新知03 although,until,so that及if引导的状语从句（精讲精练）-2026年八年级英语寒假衔接回归教材复习与预习重难点突破（新教材人教版）

新知 03 although,until,so that及if引导的状语从句（精讲精练） 概念：在复合句中作状语的从句叫作状语从句。状语从句一般修饰主句中的动词、形容词或副词等。 功能：九大状语从句分别表示（时间、条件、原因、地点、目的、结果、让步、比较） 等意义。 位置：位置灵活，可用于主句之前或之后。 1. until的用法 （1）作介词，表示＂直到……为止＂。 The meeting may last until Friday. 会议可能要延续到星期五。 Mark will be working until 5 o’clock. 马克将一直工作到五点钟。 【注意】由上面两个例句可知：until用于肯定句中表示动作一直持续到until短语所表示的时间为止，即表示动作的终点，意为＂直到……为止＂。在这种用法中，句子的谓语动词必须是延续性动词，如：live，wait，last，love，like，stay，work等。 （2）作连词，表示＂直到……为止；在……以前；不到……（不）＂。 ①用于肯定句中 Please wait here until I come. 请在这里等到我来。 ②用于否定句中 I won’t stop shouting until you let me go. 你不放开我，我就一直喊叫。 【注意】 until作连词用于否定句中，从句的动作先发生，主句的动作后发生，意为＂直到……才……＂。 比较until和till 此两个连词意义相同。肯定形式表示的意思是＂做某事直至某时＂，动词必须是延续性的。否定形式表达的意思是＂直至某时才做某事＂。动词为延续性或非延续性都可以。正确使用这两个连词的关键之一就在于判断句中的动词该用肯定式还是否定式。 肯定句：I slept until midnight. 我一直睡到半夜时醒了。 Wait till I call you. 等着我叫你。 （在肯定句中可用before代替。例如：Let’s get in the wheat before the sun sets.） 否定句：She didn’t arrive until 6 o’clock. 她直到6点才到。 Don’t get off the bus until it has stopped. 公共汽车停稳后再下车。 I didn’t manage to do it until you had explained how. 直到你教我后，我才会做。 区别： （1）until可用于句首，而till通常不用于句首。 Until you told me, I had heard nothing of what happened. 直到你告诉我以前，出了什么事我一点也不知道。 （2）until when 疑问句中，until要放在句首。 —Until when are you staying? —Until next Monday. 注意：否定句可用另外两种句式表示。 （3）Not until...在句首，主句用倒装。 Not until the early years of the 19th century did man know what heat is. 直到19 世纪初，人类才知道热为何物。 Not until I began to work did I realize how much time I had wasted. 直到工作，才认识到我已蹉跎了许多岁月。 （4）It is not until... that... It was not until I began to work that I realized how much time I had wasted. （5）表示＂一……就……＂的结构 hardly/scarcely... when/before, no sooner... than 和as soon as都可以表示＂一……就……＂的意思。 2. so that的用法 （1）so that引导目的状语从句，从句谓语动词常用情态动词may/might/can/could等。 We went early so that we could get good seats. 为了占到好座位，我们早早就去了。 （2）so that引导目的状语从句，当主句主语与从句主语一致时，可用＂so as to(in order to)＋动词原形＂转化为简单句。 He got up early so that he could catch the early bus. =He got up early in order to/so as to catch the early bus. 为了赶早班公交车他起床很早。 （3）so that还可以与in order that互换。 He worked day and night so that/in order that he could succeed. 他夜以继日地工作为的是成功。 【知识拓展】 so...that...表示＂如此……以至于……＂，引导结果状语从句。 The boy is so young that he can’t go to school. 这个男孩太小还不能去上学。 3. although的用法 （1）although较正式，引导的从句放在主句的前后均可。 Henry often helps me with my math although he is quite busy. 尽管亨利很忙，但是他经常帮助我学习数学。 （2）although不能与but连用，但可与yet，still连用。 虽然他老了，但是他工作努力。 Although he was old, but he worked hard.（×） Although he was old, he worked hard.（√） Although he was old, yet he worked hard.（√） 4.if的用法 e.g.: If you ask him for help, he will give you a hand. 如果你向他求助，他会给你提供帮助。 条件状语从句的时态 主句表示将来概念，从句需要使用一般现在时表示将来，即“主将从现”原则。 1. 主句为一般将来时，从句用一般现在时，如： e.g.: We will go climbing tomorrow if it doesn’t rain. 如果明天不下雨，我们就去爬山。 2. 主句谓语动词为can, may, must等情态动词时，从句用一般现在时，如： e.g.: You can make your dream come true as long as you don’t give up. 只要你不放弃，你就能实现梦想。 We must leave right now if we want to get to the airport on time. 如果我们想要准时达到机场，我们现在就必须动身。 3. 主句为祈使句，从句用一般现在时，如： e.g.: Don’t break your promises if you need others’ trust. 如果你想要别人的信任，就不要违背诺言。 区分条件状语从句连词if（如果）和宾语从句连词if（是否） if表示“如果”时，引导条件状语从句，从句需要遵循“主将从现”原则； if表示“是否”时，引导宾语从句，从句时态可使用将来时。 e.g.: I will call you if I have free time. 如果我有空余时间，我会给你打电话。 She is wondering if Mike will come to the party. 她在想，迈克能否来参加派对。 一、单项选择 1．The team worked on the project for many years ________ they made a breakthrough. A．if B．until C．because D．although 【答案】B 【详解】句意：这个团队在这个项目上工作了多年，直到他们取得了突破。 考查连词辨析。if如果；until直到；because因为；although尽管。根据“The team worked on the project for many years…they made a breakthrough”可知，团队持续工作多年，最终取得突破，表示动作持续到某个时间点为止，应用“until”连接。故选B。 2．Lisa keeps improving her work ________ the final result matches the design in her mind. A．if B．until C．when D．since 【答案】B 【详解】句意：Lisa不断改进她的工作，直到最终结果与她脑海中的设计相匹配。 考查连词辨析。if如果；until直到；when当……时；since自从。根据“keeps improving her work ... the final result matches the design in her mind.”可知，是指一直改进工作，直到与脑海中的设计相匹配，强调某个动作持续到另一个状态出现，用until引导时间状语从句。故选B。 3．—Why didn’t you go to bed early last night? —I had to wait ________ my brother came back. He was caught in the rain. A．while B．till C．because D．unless 【答案】B 【详解】句意：——你昨晚为什么不早点睡觉？——我必须等到我哥哥回来。他被雨淋湿了。 考查连词辨析。while当……的时候；till直到……才……；because因为；unless除非。根据“I had to wait”和“my brother came back”的语境可知，强调等待动作持续到“哥哥回来”这一时间点结束，需用表示“直到……才……”的时间连词。故选B。 4．Xiao Wei didn’t go to bed ________ he finished his homework. A．if B．until C．since 【答案】B 【详解】句意：小伟直到完成作业才上床睡觉。考查连词辨析。if如果；until直到……为止；since自从。“not...until...”是固定搭配，表示“直到……才……”，符合语境，即小伟完成作业这个动作发生之后才去睡觉，所以用until。故选B。 5．Time waits for no man. But some people won’t realize the value of time ________ it’s gone. A．since B．until C．whenever 【答案】B 【详解】句意：时间不等人，但是一些人直到时间流逝了才意识到时间的价值。