高考英语状语从句知识点难题汇编及解析(1)
专题11并列句和状语从句-2022届新高考英语基础记忆及题型解题技巧(含答案解析)
并列句和状语从句1．分析单词、短语或句子的逻辑关系或句式结构。
(1)完整的句子中，如果两个单词或短语并列，要填并列连词；(2)若两个句子(两个主谓结构)之间没有句号或分号，也没有连词，空格处必定填连词。
2．牢记连词词义并能熟练运用是解答题目的先决条件。
3．注意固定句式中的连词。
句子分类{简单句{ 主语+谓语主语+谓语+宾语主语+谓语+间接宾语+直接宾语主语+谓语+宾语+宾补主语+系动词+表语★★★并列连词{ 表递进或顺承关系表选择关系表转折关系表因果关系复合句{(★★★)定语从句(见后面的表)(★)名词性从句(见后面的表)(★)状语从句(见后面的表) 考点一 并列句Xiao Ming took his cellphone to school and ① he played cellphone in class ，so ① his head teacher was very angry.He said to Xiao Ming ，“Others are studying hard while ① you are playing hard.You either quit school or break the cellphone.①” Xiao Ming didn’t want to break his cellphone but ①he couldn’t quit school.He thought to himself ，“ Break it, or I will be dismissed.①” If he was dismissed ，not only would her mother cry but also his father would deliver him a spanking ①.上述所有连词在使用时，一定要注意连词所连接的成分都是同样的结构。
如果连接单词则两边都是单词，如果连接句子则两边都是句子，如果连接短语则两边都是短语。
高考英语新状语从句知识点易错题汇编附解析(1)
高考英语新状语从句知识点易错题汇编附解析(1)一、选择题1．He felt a sense of relief _______ he got his medical examination report.A．as long as B．so that C．the moment D．as if2．All bad things must come to________end, ________ terrible an experience is.A．the; whatever B．an; however C．/; how D．a; what3．There are other languages that sound extremely different, ________ they’re conveying exactly the same meaning.A．as though B．even though C．so that D．in that4．_____ 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 problem5．______ you lose in life, don’t lose faith and hope, with which you can live a happy life and achieve your goals.A．Whenever B．Wherever C．Whatever D．Whoever6．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 7．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 if8．____ 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．Wherever9．______ this approach is effective in losing weight, it is not as beneficial as keeping a balanced diet.A．Once B．While C．Unless D．Until10．––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．before11．_______ hip-hop is popular wi th youngsters, I’m still not accustomed _______ it.A．As, to appreciating B．Although, to appreciateC．Even though, to appreciating D．While, to appreciate12．- 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 before13．_____ never easy, innovation is absolutely possible with adequate training and continuous practice.A．When B．As C．Since D．While 14．Human beings are different from animals________they can use language as a tool to communicate.A．in which B．in thatC．for that D．for which15．_________ my heart still beats, I will go on working for the people.A．As soon as B．As far as C．As long as D．As much as 16．Incredible ________ it was, it was true.A．although B．though C．even though D．despite17．My parents live in a small village. They always keep candles in the house _____ there is a power out.A．if B．unlessC．in case D．so that18．You can phone your friend at work _____ you don’t make a habit of it.A．as if B．even though C．as long as D．in case19．____________ China has made advances in 5G technology, there is still a long way to go for its popularity.A．If B．Because C．Since D．While20．