冀教版八年级下册Unit 8 Save Our World Lesson 44 Environment Clubs课件(共32张PPT)

(共32张PPT)
Lesson 44: Environment Clubs
Unit 8 Save Our World
单词：least, pollute, waste, shut, reduce, reusable, skip, packaging, leaky, litre, sink, electricity
短语：throw away; neither... nor...; shut down
句子： (1) Environment clubs encourage students to bring their lunches in reusable bags and dishes.
(2) It’s a good way to reduce packaging.
(3) On a no-car day, nobody comes to school in a car—neither the students nor the teachers!
Learning Goals
1
掌握及了解有关环保的单词和短语；能读懂并说出减少污染从而保护环境的有效办法。
2
Free Talk
What can we do to save the earth
Presentation
In North America, many students join environment clubs. In an environment club, students work together to reduce pollution and protect the environment. The following is a list of their activities and advice.
I’m a member of an environment club.
·No-garbage lunches: How much garbage do you throw away after lunch Environment clubs encourage students to bring their lunches in reusable bags and dishes. The class with the least garbage gets a prize.
·No- car days: On a no- car day, nobody comes to school in a car—neither the students nor the teachers! Cars pollute our air, so remember:
Walk, skip, bike or run.
Use your legs! It’s lots of fun!
·Bring your own shopping bag! Bring your own bag when you go shopping. It's a good way to reduce packaging.
·Save water! Did you know that a leaky toilet can waste 20 to 40 litres of water an hour In a year, that would fill a large swimming pool! In environment clubs, students fix leaky toilets and sinks.
·Save electricity! Turn off the lights when you leave a room. Turn off the television and shut down the computer when you are not using them.
Let’s work together to make our environment clean. Could your school do some of these things
New words
reduce
reusable
least
pollute
skip
packaging
leaky
n. 减少
adj. 可重复使用的
adj. & adv. 最少的（地）最小的（地）
n. 最小量；最小物
v. 污染；弄脏
v. 跳跃；跳绳
n. 包装
adj. 渗漏的
waste
litre
sink
electricity
shut
throw away
shut down
v. & n. 浪费
n. 公升
n. 水槽；水池
n. 电
v.关上；合上
扔掉
关闭；停下
Let's do it!
2. Fill in the blanks with the correct forms of the words in the box.
1. The soap factory _________ the drinking water in this area.
2. Students should not ________ paper.
3. ________ knows when life on the earth started.
4. He who talks the most knows the ________.
5. I couldn’t ________ the window because it was stuck.
waste least nobody shut pollute
Nobody
polluted
waste
shut
least
Read the lesson and answer the questions.
1. Why do many students join environment clubs in North America？
Because they want to reduce pollution and protect the environment.
2. Why do the students take their own bags when they go shopping？
Because it’s a good way to reduce packaging.
Reading and Answering
3. How do the students in an environment club save water？How do they save electricity？
　They fix leaky toilets and sinks. Turn off the lights when they leave a room. Turn off televisions and shut down computers when they are not using them.
Let's do it!
3. Read the passage and fill in the blanks.
In some countries of the world, people have started to reduce the amount of garbage they make. How First, they buy ________ things. They try to buy only what they really need. When you buy fewer things, you ________ away fewer things. Second, they reuse things. They use things, and then they use them again! Third, they recycle things. They make old things into new things. People call these the “three Rs”: reduce, _______ and ________. The three Rs help us remember that __________ is a problem.
fewer
throw
reuse
recycle
garbage
Language points
1. In an environment club，students work together to reduce pollution and protect the environment. 在环境俱乐部，学生们一起工作来减少污染，保护环境。
reduce v.减少。其反义词为increase(增加)。常用短语：reduce to减少到……；reduce by减少了……
※ The number of the students has reduced to 200 this year.
今年的学生数量已减少到了二百人。
2. How much garbage do you throw away after lunch？午饭后你们扔掉多少垃圾？
throw away丢掉，扔掉。它相当于throw out / throw off。该短语是动副型短语，当宾语是代词时，要放在throw与away之间；当宾语是名词时，置于throw与away之间或away之后均可。
※ Don’t throw away the old bottles. They are still useful.
不要扔掉这些旧瓶子。它们还有用。
throw 构成的短语：
3. Environment clubs encourage students to bring their lunches in reusable bags and dishes.环境俱乐部鼓励学生用可重复使用的袋子和餐具带午餐。
encourage v.鼓励；激励。
常用结构：
encourage sb. to do sth. 鼓励某人做某事
encourage sb. in sth. 在某事上鼓励或支持某人
※ My mother encouraged me to have a try.
