Unit5 Art world 重点语法：原因状语从句进阶讲练100题-2024-2025学年九年级英语上册重难点讲练全攻略（牛津译林版）

2024-2025学年一线教师制作精品新课系列资料，已编校！ 2024-2025学年一线教师制作精品新课系列资料，已编校！ Unit5 Art world 重点语法：原因状语从句进阶讲练100题 语法知识精讲 原因状语从句 1．引导原因状语从句的连词主要有：because, as, since等。并列连词for也可表示原因。每个连词的含义不尽相同。 连词 位置 内涵 语气 回答why 被强调 because(因为) 主句前或后 直接因果关系 强 能 能 as (由于) 主句前或后 双方都知道的原因 弱 不能 不能 since/now that(既然) 通常位于主句前 for(因为) 位于句后 用于补充说明的原因 弱 不能 不能 He was criticized by the teacher, because he was late for class. 因为他迟到了，老师批评了他。 I can't go with you, as I have a lot of work to do. 我不能和你一起去，因为我有很多工作要做。 Since everyone is here, we can begin our discussion. 既然大家都在这儿，我们可以开始讨论了。 2．when(既然)，也可以引导原因状语从句。 It was foolish of you to take a taxi when you could walk there in five minutes. 既然步行5分钟就能到那里，你却去乘出租汽车，真够愚蠢的。 3.其他词引导的原因状语从句 seeing that (鉴于，由于)，considering that (考虑到)， in that(因为)， now that既然， given that考虑到， for the reason that因为， Now that you are a high school student, you are responsible for what you do. 既然是高中生了，你就要为你的行为负责。 Seeing (that) he refused to help us, there’s no reason that we should now help him. 他既然曾经拒绝帮助我们，我们现在没有理由来帮助他。 Given that she is interested in children, I am sure teaching is the right career for her. 考虑到她喜欢孩子，我可以肯定教书是最适合她的职业。 语法知识精练 1．My mother was very happy yesterday ________ I cooked the delicious meal on my own. A．because B．although C．but D．or 【答案】A 【详解】句意：昨天我妈妈很高兴，因为我独自做了美味的饭菜。 考查原因状语从句。because因为；although尽管；but但是；or或者。根据空前的“My mother was very happy yesterday”和空后的“I cooked the delicious meal on my own.”意思可知，两句之间是因果关系，空后这句是在解释妈妈为什么非常高兴，因此空处填because（因为），引导原因状语从句。故选A。 2．I didn’t go to watch the movie with him ________ I saw it last week. A．until B．so C．if D．because 【答案】D 【详解】句意：我没有和他一起去看电影因为我上周已经看过了。 考查连词词义辨析。until直到……为止；so因此，所以；if如果；because因为。根据“I didn’t go to watch the movie with him”与“I saw it last week”可知，在这个句子中, 前后两句之间存在明确的因果关系。故选D。 3．Little Tim joined the Helpers’ Club two weeks ago __________ he is an animal lover. A．if B．until C．because D．unless 【答案】C 【详解】句意：小吉姆两周前加入了动物助手俱乐部，因为他是一个动物爱好者。 考查连词辨析。if如果；until直到……为止；because因为；unless除非。根据“joined the Helpers’ Club”以及“he is an animal lover”可知，空格后是空格前加入俱乐部的原因。 故选C。 4．The red suitcase is expensive ________ it’s made of leather (皮). A．because B．though C．when D．if 【答案】A 【详解】句意：这个红色手提箱很贵，因为它是皮制的。 考查连词辨析。because因为；though尽管；when当……时候；if如果。“它是皮制的”是很贵的原因，用because引导原因状语从句，故选A。 5．My friend Mike finished the work the best of us _______ he was the most experienced. A．because B．and C．but D．unless 【答案】A 【详解】句意：我的朋友迈克是我们中完成工作最好的，因为他最有经验。 考查连词辨析。because因为；and和；but但是；unless除非。因为迈克最有经验，所以工作完成最好，后文表原因，故用because连接。故选A。 6．________ you have grown up, you should learn to look after yourselves. A．Since B．Until C．Although D．Unless 【答案】A 【详解】句意：既然你已经长大了，你就应该学会照顾自己。 考查连词辨析。Since既然；Until直到；Although尽管；Unless除非。根据“you should learn to look after yourselves”和“you should learn to look after yourselves”可知二者为因果关系，故选A。 7．Our family would like to buy electric cars ________ they produce less air pollution. A．because B．so C．but D．and 【答案】A 【详解】句意：我们家想买电动汽车，因为它们产生的空气污染少。 考查连词辨析。because因为；so所以；but但是；and和。根据“Our family would like to buy electric cars…they produce less air pollution.”可知，后句是前句的原因，因此此处用“because”来连接。故选A。 8．It’s hard for us to say goodbye ________ we have so many happy days to remember. A．so B．because C．although D．until 【答案】B 【详解】句意：对于我们来说，说再见是困难的，因为我们有那么多快乐的日子要记住。 考查连词辨析。so所以；because因为；although尽管；until直到。根据“we have so many happy days to remember”可知是难说再见的原因，此处应用because引导原因状语从句，故选B。 9．Mr. Black was late for work ________ his car didn’t work on the way, not ________ the bad weather. A．because, because of B．because of, because C．because, because D．because of, because of 【答案】A 【详解】句意：布莱克先生上班迟到了因为他的车在路上坏了，不是因为天气不好。 考查连词和介词短语的用法。because用于引导原因状语从句；because of后需接名词或名词短语。空一处“his car didn’t work on the way,”是句子，用because；空二处后是名词短语“the bad weather”，用because of。故选A。 10．I didn’t go to school yesterday ________ I had a terrible toothache. A．because B．but C．so D．or 【答案】A 【详解】句意：昨天我没有去上学，因为我牙痛得很厉害。 考查连词辨析。because因为；but但是；so因此；or或者。根据“I didn’t go to school yesterday ... I had a terrible toothache.”可知，没去上学是因为牙疼得厉害，用because表示原因。故选A。 11．I always get up early on weekdays ________ I’m afraid I will be late for school. A．though B．because of C．so D．because 【答案】D 【详解】句意：我在工作日总是起床很早，因为我害怕我会上学迟到。 考查连词辨析。though 尽管；because of 因为，of为介词，后面跟名词、代词、动名词；so 所以；because 因为。我怕上学迟到是我起床早的原因，且空后为一个句子，应用because。故选D。 12．Everyone wants to make friends with Andy, ________ he is very friendly. A．but B．because C．so D．or 【答案】B 【详解】句意：每个人都想和安迪交朋友，因为他非常友好。 考查连词辨析。but但是；because因为；so所以；or或者。句子想表达的意思是“每个人想和安迪交朋友的原因是他非常友好”，because为连词，用来表示原因，在句中引导原因状语从句。故选B。 13．He didn’t go to school ________ he was ill. A．so B．because C．or D．so that 【答案】B 【详解】句意：他没去上学，因为他病了。 考查连词辨析。so因此；because因为；or或者；so that以便。根据语境可知，空格后在陈述原因，故应用because引导原因状语从句。故选B。 14．We would like to buy electric cars ________ they produce less air pollution. A．because B．so C．though D．but 【答案】A 【详解】句意：我们想买电动汽车，因为它们产生的空气污染更少。 考查连词辨析。because因为；so因此；though尽管；but但是。上文“想买电动汽车”和下文“电动汽车产生较少空气污染”之间是因果关系，前者是结果，后者表原因，故用because连接。故选A。 15．Mr Zhou was really anxious ________ he couldn’t find his car. A．while B．because C．because of D．until 【答案】B 【详解】句意：周先生真的很着急，因为他找不到他的车。 考查连词辨析。while当……时；because因为；because of因为，后接名词或名词性短语；until直到。空格后“找不到车”是他着急的原因，用because引导原因状语从句，故选B。 16．I think Leonardo da Vinci was a great inventor ________ he was a pioneer in many areas. A．because B．or C．if D．but 【答案】A 【详解】句意：我认为列奥纳多·达·芬奇是一位伟大的发明家，因为他在许多领域都是先驱。 考查连词辨析。because因为；or或；if如果；but但是。根据“he was a pioneer in many areas”可知后文解释的是原因。故选A。 17．