(共78张PPT)
Unit 7 Teenagers should be allowed to choose their own clothes.
九年级
人教版
全
语法讲练及解析
【知识导图】
【要点拓展】
1．祈使句变为被动句时，用“ 宾语 过去分词”句式；否定祈使句变为被动句时，用“Don＇t let＋宾语＋be＋过去分词”句式。
Keep the book on the desk.→Let the book be kept on the desk.
Don't put the knife here.→Don't let the knife be put here.
2．主动形式表示被动意义的情况
（1）连系动词如smell、taste、feel、sound等，可以用主动形式表示被动意义。The food smells delicious.食物闻起来很美味。
（2）表示主语特征、状态的动词如wash、write、sell、read、open、cut、keep、lock、clean等，可以用主动形式表示被动意义。
This kind of pens sells well.这种钢笔卖得好。
（3）表示开始、结束类的动词如start、begin、close、finish、stop、end等，可以用主动形式表示被动意义。They ended the game with a score of 78-50．他们以78比50结束了比赛。
（4）在表示“需要”意义的need、want、require等词的后面加动名词，是主动形式表示被动意义，其含义相当于动词不定式的被动形式。
This desk needs repairing be repaired）.这张课桌需要修理。
Your coat needs washing be washed）.你的大衣需要洗一下。
（5）形容词 worth后跟动名词的主动形式表示被动意义。
These books are worth reading.这些书值得一读。
The museum is worth visiting.那个博物馆值得参观。
【奇思巧计】
【同步检测】
一、单项选择
1. - Teachers should___carefully. - I think so. It's a good way to study well.
A. listen to B. be listened to C. be listening to
【答案】B
【详解】句意：-认真听老师讲课。-我想是的。这是一个很好的学习方法。
考查时态和语态。listen to听；be listened to 被聆听；be listening to 正在听。根据“It＇s a good way to study well.”可知，此处表示学习的方法，应是老师被聆听，主语teachers与谓语listen to之间是被动关系，因此用被动语态，故选B。
2. This Maths problem __out by Tom.
A. can be easily work B. can easily be worked
C.can is easily worked D. can easily worked
【答案】B
【详解】句意：汤姆很容易算出这道数学题。
考查被动语态。由题中“by Tom”可知此处应使用被动语态；can之后要使用be动词原形；easily为副词，放在can和be之间。故选B。
3. The dictionary mustn't ______from the library .
A. take away B. taken away C. are taken away D. be taken away
【答案】D
【详解】句意：字典禁止被带离图书馆。
考查被动语态。根据“The dictionary mustn＇t...from the library.”可知，此处 dictionary 和 take away 构成逻辑上的动宾关系，因此此处应用被动语态，结合mustn＇t可知，此处是含情态动词的被动语态，结构为“mustn＇t be done”。故选D。
4.--Mrs Watson, how long can the books from the school library _____
-At most two weeks.
A. borrow B. keep C. be borrowed D. he kept
【答案】D
【详解】句意：-沃森夫人，从校图书馆借的书可以保留多久？-最多两周。
考查延续性动词与非延续性动词的辨析和语态。borrow借（瞬间动词）；keep持有（延续性动词）；be borrowed被借走；be kept被持有。根据主语“books”与动词keep／borrow是被动关系，要用被动语态表示“书被借”，结构为be＋过去分词；并结合“How long”表示为一段时间，所以动词要用延续性动词，故选D。
5.Attention, please! All the mobile phones ____ before the meeting starts.
A. may turn off B. must tum off C. must be turned off
【答案】C
【详解】句意：请注意！所有的手机在会议开始之前都必须关闭。
考查被动语态。根据“before the meeting starts”可知，此处强调的是必须关闭手机，应用情态动词must。主语mobile phones和谓语动词 turn off之间是被动关系，应用被动语态。故选C。
6.--Teenagers should____go swimming by themselves. -So it is.
A. not allowed B. be not allowed to C. not be allowed to D. not be allowed
【答案】C
【详解】句意：-不应该允许青少年自己去游泳。-的确如此。
考查情态动词的被动语态。根据“Teenagers”以及动词“allow”可知，此处表示被动，should是情态动词，其被动语态的谓语动词构成为“should be done”，否定形式为should not be done，因此排除AB选项；be not allowed to do sth.意为“不被允许做某事”，固定用法，因此排除D选项。故选C。
7. -I think our classroom must ____ every day. -Yes, but we can do it after school.
A. clean B. cleaned C. be cleaning D. be cleaned
【答案】D
【详解】句意：-我认为我们的教室必须每天被打扫。-是的，但是我们可以在放学后打扫。
考查被动语态。主语 our classroom 和动词 clean之间是被动关系，空格前有情态动词must，被动语态为“主语＋情态动词＋be＋过去分词（＋其他）”。故选D。
8. Do you think teenagers should be ____away from the internet
A. kept B. keeps C. keeping
【答案】A
【详解】句意：你认为青少年应该远离互联网吗？
考查情态动词的被动语态。根据“should be”可知，本句使用情态动词的被动语态，构成为情态动词＋be done，因此空缺处应填过去分词形式。故选A。
9. -Do you know where Kate is
--She ____to Kangkang's birthday party. But I'm not sure.
A.might invite B. must be invited C.could be invited
【答案】C
【详解】句意：-你知道凯特在哪里吗？-她可能被邀请去参加康康的生日聚会了。但我不确定。
考查情态动词的被动语态。根据“But I＇m not sure.”可知，回话的人不确定Kate在哪儿。could表示推测，主语she和谓语动词invite“邀请”之间存在被动关系，应用被动语态形式。could be invited“可能被邀请”；might invite“可能邀请”；must be invited“一定被邀请”。故选C。
10. -Passengers _____ if they do something that influences the normal driving of the driver.
