专题21-状语从句
备战2023年中考英语一轮复习语法专项练（通用版）
一、单项选择
1．Our classroom won’t be clean ________ we clean it every day. A．after 【答案】C
【详解】句意：如果我们不每天打扫，我们的教室就不会干净。考查连词辨析。after在……之后；while当……时候；unless除非，如果不；because因为。前半句表示“教室不会干净”，而后半句表示“我们每天打扫”。空白处应用unless，意为“除非”，引导条件状语从句。故选C。
2．The little boy won’t go to sleep unless his mom _________ him a story. A．tells 【答案】A
【详解】句意：小男孩不会去睡觉，除非他妈妈给他讲故事。考查条件状语从句的主将从现。分析句子结构，unless引导条件状语从句，主句中的“won’t”说明主句用一般将来时，根据“主将从现”原则，从句应用一般现在时来表示将来的动作。从句主语his mother为第三人称单数，因此动词tell也应用动词的第三人称单数形式tells。故选A。 3．My pen friend knows a lot about China ________ she has never been here. A．although 【答案】A
【详解】句意：我的笔友对中国很了解，尽管她从未来过这里。考查连词辨析。although虽然、尽管；if如果；because因为；until直到。根据句意可知，空前空后是让步关系，应用although引导让步状语从句。故选A。
4．A five-minute rest will refresh your mind ________ you feel stressed with schoolwork. A．unless 【答案】D
【详解】句意：当你在学业上感到压力时，一个五分钟的休息将使你的思维重新恢复活unless除非；because因为；although尽管；when当……时。力。考查连词辨析。根据“you feel stressed with schoolwork.”和“A five-minute rest will refresh your mind”可知空后是时
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B．while C．unless D．because
B．told C．is telling D．will tell
B．if C．because D．until
B．because C．although D．when
间状语从句，表示当有压力的时候。故选D。
5．It will cost you a lot of money ________ you choose to buy a flat in the city centre. A．if 【答案】A
【详解】句意：如果你选择在城市中心买一套公寓，它将花费你许多的钱。考查连词词义辨析。if如果，引导条件状语从句；although虽然，引导让步状语从句；so that以便于，引导目的状语从句；unless除非，引导条件状语从句。根据“It will cost you a lot of money”和“you choose to buy a flat in the city centre”可知，此处应用if引导条件状语从句，表示“如果”。故选A。
6．________ we walked into the museum, we saw thousands of beautiful butterflies. A．Now that 【答案】B
【详解】句意：我们一走进博物馆就看到成千上万只美丽的蝴蝶。考查连词辨析。Now that既然；As soon as一……就；Although虽然；So that因此。根据“we walked into the museum, we saw thousands of beautiful butterflies.”可知，表达“我们一走进博物馆就看到成千上万只美丽的蝴蝶。”用As soon as引导从句。故选B。 7．________ Jill isn’t feeling well today, ________ he still goes to school. A．Although; but 【答案】C
【详解】句意：虽然吉尔今天感觉不舒服，但他仍然去上学了。考查让步状语从句。根据“...Jill isn’t feeling well today...he still goes to school.”可知，although引导的让步状语从句不与but连用；且后一句是主句。故选C。
8．Tina keeps the good habit of checking her test paper ________ she finishes it. A．as if 【答案】D
【详解】句意：蒂娜保持着一做完试卷就检查的好习惯。考查连词辨析。as if似乎；in order that以便于；now that既然；as soon as一……就……。根据“checking her test paper …she finishes it”可知，一做完试卷就检查，故选D。 9．It’s raining outside. Stay at home ________. A．if you have an umbrella C．after it stops to rain 【答案】D
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B．although C．so that D．unless
B．As soon as C．Although D．So that
B．But; although C．Although; / D．but; although
B．in order that C．now that D．as soon as
B．since it stops D．till it stops
if you have an umbrella【详解】句意：外面在下雨。待在家里直到它停止。考查连词辨析。since it stops因为它停了；after it stops to rain在雨停之后；till it stops如果你有一把雨伞；
直到它停止。根据“It’s raining outside. Stay at home”可知，外面正在下雨，所以要待在家里直到雨停才能出去，故选D。
10．Mr. Zhao has given much money to Project Hope ________ he is not so rich. A．if 【答案】B
【详解】句意：赵先生给希望工程捐了很多钱，虽然他不是很富有。考查从属连词辨析。if如果；though虽然；because因为；unless除非。前后句之间表达的是一种相反的让步关系，因此用though引导让步状语从句。故选B。
11．I don’t know if it _________ tomorrow, but if it _________, I’ll stay at home. A．will rain; rains 【答案】A
【详解】句意：我不知道明天会不会下雨，但如果下雨，我会待在家里。考查if条件句和宾语从句。前半个句子中包含一个由if引导的宾语从句，根据时间标志词“tomorrow”可知，要用一般将来时，所以可以先排除选项CD；后半句子包含由if引导的条件状语从句，此时根据“主将从现”的原则，从句要用一般现在时，主语是第三人称单数，动词需要加s。故选A。
12．—Hurry up, Tony! We don’t have much time.
