Unit 13 We’re trying to save the earth. Section A 1a~1c课件(共74张PPT)

(共74张PPT)
Unit 13
We’re trying to save the earth.
Section A
1a~1c
Lead in
Watch a video and say what you find.
To talk about pollution and environmental
protection.
2. To learn to use the sentence patterns.
used to...but now
should do sth.
3. To master key words and phrases:
litter, bottom, fisherman, coal, ugly, advantage, cost, wooden, plastic, make a difference, lead to, instead of
Words review
乱扔；n.垃圾；废弃物 ____________
底部；最下部 ____________
渔民；钓鱼的人 ____________
煤；煤块 ____________
litter
bottom
fisherman
coal
丑陋的；难看的 ____________
ugly
优点；有利条件 ____________
花费；n.花费；价钱 ____________
木制的；木头的 ____________
塑料的；塑料；塑胶 ____________
外卖食物 ____________
垃圾箱 ____________
advantage
wooden
plastic
cost
takeaway
bin
Presentation:
Will it be so beautiful in the future
The earth is polluted.
The world’s problem
Endangered animal
Pollution
desertification
Natural disasters
What kind of pollution are they
air pollution
noise pollution
water pollution
1a
Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.
loud music cars rubbish planes
littering ships factories smoking building houses mobile phones
Noise pollution
Air pollution
Water pollution
loud music, planes,
building houses, mobile phones (machines, crowds, vehicles)
cars, factories, smoking,
building houses (burning,
power plants, nuclear disposal)
rubbish,
littering,
ships,
factories
(sewage, industrial waste, pesticides)
与…有关
What does this picture talk about
Water pollution has become a serious problem.
“
”
1b
Listen and complete the sentences.
What was the problem
The river was __________. Even the bottom of the river was full of _______. There were no more _____ for fishermen to catch.
What caused the problem
People are throwing ________ into the river.
Factories are putting ______ into the river.
How should the problem be solved
We should write to the __________ and ask them to __________ the factories. Everyone should help to ________ the river.
really dirty
rubbish
fish
litter
waste
government
close down
clean up
Listen again and answer the questions.
He wants to go swimming in the river.
Because the river was really dirty. Even the bottom of the river was full of rubbish, and there were no more fish for fishermen to catch.
It used to be so clean.
2. Why doesn’t Mark want to go with Tony
What does Tony want to do later this afternoon
3. How was the river in the past
Tony: Hey, Mark, maybe we could go swimming in
the river later this afternoon.
Mark: I don’t think I want to go, Tony.
Tony: Why not
Mark: I was there last weekend and the river was
really dirty. Even the bottom of the river was
full of rubbish, and there were no more fish
for fishermen to catch.
Tapescripts:
下午晚些
河底
Tony: No way! It used to be so clean. In fact, it has
always been the nicest river in this town.
Mark: Not anymore. I think people are throwing
litter into the river. Factories are also putting
waste into the river.
不可能
再也不是啦
Tony: That’s terrible! We should write to the
government. They should close down the
factories.
Mark: Good idea! But I think everyone in this town
should help to clean up the river, too. Everyone
should play a part, not just the government.
关闭
参与
used to do sth. “过去常常……” 表示过去习惯性的动作但如今已不存在。
play a part in doing sth. “参与做某事; 在做某事上起作用”。
1c
Role-play the conversation. Then make your own conversations about the kinds of pollution in 1a.
used to do sth. “过去常常……” 表示过去习惯性的动作但如今已不存在。
play a part in doing sth. “参与做某事; 在做某事上起作用”。
1. We’re trying to save the earth!
我们正在竭尽全力拯救地球!
try to do =try one’s best to do 尽力去做某事
【翻译】
我们将努力在一周内完成这项工作。
We’ll try to finish the work in a week.
Language points
try相关短语:
try doing sth. 试着做某事
try on 试穿
try out 尝试；试验；试试
2.Here are some words related to different
kinds of pollution.
be related to 与……有关
e.g. Is the driver related to the accident
司机和这起事故有关吗？
1. Even the bottom of the river was full of rubbish.
bottom n. 意为“底部; 最下部”，通常用单数形式，反义词是top。
Sign your name at the bottom of the page, please.
请在这一页下部签上你的名字。
固定搭配at /in the bottom of 意为“在......的底部”。反义词组at the top of 在......的顶部。
My teacher has given me useful suggestions and I want to thank him from the ______ of my heart.
A. condition B. bottom C. way D. surface
B
3. Even the bottom of the river was full of rubbish.
Yes, but people are throwing litter into the river.
litter和rubbish都可指“垃圾”，用作不可数名词。
litter指“（室内或公共场所）乱扔的废物（纸屑、不要的包装纸、废瓶等）”还可回收。
rubbish指“没用的东西（被扔或将要丢弃的无用的东西）”不可回收。
4.Everyone in this town should play a part in cleaning it up!
play a part in 在……方面起作用
e.g. A good diet plays a large part in helping people live longer.
