高考英语新状语从句知识点单元汇编附答案解析(1)
高考英语状语从句知识点真题汇编附解析
高考英语状语从句知识点真题汇编附解析一、选择题1．Many countries have a Mother’s Day, ________ they don't always fall on the second Sunday in May.A．when B．though C．as D．once2．Jim put a table and chair in the spare room ________ his son could have a private place to study.A．even if B．only if C．for fear that D．in order that3．A Chinese company has created a new facial recognition system that can identify people______ they are wearing masks.A．provided that B．in case C．as though D．even if4．He differed _________ other people __________ he always looked further ahead in his work. A．from; in which B．from; in that C．with; in which D．with; in that 5．The basic model function of the hero seems to remain constant, ______ the precise qualities of hero may vary over time.A．in case B．as if C．so that D．even though 6．—Shall I ________ the raincoat?—No hurry. Leave it ________ it is. It looks like rain.A．put away; in the place B．put away; whereC．put on; where D．put on; there7．Mary rushed home______ she heard the news, only ______ that her husband was gone. A．as soon as; finding B．immediately; to findC．the moment; find D．when; found8．-I’d like to find a job in the library.-Good idea, ______ it doesn’t affect your studies.A．now that B．as soon as C．as long as D．even if9．We should protect our environment from being polluted ________ our next generation will enjoy a blue sky and live a healthy life.A．as if B．so that C．even if D．in case 10．Modern science has found that _______ one is using chopsticks, over 30 joints and over 50 muscles are used, which is a favorable stimulation to the brain.A．since B．although C．unless D．while11．The purpose of the research project has a more different meaning for them than _________. A．that for us B．it has for us C．it did for us D．it did for ours 12．Prin ce Harry and his wife, Meghan, will give up the name “royal” ____ they withdraw from official duties and embrace new lives, the couple confirmed on Friday.A．unless B．while C．as D．although13．The sales of houses in our city fell by 40 percent last month, and it will be 48 percent ______ we don’t count low-price houses provided for poor residents.A．as B．unless C．if D．before14．I'll be out for some time. ______ anything important happens, call me up immediately.A．In case B．As ifC．Even though D．Now that15．China is playing a key role in controlling the virus. However, it will take long and much effort ________ it is under control.A．until B．after C．before D．unless16．Many adults agree that teenagers shouldn't live alone they have their parents’ permis sion. A．if B．unless C．in case D．now that 17．They decide to have more workers for the project ____ it won’t be delayed.A．even if B．as if C．now that D．so that18．______the phone call, the construction site is crowded with workers full of joy and excitement.A．On receiving B．As soon as receiving C．The Moment he receivedD．Receiving19．In boxing, players should wear gloves and mouth guards ________ anything dangerous happens.A．in vain B．in a word C．in debt D．in case 20．—Why didn’t you try to finish the compo sition?— I tried to, but ________ I could, the bell ran announcing the end of the examination.A．until B．whenC．after D．before21．________ birds use their feathers for flight, some of their feathers are for other purposes. A．Once B．If C．Although D．Because22．You won’t find paper cutting difficult _____you keep practicing it.A．even if B．as long as C．as if D．ever since 23．—Have you known each other for long?—Not very long, ________ we started to work in the company.A．after B．before C．when D．since24．You’d better get it prepared ahead of time just ____ something unexpected happens.A．as if B．in case C．even though D．as long as25．_____ you feel that your friend is mean at times, cherishing your friendship is a normal part of life.A．Even though B．Now that C．As though D．In case【参考答案】***试卷处理标记，请不要删除一、选择题1．B解析：B【解析】【分析】【详解】考查连接词辨析。
高考英语三大从句(名词性从句、定语从句、状语从句)讲解+练习(附答案)
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。
高考英语新状语从句知识点分类汇编含答案
