Unit 1【刷语法】条件状语从句和原因状语从句（重点语法提升练）-2026-2027学年九年级英语上册单元模块满分必刷题（新教材外研版）

**基本信息** 聚焦条件与原因状语从句，以规则提炼为核心，构建“概念-规则-应用”三阶训练体系，提升语言运用与逻辑思维能力。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |条件状语从句|单选25题+完成句子10题|提炼“主将从现”规则、unless与if not转换技巧|从引导词（if/unless/as long as）识别，到时态规则应用，再到语境转换，形成“识别-规则-应用”递进链条| |原因状语从句|单选25题+完成句子10题|明确because与so不可并用、since表已知理由用法|从引导词（because/since/as）功能差异，到逻辑关系判断，再到情境表达，构建“功能-逻辑-表达”认知路径|

2026-2027学年九年级英语上册单元模块满分必刷题（新教材外研版） Unit 1 Teenagers today【刷语法】(重点语法提升练) 条件状语从句和原因状语从句 条件状语从句 条件状语从句的引导词主要有as long as(只要), if（如果）, unless（除非）。 在条件状语从句中，从句常用一般现在时表将来，即主将从现。 如：You will fail the exam if you don’t work hard.=You will fail the exam unless you work hard. 如果不努力学习，你考试会不及格的。 原因状语从句 原因状语从句的引导词有because，since，as等。 注意：1. because和so不能同时使用。 如：He didn’t come to school yesterday because he was ill. 他昨天没来上学，因为他生病了。 2. since引导原因状语从句表示显然的或已为人知的理由，表示“因为，既然” 如：Since everyone is here, let’s start.既然大家都到期了，我们就开始吧。 语法过关小测 过关测试满分：70分 时间：60分钟 一、单项选择(每小题1分，共50分) 1．—Could you tell me whether it ________ tomorrow? —If it ________, we will put off the sports meeting. A．will rain; rains B．rains; will rain C．would rain; rained D．is raining; rain 2．Dad and I will go to see a movie ________ I can finish my homework before 7:00 p. m. A．if B．and C．but 3．We won’t go camping ______ the weather becomes fine tomorrow. A．if B．unless C．when D．though 4．We can save much labour ________ smart robots appear in daily life. A．because B．though C．if D．until 5．—The ninth graders in our school took part in the P.E. test last week and some of them got full marks. —Yes. ________ you want to be stronger and pass it next year, practice more. A．Until B．If C．Unless D．Or 6．I don’t know if he ________ tomorrow. If he ________ here, I will tell you. A．comes; will arrive B．will come; will arrive C．comes; arrives D．will come; arrives 7．Nothing is impossible ________ you put your heart into it! A．as much as B．as possible as C．as far as D．as long as 8．________ it is fine tomorrow, we’ll have a picnic. A．When B．Even though C．If D．Because 9．Life will be easier if you ________ stronger. A．get B．got C．will get D．were getting 10．We’ll achieve our dreams someday ________ we keep trying and never give up. A．as long as B．even though C．so that D．as if 11．We cannot win the game ________ everyone in our team pulls together. A．while B．since C．whenever D．unless 12．You will get an album ________ you win the competition. A．although B．if C．so that 13．—May I go to the movie with you? —I’m afraid not, ________ you have a ticket. Because I have only one. A．if B．though C．unless D．but 14．Mr Smith likes to sleep with the windows open ________ it is really cold outside. A．if B．whether C．unless D．since 15．—I’m trying to live a greener life by taking the bus to school. —Great idea! Small changes matter a lot ________ we all make them. A．if B．unless C．until D．before 16．— Will you join us at the party next Sunday? — I will join you if I ________ my work next Saturday. A．finish B．will finish C．finished D．am going to finish 17．I don’t know ________ Jack will come and join us. ________ he comes, I’ll call you. A．if; If B．if; Whether C．whether; That D．that; Whether 18．________ you feel tired during study, you can stop to have a short rest to relax yourself. A．If B．Although C．Until D．Before 19．