Sally likes pandas __________ she thinks they are lovely. A．so B．but C．because D．though 【答案】C 【详解】句意：萨利喜欢熊猫，因为她认为它们很可爱。 考查连词辨析。so所以；but但是；because因为；though尽管。根据“Sally likes pandas”和“they are lovely”可知，此处表示原因。故选C。 18．We need to take care of the earth ________ it’s the only planet we have for humans to live on. A．though B．if C．because D．until 【答案】C 【详解】句意：我们需要照顾好地球，因为它是我们唯一可以供人类生活的星球。 考查从属连词辨析。though尽管；if如果；because因为；until直到。前后句表示因果关系，所以用because引导原因状语从句，故选C。 19．Little Tim have been in the Helpers’ Club for two years ________ he is an animal lover. A．if B．because C．until D．unless 【答案】B 【详解】句意：小蒂姆在救助俱乐部已经两年了，因为他是一个动物爱好者。 考查连词词义辨析。if如果；because因为；until直到；unless除非。根据空前后句的句意可知，此处表示因果关系。故选B。 20．John feels excited ________ he is going to have a tennis match with an excellent player this weekend. A．because B．but C．or D．so 【答案】A 【详解】句意：约翰很兴奋，因为这个周末他要和一位优秀的网球选手进行一场网球比赛。 考查连词辨析。because因为；but但是；or或者；so所以。分析“John feels excited...he is going to have a tennis match with an excellent player this weekend.”可知，前后句是因果关系，前果后因，应用because引导原因状语从句。故选A。 21．The idea of “Made in China” caught the world’s attention in the 2023 Asian Games ________ it played a big role in the event. A．if B．unless C．because D．although 【答案】C 【详解】句意：“中国制造”的理念在2023年亚运会上引起了全世界的关注，因为它在这项赛事中发挥了重要作用。 考查连词辨析。if如果；unless除非，如果不；because因为；although尽管。本句前后表述内容“The idea of ‘Made in China’ caught the world’s attention”和“it played a big role in the event”构成因果关系，设空处后为原因，所以选填because。故选C。 22．He has got everything ready ________ he may want to go hiking. A．as B．when C．if D．with 【答案】A 【详解】句意：他把一切都准备好了，因为他可能想去远足。 考查词义辨析。as因为；when当……时候；if如果；with和，介词。根据空前后句的句意可知，此处表示原因。故选A。 23．In Beijing, some 24-hour libraries are very popular with people ________ they are open all the time and in good places with big spaces and other good things. A．even if B．unless C．as D．or 【答案】C 【详解】句意：在北京，一些24小时开放的图书馆很受人们的欢迎，因为它们一直开放，而且处在有大空间和其他好东西的好地方。 考查连词辨析。even if即使，尽管；unless除非；as因为；or或者。根据“In Beijing, some 24-hour libraries are very popular with people...they are open all the time and in good places with big spaces and other good things.”可知，空格前后句为因果关系，前果后因，故此处应用as引导原因状语从句。故选C。 24．David had to stay in the hospital ________ he hurt his head. A．or B．so C．but D．because 【答案】D 【详解】句意：大卫不得不待在医院里，因为他伤了头。 考查连词辨析。or或者；so因此；but但是；because因为。分析题干可知，后句是前句的原因，结合选项可知，应用because引导此原因状语从句。故选D。 25．Don’t be afraid of changing, ________ it’s leading you to a new beginning. A．if B．because C．though D．unless 【答案】B 【详解】句意：不要害怕改变，因为它会带你走向一个新的开始。 考查连词辨析。if如果；because因为；though尽管；unless除非。根据“it’s leading you to a new beginning”可知后句是“不要害怕改变”的原因，应用because引导原因状语从句。故选B。 26．There are a lot of places of interest in Xi’an ________ it has a long history. A．if B．because C．as soon as D．so that 【答案】B 【详解】句意：西安有很多名胜古迹，因为它有悠久的历史。 考查连词辨析。if如果；because因为；as soon as一……就……；so that以便。分析句子可知，设空处前后为因果关系，用because引导原因状语从句。故选B。 27．He had to go home ________ he is in poor health. A．as a result B．because C．so D．because of 【答案】B 【详解】句意：他不得不回家，因为他身体不好。 考查原因状语从句。as a result因此，介词短语；because因为，引导原因状语从句；so所以；because of因为，后接名词、‌代词、‌动名词等。‌空后“he is in poor health”是空前“他不得不回家”的原因，所以此处应用because引导原因状语从句。故选B。 28．She’s my hero __________ she’s one of the best players in the world. A．because B．so C．or D．because of 【答案】A 【详解】句意：她是我的英雄，因为她是世界上最好的运动员之一。 考查连词辨析。because因为，后接句子；so所以；or或者；because of因为，后接名词或代词。根据“She’s my hero...she’s one of the best players in the world.”可知，空后表原因，需用because来引导原因状语从句。故选A。 29．I want to buy something special for my mother, ________ her birthday is coming. A．so B．although C．because D．but 【答案】C 【详解】句意：我想给我妈妈买一些特别的东西，因为她的生日快到了。 考查连词辨析。so因此；although虽然；because因为；but但是。根据“I want to buy something special for my mother”和“her birthday is coming”可知，前后是因果关系，前果后因，应该用because引导原因状语从句。故选C。 30．—It’s said that Zhenjiang Pot Cover Noodles are very delicious. —Well, ________ we are here, why not have a try? A．though B．unless C．since D．before 【答案】C 【详解】句意：——据说镇江锅盖面很好吃。——嗯，既然我们来了，为什么不试一试呢？ 考查连词辨析。though尽管；unless除非；since既然；before在……之前。分析句子可知，此处指既然都到镇江了，就去试试锅盖面，应用since引导原因状语从句。故选C。 31．People live in this small city comfortably and happily, ________ the cost of living here is not very high. A．when B．unless C．because D．although 【答案】C 【详解】句意：人们在这个小城市生活得舒适快乐，因为这里的生活成本不是很高。 考查状语从句。when当……时候，引导时间状语从句；unless除非，引导条件状语从句；because因为，引导原因状语从句；although尽管，引导让步状语从句。根据“the cost of living here is not very high.”可知，这是人们在这个小城市生活得舒适快乐的原因。故选C。 32．—Your English has improved so much! How hard-working you are! —I didn’t believe. I could make it _______ I tried my best. A．since B．because C．if D．until 【答案】B 【详解】句意；——你的英语进步很大！你真努力啊！——我不敢相信。我能成功因为我尽最大努力了。 考查连词辨析。since自从，既然；because因为；if如果；until直到。根据“I could make it … I tried my best”可知，成功是因为尽了最大的努力，空格后表示成功的直接原因，用because引导原因状语从句，故选B。 33．_________ you are free today, could you help me with housework? A．Since B．Though C．Unless D．Until 【答案】A 【详解】句意：既然你今天有空，你能帮我做家务吗？ 考查从属连词辨析。Since既然；Though尽管；Unless除非；Until直到。根据“you are free today”可知，今天有空，就可以帮忙做家务，此处应用since引导原因状语从句。故选A。 34．________ you can’t work out the problem, perhaps you need to ask your classmates for help. A．Unless B．Though C．Since D．Whether 【答案】C 【详解】句意：既然你解不出这道题，也许你需要向你的同学求助。 考查连词辨析。Unless除非；Though尽管；Since既然，由于；Whether是否。“you can’t work out the problem”是向同学求助的原因，用Since引导原因状语从句。故选C。 35．History is my favorite subject ________ it’s very interesting. A．if B．though C．when D．because 【答案】D 【详解】句意：历史是我最喜欢的科目，因为它很有趣。 考查从属连词辨析。if如果；though虽然；when当……时；because因为。空格前后表达的是因果关系，属于“前果后因”型，应用because引导原因状语从句，故选D。 36．________ you know little about this art form, you can find a book to learn. A．Though B．