—Look at the heavy rain! I’m afraid ________ we take a taxi, we’ll still miss the train. A．if 【答案】D
【详解】句意：——快点，托尼！我们没有那么多时间了。——看看外面的大雨！我们即使乘出租车去，也会错过火车的。考查连词辨析。if如果；unless除非；so that为了；even if即使。根据“Look at the heavy rain”可知，这里是“even if”引导的让步状语从句，表示雨下的很大，即使乘坐出租车也赶不上火车了，故选D。 13．We still know little about the Moon ________ men have landed on it. A．since 【答案】B
考查连词辨析。【详解】句意：虽然人类已经登陆过月球，但我们对它仍然知之甚少。since自从；though虽然，尽管；if如果，倘若；because因为，由于。根据“We still know little about the Moon”和“men have landed on it”可知，空前一句“对月球知之甚少”和“人类
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B．though C．because D．unless
B．will rain; will rain C．rains; will rain D．rains; rains
B．unless C．so that D．even if
B．though C．if D．because
已经登上月球”之间是转折关系，空处需要填写表达转折关系的连词。故选B。 14．Tom has studied very hard ________ he came to our school. A．since 【答案】A
【详解】句意：汤姆自从来到我们学校以来一直学习很努力。考查连词辨析。since自从；when当……时；before在……以前；while当……时，“Tom has studied very hard”是现在完成时，“he came to our school”是一般过去时，所以句子是since引导的时间状语从句，故选A。
15．—Do I have to attend the ceremony on Thursday? —Oh, don’t come ________ you are busy. A．and 【答案】C
【详解】句意：——我必须参加周四的仪式吗？——如果你忙就别来了。考查连词。and而且；but但是；if如果；so所以。结合句意，此处表示在你忙的条件下，就不要来了，用if引导条件状语从句。故选C。
16．You never really understand a person ________ you consider things from his point. A．until 【答案】A
【详解】句意：直到你从一个人的角度考虑问题，你才会真正了解他。考查连词辨析。until直到；while当……时；because因为；if如果。根据“You never really understand a person … you consider things from his point”可知，直到你站在另外一个人的角度考虑问题，你才会真正懂他，故选A。
17．I think our middle school life is colourful and meaningful ________ I am always busy with schoolwork. A．because 【答案】C
【详解】句意：虽然我总是忙于学业，但是我认为我们的中学生活是丰富多彩和有意义的。考查从属连词辨析。because因为；unless除非；though尽管；as当，因为。根据“I think our middle school life is colourful and meaningful”和“ I am always busy with schoolwork”可知，前后句构成让步关系，应用though引导让步状语从句，表示“虽然学习很忙，但是中学生活很有意义”。故选C。
18．Dad sometimes goes to the supermarket with us ________ he hates going shopping.
