2023-2024八年级英语下册(仁爱版)Unit 6Topic 3 Bicycle riding is good exercise. Grammar 语法+条件状语从句(含解析)

Unit 6 Enjoying Cycling Topic 3
条件状语从句
(时间:60分钟,满分:100分)
条件状语从句的概念:在复合句中,从句是表示条件的状语,叫做条件状语从句。条件状语从句可以放在句首或句尾。
条件状语从句常见的连接词:
1.if(如果)
if可以引导真实条件句和非真实条件句,在引导真实条件句时,其引导的事件是可能真实发生的:
If everyone obeys the traffic rules, the roads will be much safer.
在引导非真实条件句时,其引导的事件是与现实不同的,因此需要使用虚拟语气:
If I were you, I would stick to it.
2.unless=if...not...(除非)
We will be late unless we hurry. = We will be late if we do not hurry.
They face certain death unless they can be rescued today.
3.as/so long as (只要)
You can stay here as long as you keep the room clean.
As long as you're happy, that's all that matters.
特殊的连接词:
suppose/supposing that:如果,假设
provided/providing that:如果,假设
only if:只要
on condition that:若是,以......为条件
Suppose that you win the lottery, what would you do with the money
You can borrow my car, providing that you return it by tomorrow.
You can go to the party only if you finish your homework.
I will go abroad on condition that my husband goes with me.
条件状语从句的时态:
If it rains tomorrow, I won' t climb the hills. (主将从现)
We can win the basketball game if he joins us. (主情从现)
Help your mom with the housework if you finish your homework early. (主祈从现)
条件状语从句与其他句式的转换:
1.借助“祈使句+and / or+ 一般将来时的句子”这一句型来转换。and在句意上表示顺承关系, or表示转折关系。
如:If you get up early, you'll get there on time.
= Get up early, and you'll get there on time.
= Get up early, or you won't get there on time.
借助介词without或with来转换条件状语从句。
如:If there is no water, fish will die. = Fish will die without water.
单项选择(本大题共50小题,每小题2分,共100分)
1.________ you come to the club, I’m sure you can make some friends.
A.Unless B.Though C.If
2.If you ________ to the party with us tomorrow, you will have a great time there.
A.will go B.go C.went
3.Remember you will fail in the exam ________ you take it seriously.
A.unless B.if C.after D.because
4.I won’t go to the movies this afternoon ________ I’m free.
A.unless B.if C.when
5.— Is this math problem really difficult
— Yes, even the top student can’t solve it ________ our teacher shows us the answer.
A.when B.if C.unless D.until
6.If she ________ busy tomorrow, she will ________ come to your birthday party.
A.isn’t; sure B.isn’t; certainly C.won’t be; truly D.doesn’t; also
7.There are no buses to the beach. ________ you have a car, it’s difficult to get there.
A.Unless B.Since C.Because
8.I’m sure that you will succeed one day ________ you don’t give up easily.
A.unless B.or C.but D.if
9.________ you study hard, you won’t pass the final exam.
A.Until B.Unless C.When D.If
10.—Can I take up singing and join the club
—Certainly. It’s never too late ______ you take action at once.
A.before B.if C.although
11.You can’t imagine how moving the story is _________ you read it.
A.so that B.as soon as C.if D.unless
12.You can’t go to the library __________ you don’t have a student ID card.
A.if B.so C.unless
13.—What’s your plan for this Sunday
—If it ________ rain, we ________ fishing.
A.doesn’t; will go B.won’t; will go C.isn’t; will go D.didn’t; will go
14.If you ________ this article carefully, you ________ about the differences between Chinese names and Western names.
A.read; know B.will read; know C.read; will know
15.You’ll never go to college, ________ you work really hard.
A.although B.if C.unless
16.Frank ________ to see his grandma if he ________ free tomorrow.
A.goes; will be B.will go; is C.will go; will be
17.—Would you like to spend time with me this weekend
—If I’m free, I ________.
A.do B.would C.am D.will
18.—Will you go to Bob’s birthday party
—No. ________ he invites me.