-Yes, safety comes first. People should obey the traffic rules.
A. punish B. will punish C. should be punished
【答案】C
【详解】句意：-如果乘客做了影响司机正常驾驶的事情，应该受到惩罚。-是的，安全第一。人们
应该遵守交通规则。
考查被动语态。根据“Passengers...if they do something that influences the normal driving”可知，若乘客影响驾驶，应该被惩罚，即“Passengers”与“punish”之间是被动关系，所以是含有情态动词should的被动语态。故选C。
11. -Children under 12 should not drive e-bikes.
-That's true. We are also advised _____helmets(头盔)to keep safe.
A. allow; wearing B. be allowed to; to wear
C.allowed to; to wear D. be allowed to; wearing
【答案】B
【详解】句意：-12岁以下儿童不应该被允许骑电动车。-那是真的。我们也建议戴头盔来确保安全。考查被动语态和动词短语。Children 与allow之间是被动关系，因此用被动语态，be allowed to do sth；be advised to do sth 表示“被建议做某事”。故选B。
12. Boys and girls, don't forget your report. It _____ today.
A. can't finish B. can't be finished
C. mustn't finish D.must be finished
【答案】D
【详解】句意：男孩女孩们，别忘了你们的报告。今天必须完成。
考查含有情态动词的被动语态。can＇t finish不能完成；can＇t be finished 不能被完成；mustn＇t finish禁止完成；must be finished 必须被完成。根据“don＇t forget your report.It...today.”可知，此处是指报告今天必须被完成，主语It指代“report”，与finish之间是动宾关系，因此用被动语态。故选D。
13. All of our schoolbags _____behind chairs according to our class rule.
A. must be put B. must put C.must be putted D. can be put
【答案】A
【详解】句意：根据我们的班规，我们所有的书包都必须放在椅子后面。
考查情态动词辨析及被动语态。can可以；must必须。根据“according to our class rule”可知此处需要表达的是“必须”，又主语为“All of our schoolbags”，因此动词需使用被动语态，其结构为be done，put“放置”的过去分词为put。故选A。
14. _____your homework _____on time - Yes, of course.
A. Must be; handed in B. Must; be handed in
C. Need; to be handed in D. Need; hand in
【答案】B
【详解】句意：-你的作业必须要按时交吗？-是的，当然。
考查含有情态动词的被动语态。主语your homework和谓语hand in“上交”之间是被动关系，故此处用含有情态动词的被动语态：情态动词＋be done，变疑问句时把情态动词放主语之前，其他不变。此处是询问是否必须交作业，应用must。故选B。
15. -Can I take this magazine away, Mr.Sun
-No. It _____out of the reading room.
A. can't be taken B. can be taken C. can't take
【答案】A
【详解】句意：-孙先生，我可以拿走这本杂志吗？-不可以。它不能带出阅览室。
考查被动语态。根据题干，可知主语是动作的承受者，用被动语态。由问句“Can I take this magazine away，Mr.Sun？”可知回答也用can。由“No”可知，用否定形式can＇t be＋过去分词。故选A。
二、用所给单词的正确形式填空
16. I think teenagers should be _____(allow) to make their own decisions.
【答案】allowed
【详解】句意：我认为青少年应该被允许自己做决定。be allowed to do sth.“被允许做某事”。故填allowed。
17. In order to make Yongzhou City more beautiful, trees and flowers should ____(plant)every year.
【答案】be planted
【详解】句意：为了让用永州更漂亮，每年应该种树和花。主语trees and flowers与plant是动宾关系，因此是含情态动词的被动语态。故填 be planted。
18. The lights in the classroom should _____(tum) off when there is nobody in it.
【答案】be turned
【详解】句意：教室里没有人时，应该把灯关掉。turn off“关掉”，动词原形。主语the lights和谓语动词turnoff之间是被动关系，句子应用含有情态动词的被动语态：情态动词＋be＋过去分词，动词turn的过去分词为turned。故填 be turned。
19. To learn English well, students should be _____(encourage) to speak as much as possible.
【答案】encouraged
【详解】句意：为了学好英语，应该鼓励学生尽可能多说。根据“students should be”可知，此处为被动语态，构成为：be＋动词过去分词，结合句意可知，此处应表达“学生应该被鼓励”，encourage“鼓励”，动词，此处应用过去分词形式。故填encouraged。
20. The task must _____(finish) today, or you'll be punished.
【答案】be finished
【详解】句意：这项任务今天必须完成，否则你会受到惩罚的。finish“完成”，主语The task 与动词 finish之间是动宾关系，所以用被动语态，结合must可知，此处的结构是：must be done。故填be finished。
21.Silk made by hand can _____(sell) at a good price.
【答案】be sold
【详解】句意：手工丝绸可以卖到好价钱。主语“Silk made by hand”与动词sell之间是动宾关系，此处是含情态动词的被动语态，其结构为can be done，sell的过去分词形式sold。故填be sold。
22. My grandmother is ill. A doctor must _____(send) for at once.
【答案】be sent
【详解】句意：我奶奶病了，必须马上请医生来。这里的主语A doctor与动词send之间是被动关系，因此应该用被动语态，这里含有must，因此是含有情态动词的被动语态，其结构是：must be＋动词的过去分词；send的过去分词为sent。故填be sent。
23.Children should _____(educate) to respect and help other people.
