高考定语从句与名词性从句填空改错(含答案)
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高考英语三大从句讲解+练习(附答案)【名词性从句】名词性从句相当于名词,可分别作主句的主语、表语、宾语和同位语。
因此,名词性从句成分为主语从句、表语从句、宾语从句和同位从句。
(一)引导名词性从句的连接词1、连接代词:who, whose, whom, what, which。
有词义,在从句中担任成分,如主语、表语、宾语、或定语等。
2、连接副词:when, where, why, how。
有词义,在从句中担任成分,作状语。
3、连接词:that, whether, if, as if。
that 无词义,在从句中不担任成分,有时可省略;if (whether), as if虽有词义,但在从句中不担任成分。
1. 主语从句作句子主语的从句叫主语从句。
主语从句通常由从属连词that,whether,if和连接代词what,who,which,whatever,whoever以及连接副词how,when,where,why等词引导。
that在句中无词义,只起连接作用;连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用,在从句中充当从句的成分。
例如:What he wants to tell us is not clear. 他要跟我们说什么,还不清楚。
It is known to us how he became a writer. 我们都知道他是如何成为一名作家的。
Where the English evening will be held has not yet been announced.英语晚会将在哪里举行,还没有宣布。
有时为避免句子头重脚轻,常用形式主语it代替主语从句作形式主语放于句首,而把主语从句置于句末。
主语从句后的谓语动词一般用单数形式。
常用句型如下:(1)It + be + 名词+ that从句(2)It + be + 形容词+ that从句(3)It + be + 动词的过去分词+ that从句(4)It + 不及物动词+ that 从句另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时,谓语动词要用虚拟语气“(should) +do”,常用的句型有:It is necessary (important, natural, strange, etc.) that …It is a pity (a shame, no wonder, etc.) that…It is suggested (requested, proposed, desired, etc.) that…注意:连词that, whether在从句中不担任句子成分,只起连接作用,不能省略。
高一年级英语暑假作业语法填空和单句改错(定语从句和名词性从句)一、语法填空A。
定语从句1.Thirty-nine Steps is one of the most exciting films ____are directed by Alfred Hotchcock。
2.Those _____ were not fit for their work could not see the beautiful clothes.3.Is there anyone in your class _____ family is in the city?4.Winter is the time of year _____ the days are short and nights are long.5.Because of the traffic jam _____ I was caught in, I was late for the meeting。
st summer we visited the West Lake,______ which Hangzhou is famous in the world.7.He must be form Africa, _______ can be seen from his skin.8.Because of the financial crisis,days are gone _______local 5-star hotels charged 6,000yuan for one night.9.He is the only one of the students who _________( know) the truth。
10.It’s helpful to put child ren in a situation ______ they can see themselves differently.11.Whenever I met her, ______was fairly often,she greeted me with a sweet smile.12.I have reached a point in my life______ I am supposed to make decisions of my own.13.Those successful deaf dancers think that dancing is an activity ________ sight matters morethan hearing。
1. Is this the factory _____ you visited the other day?A. thatB. whereC. in whichD. the one2. Is this factory ____ some foreign friends visited last Friday?A. thatB. whereC. whichD. the one3. Is this the factory _____ he worked ten years ago?A. thatB. whereC. whichD. the one4. The wolves hid themselves in the places _____couldn’t be found.A. thatB. whereC. in whichD. in that5. Here is so difficult a question ____.A. that no one can answerB. which nobody can answer itC. as no one can answer itD. as nobody can answer6. The reason is ____he is unable to operate the machine.A. becauseB. whyC. thatD. whether7. Antarctic ____ we know very little is covered with thick ice all the year round.A. whichB. whereC. thatD. about which8. May the fourth is the day ____ we Chinese people will never forget.A. whichB. whenC. on whichD. about which9. We are going to spend the Spring Festival in Guangzhou, _____ live my grandparents and some relatives.A. whichB. thatC. whoD. where10. He has two sons, __________ work as chemists.A. two of whomB. both of whomC. both of whichD. all of whom11. Who can think of a situation ____ this idiom can be used?A. whichB. thatC. whereD. in that12. ____ people spend so much money on their pets ____ us a lot.A. That; surprisesB. What; surprisingC. How; are surprisedD. That; is surprised13. The thought____ Lao Gao would open a Sichuan restaurant in Los Angeles surprised his wifeA. thatB. whatC. whetherD. if14. ____ we are doing has never been done before.A. ThatB. WhatC. WhichD. Whether1。
高考英语三大从句讲解+练习(附答案)【名词性从句】名词性从句相当于名词,可分别作主句的主语、表语、宾语和同位语。
因此,名词性从句成分为主语从句、表语从句、宾语从句和同位从句。
(一)引导名词性从句的连接词1、连接代词:who, whose, whom, what, which。
有词义,在从句中担任成分,如主语、表语、宾语、或定语等。