A.If B.When C.Unless
19.________we keep working hard every day, our dream will come true one day.
A.As long as B.Although C.Until D.After
20.We will have a party if Tom ________ our team.
A.will join B.joins C.joined D.is joining
21.—We should do our best to prepare for the exam.
—Yes. We’ll not get good grades _________ we work hard.
A.unless B.until C.when
22.— Does your mother have a hobby
— No, ________ you call going shopping a hobby.
A.if B.although C.unless D.because
23.—Do you think people can get together to celebrate the Spring Festival
—I’m afraid not, ________ the virus can die out.
A.once B.unless C.if D.because
24.—Will we take the P. E. test next month
—Yes. Practice more ________ you want to pass it and be stronger.
A.if B.unless C.until D.though
25.—Your aunt often walks the dog in the morning.
—Yes, ________ bad weather stops her.
A.when B.unless C.if D.as long as
26.You will lose marks in the exam ________ you improve your handwriting.
A.although B.if C.unless D.because
27.—Can I go to the beach this afternoon, Mom
—I’m afraid you can’t ________ you finish your homework.
A.unless B.because C.after D.though
28.You can’t get good grades _____ you work hard .
A.unless B.if C.when D.because
29.—Mom, can I watch TV now
—No. You can’t watch it ________ you finish your homework.
A.when B.after C.unless
30.If Tom shares his problems with his good friends, he ________ better.
A.will get B.gets C.got
31.He does not like travelling alone. He will not go travelling ________ somebody goes with him.
A.if B.unless C.because D.when
32.You won’t do well in your math exam ________ you work hard.
A.unless B.because C.after D.if
33.—Will there be hundreds of travelers on the moon someday
—Well, we won’t be sure ________ it really happens.
A.as B.though C.once D.unless
34.If it ________ tomorrow, we ________ to Mount Tai to enjoy snow.
A.will snow; will drive B.will snow; drive
C.snows; drive D.snows; will drive
35.—I don’t know where Sandy is now. If she ________ back, please call me first.
—OK, I will.
A.comes B.will come C.came D.come
36.You won’t find a good way to solve the problem ________ you try your best.
A.if B.unless C.but D.when
37.You won’t be good at English ________ you practice more.
A.unless B.though C.because D.if
38.We won’t go to the movies ________ she isn’t busy.
A.unless B.until C.and D.or
39.—I hear your brother is a big fan of music.
—Yes. He doesn’t care about the kinds of the music ________ they sound beautiful and meaningful.
A.as if B.as long as C.as soon as D.until
40.—We won’t pass the exam ________ we study hard.
—That’s why we are trying our best to prepare for the exam.
A.although B.while C.unless
41.Your dream will never come true ________ you don’t work hard.
A.unless B.if C.that D.although
42.If they ________ a party tonight, half the class ________. Because we have a test tomorrow.
A.have, come B.have, will come
C.have, won’t come D.will have, won’t come
43.We can’t pass the exam ________ we work hard from now on.
A.because B.if C.unless D.or
44.We won’t believe it ______ we see it with our own eyes.
A.though B.unless C.before D.until
45.—Mom, I want to watch the TV Program China’s Got Talent now.
—Sorry, you can’t watch it ______ you finish your homework.
A.unless B.so C.if D.after
46.Father is too tired today. Don’t call him ________ it is necessary.
A.unless B.until C.when D.though
47.Everybody can hear you ________ you speak in a louder voice.
A.unless B.if C.so that D.although
48.________ you keep working hard, you will be better at playing the piano.
A.If B.Unless C.Though D.Before
49.—English is so difficult for me.
—_________ you keep practicing, you will do it better.
A.As soon as B.As long as C.Though
50.Mum doesn’t let Jack go to the party ________ he promises to be back before 9 p.m. tonight.