【答案】be educated
【详解】句意：应该教育孩子尊重和帮助他人。主语children与动词educate之间是被动关系，根据should可知，此处用含有情态动词的被动语态 should be done的结构，故填be educated。
24. Balzac and Tang Xianzha can be _____(regard) as models.
【答案】regarded
【详解】句意：巴尔扎克和汤显札被认为是典范。regard“认为”，结合句意，主语Balzac and Tang Xianzha与谓语regard之间是被动关系，因此用被动语态，be regarded as“被认为是”。故填regarded。
25. Children should _____(teach) how to get on well with others.
【答案】be taught
【详解】句意：应该教孩子们如何与他人和睦相处。主语children是谓语动词teach的承受者，结合“should”可知，此处用含情态动词的被动语态（should be done），teach的过去分词是taught。故填be taught。
三、根据首字母填空
26.Kids should be e _____to accept breaking bad news from a young age. It's as important as what they could learn from books.
【答案】（e）ncouraged
【详解】句意：应该鼓励孩子从小就接受突发的坏消息。这和他们能从书中学到的东西一样重要。根据“toaccept breaking bad news from a young age”可知是应该鼓励孩子们接受突发的坏消息，be encouraged to dosth.“被鼓励做某事”。故填（e）ncouraged。
27.He suggested that our class should be d _____into five groups.
【答案】（d）ivided
【详解】句意：他建议我们班应该被分成五个组。根据“into five groups”及首字母d可知此处应是表示“被分成五个组”，应用动词divide的过去分词divided与be动词构成被动语态。故填（d）ivided。
28. Teenagers should be a_____ to choose their own clothes.
【答案】（a）llowed
【详解】句意：应该允许青少年选择他们自己的衣服。根据“Teenagers should be...to choose their own clothes”及首字母可知，学生应该被允许选择自己的衣服，be allowed to do sth“被允许做某事”，故填(a)llowed。
29.Mobile phones should be k _____ off during the class.
【答案】（k）ept
【详解】句意：上课期间移动电话应当被关闭。动词短语keep off表示“使......不接近”，句中主语Mobile phones与谓语 keep off之间是被动关系，用被动语态。故此处用keep的过去分词kept，与be动词构成被动结构。故填（k）ept。
30. Don't worry! I think the problem can be s _____easily without much trouble.
【答案】（s）olved
【详解】句意：不要担心！我想问题一定能被容易地解决，不会有太多麻烦。根据“Don＇t worry”和“the problemcan be...”可知本题考查单词solve“解决”，主语 the problem和谓语动词solve是逻辑上的动宾关系，应用被动语态，其谓语结构为 “be＋动词过去分词”，故填（s）olved。
31. Students should finish their homework on time.(改为被动语态)
Their homework ____be ____by students on time.
【答案】 should finished
【详解】句意：学生应该按时完成作业。含有情态动词的被动语态是：情态动词 ＋be＋done，finish的过去分
词是finished，故填 should；finished。
32. The students should sweep the floor every day.(改为被动语态)
The floor should _____ ______by the students every day.
【答案】 be swept
【详解】句意：学生们应该每天扫地。分析句子可知，原句含有情态动词 should，因此要改为含有情态动词should的被动语态，结构为：情态动词should＋be＋动词的过去分词；谓语动词sweep的过去分词是swept。故填be；swept。
33. Students can't take magazines out of the reading room without permission.(改为被动语态)
Magazines _____ ______ ______out of the reading room without permission by students.
【答案】can＇t be taken
【详解】句意：学生未经允许不能把杂志带出阅览室。考查情态动词的被动语态。原句含有 can＇t，其被动应该为can＇t be done。take的过去分词是taken。故填 can＇t；be；taken。
34. Teenagers should be allowed to choose their own clothes. (改为一般疑问句)
_____teenagers _____allowed to choose their own clothes
【答案】 Should be
【详解】句意：青少年应该被允许选择他们自己的衣服。原句是含有情态动词的被动语态，变一般疑问句时，情态动词要放在主语前，主语后跟be done。故填Should；be。
35. Children under 12 years old should be allowed to leave at home alone.(改为否定句)
__________________________________
【答案】Children under 12 years old should not be allowed to leave at home alone．
【详解】句意：12岁以下的儿童应该被允许单独留在家里。原句是含有情态动词的被动语态，变成否定句，只需在情态动词后加not，故填 Children under 12 years old should not be allowed to leave at home alone．
[真题链接]
1.(2023-新疆-维吾尔自治区中考真题)--Hanfu lovers ___walking down the street in many cities. --Well, wearing hanfu helps to understand the Chinese culture.
A. can be found B. can find
C. must be found D. must find
【答案】A
【详解】句意：-在许多城市的大街上都能找到汉服爱好者。-嗯，穿汉服有助于了解中国文化。考查被动语态。can能够；must必须。“Hanfu lovers”与find是被动关系，所以此处用被动语态，排除B和D选项。此处表示能在大街上找到汉服爱好者，故选A。
2.(2023·黑龙江省·齐齐哈尔市中考真题)Why do the elephants in Thailand have to __
- Because humans there catch them for their ivory to make money,
A.protect B. be protected C. are protected
【答案】B
【详解】句意：-为什么泰国的大象必须受到保护？-因为那里的人类为了赚钱而抓大象取象牙。考查被动语态。elephants和 protect之间是被动关系，此处用含情态动词的被动语态have to be done。故选B。
3.(2022-湖北黄石·统考中考真题)--Do you think junior high school students_____to get their ears pierced --No, I don't think so. It is against the school rules.
A. should allow B. allow C.have allowed D. should be allowed
【答案】D
【详解】句意：-你认为初中学生应该被允许打耳洞吗？-不，我不这么认为。这是违反校规的。考查被动语态。主语 students 和动词allow之间是被动关系，应用被动语态，故选D。
4.(2022·湖北武汉·统考中考真题)During the Tang dynasty (唐朝), nearly everything produced in the world_____on the streets of Chang'an.