高考英语新状语从句知识点分类汇编含答案一、选择题1．____ I look back to those days as a child, I really hope to spare more time to accompany my father.A．However B．Whenever C．Whatever D．Wherever 2．Manchester United has decided that Wayne Rooney will not be sold to any other club no matter how much money is offered or ______ the potential risks of keeping an unhappy player. A．however B．whether C．what D．whatever3．______the damage is done, it will take many years for the farmland to recover.A．UntilB．UnlessC．OnceD．Although4．A Chinese company has created a new facial recognition system that can identify people______ they are wearing masks.A．provided that B．in case C．as though D．even if5．There are other languages that sound extremely different, ________ they’re conveying exact ly the same meaning.A．as though B．even though C．so that D．in that6．_____ I once made some mistakes, I won’t spend a moment of the future regretting what might have been.A．Until B．While C．Unless D．Because 7．Believe it or not, some English idioms are very difficult to understand ______ you know the meaning of each word.A．as if B．in case C．now that D．even if8．Mary rushed home______ she heard the news, only ______ that her husband was gone. A．as soon as; finding B．immediately; to findC．the moment; find D．when; found9．Under the regulation, restaurants and hotels shall stop offering throwawayitems_______customers request them.A．since B．once C．unless D．until10．You should take control of your life _________ it is planning coursework or picking a major. A．whenever B．whether C．whatever D．no matter11．_____ you feel that your friend is mean at times, cherishing your friendship is a normal part of life.A．Even though B．Now that C．As though D．In case12．______ the environmental impacts of larger plastics are well documented, very little is understood about the dangers associated with micro plastics.A．While B．As C．Because D．If13．_____ we have specific tasks to do, our leader makes sure we don’t lose sight of the big picture.A．Until B．Unless C．Although D．Whether14．It was not ________ she took off her glasses ________ I realized she was a famous film star．A．when; that B．until; thatC．until; when D．when; then15．______ this approach is effective in losing weight, it is not as beneficial as keeping a balanced diet.A．Once B．While C．Unless D．Until16．The sales of houses in our city fell by 40 percent last month, and it will be 48 percent ______ we don’t count low-price houses provided for poor residents.A．as B．unless C．if D．before 17．Mother Teresa _______ great contribution to the world peace, _______ she was awarded the Nobel Price in 1979.A．might have made, because B．must have made, forC．could have make, since D．should have make, as18．It won't be long _our summer vacation begins, but my vacation plans are still up in the air. A．when B．until C．that D．before19．So sudden ________that the enemy had no time to escape.A．did the attack B．the attack didC．was the attack D．the attack was20．In boxing, players should wear gloves and mouth guards ________ anything dangerous happens.A．in vain B．in a word C．in debt D．in case21．__________, he is famous for writing blogs.A．As he is a teacher B．A teacher as he isC．Teacher although he is D．Teacher as he is22．He felt a sense of relief _______ he got his medical examination report.A．as long as B．so that C．the moment D．as if 23．Incredible ________ it was, it was true.A．although B．though C．even though D．despite24．________ the job takes a significant amount of time, most students agree that the experience is worth it.A．If only B．AfterC．Although D．In case25．These masterpieces in the Louvre Museum reach out to us across the centuries ______ time itself were nothing.A．even if B．even though C．as though D．only if【参考答案】***试卷处理标记，请不要删除一、选择题1．B解析：B【解析】【分析】【详解】考查状语从句连词。
高考英语专题状语从句知识点全集汇编及答案解析
