Unit 1 Teenagers today 语法Grammar 条件状语从句和原因状语从句-2026-2027学年九年级英语上册单元语法词汇题型知识点练习（外研版）

**基本信息** 聚焦条件与原因状语从句，通过连接词分类、用法辨析及时态规则构建系统方法体系，强化语言理解与应用能力，培养分析比较的思维品质。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |条件状语从句|含if/unless/as long as等连接词辨析及3类时态规则（主将从现等）|连接词功能分类+时态应用规则，结合例句直观展示|从连接词含义（如unless=if...not）到时态原理，再到语境应用，形成概念-规则-实例链条| |原因状语从句|含because/as/since/for语气及用法差异辨析|连接词语气强弱分级（because最强，as最弱）+位置规则（for后置）|按语气逻辑排序，通过对比例句明确使用场景，构建"语气-功能-语境"对应关系|

学校:___________姓名：___________班级：___________考号：___________ Unit 1 Teenagers today 条件状语从句和原因状语从句 （时间：60分钟，满分：100分） 条件状语从句 if 如果 If you come to the party, you’ll have a great time! unless（if...not） 除非 You will be late again unless you hurry. as / so long as 只要 As/ So long as you study hard, you’ll get good grades. 【注意】 1. 条件状从的时态：①主将从现 ②主情从现 ③主祈从现 原因状语从句 because 因为 直接加未知的原因，语气最强，常用来回答 why 引起的提问 It was because he was late that he didn’t go with us. as 因为；由于 语气最弱，常放于主句前，较口语化，所表达的原因比较明显 As you are a child, you can’t drive a car. since 既然 语气较弱，常放于主句前，表示对方已知的事实 Since he can't answer this question, you’d better ask someone else. for 因为 表示推断的理由是对前面分句加以解释，只能后置 Amy went to bed early, for she didn’t feel well. 【注意】 若强调原因状语从句，只能用 because 引导 一、单项选择(本大题共40小题，每小题2分，共80分) 1．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。 2．________ 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。 3．________ you make up your mind to hold on, nothing can stop you from realizing your dream. A．Once B．Before C．Unless D．Until 【答案】A 【详解】句意：一旦你下定决心坚持下去，没有什么能阻挡你实现梦想。 考查连词辨析。once一旦；before在……之前；unless除非；until直到。表一经做出决定，选A。 4．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。 5．— A balanced diet and everyday exercise are the keys to good health. — You’re right. We cannot achieve our goals ________ we have a strong body. A．if B．until C．unless D．after 【答案】C 【详解】句意：——均衡的饮食和日常锻炼是健康的关键。——你说得对。除非我们有一个强壮的身体，否则我们无法实现我们的目标。 if如果；until直到；unless除非；after在……之后。根据“We cannot achieve our goals ... we have a strong body.”可知，此处强调身体健康是实现目标的前提条件，unless引导条件状语从句，意为“除非”，符合语境。 6．—Could you tell me how to improve my English writing? —________ you keep writing diaries in English, you’ll make progress little by little. A．As long as B．Even though C．As if D．So that 【答案】A 【详解】句意：——你能告诉我如何提高英语写作吗？——只要你坚持用英语写日记，你就会一点一点进步。 分析句子结构可知，空格处引导条件状语从句。根据语境可知，前后句是条件关系，表示“只要”坚持写日记，就会进步。As long as引导条件状语从句，符合语境。故选A。 7．It’s 8 o’clock now! ________ you have the proper excuse, your teacher must be angry with you. A．After B．Unless C．Because D．If 【答案】B 【详解】句意：现在8点了！除非你有合理的理由，否则老师一定会生你的气。 After在……之后；Unless除非；Because因为；If如果。根据“It’s 8 o’clock now!”可知，说话时对方已经迟到，“除非”有正当理由老师才不会生气，B选项符合逻辑，引导条件状语从句，其余选项语义不符。 8．—Excuse me. What’s your favorite saying? —Nothing is impossible in the world ________ you put your heart into it. A．but B．if C．before D．unless 【答案】B 【详解】句意：——请问。你最喜欢的格言是什么？——只要你用心去做，世上没有不可能的事情。 but但是；if如果；before在……之前；unless除非。根据“Nothing is impossible in the world... you put your heart into it.”，后半句是前半句成立的条件，表示“如果”你用心去做，就没有不可能的事，应填if。 9．You will lose many good chances ________ you learn to communicate with others politely. A．unless B．since C．if 【答案】A 【详解】句意：除非你学会礼貌与人沟通，否则你会错失很多好机会。考查反面条件连词辨析。