While C．When D．Since 【答案】D 【详解】句意：既然你对这种艺术形式知之甚少，你可以找本书来学习。 考查连词辨析。Though尽管；While然而；When当……时候；Since既然，因为。根据“...you know little about this art form, you can find a book to learn.”可知，前句“对艺术形式了解甚少”是后句“学习”的原因，设空处引导原因状语从句，选项D符合语境。故选D。 37．Many people were dying ________ they did not get to hospital quickly enough. A．so that B．because C．although D．so 【答案】B 【详解】句意：很多人因为没有及时送往医院而濒临死亡。 考查连词辨析。so that为了；because因为；although虽然；so所以。根据“Many people were dying...they did not get to hospital quickly enough.”可知，前后句子是因果关系，空处应是because，引导原因状语从句，表示很多人生命垂危的原因是没有及时送往医院。故选B。 38．—It’s said that Xinyuan mutton tastes delicious. —Well, ________ we are here, why not go to the restaurant and order some? A．though B．unless C．since D．whenever 【答案】C 【详解】句意：——据说鑫源羊肉味道鲜美。——嗯，既然我们都来了，为什么不去餐厅点一些呢？ 考查连词辨析。though尽管；unless除非；since既然；whenever无论何时。根据“...we are here, why not go to the restaurant and order some?”可知，既然我们在这里，为什么不去饭店点一些吃呢，since符合语境，引导原因状语从句。故选C。 39．________ everyone is here, let’s begin our meeting. A．Unless B．Since C．Although D．When 【答案】B 【详解】句意：既然大家都到齐了，我们开始开会吧。 考查连词辨析。Unless除非；Since既然；Although尽管；When当……时。根据“... everyone is here, let’s begin our meeting.”可知，既然所有人都在这里，那我们开始会议，since符合语境，引导原因状语从句。故选B。 40．We didn’t enjoy the holiday ________ the weather was so awful. A．though B．if C．unless D．because 【答案】D 【详解】句意：我们不喜欢这个假期，因为天气太糟糕了。 考查连词辨析。though虽然；if如果；unless除非；because因为。前后是因果关系，前果后因，用because引导原因状语从句。故选D。 41．You can’t feed cats any chocolate ________ it’s harmful to them. A．though B．so C．while D．as 【答案】D 【详解】句意：你不能给猫喂巧克力，因为那对它们有害。 考查连词辨析。though虽然；so因此；while当……时；as因为。“it’s harmful to them”是“You can’t feed cats any chocolate”的原因，用as引导原因状语从句，故选D。 42．_______ you have seen how it works, why not try it yourself? A．Now that B．So that C．In order to D．No longer 【答案】A 【详解】句意：既然您已经了解了它的工作原理，为什么不亲自尝试一下呢？ 考查连词。Now that既然，是连词；So that以便于，是连词；In order to为了，是介词短语；No longer不再，是副词短语。此处接从句，用连词，排除CD两项。建议你自己尝试一下，是因为你已经了解了它的工作原理，因此用now that引导原因状语从句，故选A。 43．Many older buildings in Dalian look beautiful ________ workers make them look as good as new. A．while B．if C．although D．because 【答案】D 【详解】句意：大连的许多老建筑看起来很漂亮，因为工人们使它们看起来像新的一样。 考查连词辨析。while当……的时候；if如果；although虽然；because因为。根据“workers make them look as good as new.”可知，这里是由because引导的原因状语从句。故选D。 44．Because I was ill, ________ I didn’t go to school. A．/ B．so C．but D．yet 【答案】A 【详解】句意：因为我生病了，所以我没有上学。 考查原因状语从句。so所以；but但是；yet还。根据题干可知，此句是because引导的原因状语从句，不和so连用，题干句子结构完整，空处也不用其他连词。故选A。 45．—It’s said that Beijing Duck is very famous and delicious. —Well, _______ we’re here, why not go to the restaurant and order some? A．unless B．though C．whenever D．since 【答案】D 【详解】句意：——据说北京烤鸭很有名，很好吃。——好吧，既然我们在这里，为什么不去餐馆点一些呢？ 考查连词辨析。unless除非；though尽管；whenever无论何时；since既然。根据“...we’re here, why not go to the restaurant and order some”可知，“我们在这里”是“点餐”的原因，since引导原因状语从句。故选D。 46．Quan Hongchan did really well in the competition ________ she practiced day and night. A．although B．because C．so D．but 【答案】B 【详解】句意：全红禅在比赛中表现得很好，因为她日夜练习。 考查连词。although尽管；because因为；so所以；but但是。前一句表示她在比赛中表现得好，后一句表示她日夜练习，前后表示因果关系，后一句是原因，因此用because引导原因状语从句，故选B。 47．—Did Alice write back to Mr. Smith? —She didn’t have to, ________ she’ll visit him tomorrow. A．though B．unless C．when D．because 【答案】D 【详解】句意：——爱丽丝给史密斯先生回信了吗？ ——她没必要，因为她明天要去看他。 考查连词辨析。though尽管；unless除非；when当……时候；because因为。根据“she’ll visit him tomorrow.”可知，这是她不必给史密斯先生回信的原因，应用because来引导句子。故选D。 48．Elva likes Room 102 ________ it is big ________ tidy. A．because; but B．because; and C．so; and D．so; but 【答案】B 【详解】句意：Elva喜欢102房间，因为它又大又整洁。 考查连词辨析。beacuse因为；but但是；and和；so因此。根据“Elva likes Room 102 ... it is big...”可知，两者为因果关系，前果后因，第一空用because引导原因状语从句；第二空前big与空后tidy表示并列，应用and连接。故选B。 49．—Why do you like listening to music? —________ it makes me feel relaxed. A．Because of B．Because C．Since D．As 【答案】B 【详解】句意：——你为什么喜欢听音乐？——因为它让我感到放松。 考查从属连词。Because of因为，后跟短语；Because因为，后跟句子；Since既然；As由于。根据“Why do you like listening to music? ”可知，Why提问的特殊疑问句询问原因，需要使用Because回答。故选B。 50．________ you didn’t answer my call, I left a message on WeChat. A．If B．As C．While D．Before 【答案】B 【详解】句意：由于你没有接我的电话，所以我在微信上留言了。 考查连词辨析。If如果；As由于，因为；While当……的时候；Before在……以前。根据“...you didn’t answer my call, I left a message on WeChat.”可知，因为对方没接电话，所以我才在微信上留言，前半句是后半句的原因，因此“As”符合语境。故选B。 51．Spiders are considered friends to gardeners ________ they eat lots of bugs that attack plants. A．although B．unless C．because D．until 【答案】C 【详解】句意：蜘蛛被认为是园丁的朋友，因为它们吃很多攻击植物的虫子。 考查连词。although虽然；unless除非；because因为；until直到。根据“they eat lots of bugs that attack plants”可知是因为它们吃很多攻击植物的虫子，表因果关系，故选C。 52．My phone bill is high ________ I have lots of friends and we like to talk on the phone. A．or B．so C．but D．because 【答案】D 【详解】句意：我的电话话费很高，因为我有许多朋友，而且我们喜欢在电话上聊天。 考查连词辨析。or或者；so所以；but但是；because因为。根据“I have lots of friends and we like to talk on the phone”可知，因为我有许多朋友，我们喜欢在电话上聊天，所以我的电话费很高，所以用because引导原因状语从句。故选D。 53．—Look, there are more and more electric cars driving along the street. —Yeah. They are a big hit _________ they produce less air pollution. A．unless B．though C．but D．because 【答案】D 【详解】句意：——看，街上行驶着越来越多的电动汽车。——是的。它们大受欢迎，因为它们产生的空气污染更少。 考查连词辨析。unless除非；though尽管；but但是；because因为。根据空处前后句可知，后句是前句的原因，应用because引导原因状语从句，故选D。 54．________ we are good friends, let me share your trouble and worries. A．Since B．Though C．Until D．Unless 【答案】A 【详解】句意：因为我们是好朋友，让我来分担你的麻烦和苦恼吧。 考查连词辨析。Since因为；Though虽然；Until直到；Unless除非。分析前后句关系可知，是因果关系，且前句是原因，因此用“Since”。故选A。 55．I don’t have to introduce her to you ________ you know the girl. A．until B．unless C．since D．whenever 【答案】C 【详解】句意：既然你认识那个女孩，我就不必把她介绍给你了。 考查连词辨析。