A. is found B. has been found C. will be found D. could be found
【答案】D
【详解】句意：在唐朝，在长安的街道上几乎可以找到世界上所有的东西。
考查时态和语态。主语“nearly everything produced in the world”与动词find之间是动宾关系，此处表示能够被找到，结合“During the Tang dynasty”可知用过去式could表示“能够”，此处是含情态动词的被动语态，用could be found。故选D。
5.(2021-贵州黔西·统考中考真题)-More trees need to be planted in the northwest of China
-Yes. With enough trees, sandstorms (沙尘暴)could______.
A.protect B. be protected C.stop D. be stopped
【答案】D
【详解】句意：-中国西北部需要种植更多的树木。-是的。有了足够的树木，沙尘暴就可以被阻止。考查情态动词的被动语态以及动词辨析。protect保护；stop停止。根据“With enough trees，sandstorms（沙尘暴）could”可知，有了足够的树，沙尘暴才可以被阻止，主语“sandstorms”与谓语动词“stop”是逻辑上的动宾关系，因此使用被动语态；又因题空前“could”可知，这里是情态动词的被动语态，结构是“情态动词＋bedone”。故选D。
6.(2021·江苏镇江·统考中考真题)More dinosaur fossils(化石),including footprints, bones or eggs, could_____in the future.
A. discover B. be discovered C. have discovered D. be discovering
【答案】B
【详解】句意：未来可能会发现更多的恐龙化石，包括脚印、骨头或蛋。
考查含有情态动词的被动语态。主语More dinosaur fossils是动作discover的承受者，用含有情态动词could的被动语态表示。故选B。
7.(2021·贵州毕节·统考中考真题)No matter how many difficulties we have, I believe all the problems can______ in the end.
A. solve B. be solved C. answer D. be answered
【答案】B
【详解】句意为：无论我们将遇到多少困难，我相信最终所有的问题都会得到解决。
考查被动语态和动词辨析。solve解决；answer回答；根据句意可知，此处指的是问题会解决，句子主语problems与动词solve之间存在逻辑上的动宾关系，应用被动语态，此处是情态动词的被动，结构是“情态动词＋be＋过去分词”，故选B。
8.(2021·广西贵港·统考中考真题)-Mum, could I help you take out the rubbish
-Sure. But it ___ into different kinds for recycling first.
A. separates B.should separate
C. was separated D. should be separated
【答案】D
【详解】句意：-妈妈，我能帮你把垃圾拿出去吗？-确定。但是首先应该把它们分成不同的种类进行回收。
考查时态和语态辨析。主语“it”与动词 separate之间是动宾关系，用被动语态；结合常识可知此处讲垃圾应该先被分类，用含情态动词should的的被动语态，其结构为should be done。故选D。
9.(2021·湖北襄阳·统考中考真题)-This math problem ______ in half an hour. -Don't worry, Mr. Wang is good at math. He can make it.
A. is working out B. would work out
C. should be worked out D. has worked out
【答案】C
【详解】句意：-这道数学题应在半小时内解决。-不要担心。王先生擅长数学。他可以解出它。
考查被动语态。根据“in half an hour”可知，此处应用一般将来时的被动语态，从时态上排除A／B／D选项，C选项是含有情态动词的被动语态，符合语境和语法，故选C。
10.(2021-湖北黄石·统考中考真题)-How long may I ___ your magazine
-For one week. But it mustn't _____to others.
A. borrow; lend B. keep; be lent C. lend; be borrowed D. have; lend
【答案】B
【详解】句意：-我能借你的字典多长时间？-一周。但是你不能把它借给其他人。
考查动词辨析。borrow借，是瞬间性动词，不能和一段时间搭配使用；keep保存，保持，是延续性动词；lend借给，瞬间性动词；have拥有。根据第一句话中How long可知，表示一段时间，要与延续性动词一起连用，排除AC。主语it是动作lend的承受者，用被动语态，故选B。
11.(2021-四川达州·统考中考真题)-Why do some whales have to _____
--Because humans catch whales for meat, fat and oil. Some of them are_____.
A.protect; dangerous B.protect; endangered
C. be protected; dangerous D. be protected; endangered
【答案】D
【详解】句意：-为什么要保护一些鲸鱼？-因为人类捕捉鲸鱼是为了获取肉、脂肪和油。其中一些濒临灭绝。
考查被动语态和形容词辨析。endangered 濒临灭绝的；dangerous危险的；句子主语whales与动词 protect之间是被动关系，应用被动语态，have to是情态动词，此处构成情态动词的被动结构，排除A／B选项；结合常识可知，保护鲸鱼是因为一些鲸鱼濒临灭绝，第二空应用形容词endangered作表语，故选D。
12.(2021·云南昆明·统考中考真题)A lot of teenagers think as they are older and wiser, they ______to make their own decisions.
A. should allow B. shouldn't allow
C.should be allowed D. shouldn't be allowed
【答案】C
【详解】句意：很多青少年认为随着他们年龄的增长和智慧的提高，他们应该被允许自己做决定。考查含情态动词的被动语态。主语“they”与allow之间是动宾关系，此处用被动语态；再由“as they are older and
wiser”可知随着他们更年长、更聪明，应该被允许自己做决定，用肯定句。故选C。
13.(2020-广西贺州·统考中考真题)Your homework must be _____this morning, or you can't hand it in on time.
A. finish B. finished C.finishes D. finishing
【答案】B
【详解】句意：你的家庭作业必须今天早晨完成，否则你不能按时上交。
考查动词的语态。主语“Your homework”与动词“finish”之间是被动关系，情态动词“must”后用“be finished”。空处填过去分词finished。故选B。
14.(2020-贵州毕节·统考中考真题)The air pollution is very serious in our city. Something ______ about it now.