unless除非；since自从、因为；if如果。前后反向条件逻辑，符合unless固定考法。故选A。 10．You can’t know the real meaning of the story ________ you read it by heart and think it over. A．if B．until C．unless 【答案】C 【详解】句意：除非你用心背诵、认真思考，否则你不会读懂这个故事的真正含义。 if如果；until直到；unless除非。前后为反向假设关系，符合unless语义用法。 11．You can complete the task successfully ________ you follow the steps. A．as much as B．as well as C．as long as 【答案】C 【详解】句意：只要你按照步骤来，你就能成功完成这个任务。 考查连词短语辨析。as much as 和……一样多；as well as 和……一样好，也；as long as 只要。根据句意，前后是条件关系，表示“只要按照步骤，就能成功完成任务”，应选用表示条件的连词短语 as long as。故选C。 12．My grandpa goes to the park to exercise every morning ________ it is raining heavily. A．since B．because C．unless D．until 【答案】C 【详解】句意：我爷爷每天早上都去公园锻炼，除非下大雨。 since自从/因为；because因为；unless除非；until直到。根据“My grandpa goes to the park to exercise every morning”可知是习惯性动作，结合“it is raining heavily”可知下大雨是不去锻炼的例外条件，unless引导条件状语从句表示“除非”，符合逻辑。故选C。 13．You will certainly make a big difference ________ you keep working hard. A．if B．until C．unless D．although 【答案】A 【详解】句意：只要你坚持努力，就一定会产生重大影响。 if如果；until直到，unless除非，although虽然。空格前后为条件关系，if 意为“如果”，引导条件状语从句，符合语境。 14．—Please call me ________ you need help. I’m always here with you. —Thank you so much. A．unless B．when C．though D．until 【答案】B 【详解】句意：——当你需要帮助时请给我打电话。我一直都在你身边。——非常感谢。 unless除非；when当……时候；though虽然；until直到。根据后句“I’m always here with you.”可知，说话人表示随时提供支持，因此语境为“当”你需要帮助的时候打电话。 15．— Would you like to join our green travel group to visit Xitang Ancient Town tomorrow? — Sure, ________ I am busy. A．since B．unless C．when D．until 【答案】B 【详解】句意：——你想明天加入我们的绿色旅行团去参观西塘古镇吗？——当然，除非我很忙。 since自从/因为；unless除非；when当……时候；until直到。根据答语“Sure”可知说话人愿意参加，后半句“I am busy”是不能参加的条件，unless意为“除非”，引导条件状语从句，符合语境。 16．________ you keep diaries in English as a habit, your writing skills will be developed. A．As long as B．Even though C．In order that 【答案】A 【详解】句意：只要你把写英文日记当成一种习惯，你的写作技能就会得到提高。 As long as只要；Even though即使/虽然；In order that为了。根据句意，前句是后句的条件，表示“只要……就……”，应填“As long as”。 17．—When is the school sports meeting? —It will be held on time if it ________ next Friday. A．isn’t rain B．won’t rain C．doesn’t rain D．hasn’t rain 【答案】C 【详解】句意：——学校运动会什么时候举行？——如果下周五不下雨，它将按时举行。 isn’t rain语法错误，be动词后不能直接接动词原形；won’t rain一般将来时，时态错误；doesn’t rain一般现在时；hasn’t rain语法错误，hasn’t后应接过去分词。当if表示“如果”引导真实条件句时，主句用将来时，从句用一般现在时。应填doesn’t rain。 18．You won’t understand the meaning of the poem _________ you read it again. A．unless B．if C．though D．before 【答案】A 【详解】句意：除非你再读一遍，否则你不会理解这首诗的意思。 unless除非；if如果；though虽然；before在……之前。根据“You won’t understand...you read it again”的逻辑，此处表示“除非”的条件关系，应填unless。 19．Simon likes Nanchang very much ________ it is full of life. A．or B．because C．if D．though 【答案】B 【详解】句意：西蒙非常喜欢南昌，因为它充满生机。 or或者；because因为；if如果；though虽然。根据“Simon likes Nanchang very much”与“it is full of life”可知，前后句是因果关系，后句解释喜欢的原因。应填because。 20．Don’t be afraid of changing ________ it will lead you to a new beginning. A．when B．unless C．before D．because 【答案】D 【详解】句意：不要害怕改变，因为它会带你走向新的开始。 when当……时；unless除非；before在……之前；because因为。根据“Don’t be afraid of changing”（不要害怕改变）和“it will lead you to a new beginning”（它会带你走向新的开始）可知，后者是前者的原因，应用because引导原因状语从句。 21．Learning first-aid skills is important ________ accidents may happen at any time. A．