2023年中考英语总复习专题练习：介词用法（含解析）

2023中考英语总复习专题练习：介词用法附答案解析
1．—Taiwan lies ______ the southeast of China, and it is _____ the east of Fujian.
—OK, I want to visit it some day.
A．in; to B．on; too C．to; in D．to; on
2．It's very kind _______you to take the sick boy to the hospital.
A．for B．of C．about D．on
3．They usually go to the library _____ the lunch break.
A．against B．among C．during
4．The 5G services are provided in 50more cities, ________Beijing, Shanghai and Shenzhen.
A．besides B．beyond C．among
5．The number of people who died ____ the COVID-19 _____ reached over______ in the United States.
A．from; have; 100 thousands B．of; has; 100 thousand
C．from; has; 100 thousand D．of; have; 100 thousand
6．I love eating ice cream _________________ a hot day. There's nothing ________.
A．on, better B．in, good C．at, well D．to, best
7．It's very important us to make a plan before a new term begins.
A．of B．with C．by D．for
8．It is wise ______Linda to make up her mind _______to play an instrument.
A．for; learning B．for; to learn C．of; learning D．of; to learn
9．—As a volunteer in poor areas, his work goes ________ teaching.
—Yes, the teacher always thinks of the children first and takes good care of them.
A．beside B．beyond C．behind D．between
10．—Do you prefer tea ________ orange juice
—No, I'd rather drink tea with nothing in it.
A．to B．or C．in D．with
11．—Do you know what the voting woman is charged_____
—She has been found guilty ______ stealing a new-born baby from his mother.
A．with; for B．for; of C．of; with D．with; of
12．—Spend more time ________ your loved ones, because they won't be around you forever.
—I'll do that from now on. Thank you for your advice.
A．from B．with C．in D．on
13．—Could you give me some advice on learning English well
—Sure. But remember nothing can be learned hard work.
A．by B．without C．through
14．All the students went hiking ________Tom because he had to look after his little sister.
A．beside B．except C．besides D．including
15．In English, we say that sharing a problem is like cutting it in half. So you're halfway to solving a problem just _____ talking to someone about it.
A．with B．by C．in
16．The monkey was _____ the other side of the door and looked at Dr. Morgan ____ the keyhole.
A．on; across B．on; through C．in; through D．in; across
17．Guangdong Province is ________ the east of Guangxi Province.
A．to B．in C．on D．at
18．Vincent sometimes sits ________ the river and listens to music.
A．on B．by C．over D．under
19．We have history class ________ three o'clock every Friday afternoon.
A．at B．on C．in D．to
20．The traditional Chinese lunar calendar divides a year into 24 solar terms. Xiaoman (a little full) usually falls _______ May.
A．in B．at C．on D．to
21．Mingming will have a class meeting _______ 3:30 this afternoon.
A．on B．in C．at
22．—Ms. Huang, what would you like ________ your afternoon tea
—Just a cup of coffee ________ any sugar or milk.
A．for, without B．to; without C．for, with D．to; with
23．I usually get up ________ 6:30 in the morning. And you
A．at B．on C．in D．for
24．200 families won 2021 Jiangsu Most Beautiful Families Award this year, and 15 families from Taizhou were ________ them.
A．among B．between C．over D．on
25．Our English teacher came into the classroom ________ a smile on her face.
A．in B．over C．with D．against
26．We need to guard ________ any possible danger around us.
A．for B．over C．with D．against
27．We're glad to see that Shenzhou-14 rose into the sky ________ June 5, 2022.
A．in B．at C．on D．to
28．________ May 2022, we held many events to celebrate the 100th birthday of the Communist Youth League of China.
A．At B．In C．On
29．My cousin Lisa is going to get married ________ John on New Year's Day. They're both _________ their twenties.
A．to; in B．with; in C．to; at
30．Maria went skating with her friends in the park ________ a sunny morning.
A．at B．in C．on
31．—I'm going to Disneyland______ two weeks.
—Wow, sounds like fun！
A．to B．in C．at D．on
32．You can only achieve success __________ hard work.
A．across B．above C．through D．into
33．With the teachers' help, I have realized I'm not the center ________ the world and learned to put myself in others' shoes.
A．of B．by C．up D．under
34．—How do you relax in your free time
—________ doing sports and listening to music.
A．At B．On C．In D．By
35．I could tell you____________ the look on her face that something exciting had happened.
A．by B．against C．about D．on
36．—The 24th Winter Olympics was hosted in Beijing 20: 04 on Feb 4th, 2022.
