Unit 8 Lesson 45 Let’s Sort Garbage!(共25张PPT) 课件 2023-2024学年冀教版英语八年级下册

(共25张PPT)
Unit 8
Lesson 45 Let’s Sort Garbage!
新课导入
Do you know how to sort garbage
Let’s watch a video:
1.能熟悉并能正确运用本课时的重点单词和短语
2.能用英语简单描述垃圾分类
3.掌握it做形式主语的用法
预习检测
1.The trees should 　　　　often, or it will die.
A.water B.watered C.be water D.be watered
2.It is difficult 　　　　the work on time.
A.to finish　　　　 B.finish　　　　
C.finishes　　　　 D.finishing
D
A
3.There will be_____people and _______pollution in the future.
A.more, fewer B.more, less
C.less, more D.less, fewer
4.The paper can_______again.
A.use B.be use C.be used D.be using
5.Trees can be made__ paper.
A.on B.of C.from D.into
B
C
D
知识梳理
1. Jenny has emptied two bags of garbage onto the floor.
empty此处作及物动词，意为“倒空；使……成为空的”，
可和from，onto等介词 搭配使用。
empty...from...把……从……倒出；
empty...onto...把……倒到……上。
He emptied some apples from the bag.
Danny empties two bags of garbage onto the floor.
【归纳拓展】empty的不同词性
empty 形容词, 意为“空的”, 后接名词。
例如: There is an empty bottle on the table.
动词, 意为“倒空”, 后常接表示容器的名词
【图解助记】
Empty the bottle. 　　 The bottle is empty.
2. Can I help you sort it sort v. 分类。例如：
They sorted the oranges into large ones and small ones.
Please sort these cards according to their colour.
3. Almost all of it can be reused or recycled!
1) 此句为含有情态动词的被动语态，其构成形式为：
情态动词(can / may / must / should) +be + 过去分词。例如：
The flowers should be watered every day.
Cars mustn’t be parked here.
Children can be taken to the cinema free on Children’s Day.
2) re-是前缀，意思是“再，重新”。例如：
rewrite, replay, reappear, rebuild, remarry等。
reuse意思是“重新使用，再使用”
She often reuses old envelopes.
recycle意思是“使再循环；使……重新利用，重复利用”
They recycle empty tins so as to use the metal.
4. People throw too much away!
too much修饰不可数名词或修饰比较级, 有“过分，难以接受”之意。
too many 太多，修饰可数名词的复数 much too 太……，修饰原级
1). 去年雨水太多。
There was _________ rain last year.
2). 不要吃得太多, 否则你会生病的。
Don’t eat ________, or you’ll get ill.
3). 这个比那个大得多的多。
This one is ________ bigger than that one.
4). 汽车太多。There are _________ cars.
5). 收音机太吵了，请关掉它。
The radio is _________ noisy. Please turn it off.
too much
too much
too much
too many
much too
5. There is the least amount of glass.
the least amount 意为“数量最少的……”
The fastest team dropping the least amount of hot peppers wins.
the most amount 意为“数量最多的……”
6. It can be fixed.
can be done是含有情态动词的被动语态。
fix相当于mend和repair，意思是“修理，修补”，
但fix较为口语化。mend除可以表示一般性修理外，
还可以用来表示对衣服等进行修改或修补。
7. It can all be recycled, and made into new glass.
be made into … 被制成……
He will make this skin into leather.
We can make glass into bottles.
被动语态：
This skin will be made into leather.
Glass can be made into bottles.
Danny empties two bags of garbage onto the floor.
Jenny: That's a lot of garbage! Can I help
you sort it
Danny: Yes, please. Let's put the glass
here, the metal here, the plastic
here and the paper here.
(After they sort the garbage, Danny and Jenny are surprised. Almost all of it can be reused or recycled！ They need to throw away only one small bag of garbage！)
Jenny: People throw too much away. They shouldn't waste
so much!
it做形式主语的用法
Danny: That's right. Look！There is more paper than plastic.
And there is less metal than plastic. There is the least amount of glass.