but B．until C．because 【答案】C 【详解】句意：学习急救技能很重要，因为事故可能随时发生。 but但是；until直到……为止；because因为。根据句意可知，前后句之间存在因果关系，后半句是前半句的原因，因此用because引导原因状语从句。 22．Tom practises speaking English every day ________ he wants to improve it. A．if B．because C．but D．unless 【答案】B 【详解】句意：汤姆每天练习说英语，因为他想要提高它。 if如果；because因为；but但是；unless除非。根据语境可知，后半句“他想要提高它”是前半句“每天练习说英语”的原因，前后句构成因果关系。 23．—It is said that local crabs are famous and delicious. —_________ we are here, why not try some? A．Unless B．Since C．Although D．Whenever 【答案】B 【详解】句意：——据说当地的螃蟹很有名且美味。——既然我们在这里，为什么不尝尝呢？ Unless除非；Since既然；由于；Although虽然；Whenever无论何时。根据“why not try some?”可知是提出建议，结合“we are here”可知表示“既然我们在这儿”，表示原因或理由，符合语境。应填Since。 24．________ nicknames are seen as a form of showing no respect for others, next time you want to call someone by his nickname at school, weigh it before you do. A．Unless B．Since C．Until D．Although 【答案】B 【详解】句意：既然绰号被视为对他人不尊重的一种形式，下次你在学校想称呼别人绰号时，先权衡一下再做。 Unless除非，引导条件状语从句；Since既然、因为，引导原因状语从句；Until直到，引导时间状语从句；Although虽然，引导让步状语从句。根据句意，前后是因果关系，“既然”绰号被视为不尊重，所以要谨慎，因此应选Since。 25．I don’t know anything about our vacation ________ Dave wants it to be a surprise. A．but B．while C．because D．though 【答案】C 【详解】句意：我不知道任何关于我们假期的事情，因为Dave想让它成为一个惊喜。 考查连词辨析。but但是；while当……时；because因为；though虽然。根据句意，后半句“Dave wants it to be a surprise”是前半句“我不知道”的原因，需用表示原因的连词because。故选C。 26．Steven thinks this can’t be true ________ he has never been to Shanghai. A．but B．so C．or D．because 【答案】D 【详解】句意：Steven认为这不可能是真的因为他从未去过上海。 考查连词。but但是；so所以；or或者；because因为。分析句子可知，前后两句构成因果关系，前句是结果，后句是原因，需用because引导原因状语从句。故选D。 27．He didn’t go to the party ______ he was ill, not ______ he didn’t want to go. A．because; because B．if; because C．because; if D．if; if 【答案】A 【详解】句意：他没有去聚会是因为他病了，而不是因为他不想去。 考查连词辨析。because因为；if如果、是否。根据“He didn’t go to the party...he was ill, not...he didn’t want to go.”可知，没去聚会是“因为”生病了，不是“因为”不想去，此处二个空都表示“原因”，用because引导原因状语从句。故选A。 28．Emma exercises a lot every afternoon, ________ she will have a P.E. test next month. A．or B．for C．but D．so 【答案】B 【详解】句意：艾玛每天下午都做很多运动，因为她下个月有个体育测试。 考查连词辨析。or或者，表选择；for因为，表原因；but但是，表转折；so所以，表结果。根据句意可知，艾玛每天下午都做很多运动是因为她下个月有个体育测试，所以此处应该用for表示原因。故选B。 29．Zhang Guimei is Daming’s hero, ________ she’s a great teacher and helped many students to go to college. A．but B．or C．because D．if 【答案】C 【详解】句意：张桂梅是大明的英雄，因为她是一位伟大的老师并且帮助许多学生上大学。 考查连词辨析。but但是；or或者；because因为；if如果。前后句为因果关系，因为张桂梅是一位伟大的老师并且帮助许多学生上大学，所以是大明的英雄。用because引导原因状语从句。故选C。 30．—Can you help me with the housework _________ you are free today, Frank? —No problem, mum. I’ll come on later. A．since B．until C．or D．but 【答案】A 【详解】句意：——弗兰克，既然你今天有空，能帮我做家务吗？——没问题，妈妈。我一会儿就来。 考查连词辨析。since既然；until直到；or或者；but但是。根据“Can you help me with the housework...you are free today, Frank?”可知，此处需填入表示原因的连词，说明“有空”是“请求帮忙做家务”的原因，用since引导原因状语从句。故选A。 31．—________ we’ve made the promise (承诺), let’s keep it and not give up easily. —Of course! A．Though B．Until C．Since 【答案】C 【详解】句意：——既然我们做出了承诺，就让我们坚持下去，不要轻易放弃。——当然！ 考查从属连词辨析。Though虽然；Until直到；Since既然。根据“...we’ve made the promise, let’s keep it and not give up easily”可知，此处表达的是因果关系，应用since连接，引导原因状语从句，表示“既然”。故选C。 32．