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百日打卡-状语从句2
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。
一、单项选择
1. I love going to school ________ everyone in my class is friendly.
A.before B.although C.because D.unless
2. Many wild animals don’t have a safe place to live, ________ villages and farms are growing bigger and
taking away their land.
A.because B.until C.although D.before
3. We are making a big cake ________ it’s Dad’s birthday today.
A.because B.until C.once
4. I want to buy something special for my grandmother, _______ her birthday is coming.
A.because B.although C.so
5.—Mum, may I have more chocolate?
—You’d better not ________ too much sweet food is bad for health.
A.until B.while C.although D.because
6. Lucy is busy making a fruit cake ________ it’s her mother’s birthday today.
A.or B.but C.although D.because
7.________ we’ve made the promise, let’s keep to it and not give up easily.
A.Whether B.Since C.Though D.Unless
8. Life is like a one-way race, so treasure every moment ________ time cannot be won again.
A.so B.as C.if D.unless
9.Nowadays, Chinese food is getting more and more popular _________ it is not only colorful but also
tasty.
A.unless B.because C.although D.until
10.—Did you hear the news about the opening of Ganzhou-Shenzhen high-speed railway on December
10th?
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—Yes. I was excited about it ________ my parents can come back home in 1.5 hours.
A.until B.but C.although D.because
11. Zha Xi didn’t go to school ________ he was ill.
A.because B.because of C.if D.so
12. We didn’t enjoy the trip at all ________ the weather was awful.
A.although B.because C.unless
13. We didn’t enjoy the day ________ it rained heavily.
A.because B.though C.if
14. ________ we have come to the old town, why not taste the local food?
A.If B.Unless C.Since
15. I don’t have to introduce her to you ________ you know the girl.
A.until B.unless C.since D.but
16.________ your father is well again, you no longer have anything to worry about.
A.Since B.Before C.Although D.While
17. Many Chinese people are falling in love with camping ________ long-distance travel is becoming
more difficult.
A.until B.although C.unless D.since
18. ________ you have finished most of your homework at school, you needn’t stay up late to do it.
A.Before B.Until C.Since D.When
19. ________ everything was going according to the plan, there was no need to worry.
A.Since B.Although C.Unless D.Before
20. ________ there are different customs in different countries, it’s necessary to learn them before going
abroad to avoid trouble.
A.As B.Unless C.Although
参考答案:
1.C
【详解】句意:我喜欢去上学,因为我班级的每个人都很友好。
考查连词辨析。before在……之前;although尽管;because因为;unless除非。“我班级的每个人都
很友好”是解释喜欢去上学的原因,用because引导原因状语从句,故选C。
2.A
【详解】句意:很多野生动物没有安全的地方住,因为村子和农场正在逐渐扩大,夺走了它们栖息
之地。
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考查连词。because因为;until直到;although尽管;before在……之前。根据“don’t have a safe
place to live”及“villages and farms are growing bigger and taking away their land”可知,后面的句子表
达原因,用连词“because”。故选A。
3.A
【详解】句意:我们正制作一个巨大的风筝,因为今天是爸爸的生日。
考查连词。because 因为;until 直到;once一旦。根据“We are making a big cake”及“it’s Dad’s