A.so B.and C.unless D.but
参考答案:
1.C
【详解】句意:如果你来俱乐部,我相信你能交到一些朋友。
考查连词辨析。Unless除非;Though虽然;If如果。根据“you come to the club”可知,这是交到朋友的条件,应说“如果”你来俱乐部,就能交到一些朋友。故选C。
2.B
【详解】句意:如果你明天和我们一起去参加聚会,你会玩得很开心的。
考查条件状语从句。根据“If you”以及“you will have a great time there.”可知该句是if引导的条件状语从句,遵循“主将从现”,因此从句使用一般现在时。故选B。
3.A
【详解】句意:记住,除非你认真对待,否则你考试会不及格的。
考查连词辨析。unless除非;if如果;after在……之后;because因为。分析句子可知,后句是前句的否定条件,用unless引导条件状语从句。故选A。
4.A
【详解】句意:今天下午我不会去看电影,除非我有空。
考查连词辨析。unless除非;if如果;when当……时候。根据空前“I won’t go to the movies this afternoon”与空后“I’m free”可知,该句子要表达的意思是“如果没空就不去看电影”,应unless引导条件状语从句。故选A。
5.C
【详解】句意:——这个数学题真的很难吗?——是的,除非老师给我们看答案,否则即使是尖子生也解答不出来。
考查从属连词。when何时;if如果;unless除非;until直到。根据观察可知题干是复合句,表示即使是尖子生也解答不出来,除非是老师公布答案,空格处表示“除非”,引导条件状语从句,应填unless。故选C。
6.B
【详解】句意:如果她明天不忙,她一定会来参加你的生日聚会。
考查条件状语从句及副词用法。根据题干可知,此句中if“如果”引导条件状语从句。if引导的条件状语从句,若主句是一般将来时,从句用一般现在时。根据“she will”可知,主句时态为一般将来时,故从句的时态为一般现在时态。形容词busy“忙的”前应用be动词,主语是she,故第一空填isn’t;结合选项可知,动词come“来”应用副词certainly来修饰,故填certainly。故选B。
7.A
【详解】句意:没有去海滩的公共汽车。除非你有车,否则很难到达那里。
考查连词辨析。Unless除非;Since自从;Because因为。根据“...you have a car, it’s difficult to get there.”可知,此处表示否定的条件,用unless引导条件状语从句。故选A。
8.D
【详解】句意:我相信如果你不轻易放弃,总有一天你会成功的。
考查连词辨析。unless除非,如果不;or否则;but但是;if如果。“you don’t give up easily”是“you will succeed one day”的条件,应用if“如果”引导条件状语从句。故选D。
9.B
【详解】句意:除非你努力学习,否则你将无法通过期末考试。
考查连词辨析。Until直到……为止;Unless除非;When当……时候;If如果。根据“you study hard, you won’t pass the final exam”可知除非努力学习,否则无法通过考试,应用unless引导条件状语从句。故选B。
10.B
【详解】句意:——我可以开始唱歌并加入俱乐部吗?——当然可以。如果你能马上采取行动,永远都不会太迟。
考查从属连词辨析。before在……之前;if如果;although虽然。根据“It’s never too late”和“you take action at once.”可知,前后句是条件关系,是if引导的条件状语从句。故选B。
11.D
【详解】句意:除非你读过这个故事,否则你无法想象它有多感人。
考查unless条件状语从句。so that以便,为了;as soon as一……就……;if如果;unless除非。“...you read it”是“You can’t imagine how moving the story is”的否定条件,用unless引导条件状语从句。故选D。
12.A
【详解】句意:如果你没有学生证,你不能去图书馆。
考查连词辨析。if如果;so因此;unless除非。根据“You can’t go to the library”和“you don’t have a student ID card.”可知,句子前后是条件关系,用if连接。故选A。
13.A
【详解】句意:——这周日你有什么计划?——如果不下雨,我们就去钓鱼。
考查条件状语从句。if引导的条件状语从句中,主句用一般将来时,从句用一般现在时。rain是实义动词,构成否定需要借助助动词do或does。故选A。
14.C
【详解】句意:如果你仔细阅读这篇文章,你将会了解中国名字和西方名字的区别。
