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Unit13 We're trying to save the earth!
Section A Period2同步练习
用括号中所给单词的适当形式填空。
1.Waste paper and bottles ________________(collect) for recycling.
2.Could you please turn down the TV Your brother___________(review) his lessons.
3. All of us ____________ (pass) the exam. How happy we are!
4.Three patients __________________(operate) on by the famous doctor in the past 10 hours.21教育网
5.Mike missed the chair and fell down.Luckily，he was not ______(bad) hurt.
6.Everyone should ________ (have) dreams and work hard to achieve them.
7.All the students in our class took part in________(clean)up the park last Saturday.
8.There used to ________ (are) many trees around our school.21·cn·jy·com
单选。
1.Her rich experience gave her a(n) ________ when looking for a good job.
A．condition B．idea C．purpose D．advantage
2.Mike used to be a top student, but he ________behind since he lost himself in computer games. 21世纪教育网版权所有
A．fell B．has fallen C．was D．has been
3.They walked home last night because they couldn't ________ to take a taxi.
A．leave B．buy C．afford D．allow
4. The government has ________ to cut down school violence(暴力)．
A．taken action B．taken part in
C．paid for D．looked after
5.—This dress looks beautiful on you.How much is it 21cnjy.com
—It ________ me more than five hundred yuan.
A．spent B．paid C．took D．cost
6.— ________ I take some photos in the hall
— No, you ________. Look at the sign “No photos”!www.21-cn-jy.com
A. Can; needn’t B. Must; mustn’t
C. Should; needn’t D. May; mustn’t
7.Someone _________ at the door. Can you open it 2·1·c·n·j·y
A. knocks B. knocked
C. is knocking D. was knocking
8.He is very surprised that all the houses in the village ________ white.
A．paint B．painted C．are painting D．are painted
三、完成句子。
1．工人们正在竭尽全力降低事故率。
The workers are doing all they can ________ ________ ________ the accident rate.
2．我的家乡的天空过去常常是蓝色的。
The sky in my hometown ________ ________ ________ blue.【来源：21·世纪·教育·网】
3．我们的行动会使它变得不同，并通向更好的未来。
Our action can ________ ________ ________ and lead to a better future.
4．旧的楼房已经被拆除了。
The old buildings __________ __________ ________ ________.
5．我们很高兴看到我们的城市在过去的几年里变得越来越美丽。
We are happy to see our city ________ ________ more and more beautiful in the ________ ________ ________ ．21·世纪*教育网
Unit13 We're trying to save the earth!
Section A Period2同步练习答案
一、1.are collected 2.is reviewing 3.have passed 4.have been operated
5.badly 6.have 7.cleaning 8.be
二、DBCA CDCD
三、1.to cut down
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Unit 13
We're trying to save the earth!
SectionA Period 2
人教新目标(Go for it)九年级全册
Warming-up
Let's enjoy a video.
Revision
What kind of pollution has been showed in this picture What do you think has caused this pollution
Air pollution.
The sky is grey and people are usually wearing masks when they are in the open air.
Causes: a huge number of automobiles and coal-burning…
Look and say.
What kind of pollution has been showed in these pictures What do you think has caused this pollution
Land pollution(water pollution)
Causes: Industrial Pollution and all kinds of human activities…
What kind of pollution has been showed in these pictures What do you think has caused this pollution
noise pollution
Causes: barking dogs, lawn mowers, power saws, motorcycles, airplanes, cars, people…
Vi·deo
Video time
Let's watch the video.
1. What are they talking about
They are talking about the ideas for solving the problems of pollution.
2. What are the advantages of bike riding
It can cut down air pollution.
It’s good for health and it doesn’t cost
anything!
Answer the questions.
New lesson
3. What kinds of simple things are mentioned
Bringing a bag to go shopping can help.
4.Do you think your actions can make a difference and lead to a better future
Yes.Everyone plays an important part in
saving the earth.
Never take wooden chopsticks or plastic forks when you buy takeaway food.
Throw rubbish in the bins and keep public places clean and beautiful for everyone.
Read 2d carefully and complete the chart.
Pollution kind Person How to solve
air pollution Jason take a ________
Susan ride________
waste pollution Jason go shopping with ________ .
Susan never use wooden ________or plastic forks
throw rubbish
________
bus/subway
a bike
a bag
chopsticks
in the bins
Interviewer: Jason and Susan,what are your ideas for solving these problems
Jason: Well,to cut down air pollution,we should take the bus or subway instead of driving.
Susan: Yeah,or ride a bike. There are
other advantages of bike riding. Interviewer: Great ideas!What about
waste pollution
Listen and repeat.
2d
Susan: Mmm, I think simple things like bringing a bag to go shopping can help. I started doing that a year ago.
Jason: Me,too. Also, I never take wooden chopsticks or plastic forks when I buy takeaway food. I use the ones at home.