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B．when C．before D．while
B．but C．if D．so
B．while C．because D．if
B．unless C．though D．as
A．because 【答案】C
B．so C．though D．if
because【详解】句意：爸爸有时会和我们一起去超市，虽然他讨厌购物。考查连词辨析。因为；so因此；though尽管；if如果。根据“Dad sometimes goes to the supermarket with us...he hates going shopping.”可知，尽管讨厌购物，还是和我们去超市，用though“尽管”，引导让步状语从句。故选C。
19．—Mom, I’m already 11 years old. Can I ride a shared bike? — No. You’re not allowed to do that _______ you are 12. A．when 【答案】C
【详解】句意：——妈妈，我已经11岁了。我可以骑共享单车吗？——不。你在12岁之前是不允许骑的。考查连词辨析。when当……时候；after在……之后；until直到；as因为。根据“You’re not allowed to do that ... you are 12.”可知，你不能骑直到你12岁；not…until…“直到……才……”，固定搭配，引导时间状语从句。故选C。 20．Teenagers should do some housework ________ they finish their homework. A．until 【答案】C
【详解】句意：青少年应该在完成家庭作业之后做一些家务活。考查连词。until直到；but但是；after在……之后；unless除非。根据“do some housework”及“they finish their homework”可知表达做完家庭作业之后做家务活，用连词“after”引导时间状语从句。故选C。
21．Li Hong still failed the exam yesterday, ________ she tried her best. A．if 【答案】C
【详解】句意：尽管李红尽了最大的努力，昨天她还是没通过考试。 考查连词辨析。if如果；because因为；though尽管；unless除非。“Li Hong still failed the exam yesterday”与“she tried her best”是让步关系，用though引导让步状语从句，故选C。 22．Many wild animals don’t have a safe place to live, ________ villages and farms are growing bigger and taking away their land. A．because 【答案】A
【详解】句意：很多野生动物没有安全的地方住，因为村子和农场正在逐渐扩大，夺走
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B．after C．until D．as
B．but C．after D．unless
B．because C．though D．unless
B．until C．although D．before
了它们栖息之地。考查连词。because因为；until直到；although尽管；before在……之前。根据“don’t have a safe place to live”及“villages and farms are growing bigger and taking away their land”可知，后面的句子表达原因，用连词“because”。故选A。 23．I don’t have to introduce her to you ________ you know the girl. A．until 【答案】C
until直到；【详解】句意：我不用把她介绍给你，因为你认识那个女孩。考查连词辨析。unless除非；since因为；but但是。根据“I don’t have to introduce her to you...you know the girl”可知前后两句是因果关系，前果后因，用since引导原因状语从句。故选C。 24．If the singer ________ to Hechi ________ September 20th, please call me. A．will get; on 【答案】B
【详解】句意：如果歌手9月20日到达河池，请给我打电话。考查动词时态和介词辨on后加具体到某一天或具体某一天的早晨、析。下午和晚上；in后加某年某月某季节。此处是if引导的条件状语从句，遵循“主祈从现”的原则，又因主语“the singer”是第三人称单数，动词用三单形式，可排除A、D选项；空二后“September 20th”表示具体的某一天，用介词on。故选B。
25．________ the weather improves, we’ll have to cancel the outdoor picnic. A．Unless 【答案】A
考查连词辨析。unless【详解】句意：除非天气好转，否则我们将不得不取消户外野餐。除非；if如果；because因为；when当……时。根据“the weather improves, we’ll have to cancel the outdoor picnic.”可知，除非天气好转，否则要取消野餐活动，用unless引导条件状语从句，故选A。
26．I won’t go to the movies this afternoon ________ I’m free. A．or 【答案】B
or否则，【详解】句意：除非我有空，否则今天下午我不会去看电影的。考查连词辨析。unless除非；because因为；than比。或者；根据“I won’t go to the movies this afternoon...I’m free.”可知，后句是前句的否定条件，除非有空否则不会去看电影。故选B。 27．You will not get the special gift ________ you finish all the tasks. A．after
B．unless C．since D．but
B．gets; on C．gets; in D．get; in
B．If C．Because D．When
B．unless C．because D．than
B．because C．while D．unless
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【答案】D
【详解】句意：除非你完成所有的任务，否则你不会得到特别的礼物。考查连词辨析。after在……之后；because因为；while当……时。unless除非。根据“You will not get the special gift … you finish all the tasks.”可知，本句是unless引导的条件状语从句，表示“除非”。故选D。
28．—What’s Cindy’s weekend plan?