2、连接副词:when, where, why, how。
有词义,在从句中担任成分,作状语。
3、连接词:that, whether, if, as if。
that 无词义,在从句中不担任成分,有时可省略;if (whether), as if虽有词义,但在从句中不担任成分。
1. 主语从句作句子主语的从句叫主语从句。
主语从句通常由从属连词that,whether,if和连接代词what,who,which,whatever,whoever以及连接副词how,when,where,why等词引导。
that在句中无词义,只起连接作用;连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用,在从句中充当从句的成分。
例如:What he wants to tell us is not clear. 他要跟我们说什么,还不清楚。
It is known to us how he became a writer. 我们都知道他是如何成为一名作家的。
Where the English evening will be held has not yet been announced.英语晚会将在哪里举行,还没有宣布。
有时为避免句子头重脚轻,常用形式主语it代替主语从句作形式主语放于句首,而把主语从句置于句末。
主语从句后的谓语动词一般用单数形式。
常用句型如下:(1)It + be + 名词+ that从句(2)It + be + 形容词+ that从句(3)It + be + 动词的过去分词+ that从句(4)It + 不及物动词+ that 从句另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时,谓语动词要用虚拟语气“(should) +do”,常用的句型有:It is necessary (important, natural, strange, etc.) that …It is a pity (a shame, no wonder, etc.) that…It is suggested (requested, proposed, desired, etc.) that…注意:连词that, whether在从句中不担任句子成分,只起连接作用,不能省略。
定语从句跟其余名词性从句差别辨析练习〔含答案〕1.A. ① The young man found the gold watch ____he lost.C. ② The young man found the gold watch ____he lost it.A.thatB.in whichC.whereD.there2.A.thatB.whatC.to whichD.it3.A.①Useyourownmind.Neverbereadytobelieveanything____otherpeople believe.C. ② Use your own mind. Never be ready to believe anything ____ otherpeople believe itA.thatB.whichC.becauseD.when4.D. ① Is this museum____ they visited yesterday?A. ② Is this the museum____ they visited yesterday?B.③ Isthisthemuseum____theyvisitedsomeancientweaponsyesterday?A.thatB.whereC.oneD.the one5.A.thatB.whichC.whenD.where6.C. ① Yesterday our chemistry teacher asked so difficult a question____ puzzled all of us.A. ② Yesterdayourchemistryteacheraskedsodifficultaquestion____it puzzled all of us.A.thatB.whichC.asD.what7.B.① This is one of the best films ____this year.C. ② This is the one of the best films ____this year.A. have been shownB. that have been shownC. that has been shownD. which has been shown8.C. ① ____, paper was first made in China.A. ② ____that paper was first made in China.B. ③ ____is that paper was first made in China.A. It is known to us allB. What is known to us allC. As is known to us allD. That is known to us all9.A. ① WhenChristopherColumbusreachedtheplace____isnowtheUSA,he called the people of the new world“ Indians〞.D. ② WhenChristopherColumbusreached____isnowtheUSA,hecalledthepeople of t he new world“ Indians〞.A.whichB.whereC.thereD.what10."B. ① The town is no longer the one____ it was 10 years ago, ____it was quite dirty.D. ② Thetownisnolonger___itwas10yearsago;____itwasquitedirty.B. ③ The town is no longer the same ____ it was 10years ago, ____it was quite dirty.A. that; thenB. as; whenC. that; whenD. what; then11."C. ① This is the very way____ he did the experiment.C. ② This is the very way____ he told me yesterday.A. ③ This is ____ he did the experiment.A.howB.by whichC.thatD. which12."D. ① The reason ____ he failed was that he hadn’ t taken my advice.B. ② Thereasonfor____hefailedwasthathehadn’ ttakenmyadvice.A. ③ The only reason ____ he could give us was that he failed to catchthe bus.A.thatB.whichC.becauseD.why13."C. ① You should put the dictionary ____ you could find it easily.C. ② Youshouldputthedictionaryonthedesk____youcanfinditeasily.A.whichB.in whichC.whereD.there14."C. ① It is the house____ I met the young man.A. ② It was in the house____ I met the young man.A.thatB.whichC.whereD.there15."C.① It was 7:00____ I arrived in Beijing.A. ② It was at 7:00____ I arrived in Beijing.A.thatB.whichC.whenD.on which16."A.① He said nothing____ made me angryB. ② He said nothing, ____ made me angryC. ③ He said nothing, ____ had been expected.A.thatB.whichC.asD.it17."A. ① TheChicagoBullsusedtobemadeupofthebestbasketballplayersin the States, ____ are Black Americans.B. ② The Chicago Bulls used to be made up of the best basketball playersin the States, ____ Black Americans.B. ③ The Chicago Bulls used to be made up of the best basketball playersin the States, and____ are Black Americans.A. most of whomB. most of themC. most of whichD. most of it18."C. ①— Why did he say so?