A. can do B. must do C. was done D.must be done
【答案】D
【详解】句意：我们城市的空气污染很严重，现在必须采取措施。
考查情态动词和被动语态。can do 能做；must do 必须做；was done被做，动词的一般过去时的被动；must be done 必须被做，是情态动词加动词的被动形式。根据“我们城市的空气污染很严重”可知此处指“必须采取措施”，要用情态动词must；句子中主语something是动作的承受者，要用被动语态，此处do的被动语态为must be done。故选D。
15.(2020-湖南邵阳·统考中考真题)-A new airport will be built in Tantou, Longhui.
-Good news! But a lot of good farmland___.
A. will waste B. may be wasted C. has wasted
【答案】B
【详解】句意：-隆回滩头将建一个新机场。-好消息！但是很多好的农田可能被浪费了。
考查被动语态。will waste会浪费，一般将来时的主动语态；may be wasted 可能被浪费，情态动词下的被动语态；has wasted 已经浪费了，现在完成时的主动语态。根据语境可知，建新机场，农田会被浪费，“农田”是动作“浪费”的承受者，故本句应为被动语态，结合选项可知B选项符合题意。故选B。
16.(2019-四川遂宁·中考真题)Some people think trees ___on Tree Planting Day only.
A. should plant B. should be planted
C. should be plant D. should be planting
【答案】B
【详解】句意：一些人认为应该只在植树节的时候种树。
should plant应该种植；should be planted是被动语态；C形式错误；should be planting应该正在种植。根据题干可知一些人们认为种树应该只在植树节，其中trees和plant是被动关系，且句中有情态动词should，则此处应用含情态动词的被动语态 should be done，故选B。
17.(2019-四川自贡·中考真题)--Tom is always careless with his schoolwork. Could you help him --No problem! I think he ____ to think twice before starting.
A. should be told B. shouldn't be told C. should tell
[答案]A
[详解]句意:汤姆总是粗心大意，你能帮他吗
-没问题!我想应该告诉他在开始前要先三思。
首先根据语境判断答语的意思是“没问题，我想应该告诉他在开始前要先三思，主语he 是动作tell的承受者，表示"被告知"，确定用被动语态，根据句意用情态动词should,含有情态动词的被动语态的构成是:主语+情态动词+be+动词的过去分词，根据题意，故选A。
18.(2022上·安徽滁州·九年级校考期末)Do you know what the model planes are made of -Waste wood from old buildings that were ______. You see, waste things can be ____ to life.
A. pull down; bring back B. pulled down; brought back
C. pull down; take away D. pulled down; taken away
【答案】B
【详解】句意：-你知道这个飞机模型是用什么做的吗？-来自拆除的旧建筑的废木材。你看，废物被重新利用。
考查被动语态和短语辨析。pull down拆毁；bring back再次使用；take away带走。that关系代词，指代“old buildings”，与“pull down”之间为被动关系；第二空中重回利用，重新焕发生机的英语表达为“bring back to life”，且“waste things”和“bring back”之前也构成被动关系。被动语态的构成为“be＋过去分词”。故选B。
19.(2022上-安徽蚌埠·九年级统考期末)--Girls in some countries have to work instead of going to school. -That's too bad. Girls should ____ to receive education like boys.
A. allow B. have allowed C. be allowing D. be allowed
【答案】D
【详解】句意：-一些国家的女孩子必须得工作，而不能去上学。-这太糟糕了。女孩应该被允许像
男孩一样接受教育。
考查情态动词的被动语态。根据“Girls in some countries have to work instead of going to school.”可知，此处主语“Girls”和实义动词“allow”之间应为被动关系，又因空前有情态动词“should”，所以，此处需用情态动词的被动语态，其结构为“情态动词＋be＋动词的过去分词”。故选D。
20.(2022上·安徽滁州·九年级校联考期末)Plenty of teenagers think as they grow older, they ____ to make their own decisions.
A. should allow B. shouldn't allow
C. should be allowed D. shouldn't be allowed
【答案】C
【详解】句意：许多青少年认为，随着他们长大，他们应该被允许自己做决定。
考查情态动词的被动语态。主语“they”与allow之间是动宾关系，此处用被动语态；再由“as they grow older”可知随着他们更年长，应该被允许自己做决定，用肯定句。故选C。
21.(2022上·黑龙江齐齐哈尔-九年级校联考期末)The flowers should ___every day when summer comes.
A. be watered B. water C. watered
【答案】A
【详解】句意：当夏天来临的时候，这些花应该每天浇水。
考查被动语态。根据“The flowers should...”并结合选项可知，花应该是被浇水，用被动语态be done。空前含情态动词should，故此空填be watered。故选A。
22.(2022上·四川达州·九年级统考期末)Children_____ to be honest from a young age.
A. should be educated B. should educate
C.may be educated D. may educate
【答案】A
【详解】句意：孩子们应该从小就被教育要诚实。
考查情态动词和被动语态。should be educated应该受教育；should educate 应该教育；may be educated 可能受过教育；may educate可能教育。分析题干可知，主语children和动词educate之间是被动关系，应使用被动语态，排除B和D；结合“to be honest from a young age”可知，此处表示一种责任或义务，情态动词使用should。故选A。
23.(2022上·广西贺州·九年级统考期末)Children under 12 years old ___ride sharing bikes. It's too dangerous,
A. should allow to B. shouldn't allow to
C. should be allowed to D. shouldn't be allowed to
【答案】D
【详解】句意：12岁以下的儿童不应该被允许骑共享单车。太危险了。
考查情态动词的被动语态。主语Children under 12 years old和谓语 allow之间是被动关系，故此处用含有情态动词的被动语态：should be done，排除AB；根据“It＇s too dangerous”可知骑共享单车太危险了，所以应是不允许骑自共享单车，排除C。故选D。
24.(2022上·黑龙江佳木斯·九年级统考期末)-It’s very difficult for the village kids to take boats to school. --I think a bridge __ over the river.
