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/ 让学习更有效 新课备课备考 | 英语学科
/ 让学习更有效 新课备课备考 | 英语学科
2026-2027学年八年级英语上册单元复习考点培优沪教版（五四学制）
（新教材）Unit 2 Digital life
专题09 改写句子
学校:___________姓名：___________班级：___________考号：___________
1．The Eiffel Tower is 300 meters tall. The Shanghai Tower is 632 meters tall. (合并)
The Shanghai Tower is ____________ the Eiffel Tower.
2． I’m aware of the value of peace after watching the film Dead to Rights. (改为一般疑问句)
______ you ______ of the value of peace after watching the film Dead to Rights
3．The cost was twice what we had budgeted. (用“as…as”改写句子)
The cost was ____________ we had budgeted.
4．“The population of Tokyo is about 14 million,” said the teacher. (改为间接引语)
The teacher said ____________ about 14 million.
5．Mr. Li was cooking in the kitchen. His children were running in the garden. (用while合并为一句)
________ Mr. Li was cooking in the kitchen, his children ________ running in the garden.
6．People plant millions of trees every year.（改为被动语态）
Millions of trees ________ ________ every year.
7．Only 30% of the students completed the assignment on time. (改为被动语态)
Only 30% of the assignment ____________ on time.
8．I was talking on the phone. The UFO landed. (用when或while合为一句)
I was talking on the phone ________ the UFO landed.
________ I was talking on the phone, the UFO landed.
9．He listened to music. He was doing his homework. (用while合并句子)
___________________________.
10．I will finish my homework. I will watch TV. (用as soon as合并为一句)
I will watch TV as soon as I ________ my homework.
11．Lack of exercise led to health problems. (改为一般疑问句)
________________________________
12．I was cooking dinner. My brother was setting the table.（用while合并为一句）
________________________________
13．Mary opened the old book. A mysterious letter fell out immediately. (合并为一句，并保持句意基本不变)
________________________________________
14．Tony hid his book under his jacket to keep it dry. (改为否定句)
Tony ________ ________ his book under his jacket to keep it dry.
15．The children went to play on the playground. The rain stopped. (用as soon as将两句合并为一句)
____________________________
16．All the students ran out of the classroom. The bell rang.（用 as soon as 连接）
______________________________________________________________
17．I’m aware of the value of peace after watching the film Dead to Rights. (改为一般疑问句)
______ you ______ of the value of peace after watching the film Dead to Rights
18．The tiger hid the deer he caught in the tree. (改为否定句)
_______________________________________
19．He sent an urgent e-mail to his client. (改为否定句)
________________ an urgent e-mail to his client.
20．Jack presses the screen. Jack’s tablet follows his orders. (用as soon as合并为一句)
________________
21．Many students there did not have a chance to study. The project started. (合并成时间状语从句)
________________________________________________________
22．Mike sent me a ticket to my favorite star’s singing competition.(变为否定句)
Mike ________ ________ me a ticket to my favorite star’s singing competition.
23．Touch the running machine. (改为否定形式)
________ ________ the running machine.
24．Turn off the lights. You leave the room. (用before合并句子)
_____________________________________________________
25．He finished his homework. He played video games. (用after改写句子)
_____________________________________________________
26．Karen sent her articles to magazines and newspapers. (改为否定句)
Karen ________ ________ her articles to magazines or newspapers.
27．While my mother was cooking, I set the table. (用at the same time改为简单句)
______________________________________________________
28．He sent an email to his friend last week. (改为一般疑问句)
_______ he _______ an email to his friend last week
29．The bell rang. The students ran out of the classroom. (用when合并成一句)
______________________________
30．There was hardly anyone in the streets on the cold evening. (改为反意疑问句)
_____________________________________
31．The farmer fed the chickens in the early morning as usual. （改为否定句）
_____________________________________
32．The rain stopped. They went to the playground. (用as soon as合并句子)
______________________________________________
33．“I would like to make a complaint about the laptop,” Wang Yiming said. (改为间接引语)
_____________________________________________
34．Many students in rural areas enjoy online lessons. The lessons are taught at a top school.（用过去分词作定语合并句子）
________________________________________________
35．The robots move around. They send video information to the control unit.（用while合并句子）
_________________________________________________
36．A new type of smart walking stick can detect any object. The person gets close to the object. (用as soon as合并句子)
__________________________________________________
37．People can buy many things on the Internet.（改为被动语态）
Many things ________ ________ ________ on the Internet.