—If it doesn’t rain, she ________ a trip to the Great Wall with her cousin. A．takes 【答案】C
【详解】句意：——辛迪的周末计划是什么？ ——如果不下雨，她将和表姐去长城旅行。 考查一般将来时。根据“If it doesn’t rain,”可知，这里是由if引导的条件状语从句，主句用一般将来时。符合“主将从现”原则。故选C。 29．—Do you always sleep with the window open? —Yes, _________ it’s really cold. A．unless 【答案】A
【详解】句意：——你总是开着窗户睡觉吗？——是的，除非真的很冷。考查连词的辨析。unless除非；since自从；because因为；if如果。根据应答语“Yes, … it’s really cold.”可知，前一句回答：是的，后一句表达应与前一句形成对比，表转折。故选A。 30．—It is impossible to finish the difficult task in such a short time on my own ________ both of us work together. —No problem. Let’s start! A．if 【答案】D
【详解】句意：——除非我们两个一起努力，否则我一个人不可能在这么短的时间内完成这项艰巨的任务。——没问题。让我们开始吧！考查连词辨析。if如果；but但是；because因为；unless除非。根据“It is impossible to finish the difficult task in such a short time on my own...both of us work together.”可知，前后句是条件关系，除非两个人一起努力，否则不能完成任务。故选D。
二、完成句子
31．如果你放弃，你就会落后。
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B．took C．will take D．is taken
B．since C．because D．if
B．but C．because D．unless
You _____________________________________. 【答案】will fall behind, if you give up
【详解】fall behind落后，if如果，you你，give up放弃。此处是if引导的条件状语从句，满足“主将从现”原则，故填will fall behind, if you give up。 32．北京冬奥会开幕式很精彩，我们都很欣赏。
The opening ceremony of Beijing Winter Olympics ______________ we all enjoyed it. 【答案】was so wonderful that##was so excellent that
【详解】本句是“so...that...”句式，意为“如此……以致……”；wonderful / excellent “精彩的”；根据“北京冬奥会开幕式”可知句子是一般过去时。故填was so wonderful/excellent that。
33．梅梅要等到雨停后才会离开这儿。
Meimei ________ ________ here ________ the rain ________. 【答案】 won’t leave until stops
【详解】直到……才：not...until，引导时间状语从句，遵循“主将从现”，主句用一般将will not=won’t，leave；来时will do，离开：从句主语是the rain，谓语动词用三单stops“停止”。故填won’t；leave；until；stops。
34．宇航员在太空中进行的实验颇有价值，值得开展。
The experiments done in space by the astronauts are so valuable ____________________. 【答案】that they are worth carrying out/that it is worth carrying them out
【详解】根据中英文可知，此处空对应的中文为“值得开展”，结合“so valuable”可知，be worth doing“值得做”；carry out“实行，此处为so…that引导的结果状语从句，开展”。故填that they are worth carrying out/that it is worth carrying them out。 35．这本书我已经买了一个星期了。它如此精彩，以至于我决定再看一次。 I ________ the book for a week. It is ________ that I decide to read it once more. 【答案】 have had so wonderful##so great
【详解】由 for a week可知，第一个空应该用延续性动词have意为“买，拥有”，此处为现在完成时，主语是I，因此助动词用have，所以这里填have had；第二个空wonderful意为“精彩的”或者用great意为“美妙的”。这里是so…that…意为“如此……以至于……”，所以此处填so wonderful或者so great。故填have had；so wonderful/so great。 36．这个问题太难了，几乎没有学生能回答出来。
This question was ________ ________ ________ few students could answer it. 【答案】 so difficult that
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【详解】根据语境可知本题考查so…that…表示“如此……以至于……”的意思，so后面加形容词。difficult表示“难的，困难的”。故填so；difficult；that。 37．孙俪是如此有表演天赋,以至于她经常被高度评价。 Sun Li has ________________________________________. 【答案】such a gift for action that she is often spoken highly of
【详解】so/such...that...“如此……以致于……”，是结果状语从句的连词；have a gift for sth“有某方面的天赋”，此处修饰名词，连词应用such...that...结构，speak highly of“高度评价”，是固定短语，从句主语用she代替孙俪，此处应用被动语态，often“经常”，是一般现在时的标志词，故填such a gift for action that she is often spoken highly of。 38．现代医学发展如此迅速，以至于绝大多数眼疾可以被治愈。 Modern science is developing so quickly that ____________________. 【答案】most eye diseases can be cured
most，eye diseases；can；be cured。【详解】大多数：后接名词复数；眼疾：可以：被治愈：情态动词后接动词原形；故填most eye diseases can be cured。 39．你最好把这些文件按类分好，以便能及时分发出去。
You’d better ________________________________________________________________. 【答案】separate the papers into groups so that they can be handed out on time
【详解】separate...into...“把……分成……”；papers“文件”；groups“组”；so that“以便”，引导目的状语从句；they“它们”，代指文件；can be handed out“能够被分发”，是含情态动词的被动语态；on time“准时”。故填separate the papers into groups so that they can be handed out on time。
40．既然这个项目很有价值，为何不尽快开展呢？ Why don’t you _____________________________________?
【答案】carry out the project as soon as possible since it is of great value
【详解】why don’t you do sth“你为什么不做某事”，carry out“开展”， the project“这个项目”，as soon as possible“尽快”，since“既然” ，be of great value“很有价值”；根据汉意可since引导的原因状语从句为一般现在时，be动词用is。知，主语为it，故填carry out the project as soon as possible since it is of great value。
三、改写句子
41．He is the tallest in his class.（变成同义句） No one ________ in his class is as ________ as he.