— Sorry, I don ’erstandund ____ hesaid. B. ②— Why did he say so?— Sorry, I don ’ t understand ____ he said means A.all whatB. what allC. all thatD. that all19."C. ① Computersmustbeofgreatuseto____dothescientificresearch.A. ② Computers must be of great use to ____ doing thescientificresearch.A. thoseB. whoC. those whoD.whomever20."B. ① You can use a larger plastic battle, ____ is cut off, as a potto grow flowers in.D. ② Youcanusealargerplasticbattle,____cutoff,asapottogrowflowers in.A. the topB. whose topC. whose the topD. with its top。
高中英语定语从句专项练习定语从句在使用时往往容易犯一些错误,最常见的有如下七种:一、在定语从句中加了多余的宾语。
如:1.误:Some of the boys I invited them didn’t come.正:2.误:The book that you need it is in the library.正:二、把定语从句谓语动词的单、复数弄错。
如:1.误:Anyone who break the law will be punished.正:2.误:Those who has finished may go home.正:3.误:He is the only one of the teachers who know French in our school.正:4.误:This is one of the rooms that is free now.正:三、误省略了定语从句中作主语的关系代词。
如:1.误:Children eat a lot of sugar often have bad teeth.正:2.误:The key opens the bike is missing.正:四、定语从句中加了多余的关系副词或介词。
如:1.误:The house where he lives in needs repairing.正:或:2.误:I still remember the day on when I first came toBeijing.正:或:五、在作先行词的时间名词或地点名词后错用了关系代词或关系副词。
1.误:I still remember the day when we spent together.正:2.误:This is the house where we lived in last year.正:六、在先行词reason 后错用关系副词why。
如:1.误:Have you asked her for the reason why may explain her absence?正:2.误:I don’t believe the reason why he has given for his beinglate.正:七、误将强调句型当定语从句。
英语定语从句改错40题及答案1 .These who have plenty of money will help their friend.2.This is the longest train which I have ever seen.3 .Which we all know, swimming is a very good sport.4.1shall never forget those years which I lived in the farm which you visited last week.5.The radio set which I bought it last week has gone wrong.答案:lthese-those 2which-that 3which-as 4first? which' -when 5drop "it'6.He paid the boy $10 for washing ten windows, most of them hadn't been cleaned fot at least a year.7.The day will come which the people all over the world will win liberation.8.Mr. Herpin is one of the foreign experts who is working in China.9.They talked for about an hour of things and persons who they remembered in the school.10.My glasses, with which I was like a blind man, fell to the ground and broke.答案:6.them-which 7which-when 8is-are 9who-that lOwith-without.11.He is a man of great experience, from who much can be learned.12. A harvester is a machine with which we harvest crops or a person which is harvesting.13.1have bought the same dress which she is wearing.14.1n the police station I saw the man from which room the thief had stolen the TV set.15.Chapin, for who money was now no problem , start a new film company with his friends.答案 : 11 who-whom 12second ' which ' -who 13which-as 14which-whose 15who-whom16.Please put the letter which he can easily find it.17.The house in the front of which there is a big tree was built more than 1000 years ago.18.Antarctic ,which we know very little is covered with thick ice all the year round.19.The reason why I was away from school is because I was ill yesterday.20.lt was a meeting that importance I didn't realize at that time答案:16.which-where 17drop “the' 18 which 前加about 19.because-that20that-whose21.She was the one I met at the party , whom you knew.22.They have decided to stay at home, that is , I think ,a wise choice.23.All the apples which fell down were eaten by the pigs.24.Did you see the man whom I nodded just now ?25.1, who is your good friend, will try my best to help you.答案:21whom-as 22 that-which23which-that 24nodded 后加to 25is-am 26.—How do you like the book?■一It's quite different from the one what I read last month.27.1s oxgen the only gas which helps fire burn?28. Til tell you all what he told me last week.29.1n the dark street, there wasn't a single person from whom she could turn for help3O.Willma became the first Americna woman to win three Olympic gold medals in track, that made her mother very happy.