— ________ it’s difficult for you to complete the whole task in one go, try to divide it into small pieces and do them one by one. — Thank you for your advice. I’ll try it. A．Before B．If C．Unless D．Until 20．Grandma will be cheered up ________ she sees you return for the Spring Festival. A．if B．since C．whether D．unless 21．We’ll be halfway to solving the problem ________ we share our problems with each other. A．unless B．because C．though D．if 22．Zhang Guimei believes girls can change lives ________ they get a good education. A．if B．because C．until D．although 23．________ everyone saves water in daily life, our living environment will become much better. A．If B．Though C．Unless D．While 24．—Let’s go hiking this weekend if it ________ fine. —That sounds great! A．will be B．is C．was D．has been 25．—Labor education is important for students’ development. —Sure. ________ schools put it into practice, students will be more independent. A．Although B．Unless C．If D．Because 26．________ Hefei’s drone industry develops fast, it has won wide attention across China. A．Although B．Because C．While D．Unless 27．—Yes, Mr Smith, everybody is here. —________ everybody is here, let’s begin our class. A．Because B．Whether C．When D．Since 28．—Let’s share these useful materials with each other. —Good idea. ________ we are friends, we can learn from each other. A．As B．Unless C．Though 29．My brother Peter wants to join the art club ________ he is interested in painting. A．so that B．because C．as soon as D．until 30．________ we are running out of time, I suggest taking a taxi to go there. A．Unless B．As C．Though 31．—Why do you keep on reading traditional culture books? —I do it ________ I want to know more about local Anhui customs. A．so that B．because C．though D．once 32．— It is said that Changzhou Damagao is famous and delicious. — ________ we are here, why not try some? A．Since B．Unless C．Although D．Whenever 33．Talking to pets can help you let go of problems ________ you give them your full attention. A．unless B．as C．as if D．even though 34．—Why won’t the machine work? —________ its parts are broken. A．As B．Since C．Because D．For 35．________ time is limited, we’ll finish our imagination sharing in ten minutes. A．Though B．Since C．After D．If 36．He cried ________ he failed the exam. A．because B．because of C．for D．with 37．________ poor eyesight has become a common problem among teenagers, schools should cut down unnecessary screen-based homework. A．Although B．Since C．Unless D．If 38．More and more people choose green travel ________ it can reduce air pollution. A．but B．or C．until D．because 39．I like the school ________ the teachers here are very nice. A．but B．or C．because D．so 40．We are proud of our country ________ Chinese astronauts have successfully grown fresh vegetables in the space station. A．because B．unless C．though D．until 41．—It’s widely known that xiaolongbao is a local delicacy. —Well, ________ we have been in Wuxi, it would be a shame to leave without tasting it. A．though B．unless C．since D．until 42．We’d better get to school earlier ________ it’s our School Sports Day. A．and B．so C．though D．because 43．________ we live together, we should share the housework to have a comfortable home. A．If B．Since C．Though D．Unless 44．Some local dialects (方言) in Fujian are gradually disappearing ________ they are less used in daily life. A．