高考英语专题状语从句知识点全集汇编及答案解析一、选择题1．China is playing a key role in controlling the virus. However, it will take long and much effort ________ it is under control.A．until B．after C．before D．unless2．—We have decided to go for a picnic tomorrow, Jack. Are you going with us?—Well, ______ you are going, so will I.A．when B．since C．if D．while3．______ the environmental impacts of larger plastics are well documented, very little is understood about the dangers associated with micro plastics.A．While B．As C．Because D．If4．Steve Jobs is a key figure in the computer world _____ he has had a great influence on modern life and technology.A．on condition that B．in caseC．in that D．as long as5．_____ I once made some mistakes, I won’t spend a moment of the future regrettin g what might have been.A．Until B．While C．Unless D．Because6．We should protect our environment from being polluted ________ our next generation will enjoy a blue sky and live a healthy life.A．as if B．so that C．even if D．in case7．The purpose of the research project has a more different meaning for them than _________. A．that for us B．it has for us C．it did for us D．it did for ours 8．______, his ideas was accepted by all the people at the meeting.A．Strange as might it sound B．As it might sound strangeC．As strange it might sound D．Strange as it might sound9．_____ you feel that your friend is mean at times, cherishing your friendship is a normal part of life.A．Even though B．Now that C．As though D．In case 10．These masterpieces in the Louvre Museum reach out to us across the centuries ______ time itself were nothing.A．even if B．even though C．as though D．only if11．______ this approach is effective in losing weight, it is not as beneficial as keeping a balanced diet.A．Once B．While C．Unless D．Until12．He hasn’t got any hobbies，________you call watching TV a hobby.A．when B．ifC．unless D．since13．In the global economy, a new drug for cancer, ________ it is discovered, will create many economic possibilities around the world.A．whatever B．whoeverC．wherever D．whichever14．Elephants usually won’t attack a person ________ one becomes a danger to them.A．until B．although C．unless D．when15．Peter had been puzzled over the problem for over an hour___________ all at once the solution flashed across his mind.A．when B．while C．then D．as16．Tom was so angry____ he heard his friend betrayed him____ he tore the letter into two immediately.A．that; when B．that; that C．when; what D．when; that17．__________, he is famous for writing blogs.A．As he is a teacher B．A teacher as he isC．Teacher although he is D．Teacher as he is18．—Why didn’t you try to finish the composition?— I tried to, but ________ I could, the bell ran announcing the end of the examination.A．until B．whenC．after D．before19．________ the sales figure of the new range of products is relatively small, the potential market is large.A．Unless B．After C．Since D．While 20．—Have you known each other for long?—Not very long, ________ we started to work in the company.A．after B．before C．when D．since21．Most students are making great efforts to study on line _____ their eyes suffer a lot after long hours' focus on the computer or phone.A．in case B．even if C．now that D．so that22．________ the job takes a significant amount of time, most students agree that the experience is worth it.A．If only B．AfterC．Although D．In case23．One Friday, we were packing to leave for a weekend away ________ my daughter heard cries for help.A．after B．while C．since D．when 24．—Nowadays some parents keep their children under their wings. These helicopter parents even protect their children from the knowledge ________ they have failed.—Absolutely. They should know that setbacks and failures are part and parcel of adolescent growth.A．where B．when C．that D．which25．_______ hip-hop is popular with youngsters, I’m still not accustomed _______ it.A．As, to appreciating B．Although, to appreciateC．Even though, to appreciating D．While, to appreciate【参考答案】***试卷处理标记，请不要删除一、选择题1．C解析：C【解析】【分析】【详解】考查连词辨析。
高考英语语法一轮复习——状语从句讲解(附答案)
状语从句由从句担任的状语，在句子中可修饰谓语（或其它动词）、形容词、副词或是整个句子，它可以用来表示时间、地点、原因、目的、结果、条件、方式、比较、让步等。
第一讲时间, 地点状语从句时间状语从句：when, while, as, before, after, since , wheneveruntil, till, by the time(注意时态)as soon as, had hardly…when, had no sooner…than, (on doing sth…)the moment, every time/ each time, the first time, oncee.g: When he came, I had cleaned the classroom.He didn’t stop working until his mother came bake.He worked until his mother came back.As soon as he returned, he bought a new flat.He had no sooner returned than he bought a new flatHe came to scene the moment he heard the news.I thought her nice and honest the first time I met him.Once he makes up your mind, he won’t change his min d.It was two years before I met him again. = Two years passed before I met him again.注意点1. when引导的从句动词可以是延续性的或短暂性的，while引导的从句中动词必须是延续性的；while有时并不表示时间，而表示对比，表示“而”、“却”。
