Unit 2 Topic 3 What can we do to protect the environment? Section B 课件(共22张PPT，内嵌音频) 2024-2025学年英语

(共22张PPT)
Unit 2
Saving the Earth
Topic 3
Section B
1.学习目标
3.重点探究
2.自主学习
学习导航
5.当堂检测
6.课堂总结
4.拓展提升
新课导入
Let’ watch the video and talk about it.
学习目标
1. 能熟悉并正确运用本课时的重点单词和短语
2. 能通过阅读文章，了解如何成为一名环保者
自主学习
New words
ought to modal v. 应该
shut off 停止，关掉
electricity n. 电；电能
distance n. 距离
cloth n. 织物，布料
action n. 行动；行为
after all 毕竟；归根究底
重点探究
1a Look, listen and say.
Jane: Hi Michael.Would you like to be a greener person
Michael: Of course, I'd love to. But what should I do
Jane: First, you ought to shut off the electricity when you leave a room.
Michael: Oh,that's easy. What's next
Jane: Second, you'd better walk or ride a bike instead of taking a bus or a
taxi if you travel a short distance.
Michael: That's right. It will save energy and reduce air pollution.
Jane: Third, take a cloth bag when you go shopping. Don't use plastic bags.
Michael: It's so easy to be a greener person.
Jane: Easier said than done.
Michael: Well, actions speak louder than words.
Discussion
How to be a greener person
First, don't spit anywhere in public.
Second, we should use cloth bags.
Third, we should turn off the light in time.
Finally, we shouldn't throw litter aroud.
环保人士
Don't cut down trees.
Don't pick flowers.
Don't walk on grass.
Don't spit anywhere in public.
Don't pour waste water into streams.
We shouldn't leave rubbish here and there.
waste energy
We ought not to…
1b Listen to 1a and choose the correct answers.
1. Jane and Michael are mainly talking about _______.
A. why we should shut off the electricity when we leave
B. what we should use when we go shopping
C. how to be a greener person
2. “Actions speak louder than words” means ________.
A. words are not as loud as actions
B. to do well is better than to say well
C. actions can speak, but words can’t do it
C
B
Watch the video about 1a then role play.
1c Read 1a and complete the table.
To be a greener person
1._______________________________when you leave the room.
2. If you travel a short __________, you shouldn’t _________________ , but ________________. So this helps to ___________ and __________________.
3. When you go shopping, you’d better _____________ instead of using ____________.
You ought to shut off the electricity
distance
take a bus or a taxi
walk or ride a bike
save energy
reduce air pollution
take a cloth bag
plastic bags
2 Choose the correct verbs or phrases to complete the statements.
Then match them with the right pictures.
shut off reduce grow recycle ride cover use
_______ waste. Don’t buy cups or boxes which can be used only once.
Save electricity. ________ the electricity when you are not using it.
________ boxes and plastic bottles.
________ fruit and vegetables yourself.
Try to ______ a bike when you travel.
______ both sides of the paper.
________ pans when you are cooking.
Reduce
Shut off
Recycle
Grow
ride
Use
Cover
( )1. Reduce waste. Don’t buy cups or boxes which
can be used only once.
( )2. Save electricity. Shut off the lights when you
are not using them.
( )3. Recycle boxes and plastic bottles.
( )4. Grow fruit and vegetables yourself.
( )5. Try to ride a bike when you travel.
( )6. Use both sides of the paper.
( )7. Cover pans when you are cooking.
A
B
C
D
E
F
G
E
A
D
C
G
B
F
3 Read the passage and fill in the blanks with the correct words.
Then listen and check. The first letter of each word is given.
The earth is our home. Some things we have done are good for the earth w_____ some are bad. We have polluted the earth, a_____ it is sick now. We c_____ down too many trees, so lots of rich land has c_______ into desert. Factories p____ waste water into rivers. Pollution has caused many s_____ problems. The earth is crying for help.
What shall we do to save it We should plant more trees, r________ the waste we produce, r_______ the waste paper and soft drink cans, and ride bikes to reduce air pollution. I think we should try to be g_______ people to protect our earth. After all, we have only one earth. We should do e_________ to protect it, or we’ll be punished and lose our home.
hile
nd
ut
hanged
our
erious
educe
ecycle
reener
verything
4 Work in groups and survey your group members about what
they do to be greener people. Then report it to your class. Pay
attention to the stress, liaison, incomplete plosion and intonation.
Example:
A: 'Wha(t) do you 'often 'do to be a 'greener person
B: Well. 'I 'always 'shut off the electricity when I 'am not
'using it.
A: 'Good. 'What about you, 'John
C:…
拓展提升
Language points
1. You ought to shut off the electricity when you leave a room.
你离开房间的时候应该随手关灯。
※ought to 情态动词, 表 “应该；应当”；语气比 should 强；指道义上应该做的事，有时含有责备或督促的语气。should 指主观上感到有责任或义务去做。
※ought to 是情态动词，无人称和时态、数的变化，后接动词原形；
eg:
You ought to help your mother do some housework.
你应该帮你妈妈做些家务。
We should study hard.我们应该努力学习。
※其否定式和疑问式：
① ought to 的否定式： ought not to + v. =oughtn’t to +v.
② ought to 的疑问句形式是将ought提前即可。
eg:
You oughtn't to get up so late in the morning.
你早晨不应该起这么晚。
—Ought I to tell her the bad news 我该告诉她坏消息吗？
—Yes, you ought.
—No, you oughtn't.
2. You’d better walk or ride a bike instead of taking a bus or a taxi.
※ instead of 是动词短语，意为“代替”， 其后接名词、动名词、代词。
※ instead 是副词，意为“代替，替代”。常放在句末或句首，后不接其他词。
※ take the place of意为“代替……,取代……,接替……的位置”，可作谓语。
3. It’s so easy to be a greener person.
成为一名环保者真容易。
※ It is / was +adj. + to do sth. 句型中的it是形式主语，真正的主语是 to be a greener person。
类似的句型有 It is / was +adj. + of / for sb.to do sth. 。
※ 当用形容词来描述人的性格、特征、品质时，通常选用of, 这类形容词有 good, kind, nice, wise, clever, foolish, right, wrong, careful 等。
eg:
It’s nice of you to come. 你能来实在太好了。
※ 当形容词用来描述事物的性质、特征时，通常选用for, 这类形容词有easy, difficult, hard, important, necessary, possible, interesting等。
eg:
It’s very important for everyone to protect the environment.
对每个人来说，保护环境都很重要。
4. Easier said than done. 说得容易，做得难。
5. Actions speak louder than words. 百说不如一干；事实胜于雄辩。
同义句改写。
1. That lady is my new English teacher. She is wearing red clothes.
The lady ________ ________ is my new English teacher.
2. With a polite good-bye, Mr. green left the house.
________ ________ good-bye politely, Mr. Green left the house.
3. I spent four hundred yuan in buying that recorder.
That recorder ________ ________ four hundred yuan.
4. “Can I borrow your bike ” he asked me.
He asked me __________ I ________ ________ him the bike.
5. There are more people in America than in England.
The __________ in America is ________than ________ in England.
当堂检测
in red
After saying
cost me
if/whether could lend
population larger that
课堂总结
Unit 2
Topic 3
Section B
重点短语句型：
instead of ；ought to
It is/was +adj.+ to do sth.
如何成为一名环保者