10 高考核心语法知识点精练10（状语从句）- 高考英语一轮复习核心语法知识精讲精练(通用版）

这是一份10 高考核心语法知识点精练10（状语从句）- 高考英语一轮复习核心语法知识精讲精练(通用版），共17页。
高考核心语法知识点精练10
（状语从句）
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.once
2.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
3.______ this approach is effective in losing weight, it is not as beneficial as keeping a balanced diet.
A.Once B.While C.Unless D.Until
4.____ 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
5._____I had more money, I could buy a car.
A.Only if B.If ever C.If only D.Even if
6._____ 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
7.You should try to get a good night’s sleep ______ much work you have to do.
A.however B.no matter
C.although D.whatever
8.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
9._____ 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.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.when
11.You should take control of your life _________ it is planning coursework or picking a major.
A.whenever B.whether C.whatever D.no matter
12.______, his ideas was accepted by all the people at the meeting.
A.Strange as might it sound B.As it might sound strange
C.As strange it might sound D.Strange as it might sound
13.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
14.Last Sunday he made a promise _______ he was free he would take me to Beijing for a visit.
A.if B.when C.that if D.whether
15._______ they are nutritious is not a factor temping enough to get you eating more fruit and vegetables, here’s some news that may convince you -- they make you look good too.
A.That B.As whether C.Whether D.If that
16.It was ten years they got married.
A.when B.that C.since D.before
17.The train had left the station I got there.
A.as soon as B.immediately
C.the moment D.by the time
18.Under the regulation, restaurants and hotels shall stop offering throwaway items_______customers request them.
A.since B.once C.unless D.until
19.Unfortunately,____________we should expect gratitude,we often find the opposite.
A.what B.that C.how D.where
20.Tom is so independent that he never asks his parents' opinion he wants their support.
A.since B.once C.unless D.after
21.______ 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
22._____ you may meet, you should face the challenge bravely.
A.However a serious problem B.What a serious problem
C.However serious a problem D.What serious a problem
23.The young lady rushed into the room _____ she heard the noise.
A.right away B.at once C.immediately D.at the moment
24.____, Mary couldn’t get the door open.
A.Try as she might B.As she might try C.She might as try D.Might she as try
25.—May I borrow your book Steve Jobs? —________you return it before Friday.
A.If only B.Unless C.On condition that D.Now that
26.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.while
27._________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 though
28.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.until
29.—Mr. Robert, I’d like to take a gap year to volunteer for a global anti-Aids campaign.
—That’s great, ______ you can afford the time.
A.provided that B.in case C.even if D.so that
30.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
31. the students came from different countries, they got along quite well in the summer camp.
A.Because B.Unless C.Once D.While
32.As President, he appointed men to high government positions ________ he considered most capable, ________ some of them openly defied his authority.
A.which … as though B./ … though
C.which … even if D.whom … as though
33.Important _______ having an ambition is, it must be channeled in the right direction. Otherwise, it would ruin ourselves and others.
A.though B.if
C.when D.while
34.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 until
35.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.until
36.He flashed me a quick smile but rapidly swallowed it___________ he saw my expression.
A.when. B.unless. C.if D.until
37.— When did you go to bed last night?
— I didn’t go to bed my father got home.
A.while
B.after
C.when
D.until
38.I can still remember my childhood life,_________it was so long ago.
A.if only B.as though C.even though D.in case
39.House prices vary from place to place and are usually high ______ there are famous schools.
A.where B.when C.which D.whether
40.-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 if
41.Mary rushed home______ she heard the news, only ______ that her husband was gone.
A.as soon as; finding B.immediately; to find
C.the moment; find D.when; found
42.After experiments on COVID-19, medical experts conclude that the chances of survival will be great, ______the infected person tests positive twice.
A.as though B.even if C.in case D.so that
43.—Shall I ________ the raincoat?
—No hurry. Leave it ________ it is. It looks like rain.
A.put away; in the place B.put away; where
C.put on; where D.put on; there
44.________ 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
45.______others feel impossibility, Chinese people have learned to look for new opportunity.
A.Why B.Where C.Until D.Unless
46.Just underwater grass floats on the surface if it loses its roots, a nation is lost without its memories.
A.since B.while C.as D.when
47.The government calls on us to avoid visiting crowded areas and medical institutions _______ it is necessary.
A.while B.because C.unless D.when
48.Chinese students overseas are encouraged to return, ______ they honestly fill out medical forms and strictly follow the quarantine rules.