高考英语新定语从句知识点技巧及练习题附答案解析(1)
高考英语新定语从句知识点技巧及练习题附答案解析(1)一、选择题1．The book has helped me greatly in my daily communication, especially at work ________ a good impression is a must.A．which B．when C．as D．where2．Such a film ___________ was shown in the cinema yesterday is not suitable for children. A．as B．that C．which D．/3．The book tells stories of the earthquake through the eyes of those lives were affected A．whose B．thatC．who D．which4．Optimism is the essential ingredient of top performers,__________we assume separates the high achievers from the rest.A．as B．who C．which D．that5．The background music is such wonderful music _______ is played in the background to put you in a particular mood.A．what B．that C．as D．which6．They overcame some difficulties and completed the work ahead of time, ________ was something we had not expected.A．that B．whichC．it D．what7．We all have times of insecurity in life, _____ there is nothing to do but bravely face the feelings of doubt.A．which B．when C．where D．that8．He bought a new building _____top is different from those of the others around.A．what B．which C．that D．whose9．My brother bought a telescope, ______ he could study the star in the night sky.A．of which B．through which C．in which D．on which 10．Sales director is a position _______ communication ability is just as important as sales. A．which B．that C．when D．where11．She's always suggesting ways ______ I can improve my cooking. I know she means well but this really annoys me.A．that B．which C．how D．when12．You'll find taxis waiting at the bus station ________ you can hire to reach your host family. A．which B．whereC．when D．as13．Dr. Rowan, ______ secretary resigned two weeks ago, has had to do all his own typing. A．whose B．of whom C．of which D．which14．The other two areas ________ the two varieties differ are spelling and pronunciation.A．in that B．from which C．with which D．in which 15．One day, my two brothers and I were coming back from the islands _______ we often risked going and got more fish than othersA．which B．when C．in which D．where16．John invited about 40 people to his wedding, most of _______are family members.A．who B．which C．whom D．what17．It is a truly delightful place, ________looks the same as it must have done 100 years ago with its winding streets and pretty cottages.A．as B．whereC．that D．which18．Nowadays,villagers are proud of their culture and are actively protecting it,_______in turn improves the local tourism.A．that B．which C．where D．what19．The anti-epidemic fight is like a time-limited race _______ all medical care personnel make every effort to people's lives.A．that B．when C．which D．where20．We have entered into an age _______ dreams have the best chance of coming true. A．which B．what C．when D．that21．Faye’s fondest memory is of last year, ______ the club gave a tea party for her birthday. A．that B．which C．where D．when22．The students enjoyed this new game, _________ was named after the school.A．where B．whose C．which D．who 23．Eventually, the butterfly manages to reach the place____________ it will spend the winter. A．which B．when C．that D．where24．This is the last factory ________ he used to work at, many workers of _______ still have a good relationship with him.A．/; it B．which; whom C．/; which D．which; that 25．We have entered an age _________ dreams have the best chance of coming true.A．which B．that C．when D．how【参考答案】***试卷处理标记，请不要删除一、选择题1．D解析：D【解析】【分析】【详解】考查定语从句用法。
高考英语状语从句知识点单元汇编及答案
高考英语状语从句知识点单元汇编及答案一、选择题1．So sudden ________that the enemy had no time to escape.A．did the attack B．the attack didC．was the attack D．the attack was2．—We have decided to go for a picnic tomorrow, Jack. Are you going with us?—Well, ______ you are going, so will I.A．when B．since C．if D．while3．______ the environmental impacts of larger plastics are well documented, very little is understood about the dangers associated with micro plastics.A．While B．As C．Because D．If4．All bad things must come to________end, ________ terrible an experience is.A．the; whatever B．an; however C．/; how D．a; what5．I will try my best to get lo the station ahead of time ____ I have to walk all the way there. A．so that B．