—Great! I to have mascots Bing Dwen Dwen and Shuey Rhon Rhon.
A．at, can't wait B．on, can't help C．in, can't afford
37．Don't worry, Mom. I will get home _______ 15 minutes.
A． from B．in C．for D．at
38．The movie star thanked her fans for always being her through thick and thin.
A．past B．behind C．without D．against
39．Sansha, a beautiful city, lies ____________ the south of China.
A．in B．on C．to
40．—In China，driving after drinking .
—You are right. That's the law.
A．is not allowed; against B．was not allowed; with
C．are not allowed; for D．were not allowed; along
41．Space Day of China falls________ April 24th every year.
A．on B．by C．at D．in
42．The Communist Party of China was founded________ July 1st, 1921.
A．in B．on C．at D．/
43．I often go to school ________ foot.
A．in B．by C．on D．at
44．Our hometown is a beautiful city ________ hundreds of lakes.
A．at B．on C．with D．by
45．I eat rice beef and potatoes. It's delicious.
A．in B．on C．with D．for
46．Thanks to the video Visiting the World Online, we can enjoy the sights ________ leaving home.
A．with B．by C．without
47．We'll cause more pollution ____________ _we find ways to recycle more rubbish.
A．unless B．if C．although
48．Big sale! We have T-shirts __________white __________only ＄6.
A．in; for B．of; for C．in; at
49．I often help my parents with housework Sundays.
A．on B．in C．at
2023中考英语总复习专题练习：介词用法
答案解析
1．—Taiwan lies ______ the southeast of China, and it is _____ the east of Fujian.
—OK, I want to visit it some day.
A．in; to B．on; too C．to; in D．to; on
答案：A
解析：句意：——台湾位于中国东南部，福建东部。——好的，我想有一天去看看。in the…of…，表示在其内部的某方位；on the…of…，表示在其外且接壤的某方位。to the…of…，表示在其外的某方位。根据地理常识，台湾是在中国领域内的东南部，故用in。而在福建省省外的东部，隔海不接壤，故用to，故选A。
2．It's very kind _______you to take the sick boy to the hospital.
A．for B．of C．about D．on
答案：B
解析：句意：你把生病的孩子送到医院真是太好了。It's+adj+for sb+to do sth，做某事对某人来说是怎样的，其中形容词修饰事情；It's+adj+of sb+to do sth，做某事对某人来说是怎样的，其中形容词修饰人的内在品质。根据kind，可知是指人的品质，故选B。
3．They usually go to the library _____ the lunch break.
A．against B．among C．during
答案：C
解析：句意：他们通常在午休时期去读书馆。against反对，违反 ；among在……中间（多指人和事物）；during在......期间（多跟时间段）。根据the lunch break可知，表示时间段。故选C。
4．The 5G services are provided in 50more cities, ________Beijing, Shanghai and Shenzhen.
A．besides B．beyond C．among
答案：A
解析：句意：除北京、上海和深圳外，还有50多个城市提供5G服务。A.除了，B.超过，C.在……之间。根据 The 5G services are provided in 50more cities50多个城市提供5G服务 ，可知应是除北京、上海和深圳外，还有五十个城市，应用介词besides。故选A。
5．The number of people who died ____ the COVID-19 _____ reached over______ in the
United States.
A．from; have; 100 thousands B．of; has; 100 thousand
C．from; has; 100 thousand D．of; have; 100 thousand
答案：B
解析：句意：美国死于COVID2019冠状病毒疾病的人数已经达到10万以上。die from死于（某种原因，不包括疾病、过度悲伤等）；die of死于（疾病、过度悲伤等）。第一空根据 the COVID-19 COVID2019冠状病毒疾病，可知是疾病，应用短语died of；第二空主语根据The number of people人数，可知主语为单数，助动词应用has；第三空根据名词thousand前有基数词100，可知用thousand单数形式即可。故选B。
6．I love eating ice cream _________________ a hot day. There's nothing ________.
A．on, better B．in, good C．at, well D．to, best
答案：A
解析：句意： 我喜欢在大热天吃冰淇淋，没有什么比这更好的了。表示在具体的一天用介词on，nothing+比较级=最高级，good的比较级是better，故选A。
7．It's very important us to make a plan before a new term begins.