考if引导的条件状语从句。根据“If you...this article carefully, you...about the differences between Chinese names and Western names.”可知,此处是If引导条件状语从句,符合“主将从现”原则,即主句用一般将来时,从句用一般现在时。故选C。
15.C
【详解】句意:除非你真的很努力,否则你永远上不了大学。
考查连词辨析。although虽然;if如果;unless除非。“you work really hard”是“You’ll never go to college”的否定条件,用unless引导条件状语从句。故选C。
16.B
【详解】句意:如果弗兰克明天有空,他将去看望他的奶奶。
考查动词时态。本句是if引导条件状语从句,时态上遵循“主将从现”原则,所以if从句用一般现在时,主句用一般将来时(will do),故选B。
17.D
【详解】句意:——你想要和我一起度过周末么?——如果我有空,我会的。
考查助动词和省略。“if”引导的条件状语从句遵循“主将从现”的原则,主句是一般将来时,从句用一般现在时表示将来。根据“If I’m free”可知主句表达“我将和你一起度过”,用一般将来时的结构,为了避免重复,用省略的形式“will”即可。故选D。
18.C
【详解】句意:——你要去Bob的生日宴会吗 ——不,除非他邀请我。
考查连词辨析。if如果;when当……的时候;unless除非。根据“No…he invites me. ”的句意可知,此处表示的是除非他邀请我,我才去他的生日宴会,unless符合语境。故选 C。
19.A
【详解】句意:只要我们每天坚持努力,我们的梦想总有一天会实现的。
考查连词辨析。As long as只要;Although虽然;Until直到……为止;After在……之后。根据“…we keep working hard every day, our dream will come true one day.”可知,“we keep working hard every day”是“our dream will come true one day”的条件,应用as long as引导条件状语从句。故选A。
20.B
【详解】句意:如果汤姆加入我们的队伍,我们将举办个派对。
考查一般现在时。will join将来时;joins一般现在时;joined一般过去时;is joining现在进行时。“if”引导的条件状语遵循主将从现,由于Tom是三单,所以动词是三单joins。故选B。
21.A
【详解】句意:——我们应该尽最大的努力准备考试。——是的。除非我们努力学习,否则我们不会取得好成绩。
考查从属连词。unless除非,如果不,引导条件状语从句;until直到……时,引导时间状语从句;when当……时,引导时间状语从句。根据“We’ll not get good grades…we work hard.”及选项可知,“we work hard”是“We’ll not get good grades”的否定条件,所以用unless引导条件状语从句。故选A。
22.C
【详解】句意:——你妈妈有爱好吗?——没有,除非你把购物称作是一种爱好。
考查连词辨析。if 如果;although 尽管;unless 除非,相当于not ... if;because因为。“you call going shopping a hobby 你把购物称作是一种爱好”是妈妈有爱好的条件,但是回答是“No”,也就是说妈妈没有爱好,条件句这时不能用if引导,而要用unless,故选C。
23.B
【详解】句意:——你认为人们可以聚在一起庆祝春节吗?——恐怕不会,除非病毒能消灭。
考查连词辨析。once一旦;unless除非;if如果;because因为。“the virus can die out”是“I’m afraid not”的否定条件,用unless引导条件状语从句。故选B。
24.A
【详解】句意:——我们下个月要参加体育考试吗?——是的。如果你想通过考试,变得更强壮,就多练习。
考查连词辨析。if如果;unless除非;until直到;though尽管。“Practice more多练习”是“you want to pass it and be stronger想通过考试,并且变得更强壮”的条件,用if引导条件状语从句,故选A。
25.B
【详解】句意:——你姑姑经常在早上遛狗。——是的,除非坏天气阻止了她。
考查连词辨析。when当……时;unless除非;if如果;as long as只要。分析句子可知,此处指除非是坏天气,姑姑都会在早上遛狗,应用unless表条件。故选B。
26.C
【详解】句意:除非你改进你的书写,否则你考试会失分的。
考查连词辨析。although尽管;if如果;unless除非;because因为。根据“You will lose marks in the exam ... you improve your handwriting.”可知,你将会在考试中失分,除非你改善自己的书写,用unless引导条件状语从句。故选C。