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 as21．________ 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 case22．One Friday, we were packing to leave for a weekend away ________ my daughter heard cries for help.A．after B．while C．since D．when23．—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．unless24．I'll be out for some time. ______ anything important happens, call me up immediately. A．In case B．As ifC．Even though D．Now that25．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．whichever【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。
2020年高考英语必考点全梳理专题13-状语从句(精讲深剖)(含解析)
专题13 状语从句——精讲深剖一．语法填空1.（2019·新课标II卷）I don't see any reason to give up work. I love coming here and seeing my family and all the friendsI have made over the years. I work not because I have to, ______ because I want to.”【答案】but【解析】考查并列连词。
根据句意逻辑可知，此处为转折关系，句意：我工作不是因为我不得不做，而是因为我想做。
此处用but与前文not 呼应，构成“不是……而是……”之意，故填but。
2.（2019·新课标III卷）On our way to the house，it was raining ______ hard that we couldn't help wondering how long it would take to get there. It was in the middle of Pearl City.【答案】so【解析】考查副词。
句意：在我们去那座房子的路上，雨下得如此大以至于我们不能不想还要多久才能到达那里。
“so…that…”意为“如此……以至于……”，引导结果状语从句。
故填so。
3．(2018·北京高考改编)________ we don't stop climate change, many animals and plants in the world will be gone.【答案】If【解析】句意：如果我们不阻止气候变化，世界上的许多动植物将会消失。
根据句意可知，此处应该用if 引导条件状语从句，表示主句内容发生的条件。
4．(2018·天津高考改编)Let's not pick these peaches until this weekend so _______ they get sweet enough to be eaten.【答案】that【解析】so that “以便；为了”，在此处引导目的状语从句。
2019高考英语：(01)二轮语法学案(状语从句)(练习题配解析或解析)
2019高考英语：（01）二轮语法学案（状语从句）（练习题配解析或解析）本单元的语法重点为状语从句状语从句可分为时间、地点、目的、原因、结果、行为方式、条件、让步、比较九种。
引导这些状语从句的连词主要有：ltislongbefore…(过了好久才……〕ltisnotlongbefore…(过了不久就……)2、till与until(till一般不放在句首)(1)持续性动词(肯定式)+until(直到……为止)(2)瞬间动词(否定式)上until(直到……才)(3)强调句型：Itisnotuntil…that…eg：Iwaiteduntil(till)hehadfinishedhiswork、我一直等到他完成工作。
FIedidn'tgotobeduntil/till1cameback、直到我回来、他才去睡觉。
ItWasnotuntillcamebackthathcwenttobeD、直到我回来、他才去睡觉。
3、since意为“自从……以来”。
since一瞬间动词过去式(从该动作发生时算起)since-一持续性动词的过去式(从该动作结束时算起)eg：Hehasbeenworkingveryhardsinceheenteredthefactory、自从他人厂以来一直努力工作。
4、if与unless都可引导条件状语从句、在许多情况下unless可以与、f…not交换使用。
但在以下情况下不可互换：(1)ifnot引导非真实条件句。
(2)unless从句中可用否定词、在、f…not从句中一般不再用否定词。
eg：I’llgounlessnooneelsedoes、除非没有其他人去我才会去。
5、在so+adj/adv+thatclause中、当把so+adj/adv、部分放在句首时、该句主句应为倒装语序。
eg：Sorapidlydid11cspeakthatwecouldhardlyunderstandhimclearly、他讲得太快、我们很难听懂。
高考英语新状语从句知识点易错题汇编及解析(1)
6．_________we relieve pressure in a proper way, we can relax ourselves and keep away from its bad effects.
A．So thatB．As long asC．Even ifD．As though
---If you don’t go, ________.
A．neither do IB．so will IC．nor will ID．so do I
14．________，she can help Mother do housework.
A．As my sister is a childB．A child as my sister is
A．WhileB．AsC．BecauseD．If
3．All bad things must come to________end, ________ terrible an experience is.
A．the; whateverB．an; howeverC．/; howD．a; what
4．House prices vary from place to place and are usually high ______ there are famous schools.
C．Child as is my sisterD．Child as my sister is
15．In boxing, players should wear gloves and mouth guards ________ anything dangeroushappens.