健康的饮食在帮助人们长寿方面起着非常大的作用。
2. Everyone in this town should play a part in cleaning it up!
play a part in 在……方面起作用,相当于play a role in…
A good diet plays a large part in helping people live longer.
He plays an important role in Shakespear's drama.
他在莎士比亚的戏剧中扮演一个重要角色。
健康饮食在帮助人们长寿方面起着非常大的作用。
Look and say
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 this picture What do you think has caused this pollution
Land pollution
Causes: Industrial Pollution and all kinds of human activities…
Look and say
What kind of pollution has been showed in this picture What do you think has caused this pollution
noise pollution
Causes: barking dogs, lawn mowers, power saws, motorcycles, airplanes, cars, people…
2a
Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.
land pollution B. air pollution
C. noise pollution D. water pollution
2b
Listen again and complete the sentences.
The air is badly polluted because there are __________ on the road these days.
Factories that burn coal also _______ the air with a lot of black smoke.
There is also too much rubbish and waste. People ________________ things every day.
People are also littering in ____________ like parks. This is turning beautiful places into ugly ones.
more cars
pollute
are throwing away
public places
2c
Use the information in 2a and 2b to role-play conversations between Jason and Susan.
Jason：The air has become really polluted around here. I’m getting very worried.
Susan：Yes, I used to be able to see the stars in the sky.
Jason：The problem is that…
We should walk, ride a bike, take the bus or subway instead of driving.
What are your ideas for solving the problem of air pollution
instead of 代替；而不是
We should plant more trees.
What are your ideas for solving the problem of air pollution
Use your own chopsticks when you buy takeaway food.
takeaway n. 外卖食物
What are your ideas for solving the problem of waste pollution
We should bring a bag when we go shopping.
We shouldn’t use plastic bags and throw them everywhere.
What are your ideas for solving the problem of waste pollution
We should throw rubbish in the（right）bins.
bin n. 垃圾箱
What are your ideas for solving the problem of waste pollution
2d
Role-play the conversation.
Read 2d and answer.
The main idea of it is 　　　　.
A. how to solve the pollution problems
B. the kinds of pollution
C. air pollution
A
2d
Read 2d and complete the chart.
Problems Solving problems
air pollution
waste pollution
take the bus, subway or ride a bike instead of driving.
bring a bag to go shopping.
use chopsticks or forks at home.
throw rubbish in the bins.
2d
Read the dialogue in 2d, then tell us what we can do to reduce the pollution.
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
Role- play the conversation
What are your ideas for cutting down air pollution
I think we shouldn't smoke in public.
In my opinion, we should ride bikes.
We'd better take the bus or subway instead of driving.
Close down the factories that burn coal.
It's a good idea to plant more trees and flowers.
we need to recycle books and paper and stop using paper napkins. That can help us cut down fewer and fewer trees.
...
Language Points
1. Well, to cut down air pollution, we should take ... .
cut down, 意为"减少"； 是“动词+副词”结构的短语，后面所带的宾语为名词时，宾语可以位于down的前面或后面；为代词时只能位于down前面。
e.g.
You'd better cut the article down to about 2000 words.
cut down 砍倒
People shouldn't cut down trees to make our environment beautiful.
cut off 切断；切除
cut into 把...切成...
cut up 切碎
cut in 插队
cut out 删除
拓展
To feed her little son, Mrs. Smith has to _____ the vegetables
and meat.
A. make up B. put up C. set up D. cut up
D
3. …, we should take the bus or subway instead of driving.
instead& instead of
instead为副词，意为“代替；反而”，在句中作状语。
instead of意为“代替；而不是”，后面可接名词、代词、v-ing形式或介词短语等。
Language points
1. There are other advantages of bike riding. (教材P98 2d)
advantage / d vɑ nt d /, / d v nt d / n. 优点；有利条件
advantage作名词，其反义词为disadvantage“缺点；不利条件”。
take advantage of... 意为“利用……”。
Before making your decision, you should consider the advantages and disadvantages.
When possible, take advantage of this time to enjoy the nice weather.
2. There are other advantages of bike riding.
advantage的意思是“优点;有利条件”,反义词是disadvantage,意思是“缺点,不利条件”。　　　
【拓展】　(1)have the advantage of 胜过……。
I have the advantage of him in running.我在跑步方面条件比他优越。
(2)to one's advantage 对某人有利的。
To her advantage, her voice is very sweet.对她有利的是,她的声音非常甜美。
(3) take the advantage of 利用
I want to take the advantage of this trip to buy the things we need.