Susan: And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.
Interviewer: So together, our actions can make a difference and lead to a better future！
1.Well,to cut down air pollution,we should take the bus or subway instead of driving.
cut down 减少
cut down 砍倒； 减少 People cut down many trees so a lot of
animals lose their homes.人们砍倒了很多树，因此大量的动物失去了它们的家。
cut off 切掉 The doctor had to cut off his arm to save his life.为了挽救他的生命，医生不得不将他的胳膊截肢。
cut out 删除 You can cut out the unimportant details.
你可以删掉不重要的细节。
cut up 切碎 Cut up the meat，please.请把肉切碎。
2.There are other advantages of bike riding.
advantage的意思是“优点;有利条件”,可作可数名词，也可作不可数名词.反义词是disadvantage,意思是“缺点,不利条件”。
e.g.His sister has many advantages.他的姐姐有很多优点。
advantage的相关短语：take advantage of... 利用……be/work to one’s advantage 对某人有利
eg: I have the advantage of him in running.我在跑步方面条件比他优越。To her advantage,her voice is very sweet.对她有利的是,她的声音非常甜美。
3.It’s good for health and it doesn’t cost anything!
cost v. 花费；使付出.指花费金钱，主语通常是物。cost的过去式和过去分词均为cost。
e.g.The new shirt cost Mr Wang 200 yuan.
王先生花了200元买了新衬衫。
How much does the new computer
cost 新电脑花了多少钱？
【辨析】
take，spend，pay和cost都可以表示
“花费”，但它们的用法各有不同。
spend的主语为人 spend…(in)doing sth.做某事花费时间、金钱;spend…on sth\在 ……花费时间、金钱。 I usually spend an hour(in)reading English every morning.每天早上我通常花1小时时间读英语。
take的主语为形式主语it It takes sb.some time /money to do sth.某人花费一些时间(金钱)去干某事。 It takes me five minutes to go to school by bus.我上学乘公共汽车需要花费5分钟。
pay的主语为人 sb.+pay(+sb.)+some money+for sth.某人为某物花费(某人的)金钱。 I have paid much money for the computer.我买这台电脑花了很多钱。
cost的主语为物 sth.cost sb.some money某物花了某人多少钱。 The watch cost me 120 .我花了120元买了这块手表。
根据句意用take, spend, pay或cost的适当形式填空。
1. That new car ________ them lots of money.
2. Mona __________ 50 yuan on the books just now.
3. It usually _______ me an hour to do my homework.
4. You should __________ some time practising your pronunciation.
5. My brother _______ 6, 000 yuan for the new computer yesterday.
cost
spent
takes
spend
paid
4.So together,our actions can make a difference and lead to a better future!
make a difference (to…)表示(对……)产生影响或作用;lead to的意思是“导致,引导”。
e.g.All roads lead to Rome.条条大路通罗马。
有关difference的短语：
make no difference 对……没有影响
make some difference 对……有些影响
make a difference between 对……区别对待
eg: Learning English well can make a difference to your future.学好英语会对你的前途有影响。
The new teacher always encourages little Tom. This has made a big difference to him.
新来的老师总是鼓励小汤姆，这对他影响很大。
Can you translate the following into English
减少
代替（做某事）
骑自行车（名词）
对...有好处
外卖食品
记得要做某事
产生影响或作用
导致,引导
cut down
instead of doing sth
bike riding
be good for
take away food
remember to do sth
make a difference
lead to
1. Read the dialogue. 能够与小组成员合作朗读对话。
2. Role—play the dialogue. 语音、语调准确，能够表演对话。
3. Make a new dialogue. 编制新对话。
Role play
Role-play the conversation.
1. We should take _______ or _______ instead of driving.
2. We should also _______ ______ _____. It’s good for health!
3. Bring ___________ to go shopping.
4. Never take _________________ or __________ when buying takeaway food.
5. ______________ in the bins and keep public places clean and beautiful.
the bus
subway
ride
a
bike
a bag
wooden chopsticks
plastic forks
Throw rubbish
What can we do to reduce the pollution in 2d
Consolidation
We’re trying to save the earth. Present progressive
The river used to be so clean. used to
The air is badly polluted. Passive voice
No scientific studies have shown that shark fins are good for health. Present perfect
We should help save the sharks. Modal verbs
Grammar Focus
现在进行时: Present progressive
定义：表示说话时(瞬间)正在进行的动作, 也表示目前或现阶段正在进行的动作。
结构: be (am/is/are) + v.-ing
① 肯定句: 主语 + am/is/are + -ing
② 否定句: 主语 + am/is/are + not + -ing
③ 疑问句: Am/Is/Are + 主语 + -ing
标志词：Look, Listen, now, right now…
e.g. She is watching TV now.她现在正在看电视。
Look！The panda is climbing a tree.