38．Digital technology makes life easier for the disabled.（改为被动语态）
___________________________________________________
39．It is important to protect our personal information online. (改为感叹句)
________ important it is to protect our personal information online!
40．Turn off the tap. (改为否定句)
________ ________ off the tap.
41．Digital technology has changed our lives a lot. (改为一般疑问句)
________ digital technology ________ our lives a lot
42．The twins were talking loudly when the teacher came in. (用while改写句子)
________ the twins were talking loudly, the teacher ________ in.
43．Lucy will give a phone call to her friend. Lucy will get off the plane.（用as soon as合并为一句）
Lucy will give a phone call to her friend as soon as she ________ ________ the plane.
44．I’ll phone you again when I get home.（保持句意不变）
I’ll phone you again ________ ________ ________ I get home.
45．China has the largest number of internet users in the world. (改为同义句)
No other country ____________ China.
46．Students must realize the risks when doing experiments in the lab. (保持句义不变)
Students must be ________ ________ the risks when doing experiments in the lab.
47．Sports are good for health.(同义句改写)
Sports are of great ________ to health.
48．She continued her work without any rest. (保持句意基本不变)
She ________ ________ working without any rest.
49．Many young parents realize the influence of their actions on the children. (保持句意基本不变)
Many young parents are ________ ________ the influence of their actions on the children.
50．More and more people have realized the importance of low-carbon lifestyle. (保持句意不变)
More and more people have been ________________ the importance of low-carbon lifestyle.
51．The little girl didn’t realize the danger. (保持句意基本不变)
The little girl wasn’t ________ the danger.
52．The students clearly realized the consequences of cheating, yet some still attempted it. (保持句意基本不变)
_____________________________________
53．To conclude, I would like to thank everyone for their hard work. (保持原句意思不变)
________________, I would like to thank everyone for their hard work.
54．My brother spends two hours playing computer games every day. (改为同义句)
It ________ my brother two hours ________ play computer games every day.
55．He received the e-mail and immediately replied to it. (保持句意基本不变)
_____________________________________
56．The policeman arrived where the accident happened immediately. (保持原句意思不变)
The policeman arrived where the accident happened ________.
57．He set off at once and headed back to the motel. (保持句意基本不变)
He set off ________ ________ and headed back to the motel.
58．They went home at once when it began to rain. (同义句替换)
They went home ________ ________ when it began to rain.
59．We can use the app to learn English. (对划线部分提问)
________ can you use the app to ________
60．The population of my hometown is 300 million now. (对画线部分提问)
________ the ________ of your hometown now
/ 让学习更有效 新课备课备考 | 英语学科
/ 让学习更有效 新课备课备考 | 英语学科
21世纪教育网(www.21cnjy.com)
21世纪教育网(www.21cnjy.com)
《汉语》参考答案
1．more than twice as tall as
【解析】句意：埃菲尔铁塔高300米。上海中心大厦高632米。埃菲尔铁塔高300米，两倍高度为600米，上海中心大厦632米大于600米；倍数表达固定结构“倍数+as+形容词原级+as”，“两倍多”译为more than twice，形容词用原级tall，完整短语为more than twice as tall as。
2．Are aware
【解析】句意：看完电影《南京照相馆》后，我意识到了和平的价值。原句含有“am”，改为一般疑问句时，将“am”提前并改为are，主语“I”改为you，其余部分不变；句首单词首字母大写。故填Are；aware。