考查连词辨析。since自从；until直到；whenever无论何时。根据“But some people won’t realize the value of time...it’s gone.”可知，not...until...表示“直到……才……”，此处指直到时间流逝才意识到时间的价值。故选B。 6．________ Li Ming keeps practicing playing the guitar, he will probably win the competition. A．Although B．Because C．If D．Unless 【答案】C 【详解】句意：如果李明坚持练习弹吉他，他可能会赢得比赛。考查连词辨析。Although虽然；Because因为；If如果；Unless除非。根据句意，前半句“Li Ming keeps practicing playing the guitar”是后半句“he will probably win the competition”的条件，应用if引导条件状语从句。故选C。 7．You won’t be successful ________ you don’t try your best to do something. A．or B．if C．unless D．although 【答案】B 【详解】句意：如果你不尽力做某事，你就不会成功。考查连词辨析。or或者；if如果；unless除非；although虽然。根据句意，句子表达条件关系，即“如果不尽力，就不会成功”。if 引导条件状语从句，表示“如果”，符合句意。故选B。 8．Please raise your hand ________ you agree with us. A．unless B．if C．although D．before 【答案】B 【详解】句意：如果你同意我们的观点，请举手。 考查连词辨析。unless除非；if如果；although尽管；before在……之前。分析句子结构可知，从句是主句动作发生的条件，即“举手”的前提是“同意”，应用if引导条件状语从句。故选B。 9．If we ________ a diary in English, our written English will improve a lot. A．keep B．kept C．will keep D．have kept 【答案】A 【详解】句意：如果我们坚持用英语写日记，我们的书面英语会提高很多。 考查动词时态。该句为if引导的条件状语从句，遵循“主将从现”原则，从句用一般现在时，主语是“we”，动词用原形。故选A。 10．My parents still booked the flight tickets for our winter holiday ________ the prices were high. A．if B．until C．because D．although 【答案】D 【详解】句意：尽管价格很高，我父母还是预订了我们寒假的机票。 考查连词辨析。if如果，引导条件状语从句；until直到……为止，引导时间状语从句；because因为，引导原因状语从句；although尽管，引导让步状语从句。根据“My parents still booked the flight tickets for our winter holiday...the prices were high.”可知，前后句之间存在让步关系，即尽管价格高，父母还是预订了机票，所以此处应该用although来引导让步状语从句。故选D。 11．______ the ancient building is more than 500 years old, it still looks beautiful and strong. A．Because B．Unless C．Though D．If 【答案】C 【详解】句意：虽然这座古建筑已有500多年的历史，但它看起来仍然美丽而坚固。 考查连词辨析。Because因为，引导原因状语从句；Unless除非，引导条件状语从句；Though虽然，引导让步状语从句；If如果，引导条件状语从句。根据“…the ancient building is more than 500 years old, it still looks beautiful and strong.”可知，虽然这座古建筑已有500多年的历史，但它看起来仍然美丽而坚固。前后句之间存在转折或让步关系。故选C。 12．—That young man must have something to do with the crime, right? —I suppose so, ________ he said that he didn’t do anything against the law. A．if B．when C．although D．because 【答案】C 【详解】句意：——那个年轻人一定和这个犯罪有关，对吗？——我想是的，尽管他说他没做任何违法的事。考查连词辨析。if如果；when当……时候；although尽管；because因为。根据语境可知，此处是在描述尽管年轻人声称自己没有违法，但说话者仍然认为他与犯罪有关，所以应该用although引导让步状语从句。故选C。 13．Our English teacher always speaks loudly ________ all the students can hear her clearly. A．even though B．as long as C．so that 【答案】C 【详解】句意：我们的英语老师总是大声说话，以便所有的学生都能清楚地听到她的话。 考查连词辨析。even though尽管；as long as只要；so that以便，为了。根据“Our English teacher always speaks loudly”和“all the students can hear her clearly.”可知，老师大声说话的目的是让学生能听清楚，此处应用so that引导目的状语从句。故选C。 14．Mr Jones prefers to stay at the hospital _______ he can care for his mother. A．before B．as soon as C．even if D．so that 【答案】D 【详解】句意：琼斯先生更喜欢待在医院里，这样他就能照顾他的母亲。 考查连词短语。before在……之前；as soon as一……就；even if即使；so that以便，为了。根据“he can care for his mother”可知，待在医院的目的是照顾母亲，so that引导目的状语从句，符合语境。故选D。 15．David saves money every month ________ he can replace his old car with a new one soon. A．so that B．since C．although D．when 【答案】A 【详解】句意：大卫每个月都存钱，以便他能尽快用新车替换旧车。 考查连词辨析。so that以便；since自从/既然；although尽管；when当……时。根据句意，存钱的目的是为了尽快换新车，表示目的应用so that。故选A。 二、语法选择 I was not a confident person before. That’s because I was fat and 16 often laughed at me. As a result, I became very shy. I was scared 17 hello to strangers. I was afraid to ask 18 questions and speak loud in public. I used to believe that I would be like this all my life. But one day, my friend Paul’s words changed my mind. He encouraged me to change 19 . He said, “If you can give it a try, you still probably make a change. But 20 you never try, your life is only going to get worse.” I 21 by what he said. Why not have a try? The first thing I did was to lose weight. I had a strict diet and did exercise every day. After six months, I lost ninety pounds. This taught me that I 22 change myself. A few months later, I 23 about a speech competition at my university. I made up my mind to join in the competition. For the first time, I was able to share my story and speak loud in front of lots of people. After the competition, I made 24 to-do list and started changing in a very short time. I tried my 25 to complete the things on the list one by one. When working on them, I became more and more confident. 16．A．other B．the other C．others 17．A．say B．to say C．saying 18．A．simple B．simply C．simpleness 19．A．myself B．me C．I 20．A．since B．if C．although 21．A．blow away B．blew away C．was blown away 22．A．must B．could C．need 23．A．hear B．heard C．have heard 24．A．a B．an C．the 25．A．good B．better C．best 【答案】 16．C 17．B 18．A 19．A 20．B 21．C 22．B 23．B 24．A 25．C 【导语】本文讲述了作者从一个害羞、不自信的人，通过朋友的鼓励，努力减肥并参加演讲比赛，逐渐变得自信并不断进步的故事。 16．句意：那是因为我胖并且其他人经常嘲笑我。 