until直到；unless除非；since既然；whenever无论何时。根据“you know the girl.”可知，因为已经认识那个女孩，所以就不必介绍了，应用since引导原因状语从句，故选C。 56．—What shall we do to kill time? —Well, ________ it is Star Cinema’s half-price day, why not go to watch a film? A．since B．whether C．although D．until 【答案】A 【详解】句意：——我们该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？ 考查从属连词辨析。since既然，因为（引导原因状语从句）；whether是否；although尽管（引导让步状语从句）；until直到（引导时间状语从句）。根据“…it is Star Cinema’s half-price day, why not go to watch a film”可知因为今天是星空影院的半价日，所以建议一起去看电影。故选A。 57．—Do you like traveling by plane? —Not at all, ________ I have to wait for long before it takes off. A．until B．though C．because D．unless 【答案】C 【详解】句意：——你喜欢坐飞机旅行吗？  ——一点也不，因为我得等很久才能起飞。 考查连词辨析。until直到；though尽管；because因为；unless除非。根据“I have to wait for long before it takes off.”可知，此处表原因。故选C。 58．Nanjing Forest Music Festival is worth attending ________ it mixes traditional Chinese music and modern Western music. A．while B．until C．whenever D．because 【答案】D 【详解】句意：南京森林音乐节是值得参加的，因为它融合了中国传统音乐和现代西方音乐。 考查连词辨析。while与……同时；until直到；whenever无论何时；because因为。根据“Nanjing Forest Music Festival is worth attending”和“it mixes traditional Chinese music and modern Western music”可知，前后句为因果关系，前果后因，应用because进行连接。故选D。 59．Parents should not compare their children with others too often ________ every child is a treasure. A．because B．and C．so D．unless 【答案】A 【详解】句意：父母不应该经常拿自己的孩子和别人比较，因为每个孩子都是一个宝贝。 考查连词辨析。because因为；and和，又；so所以；unless除非。分析句子结构可知，前后两句存在因果关系，前句为果，后句为因，应用because引导原因状语从句。故选A。 60．Victor would like to be a doctor in the future ________ he likes helping sick people. A．when B．as C．because D．or 【答案】C 【详解】句意：维克多将来想成为一名医生，因为他喜欢帮助生病的人。 考查从属连词辨析。when当……时候；as当……时候；because因为；or或者。根据“Victor would like to be a doctor in the future…he likes helping sick people”可知，此处在说想成为医生的原因，应用because引导原因状语从句。故选C。 61．People often give me fans as presents __________ they know I like them. A．because B．while C．so D．before 【答案】A 【详解】句意：人们经常送我扇子作为礼物，因为他们知道我喜欢扇子。 考查从属连词辨析。because因为；while当……时候；so因此；before在……之前。由“People often give me fans as presents…they know I like them”可知，人们送扇子给我是因为我喜欢扇子，应用because引导原因状语从句。故选A。 62．_________ you’re busy, I won’t stay here any longer. A．For B．As C．Though D．Since 【答案】D 【详解】句意：既然你忙，我不会再待在这儿了。 考查连词。For因为，语气最弱，只是表示“顺便提到的说明，不能在句首；As由于；Though 即使，尽管，引导让步状语从句；Since既然。根据“I won’t stay here any longer.”可知是解释原因，且语气较强，用since引导原因状语从句。故选D。 63．—Dad, could I have more chocolate? —You’d better not ________ too much sweet food is harmful to your health. A．if B．before C．though D．because 【答案】D 【详解】句意：——爸爸，我可以再来点巧克力吗？——你最好不要，因为吃太多甜食对你的健康有害。 考查连词辨析。if如果；before在……之前；though虽然；because因为。根据“You’d better not...too much sweet food is harmful to your health.”可知最好不要吃太多巧克力，因为吃太多对健康有害，用because引导原因状语从句。故选D。 64．Many wild animals don’t have a safe place to live in ________ villages and farms are growing bigger and taking away their land. A．as B．until C．as long as D．so that 【答案】A 【详解】句意：许多野生动物没有一个安全的地方生活，因为村庄和农场越来越大，夺走了它们的土地。 考查连词辨析。as因为；until直到；as long as只要；so that为了。前后两句是因果关系，此处表示原因，用as引导原因状语从句。故选A。 65．Tony never spends any money in buying book, _________ he doesn’t like reading. A．so B．because C．although D．because of 【答案】B 【详解】句意：托尼从不花钱买书，因为他不喜欢读书。 考查连词。so因此；because因为；although虽然；because of由于。根据“Tony never spends any money in buying book…he doesn’t like reading.”可知是指托尼从不花钱买书，因为他不喜欢读书，because引导原因状语从句。故选B。 66．The course of life never runs smoothly ________ it is full of ups and downs. A．since B．though C．while D．unless 【答案】A 【详解】句意：人生之路从不一帆风顺，因为它充满了起伏。 考查连词辨析。since因为；though虽然；while然而；unless除非。根据“The course of life never runs smoothly...it is full of ups and downs.”可知，此空是since引导原因状语从句，表示“因为人生充满了起伏，所以人生之路从来都不是一帆风顺的”。故选A。 67．Road salt is commonly used to clear the snow on roads during winter ______ it makes it harder for water and snow to freeze. A．though B．because C．if D．unless 【答案】B 【详解】句意：在冬季，道路盐通常用于清除道路上的积雪，因为它会使水和雪更难结冰。 考查连词。though尽管，表示转折；because因为，表原因；if如果，表示条件关系；unless除非，表示否定条件关系。根据“Road salt is commonly used to clear the snow on roads during winter”和“it makes it harder for water and snow to freeze”可知，前后句是因果关系。故选B。 68．You can hardly find the historical site ________ it is under a clothes shop and a bakery. A．since B．because C．if D．until 【答案】B 【详解】句意：你很难找到历史遗迹，因为它在一家服装店和一家面包店的下面。 考查从属连词词义辨析。since自……以来；because因为；if如果；until直到……为止。分析可知，“it is under a clothes shop and a bakery”是“You can hardly find the historical site”的原因，所以用because引导原因状语从句。故选B。 69．Elaine was late for the morning meeting ________ she missed the early bus. A．unless B．though C．because D．until 【答案】C 【详解】句意：伊莱恩早会迟到了，因为她错过了早班车。 考查从属连词辨析。unless除非；though尽管；because因为；until直到。结合句意可知，前句“Elaine was late for the morning meeting”与后句“she missed the early bus.”表示因果关系，应用because引导原因状语从句。故选C。 70．________ everybody is here, let’s begin our meeting. A．Since B．While C．Although 【答案】A 【详解】句意：既然大家都到齐了，我们开始开会吧。 考查连词辨析。Since既然；While在……期间；Although虽然，尽管。“everybody is here”是“begin our meeting”的原因，应用since引导原因状语从句。故选A。 71．—What’s your secret to learning English well? —I read aloud. It’s a good method ________ it helps improve my memory. A．if B．because C．unless D．though 【答案】B 【详解】句意：——你学好英语的秘诀是什么？——我大声朗读。这是一个好方法，因为它有助于提高我的记忆力。 考查连词辨析。if如果；because因为；unless除非；though尽管。根据“It’s a good method...it helps improve my memory.”可知，前后为因果关系，因为大声朗读能帮助我提高记忆，所以它是一个好方法。故选B。 72．Why not use this app to save your pocket money ________ you are not going to spend it? A．until B．unless C．though D．since 【答案】D 【详解】句意：既然你不打算用，为什么不用这款应用软件把你的零用钱存起来呢？ 考查连词辨析。until直到……为止；unless除非；though尽管；since既然。根据“Why not use this app to save your pocket money...you are not going to spend it?”