A．of B．with C．by D．for
答案：D
解析：句意：对我们而言，在新学期开始之前制定计划是很重要的。of，……的；with和……一起；for为了；by通过。It's+形容词+for/of sb to do sth，对某人来说做某事是……的，固定句型，当其前形容词是描述事物特征时，用for，当其前的形容词是描述人的品行特征时，如nice，kind clever，foolish，smart都是形容人品行特征的的，用of，此处描述制定计划这件事很重要，表示事物特征，空格处应用for，故答案选D。
8．It is wise ______Linda to make up her mind _______to play an instrument.
A．for; learning B．for; to learn C．of; learning D．of; to learn
答案：D
解析：句意：琳达下决心学弹乐器是明智的。由句子结构可知，不定式作真正的主语，放在句末，用it作形式主语。要用固定句型：It's + adj +for/of sb to do sth.前面的形容词来描述不定式时，要用介词for；形容词说明人时，要用介词of。这里的形容词wise是形容人的性格特征的，要用It's + adj +of sb to do sth.，故选D。
9．—As a volunteer in poor areas, his work goes ________ teaching.
—Yes, the teacher always thinks of the children first and takes good care of them.
A．beside B．beyond C．behind D．between
答案：B
解析：句意：作为贫穷地区的一名志愿者，他的工作超出教书。——是的，老师总是先考虑学生并且好好照顾他们。go beyond，超出，固定搭配。A 除了，C 在……后面，D 在……之间，故选B。
10．—Do you prefer tea ________ orange juice
—No, I'd rather drink tea with nothing in it.
A．to B．or C．in D．with
答案：D
解析：句意：你更喜欢放里桔子汁的茶吗？——不，我宁愿喝没有放东西的茶。根据 I'd rather drink tea with nothing in it.可知上句是否更喜欢带有桔子汁的茶。此处用with，带有，介词，作后置定语。故选D。
11．—Do you know what the voting woman is charged_____
—She has been found guilty ______ stealing a new-born baby from his mother.
A．with; for B．for; of C．of; with D．with; of
答案：D
解析：句意：——你知道那位正在投票的女人被指控什么吗？—— 她被发现从一个新生婴儿妈妈那里偷孩子。be charged with，被控告、被指控，固定搭配；（be）guilty of，犯……罪，固定搭配。
12．—Spend more time ________ your loved ones, because they won't be around you forever.
—I'll do that from now on. Thank you for your advice.
A．from B．with C．in D．on
答案：B
解析：句意：——多跟你喜欢的人在一起，因为他们不会永远在你身边。——从现在起我会的。谢谢你的建议。A from 来自……；B with 和……一起，表伴随；C in 在……里面；D on 在……上面；根据be around，可知是陪伴，用with，表伴随，故选B。
13．—Could you give me some advice on learning English well
—Sure. But remember nothing can be learned hard work.
A．by B．without C．through
答案：B
解析：句意：——你能给我一些关于学好英语的建议吗？ ——当然。但是记住，没有努力，什么都学不到。A. by通过；B. without没有；C. through通过。根据句子前面的nothing和后面的hard work，可知双否表示肯定，应用介词without，表“没有努力，什么都学不到”。故选B。
14．All the students went hiking ________Tom because he had to look after his little sister.
A．beside B．except C．besides D．including
答案：B
解析：句意：除了汤姆之外所有的同学都去远足了，因为他必须照看他妹妹。A.在……旁边；B.除了；C.除……之外；D.包括。根据 he had to look after his little sister，可知汤姆没有去，因此汤姆不在远足的人里面，即不包含关系，besides是包含描述对象的，except是不包含描述对象的，故选B。
15．In English, we say that sharing a problem is like cutting it in half. So you're halfway to solving a problem just _____ talking to someone about it.
A．with B．by C．in
答案：B
解析：句意：在英语中，我们说分享一个问题就像把它切成两份。所以你只要和别人谈谈问题就已经解决了一半。with和…… 一起，by通过，in在……里。此处表示方式，by doing sth通过做某事，故选B。
16．The monkey was _____ the other side of the door and looked at Dr. Morgan ____ the keyhole.
A．on; across B．on; through C．in; through D．in; across
答案：B
解析：句意：猴子在门的另一边，通过钥匙孔看Morgan博士。on在上面，in在里面，through从中穿过/透过，across从表面穿过。第一空根据固定搭配on the other side在另一边，可知应用介词on；第二空根据 keyhole 钥匙孔，可知是从中穿过，应用介词through。故选B。
17．Guangdong Province is ________ the east of Guangxi Province.