我母亲鼓励我试一试。
※ Her father encourages her in her drawing.
她的父亲在她的绘画方面鼓励她。
4. The class with the least garbage gets a prize. 垃圾最少的班级可以获奖。
least是little的最高级形式，意为“最少”，修饰不可数名词。最高级前面通常要用定冠词the。
※ Tom drank the least milk among the three boys.
这三个男孩中，汤姆喝的牛奶最少。
5. It’s a good way to reduce packaging. 减少包装是一个好方法。
该句中to reduce packaging是动词不定式短语作后置定语，修饰way。此句可转化为一个含定语从句的复合句：It’s a good way (that) you reduce packaging.
way在此作“方式、方法”讲，其后可接动词不定式(短语)、of短语及that/in which引导的从句作定语，that/in which可省略。
※ It’s a good way to practice spoken English.
＝It’s a good way of practicing spoken English.
＝It’s a good way (that/in which) you practice spoken English.
那是一个练习英语口语的好方法。
6. Did you know that a leaky toilet can waste 20 to 40 litres of water an hour？你知道一个漏水的马桶一小时能浪费20到40升水吗？
waste v.浪费
waste time / money on... 在……方面浪费时间/金钱
waste time / money (in) doing sth. 浪费时间/金钱做某事
※ Don’t waste time on it anymore.
不要再在它上面浪费时间了。
※ You are wasting your time (in) trying to explain it to him.
你努力跟他解释这件事是在浪费时间。
waste可作名词，意为“浪费，滥用”，是不可数名词，但可与a连用；作为“垃圾；废物”讲时，常用复数形式，recyclable wastes可再循环的废物。常用句型为：
※ It’s a waste of time/money to do sth.
做某事是浪费时间/金钱。
※ It’s a waste of time to talk to him.
跟他谈话就是浪费时间。
7. Turn off the television and shut down the computer when you are not using them.当你不看电视或不用电脑的时候，请关掉它们。
(1)辨析：turn off，turn on，turn up与turn down
turn off 意为“关掉，关闭”，一般指关闭电源、水等，后面常接电器、仪器等。
turn on 意为“打开”，一般指打开电源、水等，后面常接电器、仪器等。
turn up 调大电器等的频率、音量等。
turn down 调小电器等的频率、音量等。
※ Please turn off the radio. My grandma is sleeping.
请关掉收音机，我的奶奶正在睡觉。
※ Could you please help me turn on the TV
你能帮我打开电视吗？
※ I can’t hear clearly. Please turn up the MP3.
我听不清楚。请调大MP3的音量。
※ He turned down the radio.
他调小了收音机的音量。
(2) shut down也可译为“关闭；停下”。它强调机器等停止运转，可指关闭窗户等，也可指关闭公司、工厂、店铺等。
※ The restaurant shut down last year.
这家饭店去年倒闭了。
※ But the company shut down in 1995.
但这家公司在1995年关闭了。
Practice
I.根据句意及首字母或汉语提示写出单词。
1. Chemical wastes _________(污染) the rivers and streams.
2. You should not __________(浪费) food when many people are hungry.
3. We should take ________(可重复利用的) bags for shopping.
4. Mr. Smith can drink five _____ (公升) of beer.
5. It _______ (减少) the risks of heart disease.
pollute
waste
reusable
litres
reduces
Ⅱ.单项选择。
1. How can we buy the most things with _______ money
A. little B. less C. least D. the least
2. You should_______ the computer when you're not using it.
A. turn on B. shut down C. cut down D. put on
√
√
Ⅲ. 根据汉语意思完成句子，每空一词。
1. forget, off, lights, don’t, the, turn, to
____________________________________________________!
2. walk, days, people, no-car, to, on, work
____________________________________________________.
3. much, garbage, do, how, people away, throw, every,
day
____________________________________________________
4. our, it’s, to, the, duty, environment, protect
____________________________________________________.
5. to, mother, encourages, work, often, me, hard
____________________________________________________.
Don’t forget to turn off the lights
People walk to work on no-car days
How much garbage do people throw away every day
It’s our duty to protect the environment
Mother often encourages me to work hard
Sum up
1. The new words：
least, pollute, waste, shut, reduce, reusable, skip, packaging, leaky, litre, sink, electricity
2. Important phrases:
throw away; neither... nor...; shut down
3. Important sentences:
(1) Environment clubs encourage students to bring their lunches in reusable bags and dishes.
(2) It’s a good way to reduce packaging.
(3) On a no-car day, nobody comes to school in a car—neither the students nor the teachers!
Homework
1. Remember the new words and expressions learnt in this lesson.
2. Preview Lesson 45.