可知，两句为因果关系，前果后因，所以是since引导的原因状语从句，表示明显的原因或已知的事实。故选D。 73．Chinese people prefer the color red during the Spring Festival ______ they think red can bring good luck. A．so B．because C．but D．or 【答案】B 【详解】句意：中国人在春节期间更喜欢红色，因为他们认为红色能带来好运。 考查连词辨析。so所以；because因为；but但是；or或者。根据“they think red can bring good luck.”可知，因为他们觉得红色能带来好运气，所以更喜欢红色。故选B。 74．We should do sports every day ________ it is good for our health. A．until B．because C．while D．though 【答案】B 【详解】句意：我们应该每天做运动，因为这对我们的健康有好处。 考查从属连词词义辨析。until直到……为止；because因为；while当……的时候；though尽管。分析可知，“it is good for our health”是“We should do sports every day”的原因，所以用because引导原因状语从句。故选B。 75．—Nothing to worry about. He won’t leave until we arrive. —________ time is money, we should not keep others waiting. A．Though B．Unless C．Since D．If 【答案】C 【详解】句意：——没什么好担心的。直到我们到达他才会离开。——既然时间就是金钱，我们就不应该让别人等待。 考查连词辨析。Though虽然；Unless除非；Since既然；If如果。根据“... time is money, we should not keep others waiting.”可知，前后两句为因果关系，应用since引导原因状语从句，故选C。 76．Perhaps you should ask someone else for help ________ you can’t solve the problem. A．so B．but C．since D．unless 【答案】C 【详解】句意：既然你不能解决这个问题，也许你应该向其他人寻求帮助。 考查连词辨析。so因此；but但是；since既然；unless除非。根据“you can’t solve the problem”可知，此处指既然不能解决这个问题，用since引导原因状语从句。故选C。 77．The athlete received a lot of cheers from the audience _________ she won the champion in the final. A．because B．though C．so that D．even if 【答案】A 【详解】句意：那名运动员收到了来自观众的无数欢呼，因为她在决赛中赢得了冠军。 考查连词辨析。because因为；though尽管；so that以便于；even if即使。分析前后句关系可知“she won the champion in the final”是“The athlete received a lot of cheers from the audience”的原因，因此应用“because”引导原因状语从句。故选A。 78．I’m sure Sarah will win the girls’ 800-meter race ________ she has been practicing really hard in the past three months. A．unless B．because C．though D．until 【答案】B 【详解】句意：我相信莎拉会赢得女子800米比赛，因为她在过去的三个月里一直在努力练习。 考查连词辨析。unless除非；because因为；though虽然；until直到。前后两句是因果关系，此处表示原因，用because引导原因状语从句。故选B。 79．Reading aloud is a good reading method ________ it will help us to memorize information better and longer. A．because B．although C．unless D．while 【答案】A 【详解】句意：大声朗读是一个好的阅读方法，因为它会帮助我们更好更久地记住信息。 考查连词辨析。because因为；although尽管；unless除非；while当……的时候。根据“Reading aloud is a good reading method...it will help...”可知，此处应表达的是因果关系，所以应选用表示原因的连词because。故选A。 80．—John, ________ we’ve got a few minutes to wait for the meal, let’s read the poem To Wang Lun. —OK, Mom. A．since B．though C．until D．before 【答案】A 【详解】句意：——约翰，既然我们还有几分钟时间等餐，让我们读一下《赠汪伦》这首诗吧。 ——好的，妈妈。 考查从属连词辨析。since由于，既然；though虽然，尽管；until直到……为止；before在……之前。根据“we’ve got a few minutes to wait for the meal, let’s read the poem To Wang Lun.”可知，前后句之间表达的是因果关系，因此用since引导原因状语从句。故选A。 81．The river has become much cleaner ___________ the villagers made great efforts to protect it. A．if B．until C．though D．because 【答案】D 【详解】句意：这条河变得干净多了，因为村民们做出了巨大的努力来保护它。 考查连词辨析。if如果；until直到；though尽管；because因为。分析句子可知，前后是因果关系，前果后因，故选D。 82．Life never runs smoothly ________ it is full of ups and downs. A．though B．since C．while D．unless 【答案】B 【详解】句意：生活从不是一帆风顺的，因为它充满了起起落落。 考查连词。though虽然；since因为；while然而；unless除非。根据“Life never runs smoothly...it is full of ups and downs.”可知，此处应用since，引导原因状语从句，表示因为生活充满了起伏，所以它从来都不是一帆风顺的。故选B。 83．—It is said that the famous snack smelly toufu in Changsha tastes strange! —________ we have been here, why not give it a try? A．Since B．When C．If D．Though 【答案】A 【详解】句意：——据说长沙有名的小吃臭豆腐吃起来怪怪的！——既然我们在这里，为什么不试试呢？ 考查连词辨析。Since既然；When当……时；If如果；Though虽然。根据“why not give it a try?”可知，此处是指既然我们在这里，为什么不去试试，用since引导原因状语从句。故选A。 84．—It’s said that Beijing Duck is very delicious. —Well, ________ we are here, why not have a try? A．though B．unless C．since D．before 【答案】C 【详解】句意：——据说北京烤鸭很好吃。——好吧，既然我们在这里，为什么不试一试呢？ 考查连词辨析。though尽管；unless除非；since既然；before“在……之前”。根据“we are here, why not have a try”可知，既然在北京，就该去试试北京烤鸭，此处应用since引导原因状语从句。故选C。 85．English is my favorite subject ________ it’s very interesting. A．if B．though C．whether D．as 【答案】D 【详解】句意：英语是我最喜欢的科目，因为它非常有趣。 考查连词。if如果；though虽然；whether是否；as因为。横线后解释原因，所以是as。故选D。 86．More teachers are willing to receive AI training. ________ AI technology in helping with teaching becomes more and more popular. A．or B．unless C．because D．though 【答案】C 【详解】句意：更多的老师愿意去接受AI培训，因为AI科技在辅助教学方面变得越来越受欢迎。 考查连词辨析。or或者；unless除非；because因为；though尽管。根据“AI technology...becomes more and more popular.”可知空后的句子表示老师选择AI培训的原因，用because引导原因状语从句，故选C。 87．________ you are busy, let me do it for you. A．As well as B．As soon as C．Now that D．So that 【答案】C 【详解】句意：既然你很忙，让我为你做这件事吧。 考查连词辨析。as well as和；as soon as一……就……；now that既然；so that以便于。根据“ you are busy, let me do it for you”可知，此处表示既然很忙，就让我代你做，故选C。 88．—________ you’re Lisa’s good friend, you should help her. —OK, Ms. Jones. I’ ll do my best. A．Before B．Since C．After D．While 【答案】B 【详解】句意：——既然你是丽萨的好朋友，你就应该帮她。——好的，琼斯女士，我会尽力的。 考查连词词义辨析。Before……之前；Since既然；After……之后；While在……期间。根据“you’re Lisa’s good friend, you should help her.”可知，前后句为因果关系，Since“既然”符合语境。故选B。 89．Let’s go home, ________ it is late. A．so B．and C．as D．but 【答案】C 【详解】句意：让我们回家吧，因为时间太晚了。 考查连词辨析。so所以；and并且；as因为；but但是。横线后“it is late”是前文“Let’s go home”的原因，故选C。 90．________ there is no bus service there, we have to walk. A．When B．If C．Since D．So 【答案】C 【详解】句意：因为那里没有公共汽车服务，我们不得不步行。 考查连词辨析。When当……时候；If如果；Since因为；So所以。根据“…there is no bus service there, we have to walk.”可知，此处说的是“因为那里没有公共汽车服务”，应该用since引导原因状语从句。故选C。 91．_______ it rained heavily, Daddy suggested ________ the room quickly. A．Since; entering B．As; to enter C．As; to enter into D．Since; entering into 【答案】A 【详解】句意：因为雨下得很大，爸爸建议赶快进屋。 考查连词辨析和非谓语动词。