3．twice as much as
【解析】句意：费用是我们预算的两倍。原句twice what we had budgeted表示两倍预算金额，“倍数+as much as”是as…as倍数表达固定结构，much指代不可数的金额概念，twice as much as意为“是……的两倍”，符合题目as…as改写要求，故填twice as much as。
4．that the population of Tokyo was
【解析】句意：老师说东京的人口大约有1400万。句子为直接引语变间接引语，主句谓语said是一般过去时，从句时态需要用相应的过去时态，is改为was，间接引语用that引导。
5．While were
【解析】句意：李先生正在厨房做饭。他的孩子们在花园里跑来跑去。原句时态为过去进行时，用while连接两个过去进行时的句子，可表示两个动作在过去同时进行，句子结构可以是，“主句+while+从句”或“While+从句，主句”，因此第一空填while，位于句首，单词首字母需大写；第二空：主句时态应为过去进行时（结构为was/were + doing），主语his children是复数，对应的be动词应用were。
6．are planted
【解析】句意：人们每年种植数百万棵树。考查一般现在时被动语态改写，原句“every year”为一般现在时标志，被动语态结构为“am/is/are+动词过去分词”；主语“Millions of trees”为复数，be动词选用are，plant的过去分词为planted。
7．was completed by the students
【解析】句意：只有30%的学生按时完成了作业。句子为一般过去时，改为被动语态要用“was/were+过去分词”；主语assignment是单数，be动词用was，complete的过去分词是completed，动作执行者用by引出。
8．when While
【解析】句意：我正在打电话的时候。不明飞行物降落了。第一空：主句是过去进行时（was talking），从句是一般过去时（landed），表示背景动作被短暂动作打断，连接词应用when。第二空：while从句中的谓语动词通常是延续性动词（如 was talking），强调动作持续的过程，且常置于句首。因位于句首，首字母需大写，故填While。
9．He listened to music while he was doing his homework
【解析】句意：他听音乐。他正在做作业。应用while引导时间状语从句，强调 “两个动作同时进行”，结合原句，此处主句“He listened to music”用一般过去时，从句“he was doing his homework”用过去进行时。故填He listened to music while he was doing his homework。
10．finish
【解析】句意：我将完成我的家庭作业。我将看电视。原句中“一……就……”是关键词，本句为“主将从现”结构，主句为一般将来时，从句应用一般现在时表将来，且主语为“I”，谓语动词用原形“finish”。故填finish。
11．Did lack of exercise lead to health problems
【解析】句意：缺乏锻炼导致了健康问题。句子为一般过去时，改为一般疑问句需要借助助动词did，放在句首，首字母需要大写，动词使用原形，led的原形是lead，故填Did lack of exercise lead to health problems
12．I was cooking dinner while my brother was setting the table./While I was cooking dinner, my brother was setting the table.
【解析】句意：我正在做晚饭。我弟弟正在摆餐具。原句时态为过去进行时，用while连接两个过去进行时的句子，可表示两个动作在过去同时进行。句子结构可以是，“主句+while+从句”或“While+从句，主句”。故填I was cooking dinner while my brother was setting the table./While I was cooking dinner, my brother was setting the table.
13．As soon as Mary opened the old book, a mysterious letter fell out.
【解析】句意：玛丽打开了那本旧书。一封神秘的信立刻掉了出来。原句表达的是两个连续的动作，即“打开书”和“信掉出来”，且第二个动作是紧接着第一个动作发生的。可以使用“as soon as”引导时间状语从句，表示“一……就……”，将两个句子合并为一句。故填As soon as Mary opened the old book, a mysterious letter fell out.
14．didn’t hide
【解析】句意：Tony把书藏在夹克下面以保持它是干的。原句为一般过去时的肯定句，且含有实义动词“hid”，改为否定句需要在谓语动词前加助动词did not，缩写为didn’t，并将动词“hid”恢复为原形hide。故填didn’t；hide。
15．The children went to play on the playground as soon as the rain stopped.
【解析】句意：孩子们去操场玩了。雨停了。as soon as是连词短语，意为“一……就……”，用于连接两个有先后顺序的动作。“雨停”是先发生的动作，“孩子们去操场玩”是后发生的动作，表达为“雨一停，孩子们就去操场玩了”，需将先发生的动作作为as soon as引导的时间状语从句。故填The children went to play on the playground as soon as the rain stopped.
16．All the students ran out of the classroom as soon as the bell rang./As soon as the bell rang, all the students ran out of the classroom.
【解析】句意：铃一响，所有学生就跑出了教室。as soon as表示“一…… 就……”，引导时间状语从句，遵循“主将从现”以外的时态一致原则（此处为一般过去时），从句为The bell rang，主句为All the students ran out of the classroom。故填All the students ran out of the classroom as soon as the bell rang./As soon as the bell rang, all the students ran out of the classroom.
17．Are aware
【解析】句意：看完电影《死局》后，我意识到了和平的价值。原句含有be动词am，改为一般疑问句时，将be动词am提前并改为are，主语I改为you，其余部分不变；句首单词首字母大写。故填Are；aware。
18．The tiger didn’t hide the deer he caught in the tree.