2. 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。
sth. costs sb. some money 某物花费某人多少钱
【翻译】【拓展】cost还可作名词，意为“花费；价钱”。
Could you tell me the cost of the trip
1) 王先生花了200元买了新衬衫。
The new shirt cost Mr Wang 200 yuan.
2) 新电脑花了多少钱？
How much does the new computer cost
pay, take &spend
take，spend，pay都可以表示“花费”，
但用法各有不同。
1) take多表示花费时间，常用于it takes sb. some time to do sth. 这一句型中，it作形式主语。
e.g. It usually takes me 40 minutes to
cook the dinner.
2) spend多表示花费时间和金钱，主语通常是人，常用于sb. spend(s) some time / money on sth.和sb. spend(s) some time / money (in) doing sth.两种句型。
e.g. David spent 2,000 yuan on the new machine.
My father spends an hour (in)
reading the newspaper every day.
3) pay多表示花费金钱，主语通常是人，常用于sb. pay(s) some money for sth.句型。
e.g. Tommy paid 20 yuan for his
breakfast yesterday.
【易混辨析】cost, spend, take与pay
例词 主语 宾语 常用结构
cost 物 金钱 sth. cost(s) (sb.) some money
某物花费(某人)多少钱
spend 人 时间或金钱 sb. spend(s) some time/ money on sth.某人花费时间/金钱在某事/物上
sb. spend(s) some time/ money doing sth. 某人花费时间/金钱做某事
take 常用it作形式主语 时间 it takes sb. some time to do sth.做某事花费某人多长时间
pay 人 金钱 sb. pay(s) some money for sth.某人为某物付费
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. Mike __________ 50 yuan on these books just now.
3. It usually _______ us an hour to do homework every evening.
cost
spent
takes
【运用】
4. You should __________ some time learning English and math.
5. My brother _______ 6, 000 yuan for a second hand car last week.
spend
paid
( ) 1 .--What a nice table computer！How much did you ________ on it
--It ________ me 400 dollars.
A. take;paid B. cost;took C. pay；spent D. spend；cost
( ) 2. --Grandpa has changed a lot.
--So he has. He spends more time than he used to ____ games with the children.
A. play B. playing C. played D. plays
( ) 3. Lily _____ 30 yuan for the album. It was not expensive.
A. paid B. cost C. took D. spent
D
B
A
4. ... and keep public places clean and beautiful.
“keep+宾语+形容词”结构表示 “使......保持(某种状态）。
He always keeps the door closed/open.
常用的结构还有：
keep+宾语+副词
What has kept you away for so long？什么事使你离开这么久？
keep+宾语+V-ing
I'm sorry to have kept you waiting. 对不起，让你久等了。
keep+宾语+介词短语
Don't keep your hands in your pockets.不要把手放在口袋里。
4. So together, our actions can make a difference and lead to a better future!
1) make a difference (to…)
(对……)产生重大影响或作用，to是介词。
【拓展】
make no difference to 对……没有影响
make some difference to 对……有一些影响
e.g. It makes no difference whether you go
today or tomorrow.
The sea air has made some difference to
her health.
5. So together, our actions can make a difference and lead to a better future!
make a difference的意思是“有重大的影响”;
e.g.
你认为他的话会对最后的决定起作用吗？
lead to的意思是“导致,引导”。
All roads lead to Rome.条条大路通罗马。
Do you think his words would _____ _____ ______ _____ the final decision
make any difference to
2) lead to 意为“导致”。
e.g. Eating too much sugar can lead to
health problems.
【链接】
lead sb. to ... 可意为“带领某人去……”。
e.g. His pet dog Lucky led us to his house just now.
Summary
write to ... 给……写信
the bottom of the river 河底
throw litter into the river 往河里扔垃圾
clean up ... 把……打扫干净
land / air / noise / water / waste pollution 土地 / 空气 / 噪音 / 水/ 垃圾污染
turn ... into ... 把……变成……
cut down air pollution 减少空气污染
instead of 代替
be good for ... 对……有好处
takeaway food 外卖食品
Ⅰ. 根据句意及首字母提示补全单词
1.The f　　　 lost his boat in the storm.
2.It has more a　　　 than disadvantages.
3.The new bike c　　　 her 200 dollars.
4.There is much rubbish at the b　　　 of the river.
5.There is a big w　　　 table in the middle of the room.
6.This can turn the beautiful places into u　　　 ones.
isherman
dvantages
ost
ottom
ooden
gly
Exercises
一、单项选择
1.— There are a lot of ______ of bike riding.
— I agree. It’s good for the environment and it saves money.