Since因为；entering进入，为enter的动名词或现在分词形式，主要用于具体的空间或物体的进入，以及参与某些活动或比赛；As当……时；to enter为动词不定式；to enter into为动词不定式；entering into进入，表示开始从事某事、参与某活动或讨论细节。根据“…it rained heavily, Daddy suggested…the room quickly.”可知，此处指因为雨下得很大，爸爸建议赶快进屋；前半句与后半句为因果关系，第一个空应用Since引导原因状语从句；suggest doing sth.“建议做某事”，动词短语，第二个空表示“进入房间”，应用entering。故选A。 92．—When shall we start, sir? —_________ every one of us is here, let’s start right now. A．Before B．Until C．Since D．While 【答案】C 【详解】句意：——我们什么时候出发，先生？——既然大家都来了，我们现在就出发吧。 考查连词辨析。Before在……之前；Until直到；Since由于、既然；While当……时。根据下文“let’s start right now”可知，现在就出发是由于人都到齐了。故选C。 93．________ white represents purity and peace, it is used in many important situations. A．While B．Whether C．Since D．Though 【答案】C 【详解】句意：因为白色代表纯洁与和平，所以它被用于许多重要场合。 考查连词辨析。While当……时；Whether是否；Since因为；Though虽然。根据“white represents purity and peace, it is used in many important situations.”可知，句子前句是后句的原因，用since引导原因状语从句。故选C。 94．Tony couldn’t go to the concert with us ________ he was busy with his work. A．or B．because C．so D．but 【答案】B 【详解】句意：托尼不能和我们一起去听音乐会，因为他忙于工作。 考查连词辨析。or或者；because因为；so所以；but但是。根据“Tony couldn’t go to the concert with us”和“he was busy with his work.”可知，前后是因果关系，并且后面是前面的原因。故选B。 95．Our school life is more interesting now _________ we can enjoy ourselves in different clubs. A．because B．whether C．unless D．although 【答案】A 【详解】句意：我们的学校生活现在更有趣了，因为我们可以在不同的俱乐部玩得很开心。 考查连词辨析。because因为；whether是否；unless除非；although尽管。分析句子可知，学校生活更有趣的原因是可以在不同的俱乐部玩得开心，前后文之间是因果关系，后文表示原因，应用because连接。故选A。 96．Fish can only live in the water ________ there are cats on the shore (岸)! A．and B．although C．but D．because 【答案】D 【详解】句意：鱼只能在水里生活，因为岸上有猫！ 考查连词辨析。and和；although虽然；but但是；because因为。“there are cats on the shore”是“Fish can only live in the water”的原因，用because引导原因状语从句，故选D。 97．Many students lose marks simply ________ they do not read the questions carefully. A．unless B．so C．before D．because 【答案】D 【详解】句意：许多学生丢分仅仅是因为他们没有仔细阅读问题。 考查连词辨析。unless除非；so因此；before在……之前；because因为。分析句子可知，学生丢分的原因是没有仔细阅读问题，后者表原因，应用because连接，引导原因状语从句。故选D。 98．It’s hard for us to say goodbye ________ we have so many happy days to remember. A．so        B．because      C．although        D．until 【答案】B 【详解】句意：我们很难说再见，因为我们有很多快乐的日子要记住。 考查连词辨析。so所以；because因为；although虽然；until直到。后句“we have so many happy days to remember”是前句“It’s hard for us to say goodbye”的原因，用because引导原因状语从句。故选B。 99．—Indian street food may taste a bit strange. —Well, we are here, why not give it a try? A．if B．although C．unless D．since 【答案】D 【详解】句意：——印度街头食物可能尝起来有点怪。——嗯，既然我们在这儿，为什么不试一试。 考查连词。if如果；although虽然；unless除非；since既然。分析句子可知，横线上的词引导后面的原因状语从句，所以是since。故选D。 100．After the earthquake, Nick told his son that ________ they were both alive, they did not fail and they could start again. A．when B．since C．while D．before 【答案】B 【详解】句意：地震发生后，尼克告诉儿子，既然他们都还活着，他们就没有失败，可以重新开始。 考查连词辨析。when当……时；since自从，既然；while虽然，与……同时；before在……之前。根据“Nick told his son that ... they were both alive, they did not fail and they could start again.”可知，既然他们还活着，他们就没有失败，since引导原因状语从句。故选B。 2 同步新教材，周周有练习，月月有重点！ 7 同步新教材，周周有练习，月月有重点！ 学科网（北京）股份有限公司 $$ 2024-2025学年一线教师制作精品新课系列资料，已编校！ 2024-2025学年一线教师制作精品新课系列资料，已编校！ Unit5 Art world 重点语法：原因状语从句进阶讲练100题 语法知识精讲 原因状语从句 1．引导原因状语从句的连词主要有：because, as, since等。并列连词for也可表示原因。每个连词的含义不尽相同。 连词 位置 内涵 语气 回答why 被强调 because(因为) 主句前或后 直接因果关系 强 能 能 as (由于) 主句前或后 双方都知道的原因 弱 不能 不能 since/now that(既然) 通常位于主句前 for(因为) 位于句后 用于补充说明的原因 弱 不能 不能 He was criticized by the teacher, because he was late for class. 因为他迟到了，老师批评了他。 I can't go with you, as I have a lot of work to do. 我不能和你一起去，因为我有很多工作要做。 Since everyone is here, we can begin our discussion. 既然大家都在这儿，我们可以开始讨论了。 2．when(既然)，也可以引导原因状语从句。 It was foolish of you to take a taxi when you could walk there in five minutes. 既然步行5分钟就能到那里，你却去乘出租汽车，真够愚蠢的。 3.其他词引导的原因状语从句 seeing that (鉴于，由于)，considering that (考虑到)， in that(因为)， now that既然， given that考虑到， for the reason that因为， Now that you are a high school student, you are responsible for what you do. 既然是高中生了，你就要为你的行为负责。 Seeing (that) he refused to help us, there’s no reason that we should now help him. 他既然曾经拒绝帮助我们，我们现在没有理由来帮助他。 Given that she is interested in children, I am sure teaching is the right career for her. 考虑到她喜欢孩子，我可以肯定教书是最适合她的职业。 语法知识精练 1．My mother was very happy yesterday ________ I cooked the delicious meal on my own. A．because B．although C．but D．or 2．I didn’t go to watch the movie with him ________ I saw it last week. A．until B．so C．if D．because 3．Little Tim joined the Helpers’ Club two weeks ago __________ he is an animal lover. A．if B．until C．because D．unless 4．The red suitcase is expensive ________ it’s made of leather (皮). A．because B．though C．when D．if 5．My friend Mike finished the work the best of us _______ he was the most experienced. A．because B．and C．but D．unless 6．________ you have grown up, you should learn to look after yourselves. A．Since B．Until C．Although D．Unless 7．Our family would like to buy electric cars ________ they produce less air pollution. A．because B．so C．but D．and 8．It’s hard for us to say goodbye ________ we have so many happy days to remember. A．so B．because C．although D．until 9．Mr. Black was late for work ________ his car didn’t work on the way, not ________ the bad weather. A．because, because of B．because of, because C．because, because D．because of, because of 10．I didn’t go to school yesterday ________ I had a terrible toothache. A．because B．but C．so D．or 11．I always get up early on weekdays ________ I’m afraid I will be late for school. A．though B．because of C．so D．because 12．