内容正文:
九年级全-册
课时17 Units1~2
课前检测:请先完成《词汇情境练》P63~P65的[教材词汇拓展练]
教材核心分点过
考点1patient的用法
教材例句:Well,bepatient.总之,要有耐心。(Unit1P2)
be patient with sb./sth.
1. The happiest thing for doctors is to see their
对某人/某事有耐心
adj.有耐
patients (patient) get well.
be patient to do sth.
2. The community workers are always patient
心的 有耐心做某事
to
patient
explain
( explain) how to use computers to
n.病人(可数名词)
the old.
考点2treat的用法
教材例句:What a nice treat! 多好的款待啊!(Unit2P12)
“对待”.trecat.a..把.....
3. After hard work. I treated myself to a meal in
看作.....: treat sb. with..
以.....方式对待某人
an expensive restaurant.(盲填)
“款待;请客”,treat sb.tosth.
4. I respect my mother so much since she never treats
用某物招待某人
me as a child. but as an adult.(盲填)
“医治;治疗”, trcat thediseasc
5.苏珊在春节期间包了一些饺子款待她的朋友。
Susan made some dumplings to give her friend
治疗次病
trcat
a treat during the Spring Festival.
“款待;招待”,beone's treat
某人请客;givesb.a treat款待某人
考点③辨析discover,create与invent
教材例句:I discouered that listening to something interesting is the secrel to language learning. 我发现听一些有
趣的东西是学习语言的秘诀。(Unit1P3)
单词
含义及用法
6.
discover create invent
原刨Curiosity(好奇心)is an endless power
“发现;发觉”,指发现过去就存在但尚
discover
未被人们发现或知晓的事物,如地点。
that always pushes humans to find out the truth.
物体或事实等
Columbus traveled around the world and
discovered America. Western people used to
“创造;创建”,指从无到有地创作出原
believe that someone
created
create
the world, but
本不存在的东西,如艺术作品、理论等
Darwin doubted it and finally found it wrong. We
wanted to know more about the universe, so we
“发明;创造”,指通过研究和实验而创
invented rockets and spaceships and sent them
inwvent
造或发明出前所未有的产品或装置,尤
into space.
指科技上的发明、创造
语法链接
1.介词by+动名词(见本书P99)
3.感叹句(见本书PI07)
2.宾语从句(由that.if和whether引导)(见本书Pi20)
课时重点随堂练
小题巩基础
If we are not good at memorizing English words
I.语言运用第一节
we can look up their meanings online very soon. It
1.[2024滨州改编]这些旧衣服还完好无损。我们
helps us finish reading the English articles more
把它们捐给需要的人吧。
smoothly. If we are good language learners, we can
These old clothes are still in good condition. Let's
always learn more in a shorter time with an online
them away to people in need.
give
dictionary. It saves much time.
2. 时事热点[2024乐山改编]真是太神奇了!神舟
Wang Lan, 15
十八号成员首次在天宫空间站养鱼。
My paper dictionary is a great friend for me.
How
amazing it is! The Shenzhou
Whenever I don't know the meaning of a new word.
XVII members raise fish for the first time in
can learn it well by understanding the notes and the
Tiangong space station.
example sentences in the paper dictionary.
Meng Hao, 14
3.通过用正确的方式使用AI工具,我们能比从前
更好更快地工作。
I don't like carrving a heavy dictionary wherever
We can work better and faster than before by
I go. It's really convenient to learn a language with
using AI tools in the right way.
the help of an online dictionary. We don't need to
4.很多人对ChatGPT和其他现代科技能否取代人
spend much time looking up new words. Using an
类表示怀疑。
online dictionary makes a more effective learner.
Many people
whether ornot
Tian Xiao. 13
wonder
ChatGPT and other modern technologies could
If you want to share your opinions, please e-mail
replace human beings.
us at 18o00053407youth daily l63. com. And your
opinions will be carried on tomorrow's newspaper.
语篇练素养
1. What are the advantages of the online dictionaries
II. [2024遂宁改编]阅读第一节
according to Tian Xiao? C
人与自我-生活与学习
A. Fast and clear.
新闻报道
As language
B. Correct and believable.
: learners, it's important to use
C. Convenient and effective
dictionaries. Paper dietionaries are often great
2. Which two have the same idea among the four
choices for us. They lead us to think in a more exact
students? A
way. However, with the rapid development of the
A. Wang Lan and Tian Xiao.
Internet, many websites and apps offer us information
B. Meng Hao and Tian Xiao.
about the language we are learning, so some language
C. Wang Lan and Lin Tao.
learners like online dictionaries better. Here is what
3. What does the text mainly talk about?
some students think of the two kinds of dictionaries.