高考英语状语从句重难点
②我正要锁门，这时电话响了。
③我刚锁上门，这时电话响了。
时间状语从句练习一
1. (04北京春) We were swimming in the lake ______ suddenly the A storm started. A. when B. while C. until D. before 2. (02上海) He was about to tell me the secret ______ someone D patted him on the shoulder. A. as B. until C. while D. when B 3. (05上海) He transplanted the little tree to the garden ______ it was the best time for it. A. where B. when C. that D. until 4. (05福建) －Did Jack come back early last night? －Yes. It was not yet eight o’clock ____ he arrived home. B A. Before B. when C. that D. until 5. (06辽宁) He was about halfway through his C meal ______a familiar voice came to his ears. A. why B. where C. when D. while
★ 例 句 导 入 ★
时间状语从句
地点状语从句
★归纳总结★
九 种 状 语 从 句
原因状语从句
条件状语从句
让步状语从句
结果状语从句
2021届高考英语一轮温习 知识点专题练习 第19讲 状语从句经典精讲（下，含解析）(1)
2021届高考英语一轮温习知识点专题练习第19讲状语从句经典精讲（下，含解析）第19讲状语从句经典精讲（下）题一：You'll have to attend the ceremony _______ you're free or busy.A. whoeverB. whateverC. whetherD. no matter题二：We’ll continue our work _______we can find the necessary tools or not.A. whicheverB. whereverC. wheneverD. whether题三：－How long have you been studying in this senior high school?－Less than two years and a half.－So it will be half a year _______ you graduate from this school.A. whenB. afterC. beforeD. since题四：—How long do you think it’ll be _______ I can go back to work?—Well，you’ll be feeling much better by next weekend..that题五：A rainforest is usually found_______heavy rainfall is frequent.题六：Some p re-school children go to a day care center, _______ they learn simple games and songs.A. thenB. whereC. whileD. there题七：I’d like to arrive 20 minutes early _______ I can have time for a cup of tea.A. as soon asB. as a resultC. in caseD. so that题八：He spoke clearly, _______ everybody understood him.A. so thatB. in case D. in order that题九：This is an illness that can result in total blindness if_______.A. to leave untreatingB. left untreatedC. leaving untreatingD. is left untreatedWater, _______enough, can change into vapour quickly.A. when heatedB. heatingC. though to be heatedD. when is heated题十：It is rather difficult to make friends with her, but her friendship, _______, is truer than any other's.A. while gainingB. after gainingC. when to gainD. once gainedThe government managed to have two chemical factories built, though _____ by the citizens.A. being opposed to toopposed to been opposed to题十一：This is a red rose on the table. Please pass _____ to me.The information on the Internet gets around much more rapidly than in the newspaper.I like this house with a beautiful garden in front. but I don’t have enough money to buy _______ .The teacher gave the books to all the students except _______ who had already taken them.A. theseB. thatC. thisD. oneE. onesF. thoseG. it题十二：I prefer a flat in Inverness to in Perth，because I want to live near my Mom’s.Generally speaking, clothing made of man-made fibers is less expensive than _______ made of natural fibers like cotton, wool or silk.The employment rate has continued to rise in big cities thanks to the efforts of the local governments to increase _______.There is a remarkable difference between the short poems that were written in English around the year 1500 and written around 1600.A. oneB. thisC. itD. theseE. thatF. onesG. those 题十三：Tom is taller than in his class.Tom is taller th an in Class FourA. any studentsB. any other studentC. any other studentsD. any student题十四：The Mississippi River is longer than in the United States.The Mississippi River is longer than in Canada.A. any other riversB. any riverC. any other riverD. any rivers题十五：The man has money that he can buy whatever he likes.A. so muchB. such muchHe ran that I couldn’t catch up with him.A. such fastB. so fastShe is that all of us love and respect her.a good teacher B. so a good teacher题十六：There are chairs in the room that none of us want to sit down.A. such fewB. so fewI am that I can hardly keep my eyes open.A. so sleepyB. such sleepyThis is that you should attend it.A. such important a meetingB. so important a meeting题十七：I found my books I had left them.I found my books at the place I had left them.A. /B. where C which. D. at whichThis is I lived two years ago.This is the place I lived two years ago.A. in whichB. where题十八：A tall building was put up there used to be a desert.A tall building was put up at the place where there used to be a desert.A. /B. whichC. at whichD. where Bamboo grows best it is warm and where it rains often.Bamboo grows best in places where it is warm and where it rains often.A. in whichB. where题十九：, he doesn't study well.A. As he is cleverB. He is as cleverC. Clever as he isD. As clever he is, he behaved like a girl.A. Boy as he isB. He is as a boyC. As he is a boyD. As a boy he is题二十：, he talks a lot about his favorite singers after class.quiet student as he may be student as he may beC. Be a quiet student as he mayD. Quiet as he may be a student, Carolina couldn’t get the door open.A. Try as she mightB. As she might tryC. She