看！那只熊猫正在爬树。
used to do与be used to doing
used to do sth. 表示过去常常做某事, 而现在往往不做了, 后接动词原形。
be used to doing sth. 表示习惯于做某事
1. 她过去常常周末和朋友闲逛。
She used to hang out with friends on weekends.
2. 他习惯晚睡。
He is used to staying up late.
被动语态：Passive voice
定义：表示主语是动作的承受者，即行
为动作的对象的一种语态。
结构：be + 过去分词
e.g. The book was written by Lu Xun.
这本书是由鲁迅写的。
注意：主动语态中，在make，let，hear，see，watch，notice等词后跟省略to的动词不定式，但在被动语态中，to不可省略。
eg：We saw a stranger enter the hall.→
A stranger was seen by us to enter the hall.
我们看到一个陌生人进入了大厅。
1. (2017·河北)
Hangzhou ________ as the City of Silk. Tourists like shopping for silk there.
A. knows B. is known C. was known D. will be known
2. (2017·安徽)
Mr. Green ________ to sing an English song at the party and he sang well.
A. was invited B. invited C. is invited D. invites
中考链接
B
A
现在完成时: Present perfect
定义：表示动作已经完成, 但对现在造成影
响; 或者表示从过去某一时间开始一
直延续到现在并还可能持续下去的
动作。
结构: has/have + 过去分词
标志词：already, yet, ever, never, since, for…
e.g. I haven’t finished my homework yet.
我还没完成我的作业。
Complete the following sentences.
I _________ (be) in Beijing for two years.
2. I _____ never _____ (hear) of that
man before.
3. Tom __________ (work) there since
two years ago.
4. The twins ___________ (wash) the clothes for an
hour.
5. He _________ (play) basketball since three years
ago.
6. How long ____ Sally _____ (sing) yet
Exercise
have been
have
heard
has worked
have washed
has played
has
sung
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情态动词
情态动词本身有一定的词义, 表示说话人的情绪、态度或语气, 但不能单独作谓语, 只能与其他动词构成谓语。 常见的有: can (could), may (might), must, need, shall (should), will (would)等。
情态动词无人称和数的变化, 后接动词原形。否定式是在情态动词后面加not。个别情态动词有过去式形式, 可用来表达更加客气、委婉的语气。
Translation.
1. 我们不能在教室里吃东西。
2. 首先你必须完成作业。
3. 他现在不可能在家。
4. 她一定知道这个问题的答案。
Exercise
We can’t eat in the classroom.
You must finish your homework first.
He can’t be at home now.
She must know the answer to this question.
4a
Fill in the blanks with the correct forms of the verbs in brackets.
Joe: _____ you ever ______ (take) part in
an environmental project
Eric: Yes, I have. I ______ (help) with a
Clean-Up Day last year. It was
__________ (consider) the biggest
clean-up project this city ____ ever
____ (have).
Have
taken
helped
considered
had
had
参加
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Joe: How many people ____ (take) part
Eric: I _____ (think) more than 1,000
people ______ (come) to help out.
Joe: That’s fantastic! I guess everyone in
this city is ______ (try) to improve
the environment.
Eric: Yes, we can’t afford to ____ (wait)
any longer to take action!
took
think
came
trying
wait
v. 承担得起(后果); 买得起
We can’t afford to wait any longer to take action!
afford意为“承担得起(后果);买得起”,afford sth.表示“承受得起某物”,afford to do sth.表示“有能力做……,负担得起……”常与can, be able to连用。
e.g.We can’t afford to pay such a price.
我们付不起这个价钱。
Dancing affords us pleasure. 跳舞给我们带来快乐。
【辨析】afford & buy
afford侧重“有经济能力买”，而buy则侧重
“购买(这一行为)”。表示“我买不起……”
可以说I can’t afford ...，但不能说I can’t buy ...。
4b
Fill in the blanks with the appropriate modal verbs from the box.
can would could have to should must may/ might
People __________ think that big things
_____________ be done to save the earth. Many forget that saving the earth begins with small things. For example, you __________________
save electricity by turning off the lights when
you leave a room. You ________________ also use reusable bags instead of plastic bags.
may/might
must/ have to
can/ could/ should
could/ can/ should
adj.可重复使用的
I think it’s a great idea that you now ______ pay for plastic bags in some stores. And instead of driving to school or work, you ________________ ride your bike or walk. If it’s far, you __________ take the bus. All these small things __________ add up and become big things that _______________ improve the environment. Let’s take action now!
can would could have to should must may/ might
have to
can/should/ could
can/could
can/ could
would/can/ could
采取行动
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4c
Make a list of things that people can do to help the environment and discuss your list with your partner.
use public transportation
_________________________
bring a bag to go shopping
A：I think that everyone should use public transportation.
B：I disagree. It’s difficult for parents with young
children to use public transportation...
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