27.A
【详解】句意:——我今天下午能去海滩吗,妈妈?——恐怕你不能,除非你完成你的家庭作业。
考查连词辨析。unless除非;because因为;after在……后;though尽管。根据“I’m afraid you can’t...you finish your homework.”可知,此处指除非完成作业,否则不能去,用unless引导条件状语从句。故选A。
28.A
【详解】句意:如果你不努力学习,你就不能获得好成绩。
考查连词辨析。unless除非,如果……不,引导条件状语从句;if如果;when当……时候,引导时间状语从句;because因为,引导原因状语从句。根据“You can’t get good grades”判断后面说的是如果你不努力学习,故用连词unless。故选A。
29.C
【详解】句意:——妈妈,我现在可以看电视了吗?——不。除非你完成作业,否则你不能看。
考查连词辨析和条件状语从句。when当……时;after在……之后;unless除非。根据“You can’t watch it”和“you finish your homework”可知,此处是指除非你完成作业,否则你不能看电视。此处应用unless引导条件状语从句。故选C。
30.A
【详解】句意:如果汤姆和他的好朋友分享他的问题,他将变得更好。
考查状语从句。will get将会变得,一般将来时;gets一般现在时单三形式;got一般过去时。根据“If Tom shares his problems with his good friends, he...better”可知,此句是if引导的条件状语从句,遵循主将从现原则,主句用一般将来时,故选A。
31.B
【详解】句意:他不喜欢独自旅行。除非有人和他一起去,否则他就不去旅行了。
考查连词辨析。if如果;unless除非;because因为;when当……时候。根据句意可知,“有人和他一起去”是“他不去旅行”的否定条件,符合unless的用法,即“除非”,引导条件状语从句,相当于if not。故选B。
32.A
【详解】句意:除非你努力学习,否则你的数学考试不会考得好。
考查连词辨析。unless除非;because因为;after在……之后;if如果。分析两个句子可知,后句是前句的否定条件,用unless引导条件状语从句。故选A。
33.D
【详解】句意:——有一天会有成百上千的旅行者登上月球吗?——嗯, 除非真的发生了,否则我们无法确定。
考查连词辨析。as由于;though尽管;once一旦;unless除非。根据“won’t be sure”(无法确定)和“it really happens”(它真的发生)的逻辑关系,可知空处应填unless“除非”引导条件状语从句。故选D。
34.D
【详解】句意:如果明天下雪,我们将会开车去泰山赏雪。
考查动词时态。本句是if引导的条件状语从句,时态上遵循“主将从现”原则,也就是主句“we...to Mount Tai to enjoy snow”用一般将来时(will do),从句“If it...tomorrow”用一般现在时,故选D。
35.A
【详解】句意:——我不知道桑迪现在在哪里。如果她回来,请先打电话给我。——好的,我会的。
考查动词时态。根据“If she... back, please call me first.”可知,该句为if引导的条件状语从句,主句为祈使句,遵循主祈从现,从句用一般现在时,主语为she,动词用三单。故选A。
36.B
【详解】句意:除非你尽力,否则你不会找到解决这个问题的好方法。
考查连词辨析。if如果,是否;unless除非;but但是;when当……时。根据“You won’t find a good way to solve the problem...you try your best.”可知,后一句是前一句的否定条件,故此处应用unless引导条件状语从句。故选B。
37.A
【详解】句意:除非你更多地练习,否则你将不会擅长英语。
考查从属连词辨析。unless除非;though虽然;because因为;if如果。根据“You won’t be good at English … you practice more.”可知,前后是条件关系,除非更多地练习英语,否则英语不会变好。故选A。
38.A
【详解】句意:我们不会去看电影除非她不忙。
考查连词词义辨析。unless除非;until直到;and和;or或者。结合句意可知用unless引导条件状语从句。故选A。
39.B
【详解】句意:——我听说你哥哥是个音乐迷。——是的。他不在乎音乐的种类,只要听起来美妙而有意义。