might try asD. Might as she try题二十一：the rain stops, we will set off for the station.A. ImmediatelyB. BeforeC. UnlessD. ThoughYou are welcome to come back you want to.A. at any timeB. any timeC. by any timeD. the minuteBy the time we got to the university, the scientist .A. had leftB. has leftC. leftD. will be leaving 题二十二：I got to the bus stop, the bus starte d.A. SinceB. As soon asC. UntilD. OnceI thought her nice and honest I met her.A. first timeB. for the first timeC. the first timeD. by the first timeI’ll return the book to you the moment I itread B. have read C. read D. will have read题二十三：She bought a digital camera online ________she could save a lot of time.A. so thatB. so as toC. in order thatD. in order toShe bought a digital camera online ________ save a lot of time.A. in order toB. in order thatC. so thatD. so as to题二十四：The little boy saved every coin ________ he could buy his mother a present on Mother's day.A. so thatB. in order thatC. so as toD. in order toThe little boy saved every coin ________ buy his mother a present on Mother's day.A. so as toB. in order toC. in order thatD. so that题二十五：_____ you don’t lose heart, I’m sure that you can pass the coming examination.A. As far asB. As long asC. As soon asD. As well as________ I am concerned, Li Feng worked in Canada for five years.A. As far asB. So farC. As long asD. As well as题二十六：______ I can see, there is only one possible way to keep away from the danger.A. As long asB. As far asC. Just asD. Even ifAs is known, _____we know some basic knowledge concerning AIDS，we can protect ourselves from being infected.A. As long asB. Only ifC. UnlessD. As far as题二十七：Once again he failed to hand in his homework ________ he had been givenenough time to do it．A. in caseB. so thatC. as thoughD. even though题二十八：—It is hard to find a jod today.—I might at least get some work experience ________ I don’t get a good job.A. even thoughB. in spite of since D. just as题二十九：_______ we admi t that there are still some problems about NMET, we don't mean that it is of no use.A. UntilB. WhileC. AsD. Unless题三十：—Why didn’t you buy the dictionary?—_______ it ma y be of great use, I don’t think it good value for money.A. BeforeB. AsC. WhileD. Since题三十一：A good storyteller must be able to hold his listeners’curiosity ________ he reaches the end of the story.A. whenB. unlessC. afterD. until题三十二："You can't have this football back you promise not to kick it at my cat again," the old man said firmly.A. becauseB. sinceC. untilD. when题三十三：Most children need encouragement in time of failure _______ they can cheer up again.A. so thatB. in caseC. becauseD. if题三十四：My parents live in a small village. They always keep candles in the house_______there is apower out.A. ifB. unlessC. in caseD. so that题三十五：_______ tomorrow, our car will set out for the distant village.A. However the weather is likeB. However is the weather likeC. Whatever is the weather likeD. Whatever the weather is like题三十六：Do ____ you think is right, ____ difficulties you may have.A. what; howeverB. that; whateverC. whatever; whoeverD. what; whatever题三十七：We were swimming in the lake _______ suddenly the storm started.A. whenB. whileC. untilD. before题三十八：Jasmine was holidaying with her family in a wildlife park _______ she was bittenon the leg by an lion.A. sinceB. whileC. whenD. once题三十九：The days are gone _______the working people suffered from cold and hunger.A. whileB. at whichC. wheneverD. when题四十：I will always remember the wonderful days _______ I worked with the farmers in the countryside, _______ had a great influenc e on meA. since; itB. before; thatC. when; whichD. on which; this题四十一：_______ he was warned of the danger, he still went skating on thethin ice.B. WhetherC. ThoughD. As ifThis study shows that ______ languages may differ, the order in which young kids learn the parts of speech appears to be the same across different languages.A. sinceB. soC. thoughD. but题四十二：_______, Mother will wait for him to have dinner together.A. No matter how late is heB. No matter how he is lateC. No matter how is he lateD. No matter how late he isyou must remain calm．A. Whatever you may be frightenedB. However frightened you may beC. Whatever frightened you may beD. However you may be frightened题四十三：He had hardly seen the letter________ he started back home.A. soB. whenC. thanD. until题四十四：Hardly________ ________ the train started.A. I had reached the station; thanB. did I reach the station;beforeC. had I reached the station; whenD. I reached the station; as soon as题四十五：Jasper is a great painter. He is _______ Picasso.A. as a great asB. as great painter asC. as great a painter asD. so great a painter as题四十六：After the new technique was introduced，the factory produced _______ in 2001 as the year before.A. as twice many machinesB. twice many as machinesC. as many machines twiceD. twice as many machines题一：C详解：句意为：不管你忙不忙，都要参加那个典礼。
高考英语最新状语从句知识点易错题汇编及答案(1)