other其他的；the other两者中的一个；others其他的人或物。根据分析句子成分及“often laughed at me.”可知，空处缺主语，指“其他人”，需others作主语。故选C。 17．句意：我害怕向陌生人问好。 say说，动词原形；to say说，动词不定式；saying说，现在分词或动名词。be scared to do sth是固定搭配，表示“害怕做某事”，故选B。 18．句意：我不敢问简单的问题。 simple简单的，形容词；simply简单地，副词；simpleness简单，名词。空处需形容词修饰名词questions，作定语。故选A。 19．句意：他鼓励我改变自己。 myself我自己，反身代词；me我，宾格；I我，主格。根据“He encouraged me to change...”可知，空处指“改变自己”，需反身代词myself。故选A。 20．句意：但如果你从不尝试，生活只会更糟。 since自从；if如果，是否；although虽然。分析句子结构可知，空处表条件，需if引导条件状语从句。故选B。 21．句意：我被他的话深深打动。 blow away打动，震撼，动词原形；blew away打动，震撼，动词过去式；was blown away被打动，被震撼，用于一般过去时的被动语态。主语I与选项核心词之间为被动关系，因是回忆过去的事，需一般过去时的被动语态，其结构为was/were done，主语为I，be动词用was。故选C。 22．句意：这教会我能够改变自己。 must必须；could能；need需要。根据“I had a strict diet and did exercise every day. After six months, I lost ninety pounds”可知，减肥成功证明能够改变自己。故选B。 23．句意：几个月后，我听说了我们大学的演讲比赛。 hear听到，动词原形；heard听到，动词过去式；have heard听到，现在完成时。根据“A few months later.”可知，空处时态为一般过去时，谓语动词用过去式。故选B。 24．句意：比赛之后，我制定了一份待办清单并开始在非常短的时间里改变。 a一个，用于辅音音素前；an一个，用于元音音素前；the这个，表特指。根据“to-do list”，空处表泛指，需不定冠词，to是以辅音音素开头，需冠词a修饰。故选A。 25．句意：我尽最大努力一个一个地完成清单上的事情。 good好的，形容词原级；better更好，比较级；best最好，最高级。固定短语try one’s best“尽某人最大努力”。故选C。 三、短文填空 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 How can I become a better person? This question has been in my head for long. As students, we spend most of 26 (we) time studying. I know that learning at school 27 (make) us better persons, but I always dream of doing more. Last year, I got to know 28 group of autistic (患自闭症的) children. We called them “the Snails”. It was hard to communicate with them at first, because they wouldn’t like to. After a two-week training course, I became more skilled and got 29 (close) to them day by day. I also received much 30 (please) when playing with them. What’s more, I found that every one of “the Snails” had his or her own talent. And their colorful pictures on the wall caught my special attention, 31 it was difficult to tell what they were trying to express. 32 (deep) moved by their pictures, I decided to hold a charity (慈善) sale. We walked on the busy street, selling their creative pictures. 60 pictures 33 (sell) that day. People thought their pictures were full 34 imagination. Back to the question about how 35 (become) a better person, I think I’m lucky enough to get my own answer. 【答案】 26．our 27．makes 28．a 29．closer 30．pleasure 31．although/though 32．Deeply 33．were sold 34．of 35．to become 【导语】本文作者围绕“如何成为一个更好的人”这一问题展开叙述，讲述了自己接触一群自闭症儿童的经历，从起初交流困难，到经过培训与他们日益亲近并发现他们的天赋。作者被他们的画作打动，举办慈善义卖，画作很受欢迎。最后作者表示通过这段经历找到了“如何成为更好的人”这个问题的答案。 26．句意：作为学生，我们大部分时间都花在学习上。根据“spend most of...time studying”可知，这里需要一个形容词性物主代词修饰名词“time”，表示“我们的”时间，故填our。 27．句意：我知道在学校学习让我们成为更好的人，但我总是梦想做更多。“learning at school”是动名词短语作主语，谓语动词要用单数形式，陈述客观事实用一般现在时，故填makes。 28．句意：去年，我结识了一群自闭症儿童。根据“Last year, I got to know...group of autistic (患自闭症的) children.”可知，“a group of”是固定短语，表示“一群”，故填a。 29．句意：经过为期两周的培训课程，我变得更熟练了，并且与他们一天比一天更亲近。根据“day by day”以及语境可知，这里表示与之前相比更亲近，要用比较级，故填closer。 30．句意：和他们一起玩耍时，我也得到了很多乐趣。“much”后接不可数名词，“please”的名词形式是“pleasure”，表示“乐趣”，故填pleasure。 31．句意：他们墙上色彩斑斓的画作引起了我的特别注意，尽管很难说清他们想要表达什么。根据“And their colorful pictures on the wall caught my special attention,...it was difficult to tell what they were trying to express.”可知，前后句之间是让步关系，即“虽然很难说清他们想表达什么，但他们的画引起了我的特别注意”，故填although/though。 32．句意：被他们的画作深深打动，我决定举办一场慈善义卖。“moved”是动词的过去分词形式，这里需要一个副词修饰，“deep”的副词形式“deeply”表示“深深地”，强调程度，故填Deeply。 33．句意：那天60幅画被卖掉了。分析句子可知，“pictures”和“sell”之间是被动关系，且时间状语“that day”表明时态是一般过去时，一般过去时的被动语态结构是“was/were+过去分词”，主语“pictures”是复数，故填were sold。 34．句意：人们认为他们的画充满想象力。根据“People thought their pictures were full...imagination.”可知，“be full of”是固定短语，表示“充满”，故填of。 35．句意：回到关于如何成为一个更好的人的问题上，我想我很幸运能得到自己的答案。“how to do sth.”表示“如何做某事”，是固定结构，故填to become 。 一、单项选择 1．（2023·四川广元·中考真题）—Have you heard of Tom Sawyer? —Sure. But I didn’t read it ________ last year. A．while B．when C．after D．until 【答案】D 【详解】句意：——你听说过《汤姆·索亚历险记》吗？——当然。但我直到去年才读它。 考查连词辨析。while当；when当；after在……之后；until直到。根据“didn’t read it...last year”可知是直到去年才读它，not...until“直到……才”。故选D。 2．（2024·甘肃临夏·中考真题）Tom didn’t go to bed ________ his mother came back last night. A．until B．if C．because D．unless 【答案】A 【详解】句意：汤姆直到他妈妈昨晚回来才上床睡觉。 考查连词辨析。until直到；if如果；because因为；unless除非。分析句子可知，此处指汤姆直到妈妈回来才上床睡觉。not…until…“直到……才……”。故选A。 3．（2024·四川泸州·中考真题）You will never truly understand your parents’ great love ______ you grow up. A．until B．if C．since D．as 【答案】A 【详解】句意：直到你长大，你才会真正理解父母之爱有多伟大。 考查连词辨析。until直到；if如果；since既然；as随着。根据“You will never truly understand your parents’ great love…you grow up”可知，直到长大才会理解父母的爱，故选A。 4．（2023·甘肃武威·中考真题）Let’s wait ________ the rain stops. A．so B．while C．since D．until 【答案】D 【详解】句意：让我们等雨停。考查连词辨析。so因此；while然而；since自从；until直到……。根据“Let’s wait … the rain stops.”可知，此处指等着直到雨停，用until引导时间状语从句。故选D。 5．