考查从属连词辨析。as if仿佛,好像,引导方式状语从句;as long as 只要,既然,引导条件状语从句和原因状语从句;as soon as 一……就……,引导时间状语从句;until直到,引导时间状语从句。根据分析“He doesn’t care about the kinds of the music”和“they sound beautiful and meaningful.”可知,前一句应该是主句,后一句是由as long as引导的条件状语从句,作为主句的条件。故选B。
40.C
【详解】句意:——除非我们努力学习,否则我们不会通过考试。——这就是为什么我们正在尽力为考试做准备。
考查连词辨析。although尽管;while当……时候;unless除非。根据句意可知,后者不发生是前者的条件,符合unless的用法,即“除非”,引导条件状语从句,相当于if not。故选C。
41.B
【详解】句意:你如果不努力工作,你的梦想将永远不会实现。
考查从属连词词义辨析。unless除非,引导条件状语从句;if如果,引导条件状语从句;that如此……以至于……,引导结果状语从句;although尽管,引导让步状语从句。分析语境可知,后半句是一个条件状语从句,空处表示“如果”。故选B。
42.C
【详解】句意:如果他们今晚举行聚会,班上一半的人不会来。因为我们明天有考试。
考查if引导的条件状语从句。if引导的条件状语遵循“主将从现”,主句用一般将来时,从句用一般现在时,因此排除AD选项;由“If they…a party tonight, half the class…. Because we have a test tomorrow.”可知,此处指的是“班上一半的人不会来”,因此用否定形式。故选C。
43.C
【详解】句意:如果从现在起我们不努力学习,我们就不能通过考试。
考查连词辨析。because因为;if如果;unless除非;or或者。根据“We can’t pass the exam...we work hard from now on.”可知,空处应用unless引导条件状语从句,表示“除非努力学习,否则不会通过考试”。故选C。
44.B
【详解】句意:除非我们亲眼看到,否则我们是不会相信的。
考查连词辨析。though尽管;unless除非;before在之前;until直到。根据“We won’t believe it … we see it with our own eyes”可知,除非亲眼看到,否则不会相信的,用unless引导条件状语从句,故选B。
45.A
【详解】句意:——妈妈,我想看电视节目《中国达人秀》。——抱歉,除非你完成作业,否则你不能看。
考查连词辨析。unless除非;so因此;if如果;after在之后。根据“you can’t watch it … you finish your homework”可知,除非完成作业,否则不能看电视,用unless引导条件状语从句,故选A。
46.A
【详解】句意:爸爸今天太累了。除非有必要,否则不要给他打电话。
考查连词辨析。unless除非;until直到……为止;when当……时;though虽然,尽管。根据上文“Father is too tired today.”可知,此处使用unless引导的条件状语从句,即:除非很有必要,否则不要给他打电话。故选A。
47.B
【详解】句意:如果你说话的声音大一点,每个人都能听到。
考查连词辨析。unless除非;if如果;so that以便于;although虽然。“you speak in a louder voice”是“Everyone can hear you”的肯定条件,用if引导条件状语从句。故选B。
48.A
【详解】句意:如果你继续努力,你的钢琴弹得会更好。
考查连词辨析。If如果;Unless除非;Though虽然;Before在……之前。根据语境分析可知,“you keep working hard”是“you will be better at playing the piano.”的肯定条件,用if引导条件状语从句。故选A。
49.B
【详解】句意:——英语对我来说太难了。——只要你坚持练习,你就会做得更好。
考查从属连词辨析。As soon as一……就;As long as只要;Though虽然。“you keep practicing”是“you will do it better”的条件,用As long as引导条件状语从句,故选B。
50.C
【详解】句意:妈妈不让杰克去参加聚会,除非他答应今晚9点前回来。
考查连词辨析。so因此;and而且;unless除非;but但是。根据“Mum doesn’t let Jack go to the party he promises to be back before 9 p.m. tonight.”可知,除非杰克答应9点前回家,否则妈妈不允许他去聚会,前后句是条件关系,应用unless引导条件状语从句。故选C。

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