A. should build B. should be built C. was built
【答案】B
【详解】句意：-对村里的孩子来说，坐船上学是很困难的。-我认为应该在河上建一座桥。
考查被动语态。分析句子，可知“bridge”和“built”之间是被动关系；根据“I think”（我认为），可知应用情态动词should加被动语态“be＋done”来表示“我认为应该在河上建一座桥”。故选B。
25.(2022上·重庆开州·九年级统考期末)If you are over 18 years old, you____ to drive a car in China.
A. can allow B. can't allow C. can be allowed D. can't be allowed
【答案】C
【详解】句意：如果你超过18岁，你可以被允许在中国驾驶汽车。
考查被动语态。根据“If you are over 18 years old”和常识可知，年满18岁可以驾驶汽车；主语you与“允许”之间是动宾关系，故用被动语态，即can be＋过去分词，be allowed to do sth“被允许做某事”。故选C。
26.(2022上·广西玉林-九年级统考期末)-I hear music and art will enter the Entrance Examination for the high school(中考).
-Yes. From now on, more attention should ___ to them and we will pass them easily.
A. pay B. paid C. be paying D. be paid
【答案】D
【详解】句意：-我听说音乐和美术将进入高中入学考试。-是的。从现在开始，我们应该更多地关注他们，我们会很容易通过他们。
考查被动语态。主语attention和pay之间是被动关系，故此处用含有情态动词的被动语态：情态动词＋be done。故选D。
27. (2022上·江西吉安·九年级江西省吉水县第二中学校联考期末)Thanks to the Internet, lots of information___online.
A, can search B. can't search C. can be searched D. can't be search
【答案】C
【详解】句意：多亏了互联网，很多信息都可以在网上搜索到。
考查被动语态。主语 information和谓语search之间是被动关系，故此处是含有情态动词的被动语态：can be done，search的过去分词是searched。故选C。
28.(2022上·重庆江津·九年级统考期末)Lisa is seriously ill. I think she should______to the hospital as soon as possible.
A. take B. be taken C. is taken D. was taken
【【答案】B
【详解】句意：丽莎病得很重。我想她应该尽快被送到医院。
考查被动语态。主语she和动词之间是被动关系，应该用被动语态，空前是情态动词，所以应用含有情态动词的被动语态结构：情态动词＋be done。故选B。
29.(2022上·广西河池·九年级统考期末)In order to make our city more beautiful, more trees and flowers____ every year.
A，are planting B. should be planted C. should plant D. will plant
【答案】B
【详解】句意：为了使我们的城市更美丽，每年应该种植更多的树木和花卉。
考查被动语态。句子主语more trees and flowers和谓语plant“种植”之间是被动关系，用被动语态 be done，排除ACD。故选B。
30. (2022上·湖南怀化·九年级统考期末)No matter how many difficulties we have, I believe all problems___ in the end.
A. can solve B. can be solved C. be solved
【答案】B
【详解】句意：不管我们遇到多少困难，我相信所有的问题最后都会被解决。
考查含情态动词的被动语态。根据“I believe all problems...in the end.”可知，应当是“能够被解决”，用情态动词can。且“问题”和“解决”之间存在逻辑上的动宾关系，应用被动语态，故选B。
31.(2022上·吉林长春·九年级统考期末)Beijing can_____ in the photo taken by Nie Haisheng from the space station.
A. see B. saw C. seen D. be seen
【答案】D
【详解】 句意：聂海胜在空间站拍摄的照片中可以看到北京。
考查被动语态。根据“Beijing can...in the photo taken by Nie Haisheng from the space station.”可知，此处主语和动词之间为被动关系，使用被动语态，空前为can，结构为can be done。故选D。
32.(2022上·广西贵港·九年级统考期末)-You must be more careful, Jenny. I see. The same mistake I've ever made _____from now on.
A. should be avoided B. is avoided C. should avoid D. avoids
【答案】A
【详解】句意：-珍妮，你必须更加认真。-我明白。从现在起，我应该避免犯同样的错误。考查被动语态。主语mistake和谓语avoid“避免”之间是被动关系，用被动语态，排除CD；根据“The same mistake I＇ve ever made...from now on”可知这种错误应该被避免，故应用含有情态动词的被动语态：情态动词＋be done。故选A。
33.(2022上·山东济南·九年级统考期末)Teenagers should______to smoke. It’s too bad for their health.
A. not allow B. allow C. not be allowed D. be allowed
【答案】C
【详解】句意：青少年不应该被允许吸烟。这对他们的健康太坏了。
考查含情态动词的被动语态。主语teenagers与谓语allow“允许”之间是被动关系，且前有情态动词，故此处用情态动词的被动语态 should be done；根据“It＇s too bad for their health”可知对他们的健康有害，所以不应该被允许吸烟。故选C。
34.(2022上·山东青岛·九年级统考期末)Tooth health plays an important part in our daily life. So our teeth should______.
A. take care B. be taken care of C. take care of D. be taken care
【答案】B
【详解】句意：牙齿健康在我们的日常生活中扮演着重要的角色。所以我们应该照顾好自己的牙齿。考查被动语态。主语“our teeth”与“take care of照顾”之间是被动关系，用被动语态be＋done的结构，且介词of保留。故选B。
35.(2022上河北石家庄·九年级统考期末)Thanks should_____ in time when someone helps you.
A. express B. expressed C. be expressed D. have expressed
【答案】C
【详解】句意：当有人帮助你时，应该及时表示感谢。
考查被动语态。主语“Thanks”与动词“express”之间是被动关系，又结合should可知，此处用含有情态动词的被动语态结构“should be done”，故选C。
Thanks!
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https://www.21cnjy.com/help/help_extract.php/ 让教学更有效 英语学科
Unit 7 Teenagers should be allowed to choose their own clothes.