Mark plans to study in Paris next year _________ he is interested in French culture. A．or B．because C．but D．so 【答案】B 【详解】句意：马克计划明年去巴黎学习因为他对法国文化感兴趣。 考查连词辨析。or或者，表选择；because因为，表原因；but但是，表转折；so所以，表结果。根据“Mark plans to study in Paris next year…he is interested in French culture.”可知，对法国文化感兴趣是计划去巴黎学习的原因，because符合语境。故选B。 33．_______ Li Fei studies hardest, _______ she always gets the highest mark in the exam. A．Because, so B．Because, / C．/, but 【答案】B 【详解】句意：李飞学习最努力，所以她在考试中总是取得最高分。 考查连词用法。Because因为；so所以；but但是。根据“Li Fei studies hardest…she always gets the highest mark in the exam.”可知，学习努力和取得高分之间是因果关系，because和so在英语中不能同时用于一个句子来表达因果关系。故选B。 34．—We should put on thick coats ____________ the temperature drops, or we might catch a cold. —Good advice! Being prepared is always better than getting sick. A．since B．though C．unless D．until 【答案】A 【详解】句意：——因为气温下降，我们应该穿上厚外套，否则可能会感冒。——好建议！做好准备总比生病强。 考查连词辨析。since因为；though虽然；unless除非；until直到。根据“We should put on thick coats ... the temperature drops”可知，后句是前句的原因，用since引导原因状语从句。故选A。 35．_______ it was raining heavily, we decided to stay at home and watch a movie. A．Since B．Although C．Until D．If 【答案】A 【详解】句意：由于雨下得很大，我们决定待在家里看电影。    考查连词辨析。Since因为；Although虽然；Until直到；If如果。根据“it was raining heavily, we decided to stay at home”可知，前后是因果关系，表示“因为下雨所以决定待在家”，故选A。 36．—I didn’t see Lily at the party last night. —Well, she didn’t go there ________ she was feeling sick. A．and B．until C．though D．because 【答案】D 【详解】句意：——昨晚聚会上我没看见莉莉。——好吧，她没有去那里，因为她觉得不舒服。 考查连词辨析。and和；until直到；though虽然；because因为。“她觉得不舒服”是“她没有去那里”的原因，用because引导原因状语从句。故选D。 37．He didn’t sleep well ________ he worried about his study. A．because of B．because C．for D．with 【答案】B 【详解】句意：他睡不好，因为他担心自己的学业。 because of后接名词、代词或动名词；because连词，后接完整句子，表直接原因；for作连词表原因时一般不放在句中；with是介词，不能引导句子。空格后是完整从句，用because引导从句，故选because。 38．She failed the exam __________ she didn’t study hard. A．because of B．because C．for D．with 【答案】B 【详解】句意：她考试不及格，因为她没有努力学习。 because of因为（后接名词/代词/名词短语）；because因为（后接从句）；for因为（不强调直接原因）；with和。“she didn’t study hard”为完整从句，是不及格的直接原因，应用because引导原因状语从句。for引导的从句只能放主句后面，前面必须加逗号，且不表直接因果，只是补充说明、推测理由，故排除。 39．—What shall we do to kill time this afternoon? —Well, ________ it’s Star Cinema’s half-price day today, why not go to watch a film? A．since B．though C．unless D．until 【答案】A 【详解】句意：——我们今天下午做什么来消磨时间呢？ ——好吧，既然今天是星空影院的半价日，为什么不去看电影呢？ since既然，因为；though虽然，尽管；unless除非；until直到……为止。分析句子结构可知，“it’s Star Cinema’s half-price day today”是“why not go to watch a film”的原因，应使用since引导原因状语从句。 40．________ many railway workers have to work at night ________ there are always tasks to complete on the railways. A．Because; so​ B．Because; /​ C．So; because​ D．/; because​ 【答案】D 【详解】句意：许多铁路工人不得不在夜间工作，因为铁路上总是有任务要完成。 because（因为）和so（所以）不能同时出现在一个句子中，故排除A和C。前半句是结果，后半句是原因，应使用because引导原因状语从句，前面不需要连接词。故选/; because。 二、完成句子(本大题共10小题，每小题2分，共20分) 41．既然天气很糟糕，为何不推迟运动会? ________ ________ the weather is bad, why not put off the sports meet? 【答案】 Now that 【详解】既然：now that，从属连词。故填Now；that。 42．Tom didn’t go to school yesterday because he caught a bad cold. (改为同义句) Tom didn’t go to school ________ ________ his bad cold. 【答案】 because of 【详解】句意：Tom昨天没有去上学因为他得了重感冒。原句是because引导的原因状语从句，可以换成because of加名词短语，故填because；of。 