A. instructions B. instruments
C. advantages D. products
2.My teacher has given me useful suggestions and I want to thank him from the _______ of my heart.
A. bottom B. condition C. way D. surface
A
C
Ⅱ. 单项选择。
1. --Smart phones are more and more popular now.
--So they are. But they still ________ too much.
A. pay B. cost C. take D. spend
2. We should keep the windows________ in order to let the fresh air in.
A. open B. opened C. close D. closed
B
A
3. A robot has lots of ________.It can help humans do hard and dangerous work.
A. courage B. experiences C. advantages D. knowledge
4. —Let's go hiking ________ staying at home，shall we
—Good idea.
A. as well as B. in order to C. instead of D. even though
5. Many kids laugh at Kim's looks and they think he is _______.
A. clever B. ugly C. nice D. kind
C
C
B
6. Smoking can ___ lung cancer. you'd better give it up.
A．work on B．lead to
C．take away D．put out
7. He ____ go out with his parents, but now he _____ staying at home alone.
A. use to; is used to B. is used to; used to
C. use to; used to D. is used to; is used to
B
A
Many jobs require people who are good at English. If your English is good, you will have one more ______ when searching for jobs.
method B. interest
C. advantage D. examination
中考链接
句意为“很多工作要求擅长英语的人。如果你的英语很好，在找工作的时候会拥有又一个优点。”
方法
优点
兴趣
考试
—The teenagers clean up the city park every
Saturday.
—Sometimes small things can make a _______.
A. promise B. conversation
C. difference D. discussion
中考链接
句意为“那些青少年每周六都打扫城市公园。有时候一些小事也会产生（好的）影响。”
承诺
不同
对话
讨论
1.He ___ go out with his parents, but now he ____
staying at home alone.
A. used to; is used to B. is used to; used to
C. used to; used to D. is used to; is used to
2. The interesting book ___ me 10 yuan.
A. took B. paid
C. spend D. cost
3. We must do something useful to ___ pollution.
A. cut off B. cut up
C. cut down D. cut in
4. Smoking can ___ lung cancer. You’d bettter give it up.
A．work on B．lead to
C．take away D．put out
用动词的适当形式填空。
1. We’re trying _______ (save) the earth.
2. There used to _____ (be) clean and beautiful.
3. There are too many ___ for _________to catch (fish).
4. It’s bad for environment to use _________ (wood)
chopsticks.
to save
be
fish
wooden
fishermen
Exercise
二、根据汉语提示完成句子
1.为了孩子们的发展，应该减少他们周末的学习课程。(cut)
For children’s development, their courses on weekends should ____ ____ ______.
2.我们的行动会产生很大的影响。
Our action will ______ ____ ____ _________.
3. 他们打算骑自行车，而不是开车。
They’re going to ride a bike _______ _____ driving a car.
4. 每个人都应该在环保方面发挥作用。
Everyone should____ __ _____ ___the environmental protection.
make a big difference
instead of
be cut down
play a part in
III.根据汉语意思完成句子
1.这个城镇的每个人在打扫中应该起一定的作用!
Everyone in this town should　　　　　　　　　　cleaning it up!
2.它对身体有好处,并且无需花费任何东西!
It’s 　　　　　　　　health and it doesn’t 　　 anything!
3.我在游泳方面条件比他优越。
I 　　　　　　　　　　　　him in swimming.
4.我们应该使用可再次利用的袋子而不是塑料袋子。
We should use reusable bags 　　　　　　　　plastic bags.
5.我过去常常可以看到天空中的星星。
I 　　　　　　　　able to see stars in the sky.
play a part in
good for
cost
have the advantage of
instead of
used to be
Ⅱ.根据汉语意思完成英语句子。
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. 左边第二个房间里堆满了书。
The second room on the left is _________________
books.
to cut down
full of / filled with
3. 你应该向那些参与挽救病人的医生道谢。
You should say thanks to those doctors who
have _________________ saving the patient.
played a part in
4. 拉里将去开会，而不是我。
Larry will go to the meeting __________ me.
instead of
5. 我的目的是把这件坏事变成好事。
My purpose is to ________ this bad thing
________ a good one.
6. 保持教室干净是我们的责任。
It’s our duty to ________ the classroom
_______.
turn
keep
into
clean
7. 我们小区的噪音污染很严重。
The _________________ in our neighborhood
is very serious.
noise pollution
Ⅲ.汉译英。
我尽量今天晚上看完这本书。
他在足球赛中其重要作用。
I will try to finish the book this evening.
He plays an important part in the soccer match.
Exercise
你想要做什么？
他在工作中其重要作用。
这些问题都是密切相关的。
汉译英。
What are you trying to do
He plays an important part in the work.
These problems are closely related.