as though C．even if D．in case6．Do not make complaints about being left out___you shy away from sharing your joys and sorrow with others.A．when B．unless C．once D．until7．_________we relieve pressure in a proper way, we can relax ourselves and keep away from its bad effects.A．So that B．As long as C．Even if D．As though8．I can’t figure out why some foreigners must go out_______staying at home is the safest way during the outbreak of the virus.A．until B．before C．unless D．when9．Many countries have a Mother’s Day, ________ they don't always fall on the second Sun day in May.A．when B．though C．as D．once10．––Why does Jack Ma still work so hard he has already owned so much money?–– Maybe he pursues more than money.A．while B．as C．when D．before 11．Mother Teresa _______ great contribution to the world peace, _______ she was awarded the Nobel Price in 1979.A．might have made, because B．must have made, forC．could have make, since D．should have make, as12．- Have you known each other for long?- Not really. ________ we started to work in this school.A．Just after B．Just when C．Ever since D．Just before 13．Tom was so angry____ he heard his friend betrayed him____ he tore the letter into two immediately.A．that; when B．that; that C．when; what D．when; that 14．The secretary made a note of it _____ she should forget.A．in order that B．in caseC．so that D．ever when15．______the phone call, the construction site is crowded with workers full of joy and excitement.A．On receiving B．As soon as receiving C．The Moment he receivedD．Receiving16．In boxing, players should wear gloves and mouth guards ________ anything dangerous happens.A．in vain B．in a word C．in debt D．in case17．_________I saw him, I knew he was the man the police were looking for.A．The place B．The week C．The day D．The instant 18．He was deeply struck by the natural beauty of the West Lake___________he went to Hangzhou.A．at the first time B．the first time C．for the first time D．at the first time when19．—Why didn’t you try to finish the composition?— I tried to, but ________ I could, the bell ran announcing the end of the examination.A．until B．whenC．after D．before20．________ the sales figure of the new range of products is relatively small, the potential market is large.A．Unless B．After C．Since D．While21．________ birds use their feathers for flight, some of their feathers are for other purposes. A．Once B．If C．Although D．Because 22．You won’t find paper cutting difficult _____you keep practicing it.A．even if B．as long as C．as if D．ever since 23．You’d better get it prepared ahead of time just ____ something unexpe cted happens.A．as if B．in case C．even though D．as long as 24．—Do you think the weather will be fine this spring?—No, we are fortunate. The weatherman forecasts there will be several sand storms.A．if B．as C．though D．unless25．______would like to devote his whole life to his country should go______there are all kinds of difficulties.A．Who;some B．Whoever;whereC．Whatever; anywhere D．Who;there【参考答案】***试卷处理标记，请不要删除一、选择题1．C解析：C【解析】【详解】考查倒装句。
高考英语难点：状语从句5大考点全解析(附实例讲解)
1考查状语从句中连词的选择1.条件状语从句(1)we don’t stop climate change, many animals and plants in the world will be gone.（2018 年北京卷单项填空第 2 题改编）【分析】句意：如果我们不抵制气候变化，世界上很多动植物将会消失。
根据句意，空白处应填连词 If，意为“如果”。
(2)you can sleep well, you will lose the ability to focus, plan and stay motivated after one or two nights.（2018 年江苏卷单项填空第 29 题改编）【分析】句意：如果你睡不好，一两个晚上之后你就不能专注、计划和保持活力。
根据句意，空白处应填连词 Unless，意为“如果不，除非”。
(3)Make sure you save all your work on screen the computer breaks down.（2018 年 3 月天津卷单项填空第 13 题改编）【分析】句意：确保保存你桌面上所有的文件，以防电脑系统瘫痪。
根据句意，空白处应填连词 in case/for fear that，意为“以免，以防”。
(4)You won’t find paper cutting difficult you keep practicing it.（2015 年北京卷单项填空第 28 题改编）【分析】句意：只要 / 如果你继续练习，你就不会觉得剪纸很难学。
根据句意，空白处应填连词 so long as/as long as/if，意为“只要 / 如果”。
2.时间状语从句(1)Last winter I went there again, they had a big separate house to raise dozens of chickens.（2018 年全国卷Ⅰ 短文改错改编）【分析】句意：去年冬天，当我再次回去的时候，他们有一个单独的房子，里面养了几十只鸡。