43．我想去看卧龙自然保护区里的大熊猫，因为在那儿人们可以离它们更近。 I wanted to see the pandas in the Wolong Panda Reserve, ______________________________. 【答案】because it allows people to get closer to them 【详解】根据中文提示及所给英文可知，此处考查because“因为”引导的原因状语从句，从句中含动词短语allow sb. to do sth.“允许某人做某事”以及get closer to sb.“离某人更近”，本句主语为代词it，指代前句中的“自然保护区”，且此处表示的是事实，用一般现在时，谓语动词用三单形式。故填because it allows people to get closer to them。 44．我晚饭不喜欢汉堡包因为它们不健康。 I don’t like hamburgers for dinner ________ they’re not ________. 【答案】 because healthy 【详解】“因为”because，引导原因状语从句；“健康的”healthy，形容词作表语。故填because；healthy。 45．只要我们奋力坚持，将会更好更快地完成这项工作。 __________ we fight on,the work will be done better and more quickly. 【答案】 As long as 【详解】原句中“只要”是关键词，表示“只要”的短语是As long as。本句遵循主将从现规则，主句为一般将来时，从句用一般现在时。 46．You will be late for school if you don’t leave at once. (同义句转换) ________ you leave at once, you will be late for school. 【答案】Unless 【详解】原句中“如果你不……”是关键词，对应的同义连词是unless（意为“除非”），可直接替换“if...don’t”引导条件状语从句。故填Unless。 47．他现在相信，除非他努力学习，否则他的梦想不会实现。 Now he believes that ________ ________ ________ ________, his dream won’t come true. 【答案】 unless he studies hard 【详解】根据中英文对照，此处缺少“除非他努力学习”。unless“除非”，用法“unless+主语+动词”，时态用一般现在时表将来。he“他”，study hard表示“努力学习”，he为第三人称单数，study变为三单形式，study的三单形式为“studies”。故此处填unless；he；studies；hard。 48．Respect the rules, and traffic can flow safely and smoothly. (保持句意基本不变) ________ ________ respect the rules, traffic can flow safely and smoothly. 【答案】 If we 【详解】句意：遵守规则，交通就能安全、顺畅地通行。原句是“祈使句+and+陈述句”的结构，表示条件和结果的关系，可以转换为if引导的条件状语从句，将祈使句“Respect the rules”改为陈述形式“we respect the rules”，前面加if构成条件状语从句，if位于句首，首字母要大写。故填If；we。 49．I sleep with the window open if it isn’t really cold. (保持句意不变) I sleep with the window open ________ it ________ really cold. 【答案】 unless is 【详解】句意：如果天气不是很冷，我就开着窗户睡觉。原句中“if it isn’t really cold”表示“如果天气不是很冷”，是一个条件状语从句，要改写为意思相同的句子，可以使用“unless”来替换“if...not...”的结构，“unless”表示“除非”，即“除非天气真的很冷，否则我就开着窗户睡觉”。因此，第一个空填“unless”，第二个空保持原句的谓语动词“is”不变。故填unless；is。 50．如果你在措辞上不小心，发短信可能会让事情变得更糟。 Texting can make things worse if you ________ ________ ________ your words. 【答案】 aren’t careful with 【详解】根据“Texting can make things worse if you…your words.”及汉语提示可知，句子为一般现在时，if引导的条件状语从句应表达否定意义，be careful with“小心”，形容词短语，并且主语“you”为第二人称，be动词应用are，其否定形式为aren’t。故填aren’t；careful；with。 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $ 学校:___________姓名：___________班级：___________考号：___________ Unit 1 Teenagers today 条件状语从句和原因状语从句 （时间：60分钟，满分：100分） 条件状语从句 if 如果 If you come to the party, you’ll have a great time! unless（if...not） 除非 You will be late again unless you hurry. as / so long as 只要 As/ So long as you study hard, you’ll get good grades. 【注意】 1. 条件状从的时态：①主将从现 ②主情从现 ③主祈从现 原因状语从句 because 因为 直接加未知的原因，语气最强，常用来回答 why 引起的提问 It was because he was late that he didn’t go with us. as 因为；由于 语气最弱，常放于主句前，较口语化，所表达的原因比较明显 As you are a child, you can’t drive a car. since 既然 语气较弱，常放于主句前，表示对方已知的事实 Since he can't answer this question, you’d better ask someone else. for 因为 表示推断的理由是对前面分句加以解释，只能后置 Amy went to bed early, for she didn’t feel well. 【注意】 若强调原因状语从句，只能用 because 引导 一、单项选择(本大题共40小题，每小题2分，共80分) 1．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 2．