Everyone wants to make friends with Andy, ________ he is very friendly. A．but B．because C．so D．or 13．He didn’t go to school ________ he was ill. A．so B．because C．or D．so that 14．We would like to buy electric cars ________ they produce less air pollution. A．because B．so C．though D．but 15．Mr Zhou was really anxious ________ he couldn’t find his car. A．while B．because C．because of D．until 16．I think Leonardo da Vinci was a great inventor ________ he was a pioneer in many areas. A．because B．or C．if D．but 17．Sally likes pandas __________ she thinks they are lovely. A．so B．but C．because D．though 18．We need to take care of the earth ________ it’s the only planet we have for humans to live on. A．though B．if C．because D．until 19．Little Tim have been in the Helpers’ Club for two years ________ he is an animal lover. A．if B．because C．until D．unless 20．John feels excited ________ he is going to have a tennis match with an excellent player this weekend. A．because B．but C．or D．so 21．The idea of “Made in China” caught the world’s attention in the 2023 Asian Games ________ it played a big role in the event. A．if B．unless C．because D．although 22．He has got everything ready ________ he may want to go hiking. A．as B．when C．if D．with 23．In Beijing, some 24-hour libraries are very popular with people ________ they are open all the time and in good places with big spaces and other good things. A．even if B．unless C．as D．or 24．David had to stay in the hospital ________ he hurt his head. A．or B．so C．but D．because 25．Don’t be afraid of changing, ________ it’s leading you to a new beginning. A．if B．because C．though D．unless 26．There are a lot of places of interest in Xi’an ________ it has a long history. A．if B．because C．as soon as D．so that 27．He had to go home ________ he is in poor health. A．as a result B．because C．so D．because of 28．She’s my hero __________ she’s one of the best players in the world. A．because B．so C．or D．because of 29．I want to buy something special for my mother, ________ her birthday is coming. A．so B．although C．because D．but 30．—It’s said that Zhenjiang Pot Cover Noodles are very delicious. —Well, ________ we are here, why not have a try? A．though B．unless C．since D．before 31．People live in this small city comfortably and happily, ________ the cost of living here is not very high. A．when B．unless C．because D．although 32．—Your English has improved so much! How hard-working you are! —I didn’t believe. I could make it _______ I tried my best. A．since B．because C．if D．until 33．_________ you are free today, could you help me with housework? A．Since B．Though C．Unless D．Until 34．________ you can’t work out the problem, perhaps you need to ask your classmates for help. A．Unless B．Though C．Since D．Whether 35．History is my favorite subject ________ it’s very interesting. A．if B．though C．when D．because 36．________ you know little about this art form, you can find a book to learn. A．Though B．While C．When D．Since 37．Many people were dying ________ they did not get to hospital quickly enough. A．so that B．because C．although D．so 38．—It’s said that Xinyuan mutton tastes delicious. —Well, ________ we are here, why not go to the restaurant and order some? A．though B．unless C．since D．whenever 39．________ everyone is here, let’s begin our meeting. A．Unless B．Since C．Although D．When 40．We didn’t enjoy the holiday ________ the weather was so awful. A．though B．if C．unless D．because 41．You can’t feed cats any chocolate ________ it’s harmful to them. A．though B．so C．while D．as 42．_______ you have seen how it works, why not try it yourself? A．Now that B．So that C．In order to D．No longer 43．Many older buildings in Dalian look beautiful ________ workers make them look as good as new. A．while B．if C．although D．because 44．Because I was ill, ________ I didn’t go to school. A．/ B．so C．but D．yet 45．—It’s said that Beijing Duck is very famous and delicious. —Well, _______ we’re here, why not go to the restaurant and order some? A．unless B．though C．whenever D．since 46．Quan Hongchan did really well in the competition ________ she practiced day and night. A．although B．because C．so D．but 47．—Did Alice write back to Mr. Smith? —She didn’t have to, ________ she’ll visit him tomorrow. A．though B．unless C．when D．because 48．Elva likes Room 102 ________ it is big ________ tidy. A．because; but B．because; and C．so; and D．so; but 49．—Why do you like listening to music? —________ it makes me feel relaxed. A．Because of B．Because C．Since D．As 50．________ you didn’t answer my call, I left a message on WeChat. A．If B．As C．While D．Before 51．Spiders are considered friends to gardeners ________ they eat lots of bugs that attack plants. A．although B．unless C．because D．until 52．My phone bill is high ________ I have lots of friends and we like to talk on the phone. A．or B．so C．but D．because 53．—Look, there are more and more electric cars driving along the street. —Yeah. They are a big hit _________ they produce less air pollution. A．unless B．though C．but D．because 54．________ we are good friends, let me share your trouble and worries. A．Since B．Though C．Until D．Unless 55．I don’t have to introduce her to you ________ you know the girl. A．until B．unless C．since D．whenever 56．—What shall we do to kill time? —Well, ________ it is Star Cinema’s half-price day, why not go to watch a film? A．since B．whether C．although D．until 57．—Do you like traveling by plane? —Not at all, ________ I have to wait for long before it takes off. A．until B．though C．because D．unless 58．