（2025·四川凉山·中考真题）—Labor education is important for students’ development. —Sure. ________ schools put it into practice, students will be more independent. A．Although B．Unless C．If 【答案】C 【详解】句意：——劳动教育对学生的发展很重要。——当然。如果学校把它付诸实践，学生将更加独立。 考查if引导的条件状语从句。Although尽管；Unless除非；If如果。根据“...schools put it into practice, students will be more independent.”可知，如果学校把它付诸实践，学生将更加独立，用if引导条件状语从句。故选C。 6．（2025·四川乐山·中考真题）It is good for your health ________ you take a walk after supper. A．until B．if C．although 【答案】B 【详解】句意：如果你晚饭后散步，它对你的健康有好处。考查连词辨析。until直到；if如果；although虽然。分析句子可知，后句是前句的肯定条件，用if引导条件状语从句。故选B。 7．（2024·江苏南京·中考真题）Technology can be of great help ________ we make an effort to control it and use it right. A．if B．before C．though D．until 【答案】A 【详解】句意：如果我们努力控制它并正确使用它，技术可以提供很大的帮助。 考查连词辨析。if如果；before在……之前；though虽然；until直到。分析句子可知，后句是前句的条件，用if引导条件状语从句。故选A。 8．（2024·海南·中考真题）—Betty, you will miss the school bus ________ you don’t get up early tomorrow morning. —I won’t, Dad. A．so that B．if C．though 【答案】B 【详解】句意：——贝蒂，如果你明天早上不早点起床，你将错过校车。——不会的，爸爸。 考查条件状语从句。so that因此，通常引导目的状语从句；if如果，通常引导条件状语从句；though虽然，通常引导让步状语从句。根据句子时态和逻辑关系可知，事情并未发生，“you don’t get up early tomorrow morning”为“you will miss the school bus”假设条件。故选B。 9．（2024·黑龙江哈尔滨·中考真题）— Lily, ________ you are free after school, let’s go to the shop and buy a gift for Father. —OK, Lucy. Tomorrow is Father’s birthday. I almost forgot it. A．until B．if C．unless 【答案】B 【详解】句意：——莉莉，如果你放学后有空，我们去商店给爸爸买份礼物吧。——好的，露西。明天是爸爸的生日，我差点忘了。考查连词辨析。until直到；if如果；unless除非。根据“you are free after school, let’s go to the shop and buy a gift for Father.”可知，前句是后句的肯定条件，如果莉莉有时间，她们才能一起去买礼物，应用if引导条件状语从句。故选B。 10．（2024·江苏徐州·中考真题）If you are lazy in spring, you ________ nothing in autumn. A．harvested B．will harvest C．are harvesting D．have harvested 【答案】B 【详解】句意：如果你在春天懒惰，秋天你将一无所获。考查动词时态。If引导的条件状语从句，遵循“主将从现”的原则，主句需用一般将来时，其谓语动词结构为“will do”。故选B。 11．（2023·海南·中考真题）Helen Keller was blind. ________ she lived in the dark, she always believed a dream would light up her life. A．If B．Unless C．Although 【答案】C 【详解】句意：海伦·凯勒是盲人。虽然她生活在黑暗中，但她始终相信梦想会照亮她的生活。 考查连词辨析。if如果；unless除非；although虽然。根据“she lived in the dark, she always believed a dream would light up her life.”可知前后两句是让步关系，用although引导让步状语从句。故选C。 12．（2025·海南·中考真题）After the speech, it was time for photos. ________ some of our eyes were wet, we still tried to show bright smiles. A．But B．So C．Although 【答案】C 【详解】句意：演讲结束后，是拍照的时间。尽管我们中有些人的眼睛湿了，我们仍然努力展现出明亮的笑容。考查连词辨析。But但是；So所以；Although尽管。此处从句“some of our eyes were wet”与主句“we still tried to show bright smiles”构成让步关系，需用Although引导让步状语从句，故选C。 13．（2025·江苏无锡·中考真题）________ it may not work on everyone, it may work on you. A．Though B．But C．Because D．Since 【答案】A 【详解】句意：虽然它可能不会对每个人都有效，但它可能对你有效。 考查连词辨析。Though尽管，虽然；But但是；Because因为；Since自从。根据“... it may not work on everyone, it may work on you.”可知，此处表示让步关系，表示尽管它可能不会对每个人有效，但可能对你有效，用though引导让步状语从句。故选A。 14．（2023·上海·中考真题）The team completed the task ________ they had met with many difficulties. A．until B．though C．unless D．because 【答案】B 【详解】句意：尽管他们遇到了许多困难，这个团队还是完成了任务。 考查连词辨析。until直到……为止；though尽管；unless除非；because因为。根据“the team completed the task”和“they had met with many difficulties”可知应是though引导的让步状语从句，表示“尽管”。故选B。 15．（2024·四川攀枝花·中考真题）We should keep our hearts open ________ we can find more and more chances to get to know more people and their cultures. A．so that B．as soon as C．as long as D．even though 【答案】A 【详解】句意：我们应保持开放的心态，以便能找到更多机会去了解更多的人和他们的文化。 考查连词辨析。so that以便，为了；as soon as一……就……；as long as只要；even though尽管。根据“we can find more and more chances to get to know more people and their cultures.”可知，这句话是保持开放心态的目的，应用so that引导目的状语从句。故选A。 16．（2025·黑龙江绥化·中考真题）Nowadays more and more people take exercise every day ________ they can have healthier bodies. A．such that B．in order to C．so that 【答案】C 【详解】句意：如今，越来越多的人每天锻炼身体，这样他们才能拥有更健康的身体。 考查so that引导的目的状语从句。such that到这样的程度； in order to do sth.为了做某事；so that以便于，后接从句。“每天锻炼”的目的是“拥有更健康的身体”，空后是句子，用so that引导目的状语从句。故选C。 17．（2025·四川成都·中考真题）Xu Dawei wants to pass the Civilian Mobile Library on to his son ________ it can stay open forever. A．before B．although C．so that 【答案】C 【详解】句意：徐大伟想把民间流动图书馆传给儿子，让它永远开放。 考查连词辨析。before在……之前；although虽然；so that以便于。分析句子可知，“把民间流动图书馆传给儿子”的目的是“让它永远开放”，用so that引导目的状语从句。故选C。 18．（2023·内蒙古·中考真题）Our teacher asks us to read newspapers every day ________ we can find out what’s going on around the world. A．so that B．even though C．in order to D．as soon as 【答案】A 【详解】句意：我们的老师让我们每天读报，这样我们就可以了解世界各地发生了什么。 考查连词辨析。so that以便于；even though即使；in order to为了；as soon as一……就。“Our teacher asks us to read newspapers every day”的目的是“we can find out what’s going on around the world.”，且空后是从句，用so that引导目的状语从句。故选A。 19．（2023·江苏徐州·中考真题）Let’s take the simple steps today ________ we will save the world for our grandsons and granddaughters tomorrow. A．unless B．until C．so that D．though 【答案】C 【详解】句意：我们从今天开始采取一些措施吧，这样我们将会为我们的后代子孙拯救世界。 