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高考英语新状语从句知识点单元汇编附答案解析(1)一、选择题1．Peter had been puzzled over the problem for over an hour___________ all at once the solution flashed across his mind.A．when B．while C．then D．as2．Jim put a table and chair in the spare room ________ his son could have a private place to study.A．even if B．only if C．for fear that D．in order that3．______ the environmental impacts of larger plastics are well documented, very little is understood about the dangers associated with micro plastics.A．While B．As C．Because D．If4．______the damage is done, it will take many years for the farmland to recover.A．UntilB．UnlessC．OnceD．Although5．He differed _________ other people __________ he always looked further ahead in his work. A．from; in which B．from; in that C．with; in which D．with; in that 6．—Did you return Fred’s call?—I didn’t need to ____ I’ll see him tomorrow.A．though B．unless C．when D．because 7．Believe it or not, some English idioms are very difficult to understand ______ you know the meaning of each word.A．as if B．in case C．now that D．even if8．I was so proud _______ my team won the ice hockey competition. It made me feel like I could achieve anything.A．while B．when C．before D．until9．_____ you may meet, you should face the challenge bravely.A．However a serious problem B．What a serious problemC．However serious a problem D．What serious a problem10．The purpose of the research project has a more different meaning for them than _________. A．that for us B．it has for us C．it did for us D．it did for ours 11．_____ we have specific tasks to do, our leader makes sure we don’t lose sight of the big picture.A．Until B．Unless C．Although D．Whether12．He hasn’t got any hobbies，________you call watching TV a hobby.A．when B．ifC．unless D．since13．It won't be long _our summer vacation begins, but my vacation plans are still up in the air. A．when B．until C．that D．before14．The secretary made a note of it _____ she should forget.A．in order that B．in caseC．so that D．ever when15．—Why do people like pop music? I hate it so much.—______ it is not your style, that doesn’t mean it is bad.A．Only if B．Even though C．Nov that D．In case16．They decide to have more workers for the project ____ it won’t be delayed.A．even if B．as if C．now that D．so that17．_____ never easy, innovation is absolutely possible with adequate training and continuous practice.A．When B．As C．Since D．While18．__________, he is famous for writing blogs.A．As he is a teacher B．A teacher as he isC．Teacher although he is D．Teacher as he is19．He felt a sense of relief _______ he got his medical examination report.A．as long as B．so that C．the moment D．as if 20．Incredible ________ it was, it was true.A．although B．though C．even though D．despite21．________ birds use their feathers for flight, some of their feathers are for other purposes. A．Once B．If C．Although D．Because22．You won’t find paper cutting difficult _____you keep practicing it.A．even if B．as long as C．as if D．ever since 23．—Have you known each other for long?—Not very long, ________ we started to work in the company.A．after B．before C．when D．since24．Most students are making great efforts to study on line _____ their eyes suffer a lot after long hours' focus on the computer or phone.A．in case B．even if C．now that D．so that25．____ I look back to those days as a child, I really hope to spare more time to accompany my father.A．However B．Whenever C．Whatever D．Wherever【参考答案】***试卷处理标记，请不要删除一、选择题1．A解析：A【解析】【分析】【详解】考查状语从句连词。
句意：Peter已经被这个问题困扰一个多小时了，突然解决方法从他脑海里闪过。
A. when当……时候；B. while当……时候，尽管，然而；C. then然后；D. as 当，因为，尽管。
分析句子可知，此处考查固定句型had done…when…“已经/刚做完某事……（突然）就……”，故选A项。
2．D解析：D【解析】【分析】【详解】考查目的状语从句的从属连词。
句意：吉姆在空房间里放了一张桌子和一把椅子，以便他的儿子有一个私人的地方学习A. even if即使，虽然，尽管；B. only if只要……就，只有；C. for fear that以免，以防万一，只怕；D. in order that以便，为了。
根据his son could have a private place to study可知是表示目的，因此要用引导目的状语的连词in order that。
故选D项。
3．A解析：A【解析】【分析】【详解】考查让步状语从句。
句意：虽然较大的塑料对环境的影响已有详细记录，但对于微塑料的危害却知之甚少。
A. While尽管；B. As由于；C. Because因为；D. If如果。
此处是while“尽管”引导的让步状语从句。
故选A。
4．C解析：C【解析】【分析】【详解】考查连词辨析。
句意：一旦农田被毁坏，将需要许多年的时间才能得以恢复。
A. until 到……为止，直到……才，在……以前；B. unless如果不，除非；C. once一旦，一经……便；D. although虽然，然而，尽管。
前后是时间先后关系，故选C。
【点睛】本题考查连词在句子中的应用，要先了解每个选项的意思，然后在具体语境中选出合适的选项。
选项中词语都是引导状语从句的连词，学生需要分析其在句中作何种状语从句并结合语境分析。
5．B解析：B【解析】【分析】【详解】考查动词短语辨析和原因状语从句。
句意：他与别人的不同之处在于他在工作中总是看得更远。
第一空是differ相关短语的辨析：differ from与……不同， differ with与（某人）持不同意见，与……不一致；第二空：in that意思为：因为；由于；既然，后接从句；in which常引导定语从句。
分析句子结构，后面是原因状语从句，应用in that。