Nanjing Forest Music Festival is worth attending ________ it mixes traditional Chinese music and modern Western music. A．while B．until C．whenever D．because 59．Parents should not compare their children with others too often ________ every child is a treasure. A．because B．and C．so D．unless 60．Victor would like to be a doctor in the future ________ he likes helping sick people. A．when B．as C．because D．or 61．People often give me fans as presents __________ they know I like them. A．because B．while C．so D．before 62．_________ you’re busy, I won’t stay here any longer. A．For B．As C．Though D．Since 63．—Dad, could I have more chocolate? —You’d better not ________ too much sweet food is harmful to your health. A．if B．before C．though D．because 64．Many wild animals don’t have a safe place to live in ________ villages and farms are growing bigger and taking away their land. A．as B．until C．as long as D．so that 65．Tony never spends any money in buying book, _________ he doesn’t like reading. A．so B．because C．although D．because of 66．The course of life never runs smoothly ________ it is full of ups and downs. A．since B．though C．while D．unless 67．Road salt is commonly used to clear the snow on roads during winter ______ it makes it harder for water and snow to freeze. A．though B．because C．if D．unless 68．You can hardly find the historical site ________ it is under a clothes shop and a bakery. A．since B．because C．if D．until 69．Elaine was late for the morning meeting ________ she missed the early bus. A．unless B．though C．because D．until 70．________ everybody is here, let’s begin our meeting. A．Since B．While C．Although 71．—What’s your secret to learning English well? —I read aloud. It’s a good method ________ it helps improve my memory. A．if B．because C．unless D．though 72．Why not use this app to save your pocket money ________ you are not going to spend it? A．until B．unless C．though D．since 73．Chinese people prefer the color red during the Spring Festival ______ they think red can bring good luck. A．so B．because C．but D．or 74．We should do sports every day ________ it is good for our health. A．until B．because C．while D．though 75．—Nothing to worry about. He won’t leave until we arrive. —________ time is money, we should not keep others waiting. A．Though B．Unless C．Since D．If 76．Perhaps you should ask someone else for help ________ you can’t solve the problem. A．so B．but C．since D．unless 77．The athlete received a lot of cheers from the audience _________ she won the champion in the final. A．because B．though C．so that D．even if 78．I’m sure Sarah will win the girls’ 800-meter race ________ she has been practicing really hard in the past three months. A．unless B．because C．though D．until 79．Reading aloud is a good reading method ________ it will help us to memorize information better and longer. A．because B．although C．unless D．while 80．—John, ________ we’ve got a few minutes to wait for the meal, let’s read the poem To Wang Lun. —OK, Mom. A．since B．though C．until D．before 81．The river has become much cleaner ___________ the villagers made great efforts to protect it. A．if B．until C．though D．because 82．Life never runs smoothly ________ it is full of ups and downs. A．though B．since C．while D．unless 83．—It is said that the famous snack smelly toufu in Changsha tastes strange! —________ we have been here, why not give it a try? A．Since B．When C．If D．Though 84．—It’s said that Beijing Duck is very delicious. —Well, ________ we are here, why not have a try? A．though B．unless C．since D．before 85．English is my favorite subject ________ it’s very interesting. A．if B．though C．whether D．as 86．More teachers are willing to receive AI training. ________ AI technology in helping with teaching becomes more and more popular. A．or B．unless C．because D．though 87．________ you are busy, let me do it for you. A．As well as B．As soon as C．Now that D．So that 88．—________ you’re Lisa’s good friend, you should help her. —OK, Ms. Jones. I’ ll do my best. A．Before B．Since C．After D．While 89．Let’s go home, ________ it is late. A．so B．and C．as D．but 90．________ there is no bus service there, we have to walk. A．When B．If C．Since D．So 91．_______ it rained heavily, Daddy suggested ________ the room quickly. A．Since; entering B．As; to enter C．As; to enter into D．Since; entering into 92．—When shall we start, sir? —_________ every one of us is here, let’s start right now. A．Before B．Until C．Since D．While 93．________ white represents purity and peace, it is used in many important situations. A．While B．Whether C．Since D．Though 94．Tony couldn’t go to the concert with us ________ he was busy with his work. A．or B．because C．so D．but 95．Our school life is more interesting now _________ we can enjoy ourselves in different clubs. A．because B．whether C．unless D．although 96．Fish can only live in the water ________ there are cats on the shore (岸)! A．and B．although C．but D．because 97．Many students lose marks simply ________ they do not read the questions carefully. A．unless B．so C．before D．because 98．It’s hard for us to say goodbye ________ we have so many happy days to remember. A．so        B．because      C．although        D．until 99．—Indian street food may taste a bit strange. —Well, we are here, why not give it a try? A．if B．although C．unless D．since 100．After the earthquake, Nick told his son that ________ they were both alive, they did not fail and they could start again. A．when B．since C．while D．before 2 同步新教材，周周有练习，月月有重点！ 7 同步新教材，周周有练习，月月有重点！ 学科网（北京）股份有限公司 $$