考查连词辨析。unless除非；until直到；so that以便；though尽管。分析句子可知，我们现在采取行动的目的是为了我们的后代，故用so that引导目的状语从句。故选C。 20．（2022·四川成都·中考真题）Mary has learned a lot about the history of Sichuan _______ she can be a tour guide. A．even if B．as soon as C．so that 【答案】C 【详解】句意：玛丽了解了很多关于四川的历史，这样她就能当导游了。 考查连词。even if即使；as soon as一……就；so that以便，为了；了解四川历史的目的是为了当导游，故此处用so that引导目的状语从句，故选C。 二、选词填空 （2024·甘肃兰州·中考真题）阅读下面的短文，用方框中所给词的适当形式填空，使文意通顺，结构正确。（每个单词限用一次） ear    changeable    work    snow    something    also    while    dry    they    until Have you ever been to Dali? Dali is quite a beautiful place in Yunnan. The wind, the flowers, the 21 and the moon are not only landscapes and styles of Dali, but 22 its real sceneries and countless stories. There are nineteen peaks (山峰) in the Cangshan Mountain, all of 23 are snow-capped. This mountain, which extends across Dali, runs from north to south, 24 it reaches this small town with spring in the air. It is a companion to the Erhai Lake for thousands of years. The clouds of the Cangshan Mountain are 25 . When the clouds appear, fishing boats aren’t allowed to 26 in the lake. No matter what good weather it is now, it will soon be windy and the tides (潮汐) will be so high. It seems that the strong wind would only stop when the water in the lake became 27 . The Erhai Lake and the Cangshan Mountain make each other better. The shape of the lake looks like a(n) 28 . Many people come here every year. They won’t do 29 except sitting in the courtyard of a folk inn, enjoying the breeze (微风) from the lake and the nice sceneries. 30 riding a bike between the Erhai Lake and the Cangshan Mountain, you are really in a wonderland. 【答案】 21．snow 22．also 23．them 24．until 25．changeable 26．work 27．dry 28．ear 29．anything 30．While 【导语】本文描绘了大理的自然美景，主要介绍了苍山的雪景、洱海的风月以及两者之间的迷人风光。 21．句意：风、花、雪、月，不仅是大理的风景和风格，更是大理的真实风景和无数故事。根据“The wind, the flowers, the…and the moon”及备选词汇可知，此处介绍大理的景物，缺少名词作主语，故snow“雪”符合语境。故填snow。 22．句意：风、花、雪、月，不仅是大理的风景和风格，更是大理的真实风景和无数故事。根据“…are not only landscapes and styles of Dali, but…”及备选词汇可知，此处是短语not only…but also…“不但……而且……”。故填also。 23．句意：苍山有十九座山峰，都是白雪皑皑的。根据“There are nineteen peaks (山峰) in the Cangshan Mountain, all of…”及备选词汇可知，此处缺少主语，指前文提到的十九座山峰被雪覆盖。they“它们”，代词主格，用其宾格them作介词of的宾语，指代前文的nineteen peaks。故填them。 24．句意：这座山横跨大理，从北向南延伸，一直延伸到这个充满春天气息的小镇。根据“which extends across Dali, runs from north to south,…it reaches this small town with spring in the air”及备选词汇可知，此处指苍山从北到南延伸，一直到这个小镇。until“直到”符合语境。故填until。 25．句意：苍山的云是多变的。根据“The clouds of the Cangshan Mountain are…”及备选词汇可知，此处缺少表语，指苍山的云是多变的。changeable“易变的”符合语境。故填changeable。 26．句意：当云层出现时，渔船不允许在湖中作业。根据“fishing boats aren’t allowed to… in the lake”及备选词汇可知，be not allowed to do sth.“不被允许做某事”，此处缺少动词，指渔船不被允许在湖中工作。work“工作”符合语境。故填work。 27．句意：似乎只有湖中的水干涸了，强风才会停止。根据“It seems that the strong wind would only stop when the water in the lake became…”及备选词汇可知，此处指似乎只有湖中的水干涸了，强风才会停止。dry“干涸的”符合语境，形容词作表语。故填dry。 28．句意：湖的形状看起来像一只耳朵。根据“The shape of the lake looks like a(n)…”及备选词汇可知，此处缺少名词作宾语，指洱海的形状看起来像一只耳朵。ear“耳朵”符合语境，被a(n)修饰，用其单数形式。故填ear。 29．句意：他们什么也不做，只是坐在民宿的院子里，享受着湖中吹来的微风和美丽的风景。根据“They won’t do…except sitting in the courtyard of a folk inn”及备选词汇可知，此处缺少名词作do的宾语，指“他们什么也不做，只是……”。something“某些事情”，此处是否定句，故用anything“任何事情”。故填anything。 30．句意：骑自行车穿梭于洱海和苍山之间，真是置身仙境。根据“…riding a bike between the Erhai Lake and the Cangshan Mountain, you are really in a wonderland.”及备选词汇可知，此处缺少连词，指当骑行于洱海苍山之间，仿佛置身仙境。while“当……时”符合语境，首字母大写。故填While。 （2024·甘肃临夏·中考真题）用方框中所给单词或短语的适当形式填空，使短文通顺、正确、连贯，每个单词或短语限用一次。 quick,  they,  in,  ear,  so that,  cold,  help,  pick up,  example,  why When it comes to rabbits, we always think of their long ears. But do you know 31 they have such long ears? With their long ears, rabbits can 32 sounds from up to three kilometers away. Most rabbits can move their ears in two different directions. Each ear can turn up to 270 degrees. This 33 them to hear the sounds from all directions. For 34 , when they hear the sounds of a wolf coming, the rabbits can 35 run away. Another reason why rabbits have long ears is for controlling 36 body temperature. Rabbits have many blood vessels (血管) in their long 37 . When a rabbit feels hot, the blood vessels will become greater 38 size. This allows more blood to move to its ears. As air blows over, it makes the blood cool down. Then the cool blood moves to other parts of the body 39 it feels comfortable. However, less blood moves to the rabbit’s ears on 40 days. This helps to keep the heat. 【答案】 31．why 32．pick up 33．helps 34．example 35．quickly 36．their 37．ears 38．in 39．so that 40．cold 【导语】本文向我们科普关于兔子为什么有长耳朵的常识。 31．句意：但是你知道它们为什么有这么长的耳朵吗？根据“But do you know...they have such long ears?”和后文可知，介绍兔子为什么有长耳朵，why“为什么”符合语境，故填why。 32．句意：兔子有长长的耳朵，能接收到三公里外的声音。