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【答案】 else tall
【详解】句意：他是班上最高的。此句也可表达为“他班上没有其他的人和他一样高。” else其他的，修饰不定代词要后置，as...as...和……一样，as和as中间填形容词或副词原级，填tall。故填else；tall。
42．The scientist was so weak that he couldn’t continue with his research (改为简单句) The scientist was ________ ________ to continue with his research. 【答案】 too weak
【详解】句意：这位科学家太虚弱了，无法继续他的研究。“so+形容词/副词
+that+sb.+can’t/couldn’t do sth.”意思是“如此（太）……，而不能……”，可以改成too+形容词/副词+to do sth.“太……，而不能……”。故填too；weak。
43．We were very tired. We took a taxi back to the hotel to rest our feet. (保持句意不变) We were ________ tired ________ we took a taxi back to the hotel to rest our feet. 【答案】 so that
【详解】句意：我们很累。我们乘出租车回酒店休息。根据题意是变成同义句，so+形容词+that从句，表示“如此……以至于……”，表示“我们如此累，以至于乘出租车去酒店休息”，与原句同义，故填so；that。
44．Joan got up early in order to reach her hometown before dark.（保持句意基本不变） Joan got up early ________ ________ she could reach her hometown before dark. 【答案】 so that
【详解】句意：琼起得很早，以便天黑前赶到老家。题目要求改为同义句，空格后为句子，应用so that，意为“为了，以便”，引导目的状语从句。故填so；that。
45．Anyone will fall behind if he doesn’t have a good learning habit. (保持句意基本不变) Anyone will fall behind _________ he _________ a good learning habit. 【答案】 unless has
【详解】句意：如果没有良好的学习习惯，任何人都会落后。此题为同义句转换，可以改为“除非有良好的学习习惯，否则任何人都会落后”，因此第一个空用“unless”，意为“除非”；从句时态为一般现在时，主语he是第三人称单数，谓语动词应把have变为has，因此第二个空用“has”。故填unless；has。
46．Don’t touch the machine if the teacher doesn’t allow you to. (保持句意基本不变) Don’t touch the machine ________ the teacher ________ you to. 【答案】 unless allows
【详解】句意：如果老师不允许，请不要触摸机器。改为同义句时，可改为“除非老师
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允许，不然不要触摸机器”，除非：unless，引导条件状语从句，遵循“主将从现”，从句用一般现在时，主语是“the teacher”，谓语动词用第三人称单数allows“允许”。故填unless；allows。
47．Bing Dwen Dwen is popular. It is really hard to get one.（合并两句为一句） Bing Dwen Dwen is ________ popular ________ it is really hard to get one. 【答案】 so that
【详解】句意：冰墩墩很受欢迎。真的很难买到。根据句意以及语境可知，将两个句子合并起来可以用so+adj/adv+that引导的结果状语从句。根据“Bing Dwen Dwen is…popular…it is really hard to get one.”可知，本句中的“popular”受欢迎的，是形容词，它的前面需填so，其后需填that。故填so；that。
48．The lecture from China’s space station was very interesting. It attracted many children. (合并为一句)
The lecture from China’s space station was ________ interesting ________ it attracted many children.
【答案】 so that
【详解】句意：来自中国空间站的讲座很有趣。它吸引了许多孩子。原句表示“讲座如that。 此有趣以致于吸引了许多孩子”，用so+adj+that...句型引导结果状语从句，故填so；49．We’ll go bike riding if it doesn’t rain tomorrow. （同义句转换） We’ll go bike riding _______ it ________ tomorrow. 【答案】 unless rains
【详解】句意：如果明天不下雨，我们就去骑自行车。根据题目要求可知，if...not...=unless“除非”，且遵循主将从现原则，主语“it”是第三人称单数，第二空rains符合句意。故填unless；rains。
50．Use you mind, and you will work out the solution by yourself.（保持句意基本不变） _________ _________ use your mind, you will work out the solution by yourself. 【答案】 If you
“use your mind”【详解】句意：动动脑筋，你就能自己想出解决办法来。根据句意及语境，是“you will work out the solution by yourself.”的条件，故此句可改成if引导的条件状语从句，遵循“主将从现”的原则。故第一空是if，放在句首首字母大写，第二空是主语you。故填If；you。
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