【解析】句意：老虎把它抓到的鹿藏在了树上。句子为一般过去时，谓语动词hid是实义动词，改为否定句需要借助助动词didn’t，动词hid改为原形hide。故填The tiger didn’t hide the deer he caught in the tree.
19．He didn’t send
【解析】句意：他给客户发了一封紧急电子邮件。句子为一般过去时，谓语动词sent是实义动词，改为否定句需要借助助动词didn’t，动词sent改为原形send。故填He didn’t send。
20．Jack’s tablet follows his orders as soon as he presses the screen./As soon as Jack presses the screen, his tablet follows his orders.
【解析】句意：杰克按屏幕。杰克的平板电脑遵循他的命令。此处可改为“杰克一按下屏幕，他的平板电脑就遵循他的命令”。as soon as表示“一……就”，引导时间状语从句，从句是as soon as he presses the screen，主句是Jack’s tablet follows his orders，从句可放主句之前，也可放主句之后。故填Jack’s tablet follows his orders as soon as he presses the screen./As soon as Jack presses the screen, his tablet follows his orders.
21．Many students there did not have a chance to study before the project started./Before the project started, many students there did not have a chance to study.
【解析】句意：那里的许多学生没有机会学习。项目开始了。原句两分句存在时间先后关系，应是项目启动前学生无机会，需用before引导从句，合并时需调整语序，将时间状语从句置于主句前或后，并保持时态逻辑一致。故填Many students there did not have a chance to study before the project started./Before the project started, many students there did not have a chance to study.
22．didn’t send
【解析】句意：迈克给我寄了一张我最喜欢的明星歌唱比赛的门票。原句中包含实义动词sent，时态为一般过去时，改为否定句时，需借助助动词did，否定形式为didn’t，后跟实义动词原形send。故填didn’t；send。
23．Don’t touch
【解析】句意：触摸跑步机。将其改为否定形式，需要在动词原形前加Don’t，表示“不要触摸跑步机”。故填 Don’t；touch。
24．Turn off the lights before you leave the room.
【解析】句意：关灯。你离开房间。before是连词，意为 “在……之前”。原句中“关灯”应发生在“离开房间”之前，因此将“before”置于两个分句之间，引导时间状语从句“before you leave the room”，主句为“Turn off the lights”。故填Turn off the lights before you leave the room.
25．After he finished his homework, he played video games.
【解析】句意：他完成了作业。他玩了电子游戏。要求用after改写句子，则表示为“在完成作业后，他玩了电子游戏。”，after引导的是时间状语从句，从句为“he finished his homework”，主句为“he played video games”。故填After he finished his homework, he played video games.
26．didn’t send
【解析】句意：凯伦把她的文章投给了杂志和报纸。原句是一般过去时，且含有实义动词，改为否定句时，要借助助动词“didn’t”，后跟动词原形“send”。故填didn’t；send。
27．My mother was cooking. I set the table at the same time.
【解析】句意：当妈妈做饭时，我摆好了餐具。根据“While my mother was cooking, I set the table.”可知，本句是由“while”引导的时间状语从句，强调两个动作“妈妈做饭”和“我摆餐具”同时进行。改为简单句时，时态不变。故填My mother was cooking. I set the table at the same time.
28．Did send
【解析】句意：他上周给他的朋友发了一封电子邮件。原句中“sent”是动词send的过去式，表明句子时态为一般过去时。改为一般疑问句时，需要借助助动词did，且将did置于句首，首字母大写；助动词后接动词原形，所以sent要变为原形send。故填Did；send。
29．When the bell rang, the students ran out of the classroom./The students ran out of the classroom when the bell rang.
【解析】句意：铃响了。学生们跑出教室。将第一个句子“The bell rang”改为由when引导的时间状语从句，主句是第二个句子“the students ran out of the classroom”，合并后强调“铃声响起”是“学生们跑出”的时间背景。故填When the bell rang, the students ran out of the classroom. / The students ran out of the classroom when the bell rang.
