Unit 13 We're trying to save the earth!Section A (3a-4c) 课件 2023-2024学年人教版九年级英语全册 (共21张PPT)

(共21张PPT)
Unit13
We’re trying to save the earth !
（3a-4c）
一、导学
二、教学目标
1.学习生词P99-100
2.掌握词组
3.掌握重点词汇的用法
4.熟读并理解短文3a
三、探究学习
知识点（一）：
学习新单词，单词表P99-100的生词
知识点（二）：翻译词组
1.拯救鲨鱼
2.听说
3.特别受欢迎
4.在中国南方
5享受一碗鱼翅汤
save the sharks
hear of
be especially popular
in southern China
enjoy a bowl of shark fin soup
6.杀死一整条鲨鱼
7.切除，割掉
8.捕捉鲨鱼
9.把鲨鱼扔回到海洋
10对环境有害
11.处于食物链的顶端
kill a whole shark
cut off
catch sharks
throw the shark back into the ocean
be harmful to the environment
at the top of the food chain
12.给所有的海洋生物带来危险
13太强壮了而不能频临灭绝
bring danger to all ocean life
①too strong to be endangered
②can never be endangered because they are the strongest
14.在过去的20至30 年里
15.有些种类鲨鱼的数量
in the last / past 20 to 30 years
the numbers of some kinds of sharks
16.到目前为止
17.处于危险中
18.支持这一点
so far
(be)in danger
support this
19.竭力拯救地球
20.帮助拯救鲨鱼
21.参加环境工程
22.在某方面帮忙
try to save the earth
help save the sharks
take part in an environmental project
help with
23.来帮忙/帮助解决困难
24.竭力改善环境
25.迫不及待地想采取行动
come to help out
try to improve the environment
can’t afford to wait any longer to take action
知识点（三）掌握6个重点词汇的用法
cruel adj.. ______
比较级_________ ；最高级_________
be cruel to sb 意为_____________ His words sounded cool and cruel.
译：___________________________________
残酷的
crueler
他的话听起来很冷酷。
cruelest
对…很残酷
2.harmful adj.__________
be harmful to sb / sth 意为______________
相当于_____________________ 1）空气污染对我们的健康有害。 译___________________________________
/ ___________________________ 2）吸烟有害健康
__________________________________
/__________________________________
有害的
对…有害
do harm to sb / sth
Air pollution is harmful to our health.
Air pollution does harm to our health.
Smoking is harmful to health.
Smoking does harm to health.
3.scientific
adj.___________
n.___________/ _____________ 到目前为止，没有科学研究表明鲨鱼鳍对健康是有益。
译：___________________________________
____________________________________
科学的
science
So far, no scientific studies have shown that shark fins are good for health.
scientist
4.take part in 意为 ____________ 多指参加一些集会性活动，如会议，劳动等。
你想参加我们的聚会吗 ？ 译:_____________________________________
参加
Do you want to take part in our party？
5. afford v._____________ 后跟名词，代词，不定式做宾语。
常与can ,could , be able to 等 连用。
afford to do sth 意为 ________________
他买不起一台新电脑。
译 ________________________________
承担、负担
负担得起做某事
He couldn’t afford(to buy) a new computer.
6. recycle v.______________
过去式 ____________
1）我们回收我们所有的塑料袋。
译______________________________
2）这些循环使用的书籍可以省钱。
译________________________________
可回收利用
recycled
We recycle all the plastic bags.
The recycled books can save money.
知识点（四）
熟读并理解短文3a.并完成表格
1.The cook _______________________(切断整条鱼）
2. 喝酒太多对健康有害_______________________________
3. A giraffe can reach ____________________
(树顶上的叶子)
4.很多人认为鲨鱼不可能濒危。
cut off the whole fish.
Drinking too much is harmful to health.
the leaves at the top of the tree
Many people believe that sharks can never be endangered.
四、训练提升
6.这不仅残忍，而且对环境有害
7.在过去的20至30年里，有些种类的鲨鱼下降了百分之九十多。
This is not only cruel, but also harmful to the environment.
The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
8.尽管没有科学研究支持这一点，但许多人认为鲨鱼鳍多健康有益。
9.鲨鱼处于食物链的顶端，所以如果他们的数量下降, 海洋生态系统将处于危险中.
Although there are no scientific studies to support this, a lot of people believe that sharks fins are good for health.
Sharks are at the top of the food chain, so if their numbers drop ,the ocean’s ecosystem will be in danger.
10.如果我们不做点事阻止鲨鱼鳍的销售，鲨鱼有一天会消失。
11.没有鱼鳍，鲨鱼不能再游泳，并慢慢死去。
Sharks may disappear one day if we do not do something to stop the sale of shark fins.
Without a fin, a shark can no longer swim and slowly dies.
12.我们正在竭力拯救地球。
13.这条河流过去那么干净。
14.没有科学研究表明鲨鱼鳍对健康有益。
We’re trying to save the earth.
The river used to be so clean.
No scientific studies have shown that sharks fins are good for health.
15.你曾经参加过环境工程吗？
16.多少人参加？
17.我们迫不及待地想采取行动了。
Have you ever taken part in an environmental project
How many people took part
We can’t afford to wait any longer to take action.
18.许多人忘记拯救地球从小事开始。
19.在一些商店里，你不得不为塑料袋付款，我认为那是一个好主意
Many people forget that saving the earth begins with small things.
I think it’s a great idea that you now have to pay for plastic bags in some stores.