though B．if C．because 45．________ Zhang Xue kept on improving his motorcycles for over 20 years and never gave up, his team finally won the WSBK championship (冠军) and made history. A．Although B．Because C．If D．So 46．Keeping a reading diary is useful ________ it helps me understand the ideas better. A．because B．though C．until D．unless 47．Celina didn’t buy the dictionary yesterday ________ her aunt would give her one. A．until B．because C．if D．before 48．Many young people return to their hometown ________ they want to stay with their families and build their hometown. A．so B．but C．because 49．Many people like shopping online at home ________ it’s very easy and saves much time. A．though B．because C．so D．after 50．________ more than 80% of the villagers now have access to clean tap water, the local government is planning a new recycling system. A．Unless B．Though C．Since D．Until 二、完成句子(每小题2分，共20分) 51．既然都到了，让我们开始吧。 ________ everyone is here, let’s ________. 52．他昨天没来上学，因为生病了。 He didn’t come to school yesterday ________ he ________ ill. 53．如果每周举办一次这样的图书分享活动，那将有助于我们培养良好的阅读习惯。 ________ we hold such a book sharing event once a week, it ________ ________ ________ form a good reading habit. 54．如果我们学好英语，就能更好地向外国游客介绍广交会。 We ________ ________ the Canton Fair to foreign visitors better ________ we ________ English well. 55．如果明天下雨，运动会将被推迟。 ________ it ________ tomorrow, the sports meeting will be put off. 56．读书破万卷，下笔如有神。 If you read ten thousand books, you ________ ________ very well. 57．We can’t start the meeting unless our class teacher is here. (保持句意基本不变) We can’t start the meeting ________ our class teacher ________ here. 58．如果你不努力工作，你就不会成功。 You won’t ________ ________ ________ ________ work hard. 59．既然都到了，让我们开始吧。 __________ __________ is here, let’s begin. 60．既然没有人看到，我拒绝相信你。 ________ nobody saw it, I ________ ________ ________ you. 学科网（北京）股份有限公司 $ 2026-2027学年九年级英语上册单元模块满分必刷题（新教材外研版） Unit 1 Teenagers today【刷语法】(重点语法提升练) 条件状语从句和原因状语从句 条件状语从句 条件状语从句的引导词主要有as long as(只要), if（如果）, unless（除非）。 在条件状语从句中，从句常用一般现在时表将来，即主将从现。 如：You will fail the exam if you don’t work hard.=You will fail the exam unless you work hard. 如果不努力学习，你考试会不及格的。 原因状语从句 原因状语从句的引导词有because，since，as等。 注意：1. because和so不能同时使用。 如：He didn’t come to school yesterday because he was ill. 他昨天没来上学，因为他生病了。 2. since引导原因状语从句表示显然的或已为人知的理由，表示“因为，既然” 如：Since everyone is here, let’s start.既然大家都到期了，我们就开始吧。 语法过关小测 过关测试满分：70分 时间：60分钟 一、单项选择(每小题1分，共50分) 1．—Could you tell me whether it ________ tomorrow? —If it ________, we will put off the sports meeting. A．will rain; rains B．rains; will rain C．would rain; rained D．is raining; rain 【答案】A 【详解】句意：——你能告诉我明天是否会下雨吗？——如果下雨，我们将推迟运动会。 whether引导宾语从句，主句中的Could表示委婉语气，不表示过去，根据时间状语“tomorrow”可知，从句应使用一般将来时，填will rain；If引导条件状语从句，遵循“主将从现”原则，主句“will put off”为一般将来时，从句需用一般现在时表示将来，主语it为第三人称单数，谓语动词需用单三形式，填rains。 2．Dad and I will go to see a movie ________ I can finish my homework before 7:00 p. m. A．if B．and C．but 【答案】A 【详解】句意：如果我能在晚上7点前完成作业，我和爸爸就去看电影。 if如果；and和；but但是。根据句意可知，“完成作业”是“去看电影”的条件，if引导条件状语从句，表示假设情况。 3．We won’t go camping ______ the weather becomes fine tomorrow. A．if B．unless C．when D．though 【答案】B 【详解】句意：除非明天天气变好，否则我们不会去露营。 if如果；unless除非；when当……时；though虽然。根据“We won’t go camping...the weather becomes fine tomorrow.”可知，天气好是露营的前提，用unless引导条件状语从句。 4．