高考英语最新状语从句知识点易错题汇编及答案(1)一、选择题1．The people in the mountain village treated us like old friends _________ we were strangers to them.A．so that B．as if C．even though D．as long as2．He hasn’t got any hobbies，________you call watching TV a hobby.A．when B．ifC．unless D．since3．—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．while4．There are other languages that sound extremely different, ________ they’re conveying exactl y the same meaning.A．as though B．even though C．so that D．in that5．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．House prices vary from place to place and are usually high ______ there are famous schools. A．where B．when C．which D．whether7．The young lady rushed into the room _____ she heard the noise.A．right away B．at once C．immediately D．at the moment 8．_____ 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 problem9．Under the regulation, restaurants and hotels shall stop offering throwawayitems_______customers request them.A．since B．once C．unless D．until10．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．when11．_____ we have specific tasks to do, our leader makes sure we don’t lose s ight of the big picture.A．Until B．Unless C．Although D．Whether12．- 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．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, as14．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．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．before 16．—Why do people like pop music? I hate it so much.—______ it is not your sty le, that doesn’t mean it is bad.A．Only if B．Even though C．Nov that D．In case17．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; 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．He felt a sense of relief _______ he got his medical examination report.A．as long as B．so that C．the moment D．as if20．_________ my heart still beats, I will go on working for the people.A．As soon as B．As far as C．As long as D．As much as 21．—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．before22．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 as 23．The car in front of us came to________ we almost hit it.A．such a sudden stop that B．a stop so sudden thatC．such a sudden stop as D．so sudden a stop as24．One Friday, we were packing to leave for a weekend away ________ my daughter heard cries for help.A．after B．while C．since D．when25．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．once【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】考查从属连词。
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高考英语状语从句知识点难题汇编及解析(1)一、选择题1．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．whichever2．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 if3．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 4．There are other languages that sound extremely different, ________ they’re conveying exactly the same meaning.A．as though B．even though C．so that D．in that5．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; found6．The leaders of Catalonia said that he had decided to delay the declaration of independence______ they could have a further negotiation with Spanish government.A．in case B．in order to C．so that D．not until7．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 case8．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．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．while10．______ you lose in life, don’t lose faith and hope, with which you can live a happy life and achieve your goals.A．Whenever B．Wherever C．Whatever D．Whoever 11．Under the regulation, restaurants and hotels shall stop offering throwawayitems_______customers request them.A．since B．once C．unless D．until 12．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．whatever13．____ 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．Wherever14．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．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．before16．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 when17．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 18．Incredible ________ it was, it was true.A．although B．though C．even though D．despite 19．—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．Because22．You can phone your friend at work _____ you don’t make a habit of it.A．as if B．even though C．as long as D．in case23．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 as 24．The car in front of us came to________ we almost hit it.A．such a sudden stop that B．a stop so sudden thatC．such a sudden stop as D．so sudden a stop as25．_____ 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．Whether【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】考查状语从句。
句意：在全球经济中，一种治疗癌症的新药，无论在何处被发现，都将在世界各地创造许多经济上的可能性。
此处考查－ever引导的让步状语从句。
通过分析从句，可知句子不缺少主干成分，故排除代词A、B、D三项，故答案选C。
2．D解析：D【解析】【分析】【详解】考查连词词义辨析。
句意：一家中国公司发明了一种新的面部识别系统，即使人们戴着口罩也能识别他们。
A. provided that如果；B. in case以防万一；C. as though好像；D. even if 即使。
分析句子可知，此处是一个让步状语从句，表示“即使”。
故选D。
3．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。
故选B项。
4．B解析：B【解析】【分析】【详解】考查连词。
句意：有些语言听起来非常不同，即使它们传达的意思完全相同。
A. as though 好像，仿佛；B. even though尽管，即使；C. so that以便，所以；D. in that因为，由于，既然。