语法讲练
【知识导图】
【要点拓展】
1．祈使句变为被动句时，用“ 宾语 过去分词”句式；否定祈使句变为被动句时，用“Don＇t let＋宾语＋be＋过去分词”句式。
Keep the book on the desk.→Let the book be kept on the desk.
Don't put the knife here.→Don't let the knife be put here.
2．主动形式表示被动意义的情况
（1）连系动词如smell、taste、feel、sound等，可以用主动形式表示被动意义。The food smells delicious.食物闻起来很美味。
（2）表示主语特征、状态的动词如wash、write、sell、read、open、cut、keep、lock、clean等，可以用主动形式表示被动意义。
This kind of pens sells well.这种钢笔卖得好。
（3）表示开始、结束类的动词如start、begin、close、finish、stop、end等，可以用主动形式表示被动意义。They ended the game with a score of 78-50．他们以78比50结束了比赛。
（4）在表示“需要”意义的need、want、require等词的后面加动名词，是主动形式表示被动意义，其含义相当于动词不定式的被动形式。
This desk needs repairing be repaired）.这张课桌需要修理。
Your coat needs washing be washed）.你的大衣需要洗一下。
（5）形容词 worth后跟动名词的主动形式表示被动意义。
These books are worth reading.这些书值得一读。
The museum is worth visiting.那个博物馆值得参观。
【奇思巧计】
【同步检测】
一、单项选择
1. - Teachers should___carefully. - I think so. It's a good way to study well.
A. listen to B. be listened to C. be listening to
2. This Maths problem __out by Tom.
A. can be easily work B. can easily be worked
C.can is easily worked D. can easily worked
3. The dictionary mustn't ______from the library .
A. take away B. taken away C. are taken away D. be taken away
4.--Mrs Watson, how long can the books from the school library _____ -At most two weeks.
A. borrow B. keep C. be borrowed D. he kept
5.Attention, please! All the mobile phones ____ before the meeting starts.
A. may turn off B. must tum off C. must be turned off
6.--Teenagers should____go swimming by themselves. -So it is.
A. not allowed B. be not allowed to C. not be allowed to D. not be allowed
7. -I think our classroom must ____ every day. -Yes, but we can do it after school.
A. clean B. cleaned C. be cleaning D. be cleaned
8. Do you think teenagers should be ____away from the internet
A. kept B. keeps C. keeping
9. -Do you know where Kate is
--She ____to Kangkang's birthday party. But I'm not sure.
A.might invite B. must be invited C.could be invited
10. -Passengers _____ if they do something that influences the normal driving of the driver.
-Yes, safety comes first. People should obey the traffic rules.
A. punish B. will punish C. should be punished
11. -Children under 12 should not drive e-bikes.
-That's true. We are also advised _____helmets(头盔)to keep safe.
A. allow; wearing B. be allowed to; to wear
C.allowed to; to wear D. be allowed to; wearing
12. Boys and girls, don't forget your report. It _____ today.
A. can't finish B. can't be finished C. mustn't finish D.must be finished
13. All of our schoolbags _____behind chairs according to our class rule.
A. must be put B. must put C.must be putted D. can be put
14. _____your homework _____on time - Yes, of course.
A. Must be; handed in B. Must; be handed in
C. Need; to be handed in D. Need; hand in
15. -Can I take this magazine away, Mr.Sun
-No. It _____out of the reading room.
A. can't be taken B. can be taken C. can't take
二、用所给单词的正确形式填空
16. I think teenagers should be _____(allow) to make their own decisions.
17. In order to make Yongzhou City more beautiful, trees and flowers should ____(plant)every year.
18. The lights in the classroom should _____(tum) off when there is nobody in it.
19. To learn English well, students should be _____(encourage) to speak as much as possible.
20. The task must _____(finish) today, or you'll be punished.
21.Silk made by hand can _____(sell) at a good price.
22. My grandmother is ill. A doctor must _____(send) for at once.
23.Children should _____(educate) to respect and help other people.
24. Balzac and Tang Xianzha can be _____(regard) as models.
25. Children should _____(teach) how to get on well with others.
三、根据首字母填空
26.Kids should be e _____to accept breaking bad news from a young age. It's as important as what they could learn from books.
27.He suggested that our class should be d _____into five groups.
28. Teenagers should be a_____ to choose their own clothes.
29.Mobile phones should be k _____ off during the class.
30. Don't worry! I think the problem can be s _____easily without much trouble.
四、句型转换
31. Students should finish their homework on time.(改为被动语态)
Their homework ____be ____by students on time.
32. The students should sweep the floor every day.(改为被动语态)
The floor should _____ ______by the students every day.
33. Students can't take magazines out of the reading room without permission.(改为被动语态)
Magazines _____ ______ ______out of the reading room without permission by students.
34. Teenagers should be allowed to choose their own clothes. (改为一般疑问句)
_____teenagers _____allowed to choose their own clothes
35. Children under 12 years old should be allowed to leave at home alone.(改为否定句)
__________________________________
[真题链接]
1.(2023-新疆-维吾尔自治区中考真题)--Hanfu lovers ___walking down the street in many cities. --Well, wearing hanfu helps to understand the Chinese culture.
A. can be found B. can find
C. must be found D. must find
2.(2023·黑龙江省·齐齐哈尔市中考真题)Why do the elephants in Thailand have to __
- Because humans there catch them for their ivory to make money,
A.protect B. be protected C. are protected
3.(2022-湖北黄石·统考中考真题)--Do you think junior high school students_____to get their ears pierced --No, I don't think so. It is against the school rules.
A. should allow B. allow C.have allowed D. should be allowed
4.(2022·湖北武汉·统考中考真题)During the Tang dynasty (唐朝), nearly everything produced in the world_____on the streets of Chang'an.
A. is found B. has been found C. will be found D. could be found
5.(2021-贵州黔西·统考中考真题)-More trees need to be planted in the northwest of China
-Yes. With enough trees, sandstorms (沙尘暴)could______.
