备战2022年中考英语真题专题训练——连词专题（含答案）

备战2022年中考英语真题专题训练——连词专题
考点一：并列连词
1．（2021成都）______ we continue to pull together, we’ll keep winning the game.
A．As long as B．Even though C．As soon as
2．（2021温州）At the meeting, the managers kept arguing about the problem ______ they reached an agreement.
A．after B．when C．until D．since
3．（2021云南昆明）You can’t make progress in math learning ______ you work harder.
A．if B．after C．unless D．because
4．（2021江西）There are no buses to the beach. ______ you have a car, it’s difficult to get there.
A．Since B．After C．Unless D．Because
5．（2021福建）Nowadays you are supposed to have your temperature taken ______ you enter the school.
A．before B．after C．until
6．（2021达州）—Hurry up, dear! ______ we won’t catch up with the train.
—Don’t worry! Time is still enough ______ we can make it.
A．And; or B．Or; but C．And; but D．Or; and
7．（2021海南）Many tourists visit Hainan around the spring Festival, because it’s ______ too cold ______ too hot.
A．both… and B．not only…but also C．neither…nor
8．（2021盐城）Read the book Cute Pets, ______ you will know how to take care of your cat.
A．or B．so C．and D．but
9．（2021贺州）______ Tom ______ Tim is going with you because one of them must stay at home.
A．Either; or B．Neither; nor C．Both; and D．Not only; but also
10．（2021菏泽）—Would you like to tell me something about Yuan Longping
—He’s called “father of hybrid rice” and he helped save ______ China ______ the world from hunger.
A．not only; but also B．either; or C．neither; nor
11．（2021益阳）This dress is very beautiful, ______ it doesn’t look good on me.
A．for B．so C．but
12．（2021天水）______ you practice every day, you won’t make any progress.
A．Although B．Unless C．If D．Since
13．（2021广西）The great scientist Yuan Longping left us last month, ______ he will live in our hearts for ever.
A．so B．but C．if D．since
14．（2021天水）We got so wet. We had ______ umbrellas ______raincoats with us!
A．either; or B．both; and C．neither; nor D．not only; but also
15．（2021营口）He never smokes ______ drops litter in public.
A．and B．or C．but D．so
16．（2021青海）—Mom, can I have the pink skirt and the white shirt I like them very much.
—Sony, baby. They cost too much, but you can choose ______ the skirt ______ the shirt.
A．both, and B．either, or C．neither, nor
17．（2021盘锦）You have to pass a test ______ you can get a license.
A．before B．after C．while D．until
18．（2021青海）—Paul is badly hurt on the playground. Let’s help him up.
—Don’t move him ______ you know some first-aid knowledge.
A．unless B．if C．until
考点二：从属连词
1．（2021遂宁）Our headmaster asks us to watch news every day ______ we can find out what’s going on around the world.
A．so that B．even though C．in order to D．instead of
2．（2021荆州）— How do you like the singing competition yesterday
— Exciting, ______ some students didn’t do very well.
A．so B．and C．though D．because
3．（2021十堰）—I’m afraid I can’t do well in the sports meeting.
—Don’t worry. I will support you, ______ you don’t succeed.
A．even if B．if C．so that D．unless
4．（2021自贡）—Would you like to help me clean the house this weekend
—I’d like to ______ I finish my homework.
A．before B．though C．if
5．（2021重庆）We should take the rest of the food home ______ we can’t finish what we order.
A．if B．so C．unless D．until
6．（2021鸡西）We’ll cause more pollution ______ we find ways to recycle more rubbish.
A．unless B．if C．although
7．（2021东营）More and more children are interested in blind boxes ______ they wonder what is inside.
A．so B．because C．unless D．though
8．（2021齐齐哈尔）Your parents won’t let you go out alone ______ they are sure you’re safe.
A．since B．if C．unless
9．（2021吉林）Ann didn’t know anything about the news ______ Mrs. Brown told her.
A．because B．until C．if
10．（2021重庆）We were lucky yesterday. The bus left ______ we got on it.
A．before B．although C．until D．as soon as
11．（2021成都）______ we continue to pull together, we’ll keep winning the game.
A．As long as B．Even though C．As soon as
12．（2021包头）— Jamie, please send me postcards ______ I’ll know where you have visited.