A. Opinions upon language learning.
I like to look up something in a paper dictionary
better. Their explanations are so clear that I can
B. The development of the dictionaries.
C. Ideas about paper and online dictionaries.
understand them better. I don't think some online
4. Where is the text probably from? B
dictionaries are believable. There are many incorrect
A. Magazine.
B. Newspaper.
C. Textbook.
usages which can make us confused(困惑的)
Lin Tao, 14
请完成《情境作业本》(P33~P34)中的练习题
155
课时18 Units3~4
课前检测:请先完成《词汇情境练》P66~P68的[教材词汇拓展练]
-教材核心分点过
考点7suggest的用法
教材例句:I suggest Water City Restaurant inWaterWorld. 我建议去水上世界的水城餐厅。(Unit 3 P19)
1. My neighbors suggested
building
suggeststh.(tosb.)(向某人)捉
(build)a
{议某事
green space between the buildings.
2. The doctor suggested that parents
(should) have
sggestr.
suggest doingsth.律议做某事
建议;提议
( have) more communication with their children.
suggest+that从句(从句的谓
3. Our teachers always give us some helpful
语动词川should+动词形,
suggestions ( suggest) whenever we tum to them
should可省略)建议.....
4. Most of us advised Tom to plan ( plan)a day
[拓展
out ahead of time. but he didn't listen to us.
“建议某人做某事”不能用suggestsh,todo
5.暑假马上就要到了,本提议去香港旅行。
sth..可以用 advise sb. to do sth..或用 give sh. a
The summer holiday is coming soon, and Ben
suggestion on/for/about sth.o
suggestsa
tour/trip to Hong Kong.
考点2require的用法
教材例句:You really requirea lot of talent and hardworkto succeed. 你真的需要很多天赋和努力工作才能成
功。(Unit4P27)
6. My bike is broken. It requires
require十n.要求/“要......
repairing/to be
repaired ( repair) today. so that I can ride it
sth. require(s)doing-sth. require(s)
reuire
tobedone某事需要(被)做
tomorrow.
7. The government requires schools to provide
require sh./sth. to dosth.
要求某人/某物做某事
(provide) free after-school service for both primary
require+(that)从句(从句的谓语
and secondary(中学的)school students.
8. Mom requires
动词should+动词形,should
that all family members finish
可省略)要求.....
our meal in total silence.(盲填)
9.所有乘客上车前都要出示车票。
All the passengers are required to show
their tickets before they get on the train
考3辨析 used to do sth., be/get/become used to doing sth.与 be used to do sth.
教材例句:He usedtobe so shy andquiet. 他以前很害羞,很安静。(Unit4P25)
10. As we all know, a piece of paper can be used to
词组
含义及用法
make (make)a plane.
过去常常做某事。to是不
used to do sth.
11. Sandy is a little shy girl and she is not used to
定式符号,后接动词原形
communicating ( communicate ) with new
friends at school.
5f
续表 12. Mike used
to be (be) a top student, but he
词组
含义及用法
has fallen behind since he lost himself in computer
be/get/become used to
games.
习惯于做某事。to是介词
doing sth.
13. Look! A bird is picking the sticks that would be
被用来做某事。to是不定
used for building its home.(盲填)
be used to do sth.
式符号,后接动词原形
=be used for doing sth.
考点④辨析deal with与do with
教材例句:Candy told me that she used to be really shy and took up singing to deal with her shyness. 坎迪告诉我
她过去非常害羞,于是开始用唱歌来克服她的羞怯。(Unit4P27)
词组
义
用法
_过14.
deal with do with
强调处理的方式、方法,常
1 (1)These days I'm worrying about what to do with
deal with
应对;处理
与疑问词how连用
all my schoolwork:
(2) When being asked how to
dea with
this
do with
处置:安排
强调处理的对象,常与疑问
词what连用
difficult math problem. Mr. Zhang patiently made
an explanation.