birthday today”,可知前后是因果关系,后面句子解释原因,用连词“because”连接。故选A。
4.A
【详解】句意:我想给我奶奶买点特别的东西,因为她的生日快到了。
考查连词。because因为;although虽然;so因此;空格前后句之间是因果关系,属于“前果后因”
结构,应用because引导原因状语从句,故选A。
5.D
【详解】句意:——妈妈,我可以再多点巧克力吗?——你最好不要,因为太多的甜食对你的健康
不好。
考查连词辨析。until直到;while当……时;although尽管;because因为。根据“You’d better not…
too much sweet food is bad for health”可知,空格后是在解释不能多吃甜食的原因,用 because引导原
因状语从句,故选D。
6.D
【详解】句意:露西正忙着做一个水果蛋糕,因为今天是她妈妈的生日。
考查连词辨析。or“或者”;but“但是”;although“虽然”;because“因为”。根据“Lucy is busy
making a fruit cake”和“it’s her mother’s birthday today”可知,露西做水果蛋糕的原因是今天是她妈妈
生日;前后句为因果关系,应用because来连接。故选D。
7.B
【详解】句意:既然我们已经许下了诺言,就让我们信守诺言,不要轻易放弃。
考连词。Whether是否;Since既然;Though虽然;Unless除非;根据“we’ve made the promise, let’s
keep to 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,
故选B。
8.B
【详解】句意:生活就像单程赛,所以珍惜每个时刻,因为时光一去不复返。
考查连词辨析。so所以;as因为;if如果;unless除非;根据句意,珍惜每个时刻……时光一去不复
返,可知此处用as,表示“因为”。故选B。
9.B
【详解】句意:如今,中国菜越来越受欢迎,因为它不仅颜色鲜艳而且味道鲜美。
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考查连词辨析。unless除非;because因为;although尽管,虽然;until直到。根据“it is not only
colorful but also tasty.”可知,此处是表示中国菜越来越受欢迎的原因,用because引导。故选B。
10.D
【详解】句意:——你听说了12月10日赣深高铁开通的消息了吗?——是的。我很兴奋,因为我
的父母可以在一个半小时内回家。
考查连词辨析。until直到;but但是;although尽管;because因为。结合语境可知赣深高铁通车后,
由于第二个人的父母在一个半小时内就能回家,所以第二个人很兴奋,用because引导原因状语从句。
故选D。
11.A
【详解】句意:扎西没有去学校,因为他生病了。
考查连词辨析。because因为,后接句子;because of因为,后接名词性短语;if如果;so因此。根
据“Zha Xi didn’t go to school”和“he was ill”可知,前后句为因果关系,后一句表示原因,且是从句
故应用because引导原因状语从句。故选A。
12.B
【详解】句意:我们一点也不喜欢这次旅行,因为天气很糟糕。
考查连词辨析。although尽管;because因为;unless除非。根据“We didn’t enjoy the trip at all..the
weather was awful.”可知前后句是因果关系,应用because引导原因状语从句,故选B。
13.A
【详解】句意:我们不喜欢这一天,因为雨下得很大。
考查连词辨析。because 因为;though 虽然;if 如果。根据“We didn’t enjoy the day … it rained
heavily.”可知,不喜欢这一天的原因是雨下得很大,空格处应用 because引导原因状语从句。故选
A。
14.C
【详解】句意:既然我们来到了这个古镇, 为什么不尝尝当地的食物呢?
考查连词辨析。If如果;Unless除非;Since自从、既然。根据“we have come to the old town, why
not taste the local food? ”可知,该句表示的是“既然已经来了古镇,为什么不品尝当地的事物呢?”,
所以使用Since引导原因状语从句。故选C。
15.C
【详解】句意:我不用把她介绍给你,因为你认识那个女孩。
考查连词辨析。until直到;unless除非;since因为;but但是。根据“I don’t have to introduce her to
you...you know the girl”可知前后两句是因果关系,前果后因,用since引导原因状语从句。故选C。
16.A
【详解】句意:既然你父亲已经康复了,你再也没有什么可担心的了。
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考查连词辨析。Since因为,既然;Before在……之前;Although尽管;While当……时。根据“you
no longer have anything to worry about”可知,因为父亲已经康复了,所以不需要担心了;故选A。
17.D
【详解】句意:由于长途旅行变得越来越困难,许多中国人都爱上了露营。
考查连词辨析。until直到;although尽管;unless除非;since因为。根据“long-distance travel is
becoming more difficult.”可知此句和上文之间存在因果关系,用连词since,故选D。
18.C
【详解】句意:既然你在学校已经完成了大部分作业,所以你不必熬夜做。
考查连词辨析。Before 在……之前;Until 直到;Since 既然,因为;When当。根据“you have
finished most of your homework at school, you needn’t stay up late to do it”可知前后两句是因果关系,前
因后果,用since引导原因状语从句。故选C。
19.A
【详解】句意:既然一切都在按计划进行,就没有必要担心了。
考查从属连词辨析。Since既然;Although尽管;Unless除非;Before以前。分析“...everything was
going according to the plan, there was no need to worry.”可知,既然一切都在按计划进行,就没有必要
担心了。since意为“既然”,引导原因状语从句。故选A。
20.A
【详解】句意:因为不同的国家有不同的风俗习惯,所以有必要在出国前了解它们,避免麻烦。
考查连词辨析。As因为;Unless除非;Although尽管。因为不同国家的风俗习惯不同,所以出国前
应该了解它们,故用as引导原因状语从句。故选A。
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