— It’s a good idea!
A．but B．so C．or D．for
13．（2021包头）______ he is my favorite singer, I didn’t buy his new CD．
A．If B．Ever since C．Even though D．Because
14．（2021黔东南）Judy is an outgoing girl. She shows everything on her face, ______ she is happy or not.
A．whether B．until C．unless D．although
15．（2021云南）______ he heard the little girl crying for help outside, he rushed out of the room.
A．As soon as B．Unless C．If D．Although
16．（2021扬州）______ we always wait for another day, fruitlessly our life will pass away.
A．Until B．If C．Although D．Whether
17．（2021襄阳）—When will you go to see your grandpa
—I’ll see him ______ I get off the plane. You know I miss him very much.
A．as soon as B．as long as C．as far as D．as easily as
18．（2021凉山）—Have you heard of the news about Yuan Longping
—What sad news! He is no longer with us, ______ he will be an inspiration to us all.
A．so B．if C．but D．as
19．（2021黄石）—I can’t get on well with my family.
—Why not talk with them You should communicate ______ things become worse.
A．until B．unless C．after D．before
20．（2021宿迁）Mary shut the window just now ______ she could keep the insects out.
A．so that B．when C．till D．after
21．（2021天津）My cousin became a country doctor ______ he finished medical school.
A．after B．so that C．but D．so
22．（2021岳阳）______ he is 72 years old, ______ he keeps running every day.
A．Although; but B．Although; / C．But; /
23．（2021临沂）______ English has a history of over 2,500 years, the first English dictionary didn’t appear until the 17th century.
A．because B．although C．Unless
24．（2021贵港）—We can’t get on or off a bus ______ it is moving.
—You’re right.
A．unless B．before C．while D．until
25．（2021大庆）—I am worrying about our final exam these days.
—There is nothing to worry about ______ you work hard.
A．until B．so that C．as far as D．as long as
26．（2021河北）I love to listen to rock music ______ I am running.
A．while B．after C．since D．until
27．（2021南京）You need to practise speaking every day ______ you hope to improve your spoken English.
A．if B．although C．unless D．until
28．（2021大连）Tom and Jerry really love each other ______ they fight a lot.
A．if B．though C．until D．because
29．（2021梧州）We won’t believe it ______ we see it with our own eyes.
A．because B．unless C．if D．after
30．（2021贵阳）Jason will go to visit his grandparents ______ he finishes his work this weekend.
A．unless B．though C．if
31．（2021营口）We can get over the trouble ______ we depend on our own country.
A．as much as B．as far as C．as soon as D．as long as
32．（2021丹东）The teacher still spoke very loudly ______ he had a sore throat.
A．so that B．as soon as C．as long as D．even though
33．（2021辽宁）Your dad has just fallen asleep. Don’t wake him up ______ it’s really necessary.
A．unless B．or C．and D．but
34．（2021辽宁）I don’t understand my teacher’s great love ______ I become a teacher myself.
A．if B．until C．since D．though
备战2022年中考英语真题专题训练——连词专题参考答案
考点一：并列连词
1．（2021成都）______ we continue to pull together, we’ll keep winning the game.
A．As long as B．Even though C．As soon as
【答案】A
【解析】句意：只要我们继续齐心协力，我们就会继续赢得比赛。考查短语辨析。As long as只要；Even though尽管；As soon as一……就……。根据语境可知，空格处应填意为“只要”的短语，指的是只要继续努力，就能继续赢得比赛。故选A。
2．（2021温州）At the meeting, the managers kept arguing about the problem ______ they reached an agreement.
A．after B．when C．until D．since
【答案】C
【解析】句意：在会议上，经理们一直就这个问题争论不休，直到达成协议。考查连词辨析。after在……之后；when当……时；until直到；since自从。根据“the managers kept arguing about the problem …they reached an agreement”可知，直到达成协议为止，故选C。
3．（2021云南昆明）You can’t make progress in math learning ______ you work harder.
A．if B．after C．unless D．because
【答案】C
【解析】句意：除非你更加努力，否则你在数学学习上是不会进步的。考查连词辨析。if如果；after在……之后；unless除非；because因为。根据“you work harder”是在数学学习中取得进步的条件，结合“can’t”可知此处表示否定的条件，用unless引导条件状语从句。故选C。
4．（2021江西）There are no buses to the beach. ______ you have a car, it’s difficult to get there.