考点5辨析proud与pride
教材例句:They take pride in everything good that I do.他们为我做的所有好事情感到自豪。(Unit4 P30)
过5.
单词
词性及含义
常见搭配
pride proud
①be proud of sh./doing sth.
丽 Today is our school's sports meeting. My
为某人/做某事感到自豪/骄傲
classmate Penny broke two school records in the
②be proud to do sth. 做某事
adj.自豪的;
100 and-the 8oo meters. All her family were
proud
很自豪
骄傲的
proud of her. Penny also became the
③be proudthat从句对....
pride of the whole class. Penny was proud
感到骄傲
that she was the first student to win a game
for our class.She was proud
to receive
①the prideof......的骄傲
n.自豪;
(receive) a medal from the headmaster.
pride
②take pride in为....感到
骄傲
16.学校理所应当为这次出色的考试成绩感到骄傲
自豪
The school was rightly
proud
the
excellent exam results
语法链接
1.以wh-开头的特殊疑问词引导的宾语从句(见本书
2.usedto的用法(见本书P56)
P21)
课时重点随堂练
小题巩基础
point at other people with your chopsticks.
I. 根据语境,用所给词的正确形式填空
2. I have never dared (dare) tell him that his
1. 就文化 In China, it's impolite ( polite) to
sister used his mobile phone without even asking.
57
3. If you find it difficult to follow an English need to know is how to ask for directions. Here are
speaker (speak), don't be afraid to ask him some 1 C phrases.
to speak slowly.
Remember to be 2 A
4. I'm afraid that you have to wait a minute because Ms.
when asking for directions, and
Smith is interviewing (interview) someone now.
don't forget to say "Thank you!"
5. It was difficult to tell exactly (exact) where
“How do I get to..?" This
3 C to ask someone
the saying began, but it is possible that it was in is the simplest
for
the theatre or movie industry.
directions. When you use this phrase, the other
II. 语言运用第一节
person will either tell you which kind of transport to
1.赵闻在过去是害着且安静的人,但现在他变得
take or 4C your route(路线).
很外向。
“Where 5 C am I?" Sometimes in order to
Zhao Wen
used
to be shy and quiet, but
understand the directions well, you have to 6 B
he becomes very outgoing now.
out where exactly you are, for example, which street
2.邮局是一个可以购买邮票和邮寄信件包裹的地方。
you are on.
Post office is a place where you can buy stamps
“What is the quickest way to get to...?" For
and mail/send
letters and packages.
example, if you have to go somewhere by train, and
3.鉴于我们学校有那么多课外社团,我几乎决定 the traincomesatacertaintime,thenyouneedto
不了选哪一个。
get to the train 7A quickly. If you need to go
Since there are many after-school clubs in our somewhere fast, ask this 8 B.
school, I can hardly decide
which
0r
“Where is...?" This phrase is also useful when
tochoose.
you ask for directions. If you know you are very close
4.由于犯错可能会被嘲笑,许多学生害怕在公共
to your destination(目的地)and you just need a
场合进行演讲。
little guidance in finding the place, you can 9 A
As making mistakes may lead to being laughed at,
this phrase.
many students are afraid of giving a speech in
Now you are ready to travel to an English-
public.
speaking 1o C and to ask for directions. Enjoy
5.她骄傲地看着她的葡萄长大,她甚至开始想象
yourselves and have fun!
B. careful
1.A. hopeful
品尝果实的甜美滋味。
C. useful
She took pride in watching her grapes
2.A. polite
B.quiet
C. honest
B.skill
3. A. reason
grow, and she even started to dream of tasting the
C. way
B. change
4. A.study
sweetness of the fruit.
C. explain
5.A.hardly
语篇练素卷
B. suddenly
C. exactly
B.find
6.A. work
C. bring
III.完形第二节
B.room
7. A.station
人与社会--社会服务与人际沟通
C. building
B.question
8. A. passage
If you are going to an English-speaking country
C. language
B.miss
9.A.use
for a holiday, one of the most important things you
C. invent
B. family
10.A.school
C. country
-请完成《情境作业本》(P35~P36)中的练习题
18
课时19 Units5~6
课前检测:请先完成《词汇情境练》P69~P71的[教材词汇拓展练]
教材核心分点过
考点7avoid的用法
教材例句:He realized that Americans can hardly auoid buving products made inChina. 他意识到美国人几乎无
法避免购买中国制造的产品。(Unit5P35)
avoiddoing sth.避免做某事
1. Taking notes in class is a good way to avoid
avoid sth.= prevent sth.
forgetting (forget) important knowledge.
avoid
v.避免;可避
防正某事(发生)
2. The two-year-old girl is not old enough to keep
avoid sb./sth.=keep oneself
(she)
herself
away
from that
big
fromsb./sth.回避某人/某物
dangerous dog.