A．to B．in C．on D．at
答案：C
解析：句意：广东省在广西省的东部。in the east of 在…….的东部 （内部）；on the east of 在……的东边 （外部接壤）；to the east of 在……的北方 （外部不接壤）。广东不属于广西，所以不用in，但是广东和广西接壤，所以用on，故选C。
18．Vincent sometimes sits ________ the river and listens to music.
A．on B．by C．over D．under
答案：B
解析：句意：Vincent有时坐在河边，听音乐。A、在……上面（有接触面），B、在……旁边，C、在……上方（无接触面），D、在……下面。sit by the river表示“坐在河边”，因此空格处应用介词 by，故答案为B。
19．We have history class ________ three o'clock every Friday afternoon.
A．at B．on C．in D．to
答案：A
解析：句意：我们每周五下午三点钟上历史课。ABC三个选项后接时间时，都表示“在……时”，但用法有区分：at后接时间点，on后接星期或具体的时间，in后接早中晚，月份，季节，年份等。选项D、到。three o'clock是时间点，用时间介词at，故答案为A。
20．The traditional Chinese lunar calendar divides a year into 24 solar terms. Xiaoman (a little full) usually falls _______ May.
A．in B．at C．on D．to
答案：A
解析：句意：中国传统的阴历将一年分为24个节气。小满通常在五月。in后加某年某月某季节；at加具体时刻；on后具体的某一天；to到。May表示“五月”，应用介词in，故选A。
21．Mingming will have a class meeting _______ 3:30 this afternoon.
A．on B．in C．at
答案：C
解析：句意：明明今天下午3:30有个班会。at+具体时间，在几点钟，in+年，月，in某年某月；on+星期，节日，具体日期，或形容词+morning/afternoon/night，在某天或在某个夜晚，根据3:30是具体时间，可知介词用at，故选C。
22．—Ms. Huang, what would you like ________ your afternoon tea
—Just a cup of coffee ________ any sugar or milk.
A．for, without B．to; without C．for, with D．to; with
答案：A
解析：句意：——黄小姐，您的下午茶要喝点什么？——只要一杯咖啡，不加糖和牛奶。for为了；to到；without没有；with带有。for+某一顿餐食，固定搭配，所以第一个用for。any用于否定句，故第二空填否定介词without，故选A。
23．I usually get up ________ 6:30 in the morning. And you
A．at B．on C．in D．for
答案：A
解析：句意：我通常在早上六点半起床。你呢？at用在具体的时间点前面；on用在具体的某天或某天的上午，下午或晚上前面；in用在年份，季节，月份，上午，下午或晚上前面；for用在时间段前；根据6:30可知这里是用在具体的时间点前，用at，故答案为A。
24．200 families won 2021 Jiangsu Most Beautiful Families Award this year, and 15 families from Taizhou were ________ them.
A．among B．between C．over D．on
答案：A
解析：句意：200个家庭获得了2021年江苏省最美家庭奖，其中有15个来自泰州的家庭。among在……当中（用于三者或三者以上）；between在两只之间；over在……之上，超过；on在……上面；根据 200 families 可知是指多少之中，用among ，故答案为A。
25．Our English teacher came into the classroom ________ a smile on her face.
A．in B．over C．with D．against
答案：C
解析：句意：我们的英语老师面带微笑进入了房间。A.在......里面；B.在......正上方；C.带着；D.反对。a smile一个微笑；on her face在她的脸上；Our English teacher came into the classroom我们的英语老师进入教室，结合选项可知是我们的英语老师脸上带着微笑进入了房间符合题意，故选C。
26．We need to guard ________ any possible danger around us.
A．for B．over C．with D．against
答案：D
解析：句意：我们需要提防周围任何可能的危险。A.为了；B.在......正上方；C.和；D.反对。guard保护，any possible danger around us我们周围任何可能的危险，结合选项可知是反对任何危险符合题意，故选D。
27．We're glad to see that Shenzhou-14 rose into the sky ________ June 5, 2022.
A．in B．at C．on D．to
答案：C
解析：句意：我们高兴地看到，神舟十四号于2022年6月5日飞上了天。in用在表示年份，月份，季节，上午，下午和晚上的名词前；at用在具体的时间点前；on用在具体的某一天或某一天的上午，下午或晚上的名词前；to用时间点前时表示“差”。根据空后面的June 5, 2022.可知是具体的某一天前，用on，故答案为C。
28．________ May 2022, we held many events to celebrate the 100th birthday of the Communist Youth League of China.