We can save much labour ________ smart robots appear in daily life. A．because B．though C．if D．until 【答案】C 【详解】句意：如果智能机器人出现在日常生活中，我们可以节省很多劳动力。 because因为，引导原因状语从句；though虽然，尽管，引导让步状语从句；if如果，引导条件状语从句；until直到……为止，引导时间状语从句。分析句子可知，“smart robots appear in daily life（智能机器人出现在日常生活中）”是一种条件，“We can save much labour（我们可以节省很多劳动力）”是在这种条件下产生的结果，即此处需要if引导的条件状语从句，故C项符合语境。 5．—The ninth graders in our school took part in the P.E. test last week and some of them got full marks. —Yes. ________ you want to be stronger and pass it next year, practice more. A．Until B．If C．Unless D．Or 【答案】B 【详解】句意：——我们学校九年级的学生上周参加了体育测试，而且其中一些人得了满分。——是的。如果你想变得更强壮并在明年通过考试，就多练习。 Until直到……为止；If如果；Unless除非；如果不；Or或者；否则。根据“________ you want to be stronger and pass it next year, practice more.”可知，后半句是祈使句，前半句表示条件，逻辑为“如果想要……就……”，应用If引导条件状语从句。 6．I don’t know if he ________ tomorrow. If he ________ here, I will tell you. A．comes; will arrive B．will come; will arrive C．comes; arrives D．will come; arrives 【答案】D 【详解】句意：我不知道他明天是否会来。如果他到达这里，我会告诉你。 第一空所在句是if引导的宾语从句，if 意为“是否”，根据时间状语tomorrow可知，宾语从句谓语用一般将来时will come；第二空所在句是if 引导的条件状语从句，if意为“如果”，遵循“主将从现”原则，主句是一般将来时，从句用一般现在时，主语he是第三人称单数，谓语动词用arrives。 7．Nothing is impossible ________ you put your heart into it! A．as much as B．as possible as C．as far as D．as long as 【答案】D 【详解】句意：只要你用心去做，没有什么是不可能的。 分析句子可知，前后句是条件关系，需用表示“只要”含义的短语。as much as表程度，as far as表距离或范围，as long as表条件。B项搭配不当。根据句意可知选 as long as。 8．________ it is fine tomorrow, we’ll have a picnic. A．When B．Even though C．If D．Because 【答案】C 【详解】句意：如果明天天气好，我们将去野餐。 When当……时；Even though即使；If如果；Because因为。根据主句中“we’ll have”可知，主句是一般将来时，根据从句中动词“is”可知，从句是一般现在时，所以此处遵循“主将从现”的原则，且句意表示假设条件，应该用If 引导条件状语从句。故选C。 9．Life will be easier if you ________ stronger. A．get B．got C．will get D．were getting 【答案】A 【详解】句意：如果你变得更强壮，生活会更轻松。 根据if引导的条件状语从句，遵循“主将从现”原则，从句用一般现在时表将来，主语“you”是第二人称，谓语动词用原形get，应填get。 10．We’ll achieve our dreams someday ________ we keep trying and never give up. A．as long as B．even though C．so that D．as if 【答案】A 【详解】句意：只要我们不断尝试、永不放弃，总有一天我们会实现我们的梦想。 as long as只要；even though即使；so that以便；as if好像。根据前后句的逻辑关系可知，“不断尝试、永不放弃”是“实现梦想”的条件，应填as long as，引导条件状语从句。 11．We cannot win the game ________ everyone in our team pulls together. A．while B．since C．whenever D．unless 【答案】D 【详解】句意：我们不可能赢得比赛，除非我们团队中的每个人都齐心协力。 while当……时；since自从，因为；whenever每当；unless除非。根据主句“We cannot win the game”和从句“everyone pulls together”可知，从句是主句实现的前提条件，表示“除非大家齐心协力，否则不能赢”，应用unless引导条件状语从句。 12．You will get an album ________ you win the competition. A．although B．if C．so that 【答案】B 【详解】句意：如果你赢得比赛，你将获得一张专辑。 although尽管；if如果；so that以便。根据“You will get an album...you win the competition.”可知，赢得比赛是获得专辑的条件，应用if引导条件状语从句。 13．—May I go to the movie with you? —I’m afraid not, ________ you have a ticket. Because I have only one. A．if B．though C．unless D．but 【答案】C 【详解】句意：——我可以和你一起去看电影吗？——恐怕不行，除非你有一张票。因为我只有一张。 if如果；though虽然；unless除非；but但是。根据“Because I have only one.”可知只有一张票，推测出对方不能同行，除非对方自己有票。 14．Mr Smith likes to sleep with the windows open ________ it is really cold outside. A．if B．whether C．unless D．since 【答案】C 【详解】句意：史密斯先生喜欢开着窗户睡觉，除非外面真的很冷。 if如果；whether是否；unless除非；since自从/因为。根据“sleep with the windows open...it is really cold outside”可知，史密斯先生习惯开窗睡觉，但天气真的很冷时是例外情况，unless意为“除非”，引导条件状语从句，符合语境。 15．—I’m trying to live a greener life by taking the bus to school. —Great idea! Small changes matter a lot ________ we all make them. A．