Jenny: And the most amount is paper. It is a waste to use
paper only on one side.
Danny: Hey! I found a toy car. One of the wheels is
broken. I'll take this car home and clean it. Then I'll use some glue to fix the broken wheel. When I finish fixing this car, I will give it to my little cousin, Debbie.
Jenny: Nobody should throw away a toy like this. It can be
fixed. It's not right to waste things. Look at all of the glass. It can all be recycled and made into new glass.
Danny: A lot of glass is broken. It's dangerous to leave
broken glass on the ground. Once, I cut my foot on a piece of broken glass.
Jenny: Litter can hurt people！
1. Read the lesson and write true (T) or false (F)．
1).There is a lot of garbage: glass, metal, plastic and paper. ( )
2).There is the most amount of glass and the least amount of paper.( )
3).Danny found Debbie's toy car in the garbage. (　 )
4).Danny once cut his foot on a piece of broken glass. (　 )
T
F
F
T
通过本单元Lesson 43的学习我们知道it的各种用法，
可以指时间，天气，价值和前面提到的物。观察下列例句，
看看有什么不同的用法，并总结出规律
It is a waste to use paper only on one side.
It is fun to travel!
It is not right to waste things.
It is quite easy to find in formation with this program.
They think it is rude to point with a finger.
It is dangerous to leave broken glass on the ground.
真正主语
真正主语
真正主语
真正主语
真正主语
真正主语
形
式
主
语
Example：
It is a waste to use paper only on one side.
1)．It is fun to travel!
2)．It is not right to waste things.
3)．It is quite easy to find information with this program.
4)．They think it is rude to point with a finger.
5)．It is dangerous to leave broken glass on the ground.
2. Circle the words that “it” refers to in each sentence.
Learn to learn
As we know, “it” can be used to refer to time, weather, distance or something mentioned before. Study the sentences above. Can you find other ways of using “it”？
完成下列练习：
It is difficult (go)abroad.
is a great honor for me to be invited
It is a shame (cheat)in exams
I think is easy to learn English well.
to go
It
to cheat
it
PROJECT SORT THE GARBAGE
Go for a walk around your neighbourhood. Take a bag with you and pick up any garbage you see. Wear gloves because garbage is dirty.
Bring the garbage to school. Don't throw it away!
What kind of garbage did you find Sort the garbage. Make a pile for paper, plastic, metal, glass and other things.
·How much of each type of garbage do you have
·What type do you have the least/most amount of
Do you want to throw away the garbage now Don't! What else could you do with it Think! Could you use some of the garbage again How
How could people make less garbage Talk about this and write down your ideas. Now you can take out the garbage！
How could people make less garbage？
First，people can buy fewer things. When they buy fewer things，they throw away fewer things. Second，people can reuse things. They can use things，and then they use them again. Third，people can recycle things. They can make old things into new things.
活动小结
通过观察我们发现it没 ，但在句首充当了 而
真正的主语则是 。之所以将真正的主语放在句末
是为避免 。
句末的不定式
形式主语
意思
头重脚轻
当堂检测
用括号内单词的适当形式填空
1.They (throw) away a lot of garbage yesterday.
2. It's not right ________ (laugh) at people in trouble.
3. It is a waste ______ (use).paper only on one side.
4. It is fun __________(travel).
to laugh
threw
to use
to travel
5. It is not right ________ (waste) things.
6. It is quite easy ________(find) information with this program.
7. They think it is rude _________ (point) with a finger.
to find
to waste
to point
二. 改为同义句
To help our parents do the housework is right.
___ ___ right ___ _____ our parents do the housework.
It is to help
Unit 8
Lesson 45
重点单词：
1. empty v. ＆adj.
2. litter n. ＆v.
3. metal n.
4. sort v. ＆ n.
5. plastic n. ＆ adj.
6. recycle v.
7. amount n.
重点短语：
1. the amount of
2. too much
3. throw away
4. do with
5. much too
6. Too many
7. finish doing
8. It is... to do sth