________ it is fine tomorrow, we’ll have a picnic. A．When B．Even though C．If D．Because 3．________ you make up your mind to hold on, nothing can stop you from realizing your dream. A．Once B．Before C．Unless D．Until 4．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 5．— A balanced diet and everyday exercise are the keys to good health. — You’re right. We cannot achieve our goals ________ we have a strong body. A．if B．until C．unless D．after 6．—Could you tell me how to improve my English writing? —________ you keep writing diaries in English, you’ll make progress little by little. A．As long as B．Even though C．As if D．So that 7．It’s 8 o’clock now! ________ you have the proper excuse, your teacher must be angry with you. A．After B．Unless C．Because D．If 8．—Excuse me. What’s your favorite saying? —Nothing is impossible in the world ________ you put your heart into it. A．but B．if C．before D．unless 9．You will lose many good chances ________ you learn to communicate with others politely. A．unless B．since C．if 10．You can’t know the real meaning of the story ________ you read it by heart and think it over. A．if B．until C．unless 11．You can complete the task successfully ________ you follow the steps. A．as much as B．as well as C．as long as 12．My grandpa goes to the park to exercise every morning ________ it is raining heavily. A．since B．because C．unless D．until 13．You will certainly make a big difference ________ you keep working hard. A．if B．until C．unless D．although 14．—Please call me ________ you need help. I’m always here with you. —Thank you so much. A．unless B．when C．though D．until 15．— Would you like to join our green travel group to visit Xitang Ancient Town tomorrow? — Sure, ________ I am busy. A．since B．unless C．when D．until 16．________ you keep diaries in English as a habit, your writing skills will be developed. A．As long as B．Even though C．In order that 17．—When is the school sports meeting? —It will be held on time if it ________ next Friday. A．isn’t rain B．won’t rain C．doesn’t rain D．hasn’t rain 18．You won’t understand the meaning of the poem _________ you read it again. A．unless B．if C．though D．before 19．Simon likes Nanchang very much ________ it is full of life. A．or B．because C．if D．though 20．Don’t be afraid of changing ________ it will lead you to a new beginning. A．when B．unless C．before D．because 21．Learning first-aid skills is important ________ accidents may happen at any time. A．but B．until C．because 22．Tom practises speaking English every day ________ he wants to improve it. A．if B．because C．but D．unless 23．—It is said that local crabs are famous and delicious. —_________ we are here, why not try some? A．Unless B．Since C．Although D．Whenever 24．________ nicknames are seen as a form of showing no respect for others, next time you want to call someone by his nickname at school, weigh it before you do. A．Unless B．Since C．Until D．Although 25．I don’t know anything about our vacation ________ Dave wants it to be a surprise. A．but B．while C．because D．though 26．Steven thinks this can’t be true ________ he has never been to Shanghai. A．