A.though B.as long as C.unless D.the moment
49.Not until ________________________ at the top of my voice __________________ his head.
A.did I shout…that he turned B.I shouted…did he turn
C.did I shouted…he did turn D.I was shouting…he had turned
50.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 if
51._____ 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
52.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 case
53.I loved this picture ________ I saw it.
A.first time B.the first time C.at the first time
54.—Did you return Fred’s call?
—I didn’t need to ____ I’ll see him tomorrow.
A.though B.unless C.when D.because
55.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
56.Kate lost all his three games to AlphaGo, world's top human player _____.
A.although is he B.so he is C.as he is D.as is he
57.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 that
58.All bad things must come to________end, ________ terrible an experience is.
A.the; whatever B.an; however C./; how D.a; what
59.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
60.Rice doesn’t grow well ________ there is not enough water.
A.where B.in which C.on which D.so

答案与解析：
1.B【解析】考查连接词辨析。句意：许多国家都有母亲节，尽管它们并不总是在五月的第二个星期天。A. when当……时候；B. though尽管；C. as正如，当……时候；D. once一……就……。本句为让步状语从句，表示“尽管”应用though引导。故选B。
2.C【解析】考查状语从句。句意：我们城市的房屋销售量上个月下降了40%，如果不计算为贫困居民提供的低价房屋，销售量将会下降48%。A. as当……时候；B. unless除非；C. if如果；D. before在……之前。分析句意可知，此处引导条件状语从句，表示“如果”，应用if。故选C。
3.B【解析】考查状语从句连词。句意：虽然这种方法在减肥方面很有效，但是它不如保持均衡的饮食更有益。A. Once一旦；B. While虽然；C. Unless除非；D. Until直到。根据句意和句子结构可知，此处用while“虽然”，引导让步状语从句，符合语境和语法，故选B项。
4.B【解析】考查状语从句连词。句意：无论何时我回顾童年的日子，我都希望可以腾出时间来陪我的父亲。分析句子可知，此处是让步状语从句连词，从句I look back to those days as a child成分完整，但需添加“无论何时”句意才完整，故选B项。
5.C【解析】考查状语从句的从属连词。句意：要是我有更多钱就好了，我就可以买一辆车。A. Only if只有，除非；B. If ever如果曾经有；C. If only要是……就好了；D. Even if尽管。分析句子可知，此处是与现在事实相反的虚拟语气，再结合句意可知，此处用if only“要是……就好了”符合语境和语法要求，故选C项。
6.C【解析】考查状语从句。句意：虽然我们都有特定的任务要做，但我们的领导确保我们不要忘记大局。A. Until直到……为止；B. Unless 除非；C. Although 尽管；D. Whether不论，是否。根据句意，此处表示“虽然，尽管”，引导让步状语从句。故选C。
7.A【解析】考查让步状语从句。句意：无论你有多少工作要做，你都应该尽量睡个好觉。A. however无论怎样；B. no matter不要紧；C. although虽然；D. whatever无论什么。however相当于no matter how“无论怎样”，修饰后面的形容词或副词，引导让步状语从句，本句中修饰形容词much。故选A。
8.C【解析】考查连词辨析。句意：几个世纪以来，卢浮宫博物馆里的这些杰作一直与我们如此紧密地联系在一起，仿佛时间本身并不存在。A. even if即使，虽然；B. even though虽然，尽管；C. as though好像，仿佛； D. only if只要……就，只有。本句为方式状语从句，表示“仿佛”应用as though。故选C。
9.A【解析】考查让步状语从句。句意：即使你有时觉得你的朋友很刻薄，但珍惜你们的友谊是生活中很正常的一部分。A. Even though即使；B. Now that既然；C. As though似乎，好像；D. In case以防万一。从句提到“朋友有时候很刻薄”，主句提到“要珍惜友情”，从句表示“让步”概念，因此用even though引导让步状语从句。故选A项。
10.D【解析】考查时间状语从句。句意：我不明白为什么一些外国人必须出门，当在病毒爆发期间呆在家里是最安全的方式的时候。A. until直到；B. before在……之前；C. unless除非；D. when当……的时候。根据句意及常识可知，此处引导时间状语从句，意为“当在病毒爆发期间呆在家里是最安全的方式的时候”。故选D。
11.B【解析】考查让步状语从句。句意：无论是计划课程学习还是选择专业，你都应该掌控自己的生活。结合句意此处whether…or“无论……还是……”引导的让步状语从句。故选B。
12.D【解析】考查倒装和让步状语从句。句意：尽管听起来奇怪，但是他的想法被所有参加会议的人接受了。as引导让步状语从句时，要用倒装。规则为：将作表语的形容词或名词，作状语的副词提前或者将动词或分词提前。其余部分语序不变。在该题中，strange是表语，所以要提前，置于句首，故D选项正确。
13.B【解析】考查比较状语从句和句子结构。句意：这个研究项目的目的比起我们来说对于他们有着更不同的意义。根据句意不难还原出完整的句子应该是“The purpose of the research project has a more different meaning for them than the meaning that the purpose of the research project has for us”，其中主语The purpose of the research project已经出现要用it代替，而后句中同一主语同一谓语后的the meaning也需要省略。故选B项。
14.C【解析】考查同位语从句和条件状语从句。句意：上星期天他答应我，如果他有空，他就带我游览北京。分析句子可知，promise后接同位语从句，句意和句子结构完整，所以连接词为that， 根据句意，同位语从句为if引导的条件状语从句。故选C项。
15.D【解析】考查状语从句和主语从句引导词。句意：如果它们是有营养的不是一个足以让你吃更多的水果和蔬菜的因素的话，这里有一些可能会说服你的消息——也会让你看起来很好。分析整个句子可知，先是if引导的状语从句If that they are nutritious is not a factor temping enough to get you eating more fruit and vegetables，是主句here’s some news that may convince you的条件状语。而在if的条件从句中又有一个主语从句that they are nutritious，因为该主语从句中不缺少任何成分，且句意完整，所以用连接词that引导。因此，在整个句子中，两个引导词缺一不可。 故选D。
16.D【解析】考查状语从句。句意：十年后，他们喜结良缘。when“当……的时候”；that不引导状语从句；since“自从……以来”。It was+一段时间+before…是固定句型，表示“多长时间以后才……”，根据句意，故选D。
17.D【解析】考查状语从句。句意：到我到达那里的时候，火车已经离开车站。A. as soon as一……就；B. immediately一……就；C. the moment一……就；D. by the time到……的时候。根据句意，且主句是过去完成时可知，“火车离开车站”发生在“我到达那里”之前。故by the time“到……的时候”符合题意，故选D。
18.C【解析】考查状语从句的连接词。句意：根据规定，餐馆和酒店应停止提供一次性物品，除非顾客要求。since作为连词，表示“自从”，引导时间状语从句，表示“因为”，引导原因状语从句； once 用作连词，既可以表示“条件”（= if, as long as），也可以表示“时间”（=as soon as）； unless意为“除非，如果不”，常用来引导条件状语从句；until作为连词，意为“直到......”引导时间状语从句。分析句子可知，如果顾客不要求的话，根据规定，餐馆和酒店应停止提供一次性物品。状语从句表示条件，结合选项看，选项C符合题意。故选C项。
19.D【解析】考查地点状语从句。句意：不幸的是，在我们应该期待感激的地方，我们经常发现的是相反的东西。设空所在句子“____________we should expect gratitude”描述的是主句“we often find the opposite”发生的地点，所以是地点状语从句；地点状语从句的引导词为where。故选D项。
【点睛】
地点状语从句容易和定语从句混淆，要区别好两种从句一定要结合定义去理解。Where引导的定语从句前面有表示地点的先行词，而where引导的地点状语从句前面并没有表示地点的先行词。如A tall building was put up at the place where there used to be a desert.这个句子就是定语从句，因为有先行词place在从句中充当地点状语；A tall building was put up where there used to be a desert.这个句子则是地点状语从句，句子中不存在先行词。
20.C【解析】考查状语从句的从属连词。句意：汤姆非常独立，除非他想得到父母的支持，否则他从不征求父母的意见。A. since 自从……以来；B. once 一旦；C. unless 除非；D. after在……之后。此处表示“除非”需要父母的支持，所以是unless引导的条件状语从句。故选C。
21.C【解析】考查状语从句连接词。句意：生活中无论失去什么，都不要失去信念和希望，有了信念和希望，你就能过上幸福的生活，实现你的目标。A. Whenever无论何时；B. Wherever无论在哪里；C. Whatever无论什么；D. Whoever无论谁。此处为让步状语从句，表示“无论什么”应用whatever引导，相当于no matter what。故选C。