if B．unless C．until D．before 【答案】A 【详解】句意：——我正试图通过乘公交车上学来过更环保的生活。——好主意！如果我们都做出这些改变，小的改变意义重大。 if如果；unless除非；until直到；before在……之前。根据“Great idea!”可知对方表示赞同，结合语境可知此处表示条件关系，意为“如果”大家都做出改变，积少成多，影响很大，应用if引导条件状语从句。 16．— Will you join us at the party next Sunday? — I will join you if I ________ my work next Saturday. A．finish B．will finish C．finished D．am going to finish 【答案】A 【详解】句意：——下周日你会参加我们的聚会吗？——如果我下周六完成工作，我就参加。 if引导条件状语从句，时态遵循“主将从现”原则。主句“I will join”是一般将来时，从句应用一般现在时表将来。finish是一般现在时，故选A。 17．I don’t know ________ Jack will come and join us. ________ he comes, I’ll call you. A．if; If B．if; Whether C．whether; That D．that; Whether 【答案】A 【详解】句意：我不知道杰克是否会来加入我们。如果他来，我会打电话给你。 if 既可引导宾语从句表示“是否”，也可引导条件状语从句表示“如果”；whether只能引导宾语从句表示“是否”；that引导宾语从句无实义。第一空位于know后作宾语从句，表示“是否”，if或whether均可；第二空引导条件状语从句，表示“如果”，只能用if。故选A。 18．________ you feel tired during study, you can stop to have a short rest to relax yourself. A．If B．Although C．Until D．Before 【答案】A 【详解】句意：如果你在学习中感到疲惫，可以停下来短暂休息放松自己。 考查连词辨析。if如果；although虽然；until直到；before在……之前。假设情境给出建议，选A。 19．— ________ it’s difficult for you to complete the whole task in one go, try to divide it into small pieces and do them one by one. — Thank you for your advice. I’ll try it. A．Before B．If C．Unless D．Until 【答案】B 【详解】句意：——如果一次性完成整个任务对你来说很难，试着把它分成小块并逐个完成。——谢谢你的建议。我会试试的。 Before在……之前；If如果；Unless除非；Until直到。根据答语“Thank you for your advice.”可知上句是在提建议，结合句意可知前后句为条件关系，表示“如果”很难就拆分任务，所以用If。 20．Grandma will be cheered up ________ she sees you return for the Spring Festival. A．if B．since C．whether D．unless 【答案】A 【详解】句意：如果奶奶看到你回来过春节，她会高兴起来的。 if如果；since自从；既然；whether是否；unless除非。根据“Grandma will be cheered up... she sees you return for the Spring Festival.”可知，奶奶高兴是建立在“看到你回来”这个条件之上的，表示假设条件，应用if引导条件状语从句。 21．We’ll be halfway to solving the problem ________ we share our problems with each other. A．unless B．because C．though D．if 【答案】D 【详解】句意：如果我们彼此分享问题，我们将会解决一半。 前文是结果，表明后文是达成该结果的条件，if 引导条件状语从句。unless“除非”、because“因为”、though“虽然”均不符合逻辑。 22．Zhang Guimei believes girls can change lives ________ they get a good education. A．if B．because C．until D．although 【答案】A 【详解】句意：张桂梅相信女孩们如果接受良好的教育就能改变命运。 if如果；because因为；until直到……为止；although尽管，虽然。根据“Zhang Guimei believes girls can change lives...they get a good education.”可知，在她们接受良好教育的条件下，她们就能改变命运，因此用连词if引导条件状语从句。 23．________ everyone saves water in daily life, our living environment will become much better. A．If B．Though C．Unless D．While 【答案】A 【详解】句意：如果每个人在日常生活中节约用水，我们的生活环境会变得更好。 if如果；though虽然；unless除非；while然而。if用来引导“如果……就……”的正向条件关系。“节约用水”是条件，“环境变好”是这个条件带来的积极结果。 24．—Let’s go hiking this weekend if it ________ fine. —That sounds great! A．will be B．is C．was D．has been 【答案】B 【详解】句意：——如果天气是好的，我们这个周末就去徒步旅行吧。——听起来很棒！ 根据“if it...fine”可知，这是if引导的条件状语从句。主句“Let’s go hiking...”是祈使句，遵循“主祈从现”原则，从句需用一般现在时表将来。 25．—Labor education is important for students’ development. —Sure. ________ schools put it into practice, students will be more independent. A．Although B．Unless C．If D．Because 【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，学生将会更独立。 Although虽然；Unless除非；If如果；Because因为。根据“schools put it into practice, students will be more independent.”可知，学校付诸实践是学生更独立的肯定条件，表示“如果”，应用if引导条件状语从句。 26．________ Hefei’s drone industry develops fast, it has won wide attention across China. A．Although B．Because C．While D．