A．Since B．After C．Unless D．Because
【答案】C
【解析】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。since自从；after在……之后；unless除非；because因为。分析“…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C。
5．（2021福建）Nowadays you are supposed to have your temperature taken ______ you enter the school.
A．before B．after C．until
【答案】A
【解析】句意：现在你应该在进入学校之前测量体温。考查连词辨析。before在……之前；after在……之后；until直到……。根据语境，应是在你进入学校之前测量体温。故选A。
6．（2021达州）—Hurry up, dear! ______ we won’t catch up with the train.
—Don’t worry! Time is still enough ______ we can make it.
A．And; or B．Or; but C．And; but D．Or; and
【答案】D
【解析】句意：—快点，亲爱的！否则我们就赶不上火车了。—别担心！时间还是足够的，我们可以做到。
考查连词辨析。and和；or否则；but但是。根据“we won’t catch up with the train”可知快点是赶上火车的条件，用or表示否定的条件；第二空前后句意是顺承关系，用and连接。故选D。
7．（2021海南）Many tourists visit Hainan around the spring Festival, because it’s ______ too cold ______ too hot.
A．both… and B．not only…but also C．neither…nor
【答案】C
【解析】句意：春节期间很多游客游览海南，因为海南既不冷也不热。考查短语辨析。both… and两者都；not only…but also不仅……而且；neither…nor既不……也不。根据常识可知海南的天气是适中的，不冷不热。故选C。
8．（2021盐城）Read the book Cute Pets, ______ you will know how to take care of your cat.
A．or B．so C．and D．but
【答案】C
【解析】句意：阅读《可爱的宠物》这本书，你会知道如何照顾你的猫。考查连词辨析。or或者；so所以；and和；but但是。“Read the book Cute Pets”与“you will know how to take care of your cat”是并列关系，用连词and连接，故选C。
9．（2021贺州）______ Tom ______ Tim is going with you because one of them must stay at home.
A．Either; or B．Neither; nor C．Both; and D．Not only; but also
【答案】A
【解析】句意：不是汤姆就是蒂姆和你一起去，因为他们中必须有一个待在家里。考查连词辨析。either…or要么……要么；neither…nor既不……也不；both…and……和……都；not only…but also不但……而且。根据“ because one of them must stay at home”可知，要么汤姆去，要么是蒂姆去，两个人只能去一个，故选A。
10．（2021菏泽）—Would you like to tell me something about Yuan Longping
—He’s called “father of hybrid rice” and he helped save ______ China ______ the world from hunger.
A．not only; but also B．either; or C．neither; nor
【答案】A
【解析】句意：—你能告诉我一些关于袁隆平的事情吗？—他被称为“杂交水稻之父”，他不仅拯救了中国，也拯救了世界免于饥饿。考查连词辨析。not only…but also不但……而且；either…or要么……要么；neither…nor既不……也不。根据“he helped save … China … the world from hunger”可知，他不仅仅帮助中国，也帮助了世界免于饥饿，故选A。
11．（2021益阳）This dress is very beautiful, ______ it doesn’t look good on me.
A．for B．so C．but
【答案】C
【解析】句意：这件衣服很漂亮，但我穿不好看。考查连词辨析。for因为；so所以；but但是。分析前后两句，构成转折关系，用but连接，故选C。
12．（2021天水）______ you practice every day, you won’t make any progress.
A．Although B．Unless C．If D．Since
【答案】B
【解析】句意：除非你每天练习，否则你不会有任何进步。考查连词辨析。Although虽然；Unless除非；If如果；Since因为。分析“…you practice every day, you won’t make any progress.”可知，此处表示否定的条件，用unless引导条件状语从句，故选B。
13．（2021广西）The great scientist Yuan Longping left us last month, ______ he will live in our hearts for ever.
A．so B．but C．if D．since
【答案】B
【解析】句意：伟大的科学家袁隆平上个月离开了我们，但他将永远活在我们的心中。考查连词辨析。so因此；but但是；if如果；since自从。“The great scientist Yuan Longping left us last month”与“he will live in our hearts for ever”是转折关系，故选B。
14．（2021天水）We got so wet. We had ______ umbrellas ______raincoats with us!