22.C【解析】考查让步状语从句。句意：不论你可能遇到多严重的问题，你都应该勇敢地面对挑战。分析句子可知，句意符合“先抑后扬”的特点，要用让步状语从句，可以用“no matter+疑问词”或“疑问词+ever”的结构表达“无论……都……”。既然problems有形容词serious来修饰，只能考虑“不论多么严重的问题”，用no matter how serious或however serious。故选C项。
23.C【解析】考查时间状语从句。句意：那位年轻女士一听到响声就冲进房间。A. right away 立刻，马上；B. at once 立刻；C. immediately 一…就…（连词）；D. at the moment此刻，当时。此处immediately是连词，意思是“一......就......”，相当于as soon as，引导时间状语从句。故选C。
24.A【解析】考查让步状语从句和倒装。句意：尽管努力试过了，但Mary还是没法把门打开。从句意中可以梳理出让步状语从句的逻辑关系，根据选项这里用as来引导，其含义相当于though，而as引导的让步状语从句必须以部分倒装的形式出现，被倒装的部分可以是表语、状语或动词原形，即正常语序应当是As(Though) she might try，部分倒装则将try提至句首。故选A项。
25.C【解析】考查条件状语从句。句意：——我能借你《史蒂夫·乔布斯》那本书看吗？——如果你能在周五之前还我就可以借给你。这里将答语的隐含意思补充完整应该是“如果你能在周五之前还，我就借给你”，属于条件状语从句，A选项if only意为“要是，只要”，一般用于表达难以实现的意愿和愿望，并不适合用在这里。B选项unless意为“除非”，可以引导条件状语从句，但逻辑上一般在后句中自带“不然就……”的含义，与句子要表达的意思也不相符。D选项now that意为“既然”，一般引导原因状语从句，不能用在这里。而C选项on condition that意为“在……条件下，如果”，可以引导条件状语从句。故选C项。
26.D【解析】考查连词。句意：现代科学发现，当人在用筷子时，有30个关节和50块肌肉共同作用，这对于大脑来说是个有利的刺激。A. since因为；B. although虽然；C. unless除非；D. while当……时候。根据题意可知，while引导时间状语从句。故选D项。
27.B【解析】考查连词词义辨析。句意：只要我们用适当的方法缓解压力，我们就可以让自己放松，并且远离它带来的不好影响。A. So that因此；B. As long as只要；C. Even if尽管，即使；D.As though好像。根据后句“we can relax ourselves and keep away from its bad effects.”可知，此处用as long as“只要”，引导条件状语从句。故选B项
28.B【解析】考查从属连词。句意：当我队赢得了冰球比赛时，我很自豪，这让我觉得我可以做任何事。分析句子可知，本句为时间状语从句，表示“当……时候”，用when。when从句的动词为延续性动词或者非延续性动词，while后的从句只接延续性动词，本句中的won为非延续性动词。故选B。
29.A【解析】考查状语从句。句意：——罗伯特先生，我想利用空档年自愿参加一场全球反艾滋病运动。——如果你有时间，那就太好了。A. provided that如果，倘若；B. in case 万一；C. even if即使；D. so that为了。此处是provided that引导的条件状语从句，故选A。
30.B【解析】试题分析：句意：我们应该保护我们的环境免受污染，这样我们的下一代就可以享受蔚蓝的天空，过健康的生活。A. as if似乎；B. so that以便，为的是；C. even if即使；D. in case以防万一。 故选B。
31.D【解析】考查从属连词while引导让步状语从句的用法。句意：尽管学生们来自不同的国家，但他们在这次夏令营中相处得很好。A. Because因为；B. Unless除非；C. Once一旦；D. While尽管、虽然。分析句意，前后部分所述事实构成转折关系（尽管/虽然……但是……），应使用while表达让步关系，故选D。
32.B【解析】考查连词。句意：作为总统，他任命一些人担任他认为最有能力的政府要职，尽管其中一些人公然违抗他的权威。as though意为“仿佛，好像”，even if和though意为“尽管，即使”，故排除A.D项。定语从句he considered most capable修饰的应该是men，用who或whom引导。关系代词在定语从句中充当宾语时，可省略。故B正确。
33.A【解析】考查状语从句。句意：尽管有雄心壮志是重要的，但是它必须被引导到正确的方向。否则，它会毁了我们自己和他人。A. though尽管；B. if如果；C. when当……时候；D. while在……期间。前后是让步关系，用though引导让步状语从句，相当于as（尽管），用部分倒装。故选A。
【点睛】
as （though也可以这样用）引导让步状语从句时，一般须用部分倒装。如：
Old as / though he is, he works like a young man. 尽管他很老了，但他工作起来却像个年轻人。
Hard as / though he was working, he didn’t pass the exam. 虽然他一直在努力学习，但他还是没有通过那次考试。
Try again as / though he will, he can’t succeed. 尽管他还会再试一试，但是它不会成功。
as / though引起的倒装分三种情况：表语、动词原形及状语的倒装。
1. 表语的倒装
一般直接将表语提前到句首，若表语是带不定冠词a / an的单数可数名词，倒装后，不定冠词a / an须被省略。如：
Fine as / though he looks, he is ill with some serious diseases.