Unless 【答案】B 【详解】句意：因为合肥的无人机产业发展迅速，它在全国范围内赢得了广泛关注。 Although虽然；Because因为；While然而/当……时；Unless除非。根据题干“develops fast”与“has won wide attention”可知，发展快是赢得关注的原因，应用Because引导原因状语从句，应填Because。 27．—Yes, Mr Smith, everybody is here. —________ everybody is here, let’s begin our class. A．Because B．Whether C．When D．Since 【答案】D 【详解】句意：——是的，史密斯先生，大家都到了。——既然大家都到了，让我们开始上课吧。 Because因为；Whether是否；When当……时候；Since既然。根据上文“Yes, Mr Smith, everybody is here.”可知，人员到齐是既定事实，此处表示基于已知事实提出建议，Since符合语境，意为“既然”。 28．—Let’s share these useful materials with each other. —Good idea. ________ we are friends, we can learn from each other. A．As B．Unless C．Though 【答案】A 【详解】句意：——让我们彼此分享这些有用的资料吧。——好主意。因为我们是朋友，我们可以互相学习。 As因为；Unless除非；Though虽然。根据“Good idea.”可知说话人同意分享资料，后半句“we are friends”是“we can learn from each other”的原因，前后构成因果关系。应填As，引导原因状语从句。 29．My brother Peter wants to join the art club ________ he is interested in painting. A．so that B．because C．as soon as D．until 【答案】B 【详解】句意：我的哥哥彼得想加入美术俱乐部，因为他对绘画感兴趣。   so that以便；because因为；as soon as一……就……；until直到。根据前句“My brother Peter wants to join the art club”和后句“he is interested in painting”可知，后句是前句的原因，即“想加入美术俱乐部”的原因是“对绘画感兴趣”，此处表示原因，应填because。 30．________ we are running out of time, I suggest taking a taxi to go there. A．Unless B．As C．Though 【答案】B 【详解】句意：因为我们时间不多了，我建议乘出租车去那里。 Unless除非；As因为；Though虽然。根据“________ we are running out of time, I suggest taking a taxi to go there.”可知，时间紧迫是建议打车的原因，前后句构成因果关系，应用As引导原因状语从句。 31．—Why do you keep on reading traditional culture books? —I do it ________ I want to know more about local Anhui customs. A．so that B．because C．though D．once 【答案】B 【详解】句意：——你为什么坚持读传统文化书籍？——因为我想了解更多安徽本土民俗。 so that为了；because因为；though虽然；once一旦。根据答语中“I want to know more about local Anhui customs”可知，这正是坚持阅读传统文化书籍的原因，回答原因用because。 32．— It is said that Changzhou Damagao is famous and delicious. — ________ we are here, why not try some? A．Since B．Unless C．Although D．Whenever 【答案】A 【详解】句意：——据说常州大麻糕很有名且美味。——既然我们在这里，为什么不尝尝呢？ Since既然；由于；Unless除非；Although虽然；Whenever无论何时。句中“why not try some?”是提出建议，结合“we are here”，说明此处表示“既然我们在这儿”，表示原因或理由，since语境。 33．Talking to pets can help you let go of problems ________ you give them your full attention. A．unless B．as C．as if D．even though 【答案】B 【详解】句意：和宠物聊天能帮助你放下烦恼，因为你把全部注意力都放在了这件事上。 unless除非；as因为；as if似乎；even though尽管。根据“Talking to pets can help you let go of problems ... you give them your full attention”可知，空格后是前文描述情况成立的原因，应填as。 34．—Why won’t the machine work? —________ its parts are broken. A．As B．Since C．Because D．For 【答案】C 【详解】句意：——为什么机器不工作？——因为它的零件坏了。 As引导原因状语从句时，语气较弱，多用于已知的、显而易见的原因，不直接回答why问句；Since语气比as稍强，但同样侧重“既然”，用于双方都知道的原因，不直接回答why问句；Because专门用来回答why引导的问句，语气最强，直接说明原因；For是并列连词，引导的分句通常放在主句后，补充说明理由，不能单独放在句首回答why问句。问句“Why won’t the machine work?”是在询问直接原因，要用Because回答。 35．________ time is limited, we’ll finish our imagination sharing in ten minutes. A．Though B．Since C．After D．If 【答案】B 【详解】句意：既然时间有限，我们将在十分钟内完成我们的想象力分享。 Though表让步，虽然/尽管；Since表已知原因，既然；After表时间先后，在……之后；If表条件，如果。根据句意“时间有限”是已知前提，应填Since。 36．He cried ________ he failed the exam. A．because B．because of C．for D．with 【答案】A 【详解】句意：他哭了，因为他考试不及格。 because因为；because of因为；for因为；with和、带有。结合句子结构可知，空格后为完整主谓句子，需用连词because引导原因状语从句；because of后接名词短语；for表原因前面加逗号，不能直接放在主句后解释直接原因；with不表原因，不符合语境。 37．________ poor eyesight has become a common problem among teenagers, schools should cut down unnecessary screen-based homework. A．