30．There was hardly anyone in the streets on the cold evening, was there
【解析】句意：寒冷的晚上，街上几乎没有人。反意疑问句通常遵循“前否后肯或前肯后否”的原则，hardly“几乎不”，是否定词，所以前半句是否定形式，疑问部分应用肯定形式，陈述句为there be句型，其中be动词为was，故反意疑问句中直接使用was there。故填There was hardly anyone in the streets on the cold evening, was there
31．The farmer didn’t feed the chickens in the early morning as usual.
【解析】句意：农民像往常一样在清晨喂了鸡。句子是一般过去时，否定需借助助动词did+not，缩写为didn’t，动词恢复原形（feed），其他不变。故填The farmer didn’t feed the chickens in the early morning as usual.
32．As soon as the rain stopped, they went to the playground.
【解析】句意：雨停了。他们去了操场。用as soon as合并句子时，as soon as引导时间状语从句，表示雨一停，他们就去了操场。故填As soon as the rain stopped, they went to the playground.
33．Wang Yiming said that he would like to make a complaint about the laptop.
【解析】句意：“我想投诉一下笔记本电脑，”王一鸣说道。直接引语是陈述句，改为间接引语时，用that引导宾语从句，直接引语中的主语I变为he，其余不变。故填Wang Yiming said that he would like to make a complaint about the laptop.
34．Many students in rural areas enjoy online lessons taught at a top school.
【解析】句意：许多农村地区的学生喜欢上网络课程。这些课程是由一所顶尖学校授课的。原句中“The lessons are taught at a top school”是描述课程的一个特点，在合并句子时，我们可以将这个特点用过去分词短语“taught at a top school”来表示，并将其作为定语修饰“online lessons”。这样，合并后的句子就变成了“Many students in rural areas enjoy online lessons taught at a top school.”，故填Many students in rural areas enjoy online lessons taught at a top school.
35．While the robots move around, they send video information to the control unit.
【解析】句意：机器人四处移动。它们向控制器发送视频信息。while引导的时间状语从句，强调两个动作同时进行，可将while放置句首，首字母大写，其他成分依次放置while后，单词“They”的首字母改为小写。故填While the robots move around, they send video information to the control unit.
36．A new type of smart walking stick can detect any object as soon as the person gets close to it./A new type of smart walking stick can detect any object as soon as the person gets close to the object.
【解析】句意：一种新型的智能手杖可以检测任何物体。人靠近物体。变为用as soon as引导的时间状语从句，从句中可用it代替“the object”，其他不变，中间用as soon as连接。故填A new type of smart walking stick can detect any object as soon as the person gets close to it./A new type of smart walking stick can detect any object as soon as the person gets close to the object.
37．can be bought
【解析】句意：人们能在网上买许多东西。原句是含有情态动词“can”的主动句，结构为“主语 + can + 动词原形 + 宾语”。变被动语态时，需遵循“宾语（变为主语）+ can + be + 动词过去分词 + 其它”的结构。原句中谓语动词“buy”的过去分词是“bought”，故填Many things can be bought on the Internet.
38．Life is made easier for the disabled by digital technology.
【解析】句意：数字技术使残疾人的生活更加便利。原句主动语态改为被动语态，原宾语life为主语，首字母要大写；原谓语动词makes变为“be+过去分词”，be动词用is，make的过去分词是made；原主语Digital technology前加介词by，Digital首字母要小写；easier和for the disabled保持不变。故填Life is made easier for the disabled by digital technology.