Child as / though he is, he knows much about the society.
2. 原形动词的倒装
A. 动词前面带有情态动词may, might, will, would, can, could等时，只将行为动词提到句首，而这些情态动词保留在原处。
B. 若动词前面没有情态动词时，应在动词原来的位置加上助动词do的适当形式。
C. 用于这一句型的动词一般是不及物动词，而不能是系动词或及物动词。如：
Swim as / though he can, he can’t swim so far. 尽管他会游泳，但是他游不得那么远。
Run as / though he did, he didn’t run fast enough to catch the bus. 虽然他跑，但是他跑得不够快而没有赶上汽车。
3. 状语倒装
In the classroom as / though he stays, he doesn’t read his texts. 尽管他呆在教室里，但他不读书。
Carefully as / though he worked, he made some mistakes. 尽管他工作很细心，但还是除了一些差错。
34.C【解析】考查目的状语从句。句意：加泰罗尼亚领导人表示，他决定推迟宣布独立，以便与西班牙政府进行进一步谈判。in case万一；not until直到……才。此处是so that引导的目的状语从句，而in order to虽然也表示目的，但后面跟的是动词原形，故选C。
35.A【解析】考查时间状语从句。句意：当你羞于与别人分享你的喜怒哀乐时，不要抱怨被冷落了。A.when当……的时候；B.unless除非；C.once一旦；D.until直到。分析句子可知，划线部分缺了“当……时候”之意，故选A项。
36.A【解析】考查时间状语从句。句意：他对我很快地笑了一下，但当看到我的表情时，他马上就忍住了。A. when.当……时；B. unless.除非；C. if；D. until直到……为止。文中表示“当……时”，引导时间状语从句，故选A。
37.D【解析】考查连接词辨析。句意：——昨晚你什么时候睡觉的？——直到我爸爸回到家我才睡觉。A. while在……期间；B. after在……以后；C. when当……时候；D. until到……为止。分析句子可知，空白处意为“才……”；not…until意为“直到……才……”，是固定搭配，因此填until符合语境。故选D。
38.C【解析】考查连接词辨析。句意：即使我的童年生活早就离我远去，但我还是能依稀记得那段时光。A. if only但愿 ；B. as though好像；C. even though即使；D. in case以防万一。根据句意，此处为让步状语从句，表示“即使”应用even though引导。故选 C。
39.A【解析】考查地点状语从句。句意：房价因地而异，凡是有名牌学校的地方房价通常都很高。此处为地点状语从句，表示“……的地方”应用where引导。故选A。
40.C【解析】考查连接词用法辨析。句意：——我想在图书馆找一份工作。——好主意，只要不影响你的学习。A. now that由于；B. as soon as一……就……；C. as long as只要；D. even if虽然。根据上文Good idea可知对方支持在图书馆找工作，但是条件是“只要（as long as）”不影响学习，as long as引导条件状语从句。故选C。
41.B【解析】考查连接词辨析和非谓语动词。句意：Mary一听到这个消息就冲回家，结果却发现她丈夫已经不在了。第一空，A. as soon as一……就……；B. immediately一……就……；C. the moment一……就……；D. when当……时候，第一空引导时间状语从句，表示“一……就……”，故排除D选项；第二空中根据上文only to do sth.表示“不料竟会……”，后跟不定式做结果状语，故排除A、C选项。故选B。
42.B【解析】考查从属连词辨析。句意：在对新冠肺炎进行实验后，医学专家得出结论：这个病毒存活几率非常大，即使已感染者两次检测都呈阳性。A. as though好像；B. even if即使；C. in case如果；D. so that以至于、以便于。由句意可知，空前空后两句表让步，意为“即使”，表明病毒存活几率大，即使已经被感染过的人测试两次还会呈现阳性。故选B项。
43.B【解析】考查短动词语辨析和状语从句。句意：—要我把雨衣收起来吗？—不着急，把它放在原处。天看起来好像会下雨。put away意为“收起来，放好”，put on意为“增加；穿上”。根据“ No hurry. 以及It looks like rain.”可知，第一个空填put away。分析句子“Leave it ________ it is.”可知，此空引导地点状语从句，用where。故选B。