考点2doubt的用法
教材例句: Even though many people now know about tea culture, the Chinese are without doubt the ones who best
understandthe nature of tea. 尽管现在很多人都知道茶文化,但毫无疑问.中国人是最了解茶本质的人。(Unit6P43)
indoubt疑惑:拿不定主意
3. I don't doubt that he can finish the task, but I
nodoubt(用于句首或句可)
n.疑惑; =There is nodoubt that..
doubt if/whether he wants to do it.(盲填)
疑问
毫无疑....
4.豪无疑问,中国人是最懂风筝的艺术的人。
Without
without doubt毫无疑问
doubt , the Chinese are the ones
doubt
用在肯定句中时,后接if
who best understand the art of kites.
或whether从句
5.毫无疑问,贫困和健康不良时常有连带关系。
用在否定句或疑问句中时。
.怀凝
Thereisno
douhf
that poverty and poor
后接that从句
health often go hand in hand.
考点3warn的用法
教材例句:The guide warned them not to climb the mountain inbadweather. 导游鉴告他们不要在恶劣天气下
爬山。(Unit6P44)
warn sb.(not) to do sth.
6. 原即 The Longtaitou Festival falls on the second
警告某人(不要)做某事
day of the second lunar month every year. An old
warn sb. of/about sth.
saying warns (warn) that cutting your hair in
warn
提醒某人注意某事
t.答告;
the first month will bring bad luck to your uncle, so
告诫
warn sb. against doing sth.
many people get haircuts on er yue er. Eating
提醒/警告某人不要做某事
chengyao cakes, a kind of rice cake, during this
warn+that从句警告/告诫某人....
festival is a tradition in Suzhou. Although it is
delicious, parents usually warn their children not
to eat (eat) too much.
语法键接
1.一般现在时的被动语态(见本书P113)
2.一般过去时的被动语态(见本书P113)
159
课时重点随堂练
小题巩基础
5.做志愿不仅是一个很好的帮助他人的方式,还
I. 根据语境,用所给词的正确形式填空。
是一种结交新朋友、学习新技能的方法。
1. [2024 达州改编]Many heroes (hero) lost their
Volunteering is not only a great way to help
people,
but
young lives for the long-lasting peace of our country.
also a way to make new
2. 统文化 [2024 凉山州改编]The Spring Festival
friends and to learn new skills.
became aUN Floating Holiday(联合国浮动假
语篇练素养
日)in 2024 and is widely (wide) celebrated
1 III.原即完形第一节
in the world nowadays.
人与社会-历史、社会与文化
3. Tom and his parents were having supper when the
中国传统小吃--糖葫芦
phone rang(ring).
A. look B. on C. excitedly D. taste
4. A company should always pay attention to the
E. typical F. wore G. Its
quality of its products ( produce).
A student from Chongqing
地减将e There are lots of natural sights in Guizhou
who is studving in the UK
so it's known (know) as"Colorful Guizhou".
shared a traditional Chinese
II. 语言运用第一节
snack called"tanghulu" on
1.[2024乐山改编]根据交通规则,人们骑电动自行
the streets of Edinburgh. She 1 F hanfu and
车时必须戴头奋,否则将受到惩罚。
offered the snack to passersbv. A British girl saw it
People must wear helmets when they ride e-bikes
and called out 2 C "tanghulu", then the student
according to the
traffic
rules,or they
gave her a piece to try.
will be punished.
Tanghulu is a popular and
13E
snack in
2.[2024滨州改编]如今,许多孩子都爱上了剪纸,因
northern China, especially in Beijing. It is sold on a
为它可以表达想法,还能提高他们的动手能力。
stick and looks pretty with bright red haws( tli植) on
Nowadays, many children fall in love with
it. 4 G sugar coating makes it look golden and
cutting
paper
because it can express
shiny. In North America, a similar snack might be a
their ideas and improve their hands-on ability.
toffee apple. But haws are sourer than apples. So the
3.我觉得很激动,因为我刚刚偶然遇到了我的启
sweet coating gives it a different 5 D. In cold
蒙老师周老师
winters, the sugar coating becomes firm and crispy
I feel so excited beeause I have just met my first
(坚硬酥脆).
teacher Miss Zhou by
_accident.