根据“rabbits can...sounds from up to three kilometers away”可知，兔子的长耳朵能接收到三公里外的声音，pick up“接收”，情态动词后用动词原形，故填pick up。 33．句意：这有助于它们听到来自四面八方的声音。根据“This...them to hear the sounds from all directions.”可知，这有助于它们听到来自四面八方的声音，help“帮助”，时态是一般现在时，主语是This，动词用三单。故填helps。 34．句意：例如，当它们听到狼来的声音时，兔子可以迅速逃跑。根据“For..., when they hear the sounds of a wolf coming...”可知，此处是for example“例如”，固定短语，故填example。 35．句意：例如，当它们听到狼来的声音时，兔子可以迅速逃跑。根据“when they hear the sounds of a wolf coming, the rabbits can...run away”可知，当它们听到狼来的声音时，兔子可以迅速逃跑，quick“迅速的”，此处在句中修饰动词，用副词形式，故填quickly。 36．句意：兔子长耳朵的另一个原因是为了控制它们的体温。根据“Another reason why rabbits have long ears is for controlling...body temperature.”可知，耳朵可以帮助控制它们的体温，they“它们”，此处应用形容词性物主代词作定语，故填their。 37．句意：兔子的长耳朵里有许多血管。根据“Rabbits have many blood vessels (血管) in their long...”可知，兔子的长耳朵里有许多血管，ear“耳朵”，此处表示复数含义，使用名词复数形式。故填ears。 38．句意：当兔子感到热时，血管会变大。根据“When a rabbit feels hot, the blood vessels will become greater...size.”可知，当兔子感到热时，血管会变大，in size“在尺寸上”符合语境，故填in。 39．句意：然后，凉爽的血液会流向身体的其他部位，让人感觉舒服。“it feels comfortable”是“the cool blood moves to other parts of the body”的目的，用so that“为了”引导目的状语从句，故填so that。 40．句意：然而，在寒冷的日子里，流向兔子耳朵的血液较少。根据“less blood moves to the rabbit’s ears on...days. This helps to keep the heat.”可知，有助于保持热量，所以是寒冷的天，cold“寒冷的”，作定语修饰days。故填cold。 ( 1 / 13 ) 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $ 新知 03 although,until,so that及if引导的状语从句（精讲精练） 概念：在复合句中作状语的从句叫作状语从句。状语从句一般修饰主句中的动词、形容词或副词等。 功能：九大状语从句分别表示（时间、条件、原因、地点、目的、结果、让步、比较） 等意义。 位置：位置灵活，可用于主句之前或之后。 1. until的用法 （1）作介词，表示＂直到……为止＂。 The meeting may last until Friday. 会议可能要延续到星期五。 Mark will be working until 5 o’clock. 马克将一直工作到五点钟。 【注意】由上面两个例句可知：until用于肯定句中表示动作一直持续到until短语所表示的时间为止，即表示动作的终点，意为＂直到……为止＂。在这种用法中，句子的谓语动词必须是延续性动词，如：live，wait，last，love，like，stay，work等。 （2）作连词，表示＂直到……为止；在……以前；不到……（不）＂。 ①用于肯定句中 Please wait here until I come. 请在这里等到我来。 ②用于否定句中 I won’t stop shouting until you let me go. 你不放开我，我就一直喊叫。 【注意】 until作连词用于否定句中，从句的动作先发生，主句的动作后发生，意为＂直到……才……＂。 比较until和till 此两个连词意义相同。肯定形式表示的意思是＂做某事直至某时＂，动词必须是延续性的。否定形式表达的意思是＂直至某时才做某事＂。动词为延续性或非延续性都可以。正确使用这两个连词的关键之一就在于判断句中的动词该用肯定式还是否定式。 肯定句：I slept until midnight. 我一直睡到半夜时醒了。 Wait till I call you. 等着我叫你。 （在肯定句中可用before代替。例如：Let’s get in the wheat before the sun sets.） 否定句：She didn’t arrive until 6 o’clock. 她直到6点才到。 Don’t get off the bus until it has stopped. 公共汽车停稳后再下车。 I didn’t manage to do it until you had explained how. 直到你教我后，我才会做。 区别： （1）until可用于句首，而till通常不用于句首。 Until you told me, I had heard nothing of what happened. 直到你告诉我以前，出了什么事我一点也不知道。 （2）until when 疑问句中，until要放在句首。 —Until when are you staying? —Until next Monday. 注意：否定句可用另外两种句式表示。 （3）Not until...在句首，主句用倒装。 Not until the early years of the 19th century did man know what heat is. 直到19 世纪初，人类才知道热为何物。 Not until I began to work did I realize how much time I had wasted. 直到工作，才认识到我已蹉跎了许多岁月。 （4）It is not until... that... It was not until I began to work that I realized how much time I had wasted. （5）表示＂一……就……＂的结构 hardly/scarcely... when/before, no sooner... than 和as soon as都可以表示＂一……就……＂的意思。 2. so that的用法 （1）so that引导目的状语从句，从句谓语动词常用情态动词may/might/can/could等。 We went early so that we could get good seats. 为了占到好座位，我们早早就去了。 （2）so that引导目的状语从句，当主句主语与从句主语一致时，可用＂so as to(in order to)＋动词原形＂转化为简单句。 He got up early so that he could catch the early bus. =He got up early in order to/so as to catch the early bus. 为了赶早班公交车他起床很早。 （3）so that还可以与in order that互换。 He worked day and night so that/in order that he could succeed. 他夜以继日地工作为的是成功。 【知识拓展】 so...that...表示＂如此……以至于……＂，引导结果状语从句。 The boy is so young that he can’t go to school. 这个男孩太小还不能去上学。 3. although的用法 （1）although较正式，引导的从句放在主句的前后均可。 Henry often helps me with my math although he is quite busy. 尽管亨利很忙，但是他经常帮助我学习数学。 （2）although不能与but连用，但可与yet，still连用。 虽然他老了，但是他工作努力。 Although he was old, but he worked hard.（×） Although he was old, he worked hard.（√） Although he was old, yet he worked hard.（√） 4.if的用法 e.g.: If you ask him for help, he will give you a hand. 如果你向他求助，他会给你提供帮助。 条件状语从句的时态 主句表示将来概念，从句需要使用一般现在时表示将来，即“主将从现”原则。 1. 主句为一般将来时，从句用一般现在时，如： e.g.: We will go climbing tomorrow if it doesn’t rain. 如果明天不下雨，我们就去爬山。 2. 主句谓语动词为can, may, must等情态动词时，从句用一般现在时，如： e.g.: You can make your dream come true as long as you don’t give up. 只要你不放弃，你就能实现梦想。 We must leave right now if we want to get to the airport on time. 如果我们想要准时达到机场，我们现在就必须动身。 3. 主句为祈使句，从句用一般现在时，如： e.g.: Don’t break your promises if you need others’ trust. 如果你想要别人的信任，就不要违背诺言。 区分条件状语从句连词if（如果）和宾语从句连词if（是否） if表示“如果”时，引导条件状语从句，从句需要遵循“主将从现”原则； if表示“是否”时，引导宾语从句，从句时态可使用将来时。 e.g.: I will call you if I have free time. 如果我有空余时间，我会给你打电话。 She is wondering if Mike will come to the party. 她在想，迈克能否来参加派对。 一、单项选择 1．The team worked on the project for many years ________ they made a breakthrough. A．if B．until C．because D．although 2．Lisa keeps improving her work ________ the final result matches the design in her mind. A．