A．At B．In C．On
答案：B
解析：句意：在2022年5月，我们举办了许多活动来庆祝中国共产主义青年团成立100周年。at+时间点表示在几点；in+月份表示在几月；on+几月几日表示在几月几日。May 5月，指的是月份，所以用in，故选B。
29．My cousin Lisa is going to get married ________ John on New Year's Day. They're both _________ their twenties.
A．to; in B．with; in C．to; at
答案：A
解析：句意：我的堂姐丽莎将在元旦和约翰结婚。他们都二十几岁。get married to sb.和某人结婚，固定搭配；in one's+表示整数的基数词复数，表示在某人几十岁左右，固定搭配，故选A。
30．Maria went skating with her friends in the park ________ a sunny morning.
A．at B．in C．on
答案：C
解析：句意：在一个阳光明媚的早晨，玛丽亚和她的朋友们去公园滑冰。表示时间时，at后加具体时间点；in加月和年；on加具体某一天或者某一天的早、中、晚。根据a sunny morning，可知是某一天的早上，故选C。
31．—I'm going to Disneyland______ two weeks.
—Wow, sounds like fun！
A．to B．in C．at D．on
答案：B
解析：句意：——两周后我要去迪斯尼乐园。——哇，听起来很有趣。to到，表示时间，in后接年代、月份、季节等，at后接钟点、年龄或某些节日前，on后接星期、日期、节日前等，I'm going to 我要去……，现在进行时表示将来，由此可知，in+一段时间，用于一般将来，故选：B。
32．You can only achieve success __________ hard work.
A．across B．above C．through D．into
答案：C
解析：句意： 你只有通过努力才能获得成功。 A.穿过，从物体表面穿过；B.在……上方，超过；C.通过；D.进入，到……里面。根据 hard work 可知，此处指通过努力获得成功，用介词through。故选C。
33．With the teachers' help, I have realized I'm not the center ________ the world and learned to put myself in others' shoes.
A．of B．by C．up D．under
答案：A
解析：句意：在老师的帮助下，我意识到自己不是世界的中心，学会了设身处地为别人着想。of……的，表示所属关系，by被，通过，up向上，under在……下面，固定词组the center of the world世界的中心。故选A。
34．—How do you relax in your free time
—________ doing sports and listening to music.
A．At B．On C．In D．By
答案：D
解析：句意：在你空闲时间你是怎样放松的？——通过做运动和听音乐。A.在；B.在......上面；C.在......里面；D.通过。根据问句How do you relax in your free time 在你空闲时间你是怎样放松的，可知回答用by+动词ing，故选D。
35．I could tell you____________ the look on her face that something exciting had happened.
A．by B．against C．about D．on
答案：A
解析：句意：从她脸上的表情我可以告诉你发生了令人兴奋的事情。A.通过，经过；B.反对；C.关于；D.在……上面。根据 the look on her face 可知，从她脸上的表情我可以告诉你发生了令人兴奋的事情。故选A。
36．—The 24th Winter Olympics was hosted in Beijing 20: 04 on Feb 4th, 2022.
—Great! I to have mascots Bing Dwen Dwen and Shuey Rhon Rhon.
A．at, can't wait B．on, can't help C．in, can't afford
答案：A
解析：句意：——第24届冬奥会于2022年2月4日20时04分在北京举行。——太棒了！我等不及要有吉祥物冰墩墩和雪容融了。at用在具体的时间点前面。on用在具体的某天或某一天的上午，下午或晚上等名词前；in用在表示年份，月份，季节或上午，下午或晚上等名词前；can't wait迫不及待，后跟不定式；can't help禁不住做某事，后跟动名词；can't afford负担不起；后跟不定式；根据空后面的20: 04，可知是具体的时间，用at；根据句意可知第二个空为迫不及待，故答案为A。
37．Don't worry, Mom. I will get home _______ 15 minutes.
A． from B．in C．for D．at
答案：B
解析：句意：别担心，妈妈。我15分钟后会到家。from从；in后跟时间段表示……之后，与一般将来时连用；for后跟识记段，表示持续多久；at在，不跟时间段。关键句I will get home 可知句子是一般将来时，用in+时间段，故答案为B。
38．The movie star thanked her fans for always being her through thick and thin.
A．past B．behind C．without D．against
答案：B
解析：句意：这位电影明星感谢她的影迷们在任何情况下都支持她。past过去的；behind在后面；without没有；against反对；根据 The movie star thanked her fans 这个电影明星感谢她的粉丝，可知这里是感谢粉丝在任何情况下都支持她。(be)behind sb，支持某人，固定搭配，故答案为B。
39．Sansha, a beautiful city, lies ____________ the south of China.