A．either; or B．both; and C．neither; nor D．not only; but also
【答案】C
【解析】句意：我们都湿透了。我们既没有雨伞也没有雨衣！考查连词。either...or或者……或者……；both...and两者都；neither...nor既不……也不……；not only...but also不但……而且……；根据“We got so wet.”可知，说明既没有雨伞也没有雨衣，表达的是两者都不，应用neither...nor，故选C。
15．（2021营口）He never smokes ______ drops litter in public.
A．and B．or C．but D．so
【答案】C
【解析】句意：他从不抽烟，只在公共场合乱扔垃圾。考查并列连词辨析。and和；or或者；but但是；so因此；根据语境及前面的“never”可知，此处是not...but...的用法， 表示“不是……而是……”，故选C。
16．（2021青海）—Mom, can I have the pink skirt and the white shirt I like them very much.
—Sony, baby. They cost too much, but you can choose ______ the skirt ______ the shirt.
A．both, and B．either, or C．neither, nor
【答案】B
【解析】句意：—妈妈，我可以要粉红色的裙子和白色的衬衫吗？我非常喜欢它们。—索尼，宝贝。它们太贵了，但是你可以选择裙子或者衬衫。考查连词辨析。both…and两者都；either…or两者之一；neither…nor两者都不。根据“They cost too much, but you can choose…the skirt…the shirt.”可知，两件都买太贵了，此处表示两者之一，故选B。
17．（2021盘锦）You have to pass a test ______ you can get a license.
A．before B．after C．while D．until
【答案】A
【解析】句意：你必须通过考试才能获得执照。考查连词辨析。before在……之前；after在……之后；while当……时；until直到。根据“You have to pass a test … you can get a license”可知，先考试，通过之后才能得到执照，故选A。
18．（2021青海）—Paul is badly hurt on the playground. Let’s help him up.
—Don’t move him ______ you know some first-aid knowledge.
A．unless B．if C．until
【答案】A
【解析】句意：—保罗在操场上受了重伤。让我们把他扶起来。—除非你懂一些急救知识，否则不要动他。
考查连词辨析。unless除非；if如果；until直到。根据“Don’t move him…you know some first-aid knowledge.”可知，此处表示一种否定的条件，用unless引导条件状语从句。故选A。
考点二：从属连词
1．（2021遂宁）Our headmaster asks us to watch news every day ______ we can find out what’s going on around the world.
A．so that B．even though C．in order to D．instead of
【答案】A
【解析】句意：我们的校长要求我们每天看新闻，这样我们就可以了解世界各地的情况。考查连词。so that为了；even though尽管；in order to为了，后接短语或单词；instead of代替；“we can find out what’s going on around the world.”是前句的目的，且空格后是句子，应用so that引导目的状语从句，故选A。
2．（2021荆州）— How do you like the singing competition yesterday
— Exciting, ______ some students didn’t do very well.
A．so B．and C．though D．because
【答案】C
【解析】句意：—你觉得昨天的歌唱比赛怎么样？—令人兴奋，尽管有些学生做得不是很好。考查连词辨析。so所以；and和；though尽管；because因为。“Exciting”与“some students didn’t do very well”是转折关系，尽管一些学生表现得不好，但还是很令人兴奋，用though引导让步状语从句，故选C。
3．（2021十堰）—I’m afraid I can’t do well in the sports meeting.
—Don’t worry. I will support you, ______ you don’t succeed.
A．even if B．if C．so that D．unless
【答案】A
【解析】句意：——恐怕我在运动会上做不好。——别担心。即使你不成功，我也会支持你。考查连词。even if即使；if如果；so that为了；unless除非；根据句意可知，此处表达的是即使没有成功，也会支持对方，应用even if引导让步状语从句，故选A。
4．（2021自贡）—Would you like to help me clean the house this weekend
—I’d like to ______ I finish my homework.
A．before B．though C．if
【答案】C
【解析】句意：—这周末你想要帮我打扫房子吗？—如果我写完作业，我就帮。考查条件状语从句。before在……之前；though尽管；if如果。根据句意可知，此处表条件，即如果写完作业，就帮忙，用if引导条件状语从句。故选C。
5．（2021重庆）We should take the rest of the food home ______ we can’t finish what we order.
A．if B．so C．unless D．until
【答案】A
【解析】句意：如果我们点不完，我们应该把剩下的食物带回家。考查连词辨析。if如果；so所以；unless除非；until直到。根据“We should take the rest of the food home”及“we can’t finish what we order”可知，后文是条件，如果吃不完点的食物，就应该把所剩的拿回家，用if引导条件状语从句，故选A。
6．（2021鸡西）We’ll cause more pollution ______ we find ways to recycle more rubbish.
A．unless B．if C．although
【答案】A
【解析】句意：除非我们找到回收更多垃圾的方法，否则我们将造成更多的污染。考查连词辨析。unless除非；if如果；although虽然。“we find ways to recycle more rubbish”是“We’ll cause more pollution”否定条件，用unless引导条件状语从句，相当于if not，故选A。
7．（2021东营）More and more children are interested in blind boxes ______ they wonder what is inside.
A．so B．because C．unless D．though
【答案】B
【解析】句意：越来越多的孩子对盲盒感兴趣，因为他们想知道盒子里装的是什么。考查连词辨析。so所以；because因为；unless除非；though尽管。“More and more children are interested in blind boxes”与“they wonder what is inside”是因果关系，后是因，用because引导原因状语从句，故选B。
8．（2021齐齐哈尔）Your parents won’t let you go out alone ______ they are sure you’re safe.
A．since B．if C．unless
【答案】C
【解析】句意：除非你的父母确定你的安全，否则他们不会让你单独出去的。考查连词辨析。since自从；if如果；unless除非。“they are sure you’re safe”表示否定的条件，可用unless引导条件状语从句，相当于if not，故选C。
9．（2021吉林）Ann didn’t know anything about the news ______ Mrs. Brown told her.
A．because B．until C．if
【答案】B
【解析】句意：直到布朗先生告诉她，安才知道这个消息。考查连词。because因为；until直到；if如果。根据 “Ann didn’t know anything about the news”可知句子用“not…until”表示 “直到……才……”。故选B。
10．（2021重庆）We were lucky yesterday. The bus left ______ we got on it.
A．before B．although C．until D．as soon as
【答案】D
【解析】句意：我们昨天很幸运。我们一上车，公共汽车就开走了。考查连词。before在……之前；although虽然；until直到……；as soon as一……就；由“We were lucky yesterday.”可知，幸运是因为一上车，车就开走了，应用as soon as引导时间状语从句，故选D。
11．（2021成都）______ we continue to pull together, we’ll keep winning the game.
A．As long as B．Even though C．As soon as
【答案】A
【解析】句意：只要我们继续齐心协力，我们就会继续赢得比赛。考查短语辨析。As long as只要；Even though尽管；As soon as一……就……。根据语境可知，空格处应填意为“只要”的短语，指的是只要继续努力，就能继续赢得比赛。故选A。
12．（2021包头）— Jamie, please send me postcards ______ I’ll know where you have visited.
— It’s a good idea!
A．but B．so C．or D．for
【答案】B
【解析】句意：—杰米，请给我寄明信片，这样我就知道你去过哪里了。—这是个好主意！考查连词辨析。but但是；so因此；or或者；for由于。分析空前后句意可知，空处的连词应用so，因此，引出结果。故选B。
13．（2021包头）______ he is my favorite singer, I didn’t buy his new CD．
A．If B．Ever since C．Even though D．Because
【答案】C
【解析】句意：虽然他是我最喜欢的歌手，但我没有买他的新CD。考查从属连词辨析。if如果；ever since从那时起；even though虽然；because因为。分析“…he is my favorite singer, I didn’t buy his new CD.”可知，两句话构成让步关系，用even though引导，故选C。
14．（2021黔东南）Judy is an outgoing girl. She shows everything on her face, ______ she is happy or not.
A．whether B．until C．unless D．although
【答案】A
【解析】句意：朱迪是个外向的女孩。她把一切都表现在脸上，不管她高兴与否。考查连词。whether是否；until直到……才；unless除非；although尽管。whether or not为固定搭配，意为“是否”，符合句意，故选A。
15．（2021云南）______ he heard the little girl crying for help outside, he rushed out of the room.