答案:26what-that 27which-that 28what-that 29from-to 30that-which31.She heard a terible noise , as brought her heart into her mouth.32.His parents wouldn't let him marry anyone whom family was poo匚33.The weather turned out to be very good, that was more than we could expect.34.After living in Paris for fifty years he returned to the small town which he grewup as a child.35.1shall never forget those years which I lived in the country with the farmers. 答案:31 as-which32whom-whose 33that-which 34which-where 35which-when37.Dorothy was always speaking highly of her role in the play,who ,of course , made the others unhappy.38.Recently I bought an ancient Chinese vase , the price of whose was very reasonable.39.Which has already been pointed out, grammar is not a set of dead rules.4O.He lived in London for 3 months , during that time he learned some English. 答案:37who-which 38whose-which 39which-as 40that-which41.Oh the wall hung a picture, which color is blue.42.Whenever I met him , that was fairly often, I like his sweet and hopeful smile.43.The visitor asked the guide to take his picture there stands the famous tower.44.The boss whose department Ms King worked ten years ago look down upon women.45.1don't like the way which you speak to he匚which答案:41 which-whose42that-which 43there-where 44worded 后加in 45which-in which。
定语从句改错请找出以下各句中的错误并加以改正。
1.This is the factory where we visited last week.2.This is the watch for which Tom is looking.3.The person to who you spoke is a student of Grade Two.4.The house in that we live is very small.5.The sun gives off light and warmth, that makes it possible for plants to grow.6.I ’ ve read all the books which I borrowed from the library.7.This is the best film which I have ever seen.8.My father and Mr. Smith talked about things and persons who they remembered in the country.9.Everything which we saw was of great interest.10.His dog, that was now very old, became ill and died.11.The reason which he didn’ t go to school is that he was ill.12.Those who wants to go with me put up your hands.13.The boy, his mother died last year, studies very hard.14.I have two sisters, both of them are doctors.15.We ’ re going to visit the school where your brother works there.16.He is the only one of the students who have been invited to the English Evening.17.That is the way which they work.18.Those have questions can ask the teachers for advice.19.Who is the man who has white hairs?20.I will never forget the days which we had a good time together at the sea.定语从句比较练习1.① This is one of the most interesting films _____ shown last week.②This is the very one of the most interesting films _____ shown last week.A. which wasB. that wasC. which wereD. that were2.① He has two sons, _____ are college students.②He has two sons, and _____ are college students.A. both of whichB. both of whomC. both of themD. both of it 3.① Hestill lives in the room _____ window faces to the east.②He still lives in the room, the window _____ faces to the east.③He still lives in the room _____ is in the north of the city.④He still lives in the room _____ there is a beautiful table.A. whichB. whoseC. whereD. of which4.① _____ leaves the room last ought to turn off the lights.② _____ who leaves the room last ought to turn off the lights.③_____ who leave the room last ought to turn off the lights.5.① I ’ ll never forget the days _____ we studied together.②I ’ ll never forget the days _____ we spent together.6.① This is the only way _____ you can find.②I don ’ t like the way _____ he spoke to his mother.7.① Galileo collected the facts __ proved the earth and all the other planets move around the sun.②Galileo discovered the fact _____ the earth and all the other planets move around the sun.8.① Is this museum _____ they visited last month?②The teacher tells us that _____ cleans the blackboard is to be praised.A. thatB. the oneC. whichD. the one who9. ① It was eleven o’ clock _____ they went out of the cinema.② It was at eleven o’clock _____ they went out of the cinema.A. whichB. thatC. whenD. on which10.