A．in B．on C．to
答案：A
解析：句意：三沙，一个美丽的城市，位于中国的南部。in the+方位名词，指的是小范围在一个大范围的里面，表示在某范围之内'，强调两者的包含关系。on the+方位名词，指的是一个范围紧挨着另一个范围，表示'两地接壤'，强调两者为相邻关系。to the+方位名词，指的是一个范围和另一个范围之间隔段距离，表示'在某范围之外"，强调两者是远离关系。根据Sansha，a beautiful city可知三沙是中国的一个美丽的城市，故选：A。
40．—In China，driving after drinking .
—You are right. That's the law.
A．is not allowed; against B．was not allowed; with
C．are not allowed; for D．were not allowed; along
答案：A
解析：句意：——在中国，酒后驾车是不允许的。——你是对的。那是违法的。主语driving after drinking是动词allow的承受者，句子描述的是事实，用一般现在时的被动语态am/is/are +过去分词，动名词作主语指单数，be动词用is；根据常识，可知酒后驾车是违背法律的。against介词，违背。故答案为A。
41．Space Day of China falls________ April 24th every year.
A．on B．by C．at D．in
答案：A
解析：句意：中国的太空日是每年的4月24日。on用在具体的某一天；by在……之前；at在，后跟具体的时间点；in后跟连续的一段较长的时间前，此处指具体的一天，要用介词on，故选A。
42．The Communist Party of China was founded________ July 1st, 1921.
A．in B．on C．at D．/
答案：B
解析：句意： 中国共产党在1921年7月1日成立。 表示时间的某一点、某一时刻或年龄等用at。 泛指一般意义的上午、下午或晚上以及月或年等较长的时间，一般用in。 若表示星期几或某一特定的日期或某个特定日期的上午，下午或者晚上，则用on。此处空后是某一特定日期，用on，故选B。
43．I often go to school ________ foot.
A．in B．by C．on D．at
答案：C
解析：句意：我经常步行去学校。A.在……里面；B.通过；C.在……上面；D.在。on foot步行，固定短语，故选C。
44．Our hometown is a beautiful city ________ hundreds of lakes.
A．at B．on C．with D．by
答案：C
解析：句意：我们的家乡是一个拥有数百个湖泊的美丽城市。A.at在；B.on在……上；C.with具有；D.by到……为止。根据表语a beautiful city一个美丽的城市和可数名词复数hundreds of lakes数百个湖泊，可知是从属关系，有许多湖泊的城市，应用介词with。故选C。
45．I eat rice beef and potatoes. It's delicious.
A．in B．on C．with D．for
答案：C
解析：句意：我吃米饭时和牛肉土豆一起吃。这样吃很好吃。in在……里；on在……上；with和……一起；for为了。根据语境可知，此处指的是“吃饭时连同牛肉土豆一起吃”，故应用介词with。故选C。
46．Thanks to the video Visiting the World Online, we can enjoy the sights ________ leaving home.
A．with B．by C．without
答案：C
解析：句意：多亏了在线访问世界的视频，我们可以在家里欣赏风景。A.和，伴随；B.在旁边；C.没有，不……。根据Thanks to the video Visiting the World Online…多亏了在线访问世界的视频……可知可在不离开家的情况下看风景，应用介词without。故选C。
47．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：我们会造成更多的污染，除非我们找到循环利用更多垃圾的方法。A.除非，B.如果，C.尽管。根据 We'll cause more pollution我们会造成更多的污染，可知是除非我们找到循环利用更多垃圾的方法，应用连词unless。故选A。
48．Big sale! We have T-shirts __________white __________only ＄6.
A．in; for B．of; for C．in; at
答案：A
解析：句意：大减价！我们有白色的t恤衫只要6美元。in 在……内；穿着；带……颜色的；for对；为了； 关于；以……为价格；of属于；……的；at在；向，朝；第一个空根据后面的的white可知这里是“带……颜色的”，用in；第二个空根据后面的only ＄6.可知是表示的价格，用for，故答案为A。
49．I often help my parents with housework Sundays.
A．on B．in C．at
答案：A
解析：句意：在周日我经常帮助我父母做家务。on在......上，用在具体日期的名词前，或用在星期天的前面，根据Sundays，可知此处用介词on，故选A。