but B．so C．or D．because 27．He didn’t go to the party ______ he was ill, not ______ he didn’t want to go. A．because; because B．if; because C．because; if D．if; if 28．Emma exercises a lot every afternoon, ________ she will have a P.E. test next month. A．or B．for C．but D．so 29．Zhang Guimei is Daming’s hero, ________ she’s a great teacher and helped many students to go to college. A．but B．or C．because D．if 30．—Can you help me with the housework _________ you are free today, Frank? —No problem, mum. I’ll come on later. A．since B．until C．or D．but 31．—________ we’ve made the promise (承诺), let’s keep it and not give up easily. —Of course! A．Though B．Until C．Since 32．Mark plans to study in Paris next year _________ he is interested in French culture. A．or B．because C．but D．so 33．_______ Li Fei studies hardest, _______ she always gets the highest mark in the exam. A．Because, so B．Because, / C．/, but 34．—We should put on thick coats ____________ the temperature drops, or we might catch a cold. —Good advice! Being prepared is always better than getting sick. A．since B．though C．unless D．until 35．_______ it was raining heavily, we decided to stay at home and watch a movie. A．Since B．Although C．Until D．If 36．—I didn’t see Lily at the party last night. —Well, she didn’t go there ________ she was feeling sick. A．and B．until C．though D．because 37．He didn’t sleep well ________ he worried about his study. A．because of B．because C．for D．with 38．She failed the exam __________ she didn’t study hard. A．because of B．because C．for D．with 39．—What shall we do to kill time this afternoon? —Well, ________ it’s Star Cinema’s half-price day today, why not go to watch a film? A．since B．though C．unless D．until 40．________ many railway workers have to work at night ________ there are always tasks to complete on the railways. A．Because; so​ B．Because; /​ C．So; because​ D．/; because​ 二、完成句子(本大题共10小题，每小题2分，共20分) 41．既然天气很糟糕，为何不推迟运动会? ________ ________ the weather is bad, why not put off the sports meet? 42．Tom didn’t go to school yesterday because he caught a bad cold. (改为同义句) Tom didn’t go to school ________ ________ his bad cold. 43．我想去看卧龙自然保护区里的大熊猫，因为在那儿人们可以离它们更近。 I wanted to see the pandas in the Wolong Panda Reserve, ______________________________. 44．我晚饭不喜欢汉堡包因为它们不健康。 I don’t like hamburgers for dinner ________ they’re not ________. 45．只要我们奋力坚持，将会更好更快地完成这项工作。 __________ we fight on,the work will be done better and more quickly. 46．You will be late for school if you don’t leave at once. (同义句转换) ________ you leave at once, you will be late for school. 47．他现在相信，除非他努力学习，否则他的梦想不会实现。 Now he believes that ________ ________ ________ ________, his dream won’t come true. 48．Respect the rules, and traffic can flow safely and smoothly. (保持句意基本不变) ________ ________ respect the rules, traffic can flow safely and smoothly. 49．I sleep with the window open if it isn’t really cold. (保持句意不变) I sleep with the window open ________ it ________ really cold. 50．如果你在措辞上不小心，发短信可能会让事情变得更糟。 Texting can make things worse if you ________ ________ ________ your words. 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $