Unit 3 Lesson 17 Save the tigers 课件(共16张PPT) 2023-2024学年冀教版英语八年级下册

(共16张PPT)
Unit 3 Animals are our friends
Lesson 17 Save the tigers
Language Goal
新知学习
课堂小结
当堂检测
学习目标
重点研讨
1.能熟悉并能正确运用本课时的重点单词和短语
2.能了解老虎的现状并保护老虎
“Save the tigers”is a group of volunteers. These volunteers hope to save the tigers of the world. At the beginning of the 20th century, the number of tigers in the wild was around 100 000. But today that number has dropped to a few thousand.
Tigers live in the forests of Asia. They usually have orange fur and dark stripes. Tigers are symbols of strength and courage. In many stories, they are brave. The tiger is at the top of the food chain.
THINK ABOUT IT
Where can you usually see a tiger
Do you think tigers need our help Why or why not
新知学习
课堂小结
当堂检测
学习目标
重点研讨
新知学习
课堂小结
当堂检测
学习目标
重点研讨
It helps keep the number of other wild animals in balance. For this reason, tigers are important to the environment.
In recent years, tigers have been in danger of disappearing. Some people hunt and kill tigers for money. People have cut down a lot of trees as well. As forests disappear, tigers lose their homes. The number of tigers in the wild is quickly decreasing and we must do something about it.
Learning Tip
There are currently six types of tigers: the Bengal tiger, the Siberian tiger, the Sumatran tiger, the Malayan tiger, the Indochinese tiger and the South China tiger.
新知学习
课堂小结
当堂检测
学习目标
重点研讨
B
C
A
1. Read the lesson and match each paragraph with its main idea.
新知学习
课堂小结
当堂检测
学习目标
重点研讨
2. Read the lesson and find some sentences to support the main idea of each paragraph.
Save the tigers”is a group of volunteers.
These volunteers hope to save the tigers of the world.
The tiger is at the top of the food chain.
It helps keep the number of other wild
animals in balance.
In recent years, tigers have been in danger
of disappearing. Tigers lose their homes.
The number of tigers in the wild is quickly decreasing
新知学习
课堂小结
当堂检测
学习目标
重点研讨
3. Work in groups and discuss some ways to protect animals.
Write down your ideas.
How to protect animals？
First, I think we must stop killing the rare birds and animals, especially the young ones.
Second, we have to protect the environment, to make the sky
blue, to make the grass green, to give the animals a comfortable
space to live. It's not only for the animals but also ourselves.
At last, we should tell more and more people why and how to protect the animals, make everyone do this.
新知学习
旧知回顾
课堂小结
当堂检测
学习目标
拓展提升
重点研讨
课堂小结
当堂检测
学习目标
新知学习
1. At the beginning of the 20th century, the number of
tigers in the wild was around 100 000.
跟复数名词连用作主语时，中心词是number，
谓语动词要用单数。
The number of students in our class 50.
The number of pages in this book 60.
中心词是number，谓语动词要用单数。
is
is
新知学习
旧知回顾
课堂小结
当堂检测
学习目标
拓展提升
重点研讨
课堂小结
当堂检测
学习目标
新知学习
a number of “许多”
a number of + 可数名词复数作主语时，谓语动词用复数。number前可用large，small等修饰，表示程度。
例如：
A large number of students are planting trees on the hill.
2. But today that number has dropped to a few thousand.
The price of the car dropped to $200,000.
当hundred, thousand前面是基数词one, two, three…
a few, many时，其后不加s。
新知学习
旧知回顾
课堂小结
当堂检测
学习目标
拓展提升
重点研讨
课堂小结
当堂检测
学习目标
新知学习
3. Tigers are symbols of strength and courage.
Eg: The dove is the symbol of peace.
4.For this reason, tigers are important to the environment.
be important for sb./sth to do sth.
对于……来说做……是重要的。
Eg: Time is important to me.
It is important for you to get there early.
新知学习
旧知回顾
课堂小结
当堂检测
学习目标
拓展提升
重点研讨
课堂小结
当堂检测
学习目标
新知学习
5. In recent years, tigers have been in danger of disappearing.
in danger (of)“处于……危险之中”
You’re in danger of catching a cold.
The passengers are in danger! Let’s go and help!
out of danger “脱离危险”
新知学习
旧知回顾
课堂小结
当堂检测
学习目标
拓展提升
重点研讨
课堂小结
当堂检测
学习目标
新知学习
6. People have cut down a lot of trees as well.
人们也已经砍倒了大量的树。
I 've been to Beijing, and I have been to Shanghai as well.
我去过北京，我也去过上海。
7. As forests disappear, tigers lose their homes.
随着森林的消失，老虎失去了它们的家园。
as在句中作连词，引导状语从句，意为“随着，当……的时候”
As the sun rose, the fog disappeared.
As she left the room, she remembered that book.
新知学习
旧知回顾
课堂小结
当堂检测
学习目标
拓展提升
重点研讨
课堂小结
当堂检测
学习目标
新知学习
8. reason/'ri zn /n . 原因；动机；理由
Eg：What is the reason for your long silences
有关短语：for reasons of为了，出于；
in reason合情合理的，正当的。
Eg：For reasons of safety, the door is always kept locked.
It is not in reason to ask him to do that .
在英语中reason常和for连用，意为“……的原因”，
但和because不在一个句子中出现。
Eg: The reason for the fire was that the weather was dry .
新知学习
旧知回顾
课堂小结
当堂检测
学习目标
拓展提升
课堂小结
重点研讨
当堂检测
学习目标
新知学习
重点短语：
in danger of
the number of ...
a number of / a lot of
keep in balance
out of balance
重点词汇：
balance, reason
disappear, kill
cut, decrease
Unit 3
Lesson 17
新知学习
旧知回顾
课堂小结
当堂检测
学习目标
拓展提升
当堂检测
重点研讨
课堂小结
学习目标
新知学习
1. _____________ students is about twenty. (……的数量)
2. It’s ____________ your health. (对……是重要的)
3. The river is polluted and ___________ going dry.(处于……危险中)
4. ____ time went by, she became more and more beautiful. (随着)
The number of
important to
in danger of
As
根据句意和括号内汉语意思填如正确单词或短语
新知学习
旧知回顾
课堂小结
当堂检测
学习目标
拓展提升
当堂检测
重点研讨
课堂小结
学习目标
新知学习
5. _________________ the party, he gave me a gift. (在……之初)
6. The temperature has __________ below zero. (下降到)
7. It is at the bottom of the _________. (食物链)
8. You know, computers bring troubles _______. (也)
At the beginning of
dropped to
food chain
as well