① This is the place ________we worked last month.②This is the place ________we visited last month.11.① I have never heard such stories __________he tells.②I have never heard the stories __________he tells.A. asB. whatC. thatD. so12. ① This is such an interesting story _________I’ ll never forget.② This is such an interesting story __________I’ll never forget it.A. asB. whichC. thatD. so13.① Who is the girl ______is standing over there?②Is she the girl ______ talked to you just now?A. thatB. whoC. whomD. A and B14. ① The teacher didn’ t know the reason _______ she was absent yesterday?②The teacher couldn’ t accept the reason _______ she explained yesterday?15. ① This is _____ he said at the meeting yesterday.②This is all _____ he said at the meeting yesterday.16① He has succeeded,_____ was expected.② He has succeeded,_____ was unexpected.17.1) Is this factory ________ you visited the other day?2)Is this the factory ________ you visited the other day?3)Is this the factory ________ this kind of bikes are made?18.1) That was the reason ________ he refused to speak at the meeting.2) That was the reason ________ he gave me yesterday.19.1) ________ is known to us all, English is difficult to learn.2) ________ is known to us all that English is difficult to learn.3)______ is known to us all is that English is difficult.20.1) The weather turned out to be very good, ________ was more than we could expect.2) The weather turned out to be very good and ________ was more than we could expect.A. thatB. whichC. whoD. whom21.1) Ahead of me I saw a woman _______ I thought was my aunt.2) Ahead of me I saw a woman _______ I thought to be my aunt.A. whomB. whoC. of whomD. whose22.1) He left the money with his friend, ________ he believed was an honest man.2) He left the money with his friend, ________ he believed to be an honest man.A. whoB. thatC. whomD. which23. 1) He was ________ angry at all _______ she was doing ________ he walked out.2) He was ________ angry at _______ she was doing _______ he walked out.A. too, that, whichB. so, that, thatC. so, what, thatD. too, which, that24.1) His parents couldn't let him marry the girl , the family _______ was poor.2)He lives in the room, the window ________ faces to the south.3)He lives in the room, ________ window faces to the south.25.1) There are four athletes, ________ runs 100 metres.2)There are four athletes, and ________ runs 100 metres.A. each of whomB. each of themC. each of whichD. whose26.1) This is the same watch _____I lost yesterday, but it isn’ t mine.2) This is the same watch ____I lost yesterday. Can I take it back?A. thatB. asC. whichD. such27.1) The computer that he had had _______ didn’ t work.2) The boy whom the boss had ______ the computer is my brother.A. repairB. repairedC. repairingD. to repair答案与部分解析:1.where →that/which 或去掉 where。
高考英语名词性从句完形填空题30题(带答案)1In our daily lives, we often come across situations where we need to make decisions. ______ we choose to do can have a significant impact on our future. For example, when choosing a career, we need to consider various factors. ______ interests us most may not always be the most practical choice. However, if we follow our passion, we may find that it leads us to a fulfilling life.1. A. What B. Which C. That D. Whether答案:A。
“______ we choose to do”在句中作主语,且缺少宾语,所以用what。
which 表示在特定范围内的选择;that 在名词性从句中不充当成分;whether 表示“是否”。
2. A. What B. Which C. That D. Whether答案:A。
“______ interests us most”在句中作主语,且缺少主语,所以用what。
which 表示在特定范围内的选择;that 在名词性从句中不充当成分;whether 表示“是否”。
211. In his famous novel, the author describes a world where people live in harmony. However, there is still a question that ___ remains unanswered. What is the true meaning of happiness?A. whoB. whatC. whichD. that答案:D。