Nowadays, vou can easily find videos about how
4.统文花中国古人发明了活字印刷术、指南针、
to make tanghulu 6 B social media. Try to make
火药和造纸术。
The movable type printing, the compass, gun
this traditional Chinese snack yourself!
--素材选自《二十一世纪学生英文报》
powder and the paper-making
were
invented
by ancient Chinese.
5请完成《情境作业本》(P37~P38)中的练习题
60
课时20 Units7~8
课前检测:请先完成《词汇情境练》P72~P74的[教材词汇拓展练]
-教材核心分点过
考点7regret的用法
教材例句:I regret talkingback,not listening toMom.我后悔顶嘴,没有听妈妈的话。(Unit 7P51)
rt:/到意
1. We regret to tell (tell) you that you failed to
regret doing sth. 后悔做了某事
pass the interview.
2. I have never regretted
(事情已经做了)
sending(send) the old
p.感到
lady to the hospital at the cost of missing class.
遗憾
regret todo sth.对做某书
感到遗憾(事情还未做)
3. Ned regretted what he said and he believed
that he would never do that again.(盲填)
regret+that/wh-从
regret{
后悔;遗献.....
4.很遗憾,我不能接受你的邀请
Much to my regret , I'm unable to accept
toone'sregret令某人遗憾的是
your invitation.
-n.懊悔
考点2manage的用法
教材例句:This way,when they start working they can manage their own lives. 这样,当他们开始工.作的时侯.
他们就可以管理好自己的生活。(Umit7P52)
manage to dosth.
.完成(团难
5. Though facing great difficulty, the doctors managed
设法做成集事
的事);应付
to save ( save) the old man in time.
(困难局面
6.原即 Ben is the
, manager (manage) of a
manage a company
managc
管理一家公司
company. Although his company is not a big one, it
:经营;理;
manageline
still requires effort to manage (manage) the
支配
合理安排时间
company. Ben is also a father of two children. He
拓展
has to manage his (he) time and take care of his
managementn.经营:管理(不可数)
own family too. Luckily, he manages to keep
managern.经理;经营者(可数)
(keep) a balance(平衡) between his work and his
family.
考点③prevent的用法
教材例句:They think the stones can prevent illness and keep people healthy. 他们认为这些石头可以预防疾病
并使人们保持健康。(Unit8P62)
prevent+n./pron.阻止/防止....
7. The government is trving to prevent the wild animals
prevent sb./sth. from being done
from being killed (kill).
阻止某人某物被......
prevcnt
prevent sb.(fron)doing sth.
8. 原即ll There is an old Chinese saying which says
.阻止:H挠
-stop sb. (from)doing sth.
“hanging an egg on children's chest(胸膛) during
-keep sh. from doing sth.
the Start of Summer can prevent them
阳止某人做某事
from
getting (get) summer diseases".
61
考点4辨析 attend, join, join in与 take part in
教材例句:I attendeda concert yesterday so it might still be in the music hall.我昨天参加了一场音乐会,所以
它可能还在音乐厅里。(Unit8P58)
9. He will certainly join us in
planting
词(组)含义
用法
(plant)
trees if he is free this Saturday.
指参加会议、典礼以及去上学、听报
出席;
10.
告等正式场合。其主体只是作为参
attend
attend join join in take part in
参加
(1) A pair of VR glasses makes it possible to
与者去听或看,不一定起积极作用
join
in a real scene instead of imaging
①指参加某个党派、团体或组织
(2)With the support of her teacher, she
took part
参加;
等,并成为其中一员,如参军等;
join
in the eompetition and won first place.
加人
②加入到某个人群中去,如:joinsh.
(3) Her success in helping the homeless people will
in (doing) sth.
encourage more and more people to join her.
参加;
多指参加小规模的活动,如“球赛。
(4)Thousands of graduates will attend the 10Oth
joinin
加入
游戏”等
anniversary celebration of the university
{ next
month.