39．How
【解析】句意：在网上保护我们的个人信息很重要。该句中心词是形容词“important”，符合的感叹句结构为“how+形容词+主谓”。故填How。
40．Don’t turn
【解析】句意：关掉水龙头。Turn off the tap是祈使句的肯定形式，祈使句的否定形式通常是在动词原形前加Don’t。故填Don’t；turn。
41．Has changed
【解析】句意：数字技术极大地改变了我们的生活。该句是现在完成时，改为一般疑问句，需将助动词has提前，其他保持不变。故填Has；changed。
42．While came
【解析】句意：当老师进来的时候，这对双胞胎正在大声讲话。句子可改为“当这对双胞胎正在大声讲话时，老师进来了”，while后一般跟进行时态；第二空依旧用came；句子开头首字要大写。故填While；came。
43．gets off
【解析】句意：露西将给她的朋友打电话。露西将下飞机。分析题干可知，合并后的句子是由as soon as引导的时间状语从句；主句是一般将来时，从句应该用一般现在时；主语she是单数，因此谓语用第三人称单数形式。故填gets；off。
44．as soon as
【解析】句意：我到家就会再给你打电话。as soon as表示“一……就……”，在此语境下可与when互换。故填as；soon；as。
45．has more internet users than
【解析】句意：中国拥有全球数量最多的互联网用户。改写句以“No other country”开头，这是用比较级表达最高级含义的典型句型。结构通常为：“No other +单数名词+谓语+比较级+than+比较对象”。主语“No other country”是第三人称单数，谓语动词需用has。the largest number of（最多的数量）可转换为more（更多的）。 原句中的“internet users”在改写句中未出现，需填入空白处，最后加上比较连词than。
46．aware
of
【解析】句意：学生在实验室做实验时必须意识到风险。realize表示“意识到”，同义短语为be aware of，句中已有be动词，直接填aware of即可。
47．benefit
【解析】句意：运动有益于健康。原句中“be good for”意为“对……有益”，同义改写结构“be of great + 名词 + to”可表达相同含义，形容词good对应的名词形式为benefit，“be of great benefit to”等同于“be good for”，因此改写后的句子为“Sports are of great benefit to health.”。应填benefit。
48．【小题1】went/kept 【小题2】on
【解析】句意：她继续工作，没有休息。
原句中“continued”表示“继续”，可替代的动词短语为“keep on”或者“go on”，表示“继续”，后接动名词“working”。时态为一般过去时，故填kept/went；on。
49．aware of
【解析】句意：许多年轻父母意识到他们的行为对孩子的影响。原句中realize表示“意识到”，可以用“be aware of”来替换，两者都表示“认识到、意识到”。故填aware；of。
50．aware of
【解析】句意：越来越多的人意识到了低碳生活方式的重要性。原句中“realized”意为“意识到”，可用短语“been aware of”（意识到）来替换，以保持句意基本不变。故填aware of。
51．aware of
【解析】句意：小女孩没有意识到危险。改为同义句，根据“wasn’t...the danger”可知，此处应用短语be aware of，表示“意识到”。故填aware of。
52．The students were aware of the consequences of cheating, yet some still attempted it.
【解析】句意：学生们清楚地意识到了作弊的后果，但有些人仍然试图作弊。改为同义句，需替换核心短语clearly realized“清楚地意识到”，were aware of意为“意识到”，与“realized”语义相近，且符合原句语境；其余部分保持不变。故填The students were aware of the consequences of cheating, yet some still attempted it.
53．In conclusion
【解析】句意：最后，我想感谢大家的辛勤工作。根据题干要求保持原句意思不变，需填入与“To conclude”同义的短语。in conclusion也表示“最后”。首字母大写。故填In conclusion。
54．takes to
【解析】句意：我哥哥每天花两个小时玩电脑游戏。该句要求改为同义句，可以使用“It takes sb some time to do sth”结构，表示“做某事花费某人时间”，it是形式主语，真正的主语是不定式。故填takes；to。
55．As soon as he received the e-mail, he replied to it.
【解析】句意：他收到了电子邮件，并立即回复了它。分析句子可知，此处可以表达为“他一收到电子邮件，就回复了”，用as soon as引导时间状语从句，首字母大写；he作主语；received作谓语动词；the e-mail作宾语；主句中he作主语；replied to作谓语动词；it作宾语。故填As soon as he received the e-mail, he replied to it.
56．at once/right away/right now
【解析】句意：警察立即赶到事故发生地。保持句意不变，空格处可用词组at once/right away/right now表示“马上、立即”。故填at once/right away/right now。
57．right away
【解析】句意：他立刻出发，朝汽车旅馆走去。at once“立刻、马上”，与right away同义。故填right；away。
58．right away/now
【解析】句意：天开始下雨时，他们立刻回家了。at once=right away/now“立刻”，故填right；away/now。
59．What do
【解析】句意：我们可以用这款应用程序来学英语。划线部分“learn English”是做的事情，对此提问用疑问词what，句首单词的首字母需大写；不定式符号to后面用动词原形do替代原来的动作“learn English”。
60．What’s population
【解析】句意：我家乡现在的人口是3亿。划线部分“300 million”表示人口数量，对人口提问的固定句型为“What’s the population of... ”意为“……的人口是多少？”句首单词首字母大写，故填What’s；population。
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