A．As soon as B．Unless C．If D．Although
【答案】A
【解析】句意：他一听到小女孩在外面喊救命，就冲出了房间。考查连词辨析。As soon as一……就；Unless除非；If如果；Although虽然。根据“…he heard the little girl crying for help outside, he rushed out of the room.”可知，此处表示“一……就”，用as soon as引导时间状语从句，故选A。
16．（2021扬州）______ we always wait for another day, fruitlessly our life will pass away.
A．Until B．If C．Although D．Whether
【答案】B
【解析】句意：如果我们总是等待另一天，我们的生命将徒劳地逝去。考查连词辨析。Until直到……；If如果；Although虽然；Whether是否。分析前后句句意，前句是后句动作发生的条件，故空处连词应用if，如果。故选B。
17．（2021襄阳）—When will you go to see your grandpa
—I’ll see him ______ I get off the plane. You know I miss him very much.
A．as soon as B．as long as C．as far as D．as easily as
【答案】A
【解析】句意：—你什么时候去看你爷爷？—我一下飞机就去见他。你知道我非常想念他。考查连词辨析。as soon as一……就……；as long as只要；as far as就……而言；as easily as如……一样容易。根据“I’ll see him …I get off the plane”可知，是一下飞机就去见爷爷，故选A。
18．（2021凉山）—Have you heard of the news about Yuan Longping
—What sad news! He is no longer with us, ______ he will be an inspiration to us all.
A．so B．if C．but D．as
【答案】C
【解析】句意：—你听说过关于袁隆平的消息吗？—多么不幸的消息！他已不在我们身边，但他将激励我们所有人。考查连词辨析。so所以；if如果；but但是；as由于。“He is no longer with us”与“he will be an inspiration to us all”是转折关系，故选C。
19．（2021黄石）—I can’t get on well with my family.
—Why not talk with them You should communicate ______ things become worse.
A．until B．unless C．after D．before
【答案】D
【解析】句意：—我不能和我的家人友好相处。—为什么不和他们好好谈谈呢？你应该在事情变得更糟糕之前和家人沟通。考查连词。until直到；unless除非；after之后；before在……之前。根据“things become worse”可知表达“在事情变得更糟之前”，用连词 “before”引导时间状语从句。故选D。
20．（2021宿迁）Mary shut the window just now ______ she could keep the insects out.
A．so that B．when C．till D．after
【答案】A
【解析】句意：玛丽刚才关上了窗户，以便把昆虫挡在外面。考查连词。so that为了；when当……时；till直到；after在……之后；根据空格前后句可知，关窗户的目的是挡住昆虫，此处应用so that引导目的状语从句，故选A。
21．（2021天津）My cousin became a country doctor ______ he finished medical school.
A．after B．so that C．but D．so
【答案】A
【解析】句意：我表弟读完医学院后成为一名乡村医生。考查时间状语从句。after在……之后，引导时间状语从句；so that为了，引导目的状语从句；but但是，表转折；so因此，因果。结合句意可知，“became a country doctor ”发生在“finished medical school”之后，所以用after引导时间状语从句，故选A。
22．（2021岳阳）______ he is 72 years old, ______ he keeps running every day.
A．Although; but B．Although; / C．But; /
【答案】B
【解析】句意：虽然他已经72岁了，但他坚持每天跑步。考查连词。Although虽然；but但是。分析“…he is 72 years old…he keeps running every day.”可知，前句表示“虽然”，用although连接；英文关联词二选一，不能同时出现，故选B。
23．（2021临沂）______ English has a history of over 2,500 years, the first English dictionary didn’t appear until the 17th century.
A．because B．although C．Unless
【答案】B
【解析】句意：虽然英语有2500多年的历史，但第一本英语词典直到17世纪才出现。考查连词辨析。because因为；although尽管；unless除非。“English has a history of over 2,500 years”与“the first English dictionary didn’t appear until the 17th century”是让步关系，用although引导让步状语从句，故选B。
24．（2021贵港）—We can’t get on or off a bus ______ it is moving.
—You’re right.