指参加某项临时活动。强调参加
take
参加
11.当他拆礼物的时候,他的一些同伴加入进来,和
该活动,并在活动中充当一定的角
part in
色,发挥积极作用
他分享喜悦。
When he unpacked the gift, some of his fellows
joined
in and shared his happiness.
语法链接
2.情态动词must.might.could和can't表推测(见本书
1.含情态动词的被动语态(见本书P113)
p8)
一课时重点随堂练
小题巩基础
1. [2024自银改编]无论我们遇到多少困难,我相信
I. 根据语境,用所给词的正确形式填空
最终所有问题都能被解决。
1. Tom's parents said that he was old enough to make
No matter how many difficulties we have. I believe
his(he) own decision.
all problems can be solved in the end.
2. For your own safety ( safe), please don't jump
2.[2024凉山州改编]为了保护青少年的视力,专家
or run in the elevator(电梯).
建议他们远离电子产品。
3. In my opinion, young adults
(shall)
should
To protect teenagers' evesight, experts advise them
stay/keep
to
not be allowed to drive until 20
away from electronic
4. We were prevented from
(watch)
watching
products.
the performance because of the heavy rain.
3.没有任何人的支持,他怎么能让计划实施呢
5. After being saved by a doctor, the girl studied hard
How could he get the plan carried out without
1(medicine)
and has become a
medical
anyone
supporting him?
student at college.
4.我看见一个很像王丽的女孩,但我知道她不可
6. The team members cheered and
hugged
能是王丽,因为王丽正在安顺旅游。
(hug) each other excitedly after they scored.
I see a girl who looks like Wang Li but I know she
II,语言运用第一节
can't be her because Wang Li is on a
tour in Anshun
This is the most popular explanation for the
5.同时,中国的一些学校还在寒假布置了特别的
term's origin(起源), Unluckily, researchers haven'
家庭作业,让学生享受在玩要中学习的乐趣。
yet found proof that the French people ever used the
At the same
time , some schools in word"l'oeuf" to mean" zero". According to their
China also gave out special homework during the studies, the French always call the number "zero".
winter vacation to let students enjoy play-based
Another explanation has been more widely
learning.
accepted among some researchers. It says this usage
6.当飞船安全降落时,他走出飞船,向等待着他的
came from the expression"to play for love". Players
人群微笑并挥手。
who fail to score any points don't care. They play for
When it landed
safely, he walked out of their love of the game, not just for a wish to win. The
the spaceship, smiled and waved to the crowds
researchers have found written records to support this
waiting for him
explanation. But most of the records are about card
语篇练素养
games, rather than tennis. So far, nobody knows for
II 阅读第三节
sure how"love" came to mean"zero" in tennis. More
人与社会-一文学、艺术与体育
studies are needed to solve this puzzle(不解之迷)
网球术语
1. In tennis, people usually say it is a “Love-all"
Have you ever watched a tennis game broadeast
when neither player scores a point .
(播出) in English? If you have, then you probably 2. The British people call a score of zero"a
have noticed that the score "40-o" is read as"Forty
duck's egg".
to love" instead of "Forty to zero". If neither side
3. Most people believe that "love" became a word for
scores a point (that is. 0-o). then the score will be
"zero" in tennis because some fans mispronounced
"Love-all".
the French word "l'oeuf".
4. The last paragraph mainly talks about
So how did "love"
another
become a word for"zero" in
explanation for the use of "love" in tennis.
tennis?
5. Which explanation do you prefer? Why?
Most
believe
people
I prefer the first one because it seems more
believable to me./..
this expression comes from French. It is said that the
French use the word "l'oeuf"( it means "the egg")
一材多练
1. Why does the writer start the text by asking a
to mean a score of zero. This is similar to calling a
question?A
score of zero "a duck's egg" in British English.
When tennis was introduced into England from
A. To interest the readers.
France, Englishmen also called a score of zero
B. To show his opinions.
"l'oeuf". However, some tennis fans didn't know
C. To clear readers' minds.
French. They mispronounced the French word as the
2. The underlined word "proof" in Paragraph 4
means a thing that B.
English word“love" ( the two words are close in
pronunciation). Over time, "love" ended up with a
A. needs careful research
B. shows something is true
new meaning: a score of zero.
C. offers wrong information
请完成《情境作业本》(P39~P40)中的练习题