Although B．Since C．Unless D．If 【答案】B 【详解】句意：由于视力差已经成为青少年中的一个普遍问题，学校应该减少不必要的基于屏幕的家庭作业。 Although虽然；Since由于，既然；Unless除非；If如果。前后句为因果关系，青少年视力差是减少屏幕作业的原因，因此应用Since引导原因状语从句。 38．More and more people choose green travel ________ it can reduce air pollution. A．but B．or C．until D．because 【答案】D 【详解】句意：越来越多的人选择绿色出行，因为它可以减少空气污染。 but但是；or或者；until直到；because因为。根据“it can reduce air pollution”可知，减少空气污染是选择绿色出行的原因，前后句是因果关系，应用because引导原因状语从句。 39．I like the school ________ the teachers here are very nice. A．but B．or C．because D．so 【答案】C 【详解】句意：我喜欢这所学校，因为这里的老师非常好。 but但是；or或者；because因为；so所以。根据“the teachers here are very nice”可知，后半句是前半句喜欢学校的原因，前后句构成因果关系，且后句表原因，应填 because。 40．We are proud of our country ________ Chinese astronauts have successfully grown fresh vegetables in the space station. A．because B．unless C．though D．until 【答案】A 【详解】句意：我们为我们的国家感到骄傲，因为中国宇航员已经在空间站成功种植了新鲜蔬菜。 because因为；unless除非；though虽然；until直到。根据“We are proud of our country”与“Chinese astronauts have successfully grown fresh vegetables in the space station”，前后构成因果关系，后句是前句的原因。故选because。 41．—It’s widely known that xiaolongbao is a local delicacy. —Well, ________ we have been in Wuxi, it would be a shame to leave without tasting it. A．though B．unless C．since D．until 【答案】C 【详解】句意：——众所周知，小笼包是当地美食。——嗯，既然我们已经在无锡了，如果不尝尝就离开会很遗憾。 though虽然；unless除非；since既然；until直到。根据“it would be a shame to leave without tasting it”可知，说话人认为应该尝尝小笼包，原因是“we have been in Wuxi”，前后是因果关系，用since表原因。 42．We’d better get to school earlier ________ it’s our School Sports Day. A．and B．so C．though D．because 【答案】D 【详解】句意：我们最好早点到学校，因为今天是我们的学校运动会。 and和，并且；so所以；though虽然；because因为。根据“We’d better get to school earlier”和“it’s our School Sports Day”可知，后者是前者早点到校的原因，应使用because引导原因状语从句。 43．________ we live together, we should share the housework to have a comfortable home. A．If B．Since C．Though D．Unless 【答案】B 【详解】句意：既然我们住在一起，为了拥有一个舒适的家，我们应该分担家务。 If如果；Since既然；由于；Though虽然；Unless除非。根据“we should share the housework”可知，前后句存在因果逻辑，因为住在一起所以应分担家务，Since引导原因状语从句符合语境。 44．Some local dialects (方言) in Fujian are gradually disappearing ________ they are less used in daily life. A．though B．if C．because 【答案】C 【详解】句意：福建的一些当地方言正在逐渐消失，因为它们在日常生活中较少被使用。 though虽然；if如果；because因为。根据“they are less used in daily life”可知，后半句是前半句方言消失的原因，前后构成因果关系，所以用because引导原因状语从句。 45．________ Zhang Xue kept on improving his motorcycles for over 20 years and never gave up, his team finally won the WSBK championship (冠军) and made history. A．Although B．Because C．If D．So 【答案】B 【详解】句意：因为张雪坚持改进他的摩托车超过20年且从未放弃，他的团队最终赢得了WSBK冠军并创造了历史。   Although虽然；Because因为；If如果；So所以。根据句意可知，“坚持改进摩托车20年且从未放弃”是原因，“赢得冠军并创造历史”是结果，前后构成因果关系，前句为原因，应填Because。 46．Keeping a reading diary is useful ________ it helps me understand the ideas better. A．because B．though C．until D．unless 【答案】A 【详解】句意：写阅读日记是有用的，因为它帮助我更好地理解观点。 because因为；though虽然；until直到；unless除非。根据“it helps me understand the ideas better”可知，后半句解释了写阅读日记有用的原因，用because引导原因状语从句。 47．Celina didn’t buy the dictionary yesterday ________ her aunt would give her one. A．until B．because C．if D．before 【答案】B 【详解】句意：Celina昨天没有买那本字典，因为她姑姑将给她一本。 until直到……为止；because因为；if如果；before在……之前。“her aunt would give her one”是“Celina didn’t buy the dictionary yesterday”的原因，because后接原因，引导原因状语从句。 48．