A．unless B．before C．while D．until
【答案】C
【解析】句意：—公共汽车开动时，我们不能上下车。—你说得对。考查连词辨析。unless除非；before在……之前；while当……时候；until直到……为止。根据“We can’t get on or off a bus ... it is moving.”及常识可知，公共汽车在移动时，乘客们不能上下车，用while引导时间状语从句。故选C。
25．（2021大庆）—I am worrying about our final exam these days.
—There is nothing to worry about ______ you work hard.
A．until B．so that C．as far as D．as long as
【答案】D
【解析】句意：—这几天我在担心期末考试。—只要你努力工作，就没有什么可担心的。考查从属连词辨析。until直到；so that以便，为了；as far as就……而言；as long as只要。“you work hard”是“There is nothing to worry about”的条件，用as long as引导条件状语从句，故选D。
26．（2021河北）I love to listen to rock music ______ I am running.
A．while B．after C．since D．until
【答案】A
【解析】句意：我喜欢在跑步的时候听摇滚乐。考查连词辨析。while当……时；after在……之后；since自从；until直到。根据“I love to listen to rock music…I am running.”可知，此处强调在做某事时，用while+延续动词，故选A。
27．（2021南京）You need to practise speaking every day ______ you hope to improve your spoken English.
A．if B．although C．unless D．until
【答案】A
【解析】句意：如果你想提高你的英语口语，你需要每天练习口语。考查连词辨析。if如果；although尽管；unless除非；until直到。根据“You need to practise speaking every day”以及“you hope to improve your spoken English”可知，如果想提高英语口语，就需要每天练习口语，此处为if引导的条件状语从句。故选A。
28．（2021大连）Tom and Jerry really love each other ______ they fight a lot.
A．if B．though C．until D．because
【答案】B
【解析】句意：汤姆和杰瑞虽然经常吵架，但他们真的很相爱。考查连词。if如果；though虽然；until直到；because因为；根据空格前后句可知，两句之间有转折关系，应用though引导让步状语从句，故选B。
29．（2021梧州）We won’t believe it ______ we see it with our own eyes.
A．because B．unless C．if D．after
【答案】B
【解析】句意：除非亲眼所见，否则我们是不会相信的。考查连词。because因为；unless除非；if如果；after在……之后。根据语境可知，此处应用连词unless引导条件状语从句，故选B。
30．（2021贵阳）Jason will go to visit his grandparents ______ he finishes his work this weekend.
A．unless B．though C．if
【答案】C
【解析】句意：如果杰森这个周末完成工作，他将去看望他的祖父母。考查连词。unless除非；though虽然；if如果；根据句意可知， 前后句是假设的条件关系，用if引导条件状语从句，故选C。
31．（2021营口）We can get over the trouble ______ we depend on our own country.
A．as much as B．as far as C．as soon as D．as long as
【答案】D
【解析】句意：只要我们依靠自己的国家，我们就能克服困难。考查形容词短语和连词。as much as和……一样多；as far as和……一样远；as soon as一……就……，引导时间状语从句；as long as只要，引导条件状语从句。此处连接句子，用连词，结合句意，此处表示只要依靠我们自己的国家，我们就能克服困难，故选D。
32．（2021丹东）The teacher still spoke very loudly ______ he had a sore throat.
A．so that B．as soon as C．as long as D．even though
【答案】D
【解析】句意：即使老师喉咙痛，但说话还是很大声。考查连词辨析。so that以便于；as soon as一……就……；as long as只要；even though尽管。“The teacher still spoke very loudly”与“he had a sore throat”是让步关系，用even though引导让步状语从句，故选D。
33．（2021辽宁）Your dad has just fallen asleep. Don’t wake him up ______ it’s really necessary.
A．unless B．or C．and D．but
【答案】A
【解析】句意：你爸爸刚刚睡着了。除非真得有必要，否则不要把他叫醒。考查连词辨析。unless除非、如果不；or或者；and和；but但是。分析空前后句意可知，空处的连词是引导条件状语从句，应用unless，除非。故选A。
34．（2021辽宁）I don’t understand my teacher’s great love ______ I become a teacher myself.
A．if B．until C．since D．though
【答案】B
【解析】句意：直到我自己成为一名教师，我才明白老师的大爱。考查连词辨析。if如果；until直到；since自从；though虽然。结合句意理解，此句是until引导的时间状语从句，与前一句构成“not…until”句型，翻译成“直到……才”。故选B。