名词性从句单句改错之提升训练:1. It’s uncertain that the experiment is worth doing.is hard is to do good all one's life and never do anything bad.the boy didn't take medicine made his mother angry.he really means is what he disagrees with us.wecan finish translating the book depends on the time.is that Lu Xun once lived.7. The fact which she had not said anything surprised all of us.8. There is no doubt whether he will come tomorrow.`9. The reason why he was late was because he missed the train by one minute this morning.he wants to tell us is not clear.名词性从句单句语法填空之真题训练:1.(2016·全国Ⅰ,阅读B)We now realize ________ important family is and how important to be near them, especially when you’re raising children.2.(2016·全国Ⅱ,阅读B)Members leave books on park benches and buses, in train stations and coffee finds their book will go to the site and record where they found it.3.(2016·全国Ⅱ,阅读D)The journey was intended to achieve more than ________Captain Robert Falcon Scott had done.4.(2016·北京,29)The most pleasant thing of the rainy season is________one can be entirely dust.,5.(2016·四川,七选五)Scientists are still not exactly sure ________genes influence aging, but they believe that they do.6.(2016·江苏,21)It is often the case________anything is possible for those who hang on to hope.7.(2015·湖南,26)You have to know ________ you're going if you are to plan the best way of getting there.8.(2015·北京,33)I truly believe ________ beauty comes from within.9.(2015·重庆,8)We must find out ________ Karl is coming, so we can book a roomfor him.10.(2015·四川,8)The exhibition tells us________we should do something to stop airpollution.定语从句单句改错之提升训练:、1. This is the factory where we visited last week.2. This is the watch for which Tom is looking.3. The person to who you spoke is a student of Grade Two.4. The house in that we live is very small.5. The sun gives off light and warmth, that makes it possible for plants to grow.6. I’ve read all the books which I borrowed from the library.7. This is the best film which I have ever seen.8. My father and Mr. Smith talked about things and persons who they remembered in the country."9. Everything which we saw was of great interest.10. His dog, that was now very old, became ill and died.定语从句单句语法填空之真题训练:1.(2016·全国Ⅰ,65)My connection with pandas goes back to my days on a TV show inthe mid-1980s, ________ I was the first Western TV reporter.2.(2016·全国Ⅱ,阅读A)Simon is a comedian and actor _______has 10 years’experience of teaching comedy.3.(2016·全国Ⅱ,阅读D)Frank Hurley, a confident and gifted Australian photographerwho knew the Antarctic, was hired to make the images, most of ________have neverbefore been published.~4.(2016·全国Ⅲ,47)Some people think that the great Chinese scholar Confucius,________lived from roughly 551 to 479 B.C, influenced the development of chopsticks.5.(2016·全国Ⅲ,完形)When I was 13 my only purpose was to become the star on our football meant beating out Miller King, ________was the best player at our school.6.(2016·北京,22)I live next door to a couple________children often make a lot of noise.7.(2016·四川,阅读C)I prefer to work in black and white, ________ allows me to show different specific worlds more clearly.8.(2016·四川,阅读D)Researchers have discovered that “night milk” contains more melatonin(褪黑激素), ________has been proven to help people feel sleepy and reduce anxiety.9.(2016·江苏,23)Many young people, most of________were well-educated,headed for remote regions to chase their dreams.10.(2016·浙江,11)Scientists have advanced many theories about why human beings cry tears, none of ________ has been proved.?写作:你是李华,今年18岁,就读于红星中学。
请你写一篇自我介绍。
要求: 1. 简介自己的基本信息2. 介绍自己的英语水平3. 介绍自己的兴趣爱好4.字数不少于80字参考答案及解析名词性从句单句改错之提升训练:!改为whether 考查宾语从句引导词,whether表示“是否”改为What,表示“......的事情”,引导主语从句改为that,引导主语从句,不翻译,无实际意义.4.第二个what改为that,引导表语从句改为whether,表示“是否”,引导主语从句6.第二个that改为where,引导表语从句,其中where作从句的地点状语。
改为that,引导同位语从句。
改为that,There is no doubt that......意为“毫无疑问”,用that引导同位语从句。
、改为that,that引导表语从句。
The reason why ...Is/was that...为固定句式,意为“......的原因是......”改为What,引导主语从句,表示“......的事情”名词性从句单句语法填空之真题训练:1.how [考查宾语从句的连接词。
根据后面的how important可以看出此处也是填how。
]2.whoever [考查名词性主句中的主语从句。
句意:无论是谁发现了他们的书,都去那儿,并记录下他们是在哪儿发现的书。
]3.what [考查名词性从句,引导词在从句中做had done的宾语,故用what。
]4.that [考查名词性从句。
句意:雨季最令人愉快的事情是人可以完全免于尘埃。
分析句子结构可知is后的表语从句中不缺少成分,且句意完整,故选D ]5.how [句意:科学家仍然不确定基因是如何影响人的年龄的,但是他们相信会影响。