Many young people return to their hometown ________ they want to stay with their families and build their hometown. A．so B．but C．because 【答案】C 【详解】句意：许多年轻人回到他们的家乡，因为他们想和家人待在一起并建设他们的家乡。 so所以；but但是；because因为。根据“they want to stay with their families and build their hometown”可知，后半句解释了年轻人回家乡的原因，前后句是因果关系。应填because。 49．Many people like shopping online at home ________ it’s very easy and saves much time. A．though B．because C．so D．after 【答案】B 【详解】句意：很多人喜欢在家网购，因为它非常便捷且节省时间。 though虽然；because因为；so所以；after在……之后。“it’s very easy and saves much time”是“like shopping online”的原因，应用because引导原因状语从句。应填because。 50．________ more than 80% of the villagers now have access to clean tap water, the local government is planning a new recycling system. A．Unless B．Though C．Since D．Until 【答案】C 【详解】句意：既然超过80%的村民现在能用上干净的自来水，当地政府正在计划一个新的回收系统。 Unless除非；Though虽然；Since既然，因为；Until直到。根据句意可知，前半句“村民用上自来水”是后半句“政府计划新系统”的原因或背景，前后句构成因果逻辑，Since符合语境。 二、完成句子(每小题2分，共20分) 51．既然都到了，让我们开始吧。 ________ everyone is here, let’s ________. 【答案】 Since begin/start 【详解】根据中英文对照可知，第一空缺少“既然”，since“既然”，引导原因状语从句，句首首字母大写；第二空缺少“开始”，let’s后面接动词原形，begin“开始”，或start“开始”。故填Since；begin/start。 52．他昨天没来上学，因为生病了。 He didn’t come to school yesterday ________ he ________ ill. 【答案】 because was 【详解】根据句意及空处可知，缺少“因为”和“是”的表达。because“因为”，连词，be“是”，主语是he，又根据“didn’t come to school yesterday”可知，be应用was。故填because；was。 53．如果每周举办一次这样的图书分享活动，那将有助于我们培养良好的阅读习惯。 ________ we hold such a book sharing event once a week, it ________ ________ ________ form a good reading habit. 【答案】 If will help us 【详解】原句中“如果”和“将有助于我们”是关键词。表示“如果”的英文是if，是连词，引导条件状语从句，句首首字母要大写；表示“将有助于我们”的英文是will help us，是一般将来时。 54．如果我们学好英语，就能更好地向外国游客介绍广交会。 We ________ ________ the Canton Fair to foreign visitors better ________ we ________ English well. 【答案】 can introduce if learn 【详解】原句中“能”、“介绍”、“如果”和“学”是关键词。①填情态动词can（能够，后接动词原形）；固定搭配introduce sth. to sb. 表示“向某人介绍某物”，因此②填introduce；③填连词if（引导条件状语从句，意为 “如果”）；if引导的条件状语中，主语谓语动词含有情态动词can，因此if从句要用一般现在时，从句主语we后用动词原形，④填learn（学习）。 55．如果明天下雨，运动会将被推迟。 ________ it ________ tomorrow, the sports meeting will be put off. 【答案】 If rains 【详解】原句中“如果”是关键词，表示“如果”的连词是if，“下雨”的单词是rain。本句遵循主将从现原则，从句用一般现在时，主语it为第三人称单数，动词用第三人称单数形式。故填If；rains。 56．读书破万卷，下笔如有神。 If you read ten thousand books, you ________ ________ very well. 【答案】 will write 【详解】原句中“下笔”是关键词，表示“下笔”的词是write，此句为if引导的真实条件句，结构为“if+一般现在时，主句用一般将来时”。故填will；write。 57．We can’t start the meeting unless our class teacher is here. (保持句意基本不变) We can’t start the meeting ________ our class teacher ________ here. 【答案】 if isn’t 【详解】句意：除非我们的班主任在这里，否则我们不能开始会议。原句中“unless”表示“除非”，相当于“if...not...”的结构。所以，要将原句保持句意基本不变，需将“unless”替换为“if...not...”，即第一个空填“if”，第二个空在“our class teacher”后加“isn’t”来表示否定。故填if；isn’t。 58．如果你不努力工作，你就不会成功。 You won’t ________ ________ ________ ________ work hard. 【答案】 succeed if you don’t 【详解】succeed“成功”，won’t后跟动词原形；if“如果”，引导条件状语从句，遵循“主将从现”原则；you“你”，作从句主语，谓语用don’t构成否定句，后跟实义动词原形。故填succeed；if；you；don’t。 59．既然都到了，让我们开始吧。 __________ __________ is here, let’s begin. 【答案】 Since everybody 【详解】since“既然”，引导原因状语从句，everybody“每个人”，作主语，故填Since；everybody。 60．既然没有人看到，我拒绝相信你。 ________ nobody saw it, I ________ ________ ________ you. 【答案】 Since refused to trust/believe 【详解】对比中英文，英语句中缺少“既然”和“拒绝相信”。第一空为since引导的原因状语从句，表示显然的、已知的理由，since“既然”，位于句首，首字母大写；refuse to do sth“拒绝做某事”，根据第一句中的“saw”，用一般过去时，动词用过去式refused；believe/trust“相信”。故填Since；refused；to；trust/believe。 学科网（北京）股份有限公司 $