if B．until C．when D．since 3．—Why didn’t you go to bed early last night? —I had to wait ________ my brother came back. He was caught in the rain. A．while B．till C．because D．unless 4．Xiao Wei didn’t go to bed ________ he finished his homework. A．if B．until C．since 5．Time waits for no man. But some people won’t realize the value of time ________ it’s gone. A．since B．until C．whenever 6．________ Li Ming keeps practicing playing the guitar, he will probably win the competition. A．Although B．Because C．If D．Unless 7．You won’t be successful ________ you don’t try your best to do something. A．or B．if C．unless D．although 8．Please raise your hand ________ you agree with us. A．unless B．if C．although D．before 9．If we ________ a diary in English, our written English will improve a lot. A．keep B．kept C．will keep D．have kept 10．My parents still booked the flight tickets for our winter holiday ________ the prices were high. A．if B．until C．because D．although 11．______ the ancient building is more than 500 years old, it still looks beautiful and strong. A．Because B．Unless C．Though D．If 12．—That young man must have something to do with the crime, right? —I suppose so, ________ he said that he didn’t do anything against the law. A．if B．when C．although D．because 13．Our English teacher always speaks loudly ________ all the students can hear her clearly. A．even though B．as long as C．so that 14．Mr Jones prefers to stay at the hospital _______ he can care for his mother. A．before B．as soon as C．even if D．so that 15．David saves money every month ________ he can replace his old car with a new one soon. A．so that B．since C．although D．when 二、语法选择 I was not a confident person before. That’s because I was fat and 16 often laughed at me. As a result, I became very shy. I was scared 17 hello to strangers. I was afraid to ask 18 questions and speak loud in public. I used to believe that I would be like this all my life. But one day, my friend Paul’s words changed my mind. He encouraged me to change 19 . He said, “If you can give it a try, you still probably make a change. But 20 you never try, your life is only going to get worse.” I 21 by what he said. Why not have a try? The first thing I did was to lose weight. I had a strict diet and did exercise every day. After six months, I lost ninety pounds. This taught me that I 22 change myself. A few months later, I 23 about a speech competition at my university. I made up my mind to join in the competition. For the first time, I was able to share my story and speak loud in front of lots of people. After the competition, I made 24 to-do list and started changing in a very short time. I tried my 25 to complete the things on the list one by one. When working on them, I became more and more confident. 16．A．other B．the other C．others 17．A．say B．to say C．saying 18．A．simple B．simply C．simpleness 19．A．myself B．me C．I 20．A．since B．if C．although 21．A．blow away B．blew away C．was blown away 22．A．must B．could C．need 23．A．hear B．heard C．have heard 24．A．a B．an C．the 25．A．good B．better C．best 三、短文填空 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 How can I become a better person? This question has been in my head for long. As students, we spend most of 26 (we) time studying. I know that learning at school 27 (make) us better persons, but I always dream of doing more. Last year, I got to know 28 group of autistic (患自闭症的) children. We called them “the Snails”. It was hard to communicate with them at first, because they wouldn’t like to. After a two-week training course, I became more skilled and got 29 (close) to them day by day. I also received much 30 (please) when playing with them. What’s more, I found that every one of “the Snails” had his or her own talent. And their colorful pictures on the wall caught my special attention, 31 it was difficult to tell what they were trying to express. 32 (deep) moved by their pictures, I decided to hold a charity (慈善) sale. We walked on the busy street, selling their creative pictures. 60 pictures 33 (sell) that day. People thought their pictures were full 34 imagination. Back to the question about how 35 (become) a better person, I think I’m lucky enough to get my own answer. 一、单项选择 1．（2023·四川广元·中考真题）—Have you heard of Tom Sawyer? —Sure. But I didn’t read it ________ last year. A．while B．when C．after D．until 2．（2024·甘肃临夏·中考真题）Tom didn’t go to bed ________ his mother came back last night. A．until B．if C．because D．unless 3．（2024·四川泸州·中考真题）You will never truly understand your parents’ great love ______ you grow up. A．until B．if C．since D．as 4．（2023·甘肃武威·中考真题）Let’s wait ________ the rain stops. A．so B．while C．since D．until 5．