44.D【解析】考查让步状语从句。句意：尽管新系列产品的销售数字相对较小，但潜在市场很大。A. Unless除非；B. After在……之后；C. Since自从，既然；D. While虽然。根据句意可知，此处是让步状语从句，while用在句首，引导让步状语从句。故选D。
45.B【解析】考查状语从句。句意：在其他人觉得不可能的地方，中国人已经学会了寻找新的机遇。分析句子可知，句中缺少地点状语，用where表示“哪里或者……地方”。故选B项。
46.C考查状语从句。句意：正如水下的草，如果失去了根就会浮在水面上，一个国家失去了记忆也就迷失了。A. since因为；B. while当……时候；C. as正如，好像；D. when当……时候。本句为方式状语从句，表示“就像，正如”应用as。故选C。
47.C【解析】考查条件状语从句。句意：政府呼吁我们避免访问拥挤的地区和医疗机构，除非有必要。A. while然而，当……时候；B. because因为；C. unless除非；D. when当……时候。由语境可知，it is necessary表条件，所以用unless引导条件状语从句。故选C项。
48.B【解析】考查状语从句。句意：中国留学生被鼓励回国，只要他们诚实地填写医疗表格，严格遵守检疫规则。A. though尽管；B. as long as只要；C. unless除非；D. the moment一……就……。后文是条件状语，根据句意，故选B。
49.B【解析】考查倒装句。句意：直到我用最大的声音喊，他才转头来。否定词Not until放在句首后接时间状语从句，主句部分使用部分倒装，从句不倒装。故选B.
50.D【解析】考查状语从句。句意：信不信由你，即使你知道每个单词的意思,有些英语习语也很难理解。A. as if好像；B. in case万一；C. now that 既然；D. even if即使。此处是even if引导的让步状语从句。故选D。
51.B【解析】考查连词。句意：虽然我曾经犯过一些错误，但我不会花一点时间去后悔可能会发生的事情。A. Until直到……；B. While虽然，然而；C. Unless除非；D. Because因为。分析句子可知，前后句子是让步关系。故选B项。
52.C【解析】考查连接词辨析。句意：我将尽我最大的努力提前到达车站，即使我不得不一路走到那里。A. so that以便，所以；B. as though好像，仿佛；C. even if即使，虽然；D. in case万一，假使。根据句意可知，前后句意存在让步关系，此处为让步状语从句，表示“即使”应用even if。故选C。
53.B【解析】考查连词。句意：我第一次看见这幅画就喜欢上它了。分析句子可知，设空出前后是两个句子，故应用连词连接。the first time可充当连词用。故选B。
54.D【解析】考查原因状语从句。句意：——你给Fred回电话了吗？——我没必要，因为明天我要去见他。A. though虽然；B.unless除非；C.when当……时；D.because因为。分析句意可知，本句为原因状语从句。故选B项。
55.D【解析】考查连词词义辨析。句意：英雄本色虽各有千秋，但其昭世功力却是恒古不变的。A. in case以防；B. as if好像；C. so that以便，因此；D. even though尽管。根据句意“英雄本色虽各有千秋，但其昭世功力却是恒古不变的”可知，本句为even though引导的让步状语从句，故选D项。
56.C【解析】考查倒装句。句意：世界顶尖的人类棋手柯洁在与谷歌人工智能系统AlphaGo的对决中输掉了所有的三场比赛。as引导的状语从句要用倒装结构，“名词+as+主语+谓语”。although引导让步状语从句，不倒装。故选C。
57.B【解析】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。根据they’re conveying exactly the same meaning可知此处要用连词even though引导让步状语从句。故选B项。
58.B【解析】考查冠词和让步状语从句。句意：无论多可怕的经历，所有坏事必将结束。第一个空come to an end“结束”为固定短语，第二个空however加形容词，表示无论多么，这是一个让步状语从句，故选B。
59.B【解析】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。
60.A【解析】考查状语从句。句意：水不够的地方水稻长得不好。分析句子可知，空后是一个地点状语从句，意为“在那些水不够的地方”；分析句意可知，应用where来引导。结合选项，故选A。