A.protect B. be protected C.stop D. be stopped
6.(2021·江苏镇江·统考中考真题)More dinosaur fossils(化石),including footprints, bones or eggs, could_____in the future.
A. discover B. be discovered C. have discovered D. be discovering
7.(2021·贵州毕节·统考中考真题)No matter how many difficulties we have, I believe all the problems can______ in the end.
A. solve B. be solved C. answer D. be answered
8.(2021·广西贵港·统考中考真题)-Mum, could I help you take out the rubbish
-Sure. But it ___ into different kinds for recycling first.
A. separates B.should separate
C. was separated D. should be separated
9.(2021·湖北襄阳·统考中考真题)-This math problem ______ in half an hour. -Don't worry, Mr. Wang is good at math. He can make it.
A. is working out B. would work out
C. should be worked out D. has worked out
10.(2021-湖北黄石·统考中考真题)-How long may I ___ your magazine
-For one week. But it mustn't _____to others.
A. borrow; lend B. keep; be lent C. lend; be borrowed D. have; lend
11.(2021-四川达州·统考中考真题)-Why do some whales have to _____
--Because humans catch whales for meat, fat and oil. Some of them are_____.
A.protect; dangerous B.protect; endangered
C. be protected; dangerous D. be protected; endangered
12.(2021·云南昆明·统考中考真题)A lot of teenagers think as they are older and wiser, they ______to make their own decisions.
A. should allow B. shouldn't allow
C.should be allowed D. shouldn't be allowed
13.(2020-广西贺州·统考中考真题)Your homework must be _____this morning, or you can't hand it in on time.
A. finish B. finished C.finishes D. finishing
14.(2020-贵州毕节·统考中考真题)The air pollution is very serious in our city. Something ______ about it now.
A. can do B. must do C. was done D.must be done
15.(2020-湖南邵阳·统考中考真题)-A new airport will be built in Tantou, Longhui.
-Good news! But a lot of good farmland___.
A. will waste B. may be wasted C. has wasted
16.(2019-四川遂宁·中考真题)Some people think trees ___on Tree Planting Day only.
A. should plant B. should be planted
C. should be plant D. should be planting
17.(2019-四川自贡·中考真题)--Tom is always careless with his schoolwork. Could you help him --No problem! I think he ____ to think twice before starting.
A. should be told B. shouldn't be told C. should tell
18.(2022上·安徽滁州·九年级校考期末)Do you know what the model planes are made of
-Waste wood from old buildings that were ______. You see, waste things can be ____ to life.
A. pull down; bring back B. pulled down; brought back
C. pull down; take away D. pulled down; taken away
19.(2022上-安徽蚌埠·九年级统考期末)--Girls in some countries have to work instead of going to school. -That's too bad. Girls should ____ to receive education like boys.
A. allow B. have allowed C. be allowing D. be allowed
20.(2022上·安徽滁州·九年级校联考期末)Plenty of teenagers think as they grow older, they ____ to make their own decisions.
A. should allow B. shouldn't allow
C. should be allowed D. shouldn't be allowed
21.(2022上·黑龙江齐齐哈尔-九年级校联考期末)The flowers should ___every day when summer comes.
A. be watered B. water C. watered
22.(2022上·四川达州·九年级统考期末)Children_____ to be honest from a young age.
A. should be educated B. should educate
C.may be educated D. may educate
23.(2022上·广西贺州·九年级统考期末)Children under 12 years old ___ride sharing bikes. It's too dangerous,
A. should allow to B. shouldn't allow to
C. should be allowed to D. shouldn't be allowed to
24.(2022上·黑龙江佳木斯·九年级统考期末)-It’s very difficult for the village kids to take boats to school. --I think a bridge __ over the river.
A. should build B. should be built C. was built
25.(2022上·重庆开州·九年级统考期末)If you are over 18 years old, you____ to drive a car in China.
A. can allow B. can't allow C. can be allowed D. can't be allowed
26.(2022上·广西玉林-九年级统考期末)-I hear music and art will enter the Entrance Examination for the high school(中考).
-Yes. From now on, more attention should ___ to them and we will pass them easily.
A. pay B. paid C. be paying D. be paid
27. (2022上·江西吉安·九年级江西省吉水县第二中学校联考期末)Thanks to the Internet, lots of information___online.
A, can search B. can't search C. can be searched D. can't be search
28.(2022上·重庆江津·九年级统考期末)Lisa is seriously ill. I think she should______to the hospital as soon as possible.
A. take B. be taken C. is taken D. was taken
29.(2022上·广西河池·九年级统考期末)In order to make our city more beautiful, more trees and flowers____ every year.
A. are planting B. should be planted C. should plant D. will plant
30. (2022上·湖南怀化·九年级统考期末)No matter how many difficulties we have, I believe all problems___ in the end.
A. can solve B. can be solved C. be solved
31.(2022上·吉林长春·九年级统考期末)Beijing can_____ in the photo taken by Nie Haisheng from the space station.
A. see B. saw C. seen D. be seen
32.(2022上·广西贵港·九年级统考期末)-You must be more careful, Jenny. I see. The same mistake I've ever made _____from now on.
A. should be avoided B. is avoided C. should avoid D. avoids
33.(2022上·山东济南·九年级统考期末)Teenagers should______to smoke. It’s too bad for their health.
A. not allow B. allow C. not be allowed D. be allowed
34.(2022上·山东青岛·九年级统考期末)Tooth health plays an important part in our daily life. So our teeth should______.
A. take care B. be taken care of C. take care of D. be taken care
35.(2022上河北石家庄·九年级统考期末)Thanks should_____ in time when someone helps you.
A. express B. expressed C. be expressed D. have expressed
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