（2025·四川凉山·中考真题）—Labor education is important for students’ development. —Sure. ________ schools put it into practice, students will be more independent. A．Although B．Unless C．If 6．（2025·四川乐山·中考真题）It is good for your health ________ you take a walk after supper. A．until B．if C．although 7．（2024·江苏南京·中考真题）Technology can be of great help ________ we make an effort to control it and use it right. A．if B．before C．though D．until 8．（2024·海南·中考真题）—Betty, you will miss the school bus ________ you don’t get up early tomorrow morning. —I won’t, Dad. A．so that B．if C．though 9．（2024·黑龙江哈尔滨·中考真题）— Lily, ________ you are free after school, let’s go to the shop and buy a gift for Father. —OK, Lucy. Tomorrow is Father’s birthday. I almost forgot it. A．until B．if C．unless 10．（2024·江苏徐州·中考真题）If you are lazy in spring, you ________ nothing in autumn. A．harvested B．will harvest C．are harvesting D．have harvested 11．（2023·海南·中考真题）Helen Keller was blind. ________ she lived in the dark, she always believed a dream would light up her life. A．If B．Unless C．Although 12．（2025·海南·中考真题）After the speech, it was time for photos. ________ some of our eyes were wet, we still tried to show bright smiles. A．But B．So C．Although 13．（2025·江苏无锡·中考真题）________ it may not work on everyone, it may work on you. A．Though B．But C．Because D．Since 14．（2023·上海·中考真题）The team completed the task ________ they had met with many difficulties. A．until B．though C．unless D．because 15．（2024·四川攀枝花·中考真题）We should keep our hearts open ________ we can find more and more chances to get to know more people and their cultures. A．so that B．as soon as C．as long as D．even though 16．（2025·黑龙江绥化·中考真题）Nowadays more and more people take exercise every day ________ they can have healthier bodies. A．such that B．in order to C．so that 17．（2025·四川成都·中考真题）Xu Dawei wants to pass the Civilian Mobile Library on to his son ________ it can stay open forever. A．before B．although C．so that 18．（2023·内蒙古·中考真题）Our teacher asks us to read newspapers every day ________ we can find out what’s going on around the world. A．so that B．even though C．in order to D．as soon as 19．（2023·江苏徐州·中考真题）Let’s take the simple steps today ________ we will save the world for our grandsons and granddaughters tomorrow. A．unless B．until C．so that D．though 20．（2022·四川成都·中考真题）Mary has learned a lot about the history of Sichuan _______ she can be a tour guide. A．even if B．as soon as C．so that 二、选词填空 （2024·甘肃兰州·中考真题）阅读下面的短文，用方框中所给词的适当形式填空，使文意通顺，结构正确。（每个单词限用一次） ear    changeable    work    snow    something    also    while    dry    they    until Have you ever been to Dali? Dali is quite a beautiful place in Yunnan. The wind, the flowers, the 21 and the moon are not only landscapes and styles of Dali, but 22 its real sceneries and countless stories. There are nineteen peaks (山峰) in the Cangshan Mountain, all of 23 are snow-capped. This mountain, which extends across Dali, runs from north to south, 24 it reaches this small town with spring in the air. It is a companion to the Erhai Lake for thousands of years. The clouds of the Cangshan Mountain are 25 . When the clouds appear, fishing boats aren’t allowed to 26 in the lake. No matter what good weather it is now, it will soon be windy and the tides (潮汐) will be so high. It seems that the strong wind would only stop when the water in the lake became 27 . The Erhai Lake and the Cangshan Mountain make each other better. The shape of the lake looks like a(n) 28 . Many people come here every year. They won’t do 29 except sitting in the courtyard of a folk inn, enjoying the breeze (微风) from the lake and the nice sceneries. 30 riding a bike between the Erhai Lake and the Cangshan Mountain, you are really in a wonderland. （2024·甘肃临夏·中考真题）用方框中所给单词或短语的适当形式填空，使短文通顺、正确、连贯，每个单词或短语限用一次。 quick,  they,  in,  ear,  so that,  cold,  help,  pick up,  example,  why When it comes to rabbits, we always think of their long ears. But do you know 31 they have such long ears? With their long ears, rabbits can 32 sounds from up to three kilometers away. Most rabbits can move their ears in two different directions. Each ear can turn up to 270 degrees. This 33 them to hear the sounds from all directions. For 34 , when they hear the sounds of a wolf coming, the rabbits can 35 run away. Another reason why rabbits have long ears is for controlling 36 body temperature. Rabbits have many blood vessels (血管) in their long 37 . When a rabbit feels hot, the blood vessels will become greater 38 size. This allows more blood to move to its ears. As air blows over, it makes the blood cool down. Then the cool blood moves to other parts of the body 39 it feels comfortable. However, less blood moves to the rabbit’s ears on 40 days. This helps to keep the heat. ( 1 / 13 ) 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $