其是在需要有良好印象的工作之中。
AC两项都是关系代词在句中不能做状语，when的先行词通常都是指时间的名词。
故D正确。
【试题延伸】where引导定语从句时，是表示地点或者抽象意义“在…方面”，本身在从句部分充当地点状语。
并且有些时候一些词会很抽象的用作地点，比如，case，stage，position，state，activity,business,occasion,situation,point，work等,但也要视情况而定。
【举一反三】It’s helpful to put children in a situation they can see themselves differently.A. thatB. whenC. whichD. where〖答案〗D〖考点〗考查定语从句。
〖解析〗先行词是situation, 指物, 亦可指地点, 关系词在从句中做地点状语, 用关系副词where, 选D。
把孩子放在他们能够另眼看自己的环境里是有益的。
六（2020江西卷）28. Among the many dangers_-- sailors have to face , probably the greatest of all is fog .A. whichB. whatC. whereD. when【考点】考察定语从句【答案】A【解析】本题定语从句的先行词是the many dangers，在定语从句中关系代词which指代先行词在句中作为动词face的宾语，可以省略。
CD两项都是关系副词，在定语从句中通常只作状语，不能做宾语。
What不是定语从句的关系词。
句义：在士兵面对的很多危险中，也许最大的危险是雾吧！故A正确。
【试题延伸】解答定语从句的关键是分析句子成分，如果定语从句中句子成分很完整就使用关系副词来引导；如果句子缺少主语，宾语，表语或者定语的时候就使用关系代词。
同时也要注意一些关系词的特殊用法，尤其是that/as的特殊用法，既要注意普遍性，也要注意特殊性。
【举一反三】That evening, _____ I will tell you more about later, I ended up working very late.A. thatB. whichC. whatD. when【答案】B【解析】这里that evening是先行词，其在定语从句中作介词about的宾语，所以用which。
句意：以后我将和你谈起的那个晚上，我工作到了很晚。
七（2020山东卷）10. A company ______profits from home markets are declining may seek opportunities abroad.A. whichB. whoseC. whoD. why【考点】考察定语从句【答案】B【解析】本题定语从句的先行词是A company,后面的定语从句中名词profits前面缺少定语修饰，所以使用关系代词whose引导起这个定语从句，并在句中做定语。