Unit 4 Topic 1 What's the strongest animal on the farm? Section C 课件(共31张PPT) 2024-2025学年英语仁爱版八年级上册

(共31张PPT)
Unit 4
Our World
Topic 1 Section C
学习目标
重点探究
自主学习
学习导航
当堂检测
课堂总结
拓展提升
新课导入
What should we do to protect rainforests
学习目标
能熟悉并正确运用本课时的重点单词和短语
能用英语描述热带雨林的特征和重要性
能用英语谈论如何保护热带雨林
自主学习
New words and expressions
thick adj. 茂密的；厚的；浓的
forest n. 森林
ground n. 地，地面
wet adj. 湿的，潮湿的
cover v. 覆盖，遮盖；掩盖 n. 盖子；罩
earth n. 地球；土，泥；大地
surface n. 表面
thousands of 成千上万，几千
nowhere adv. 无处，哪里都不
control v.&n. 控制
climate n. 气候
die v. 死，死亡
die out 灭绝；消失
wood n. 木头，木材；(pl.) 树木，森林
reason n. 原因，理由，解释 v. 推理，推断
protect v. 保护
Rainforests give us …
food
fruits
Rainforests give us …
medicine
Rainforests give us …
重点探究
1a Read and understand.
Look at the pictures and check which questions the passage can answer.Then check your guess.
What are rainforests
How many animals are living in rainforests
Where do animals live in rainforests
What can we get from rainforests
Why are rainforests important to us
rainforests in the world
Rainforests cover( = spread over ) 6% of the earth’s surface.
Thousands and thousands of animals live in rainforests. Many of them live in the trees over 30 meters from the ground.
Rainforests
Rainforests are thick forests in the hot parts of the world. It rains a lot and the ground is always wet. It’s always dark and hot in rainforests. Rainforests cover 6% of the earth’s surface. They provide places to live for thousands of plants and animals found nowhere else on Earth. There are lots of tall trees and other different kinds of plants. Thousands and thousands of animals live in rainforests. Many of them live in the trees over 30 meters from the ground.
Rainforests are very important to us. They are the lungs of the earth. The plants in the forests help to make the air fresher and cleaner. They also help to hold the water when it rains and keep the water cycling. They play an important part in controlling the climate. Rainforests also help to keep the beauty of nature. Without rainforests, many beautiful plants and animals would die out. Rainforests give us wood, food, fruit, medicine, and many more useful things. We need rainforests for many reasons. But now, rainforests are becoming smaller and smaller, so we should protect them.
Feature of rainforests in the ______ parts of the world
_______ ground and always ____ and ____ in them
cover ____ of the earth’s _______
give a home to many beautiful ______ and ________
hot
wet
dark
hot
6%
surface
plants
animals
1b Listen to 1a and complete the table. Then
check with your partner.
Importance of rainforests make the air _______ and ________
_____ the water and keep the water________
control the ________
keep the beauty of ________
give us ______, ______, fruit, ________ and so on
fresher
cleaner
hold
cycling
climate
nature
wood
food
medicine
1. What does the word “cover” mean in Paragraph 1
2. Why are rainforests the lungs of the earth
It means “覆盖”.
Because the plants in the forests help to make the air fresher and cleaner.
1c Read again and answer the questions.
3. Why should we protect rainforests well
4. Can you guess what the next part of the passage will talk about
5. What should we do to protect rainforests
Because they help to hold the water and keep the water cycling. They play an important part in controlling the climate.
We should save paper and mustn’t use the chopsticks for only once.
Yes. The next part may talk about what we should do to protect rainforests.
2 Discuss the pictures in groups about how to
protect rainforests. Then write a short passage.
show and tell people about …
do anything we can，such as …
ask people not to …
You can write like this :
Example :
Rainforests are very important to us. It is necessary for us to protect them very well.
First, we should make people know about the importance of protecting them. Then ask people not to cut down the trees without plans. For us, we should do something as possible as we can. When we have meals, we mustn’t use chopsticks for only once. In the life, use less paper and be sure not to waste it.
Language points
拓展提升
1. Rainforests cover 6% of the earth’s surface.
热带雨林占地球面积的6%。 (1) A. cover v. 覆盖； B. cover… with…用……覆盖……； He covered his face with a newspaper.
他用报纸盖住脸。 C. be covered with… 被……覆盖； The land is covered with snow. 大地被雪覆盖了。
(2) 6% 读作 six percent.
(3) 世界上独一无二的事物面前要用the the earth 地球，the sun 太阳； the moon 月亮； the Mars火星；
数词 % +
可数名词复数
可数名词单数 / 不可数名词
2. Thousands and thousands of animals live in rainforests.
千千万万的动物住在热带雨林。
hundreds of 成百上千的
thousands of 成千上万的……；
millions of 数以百万计的 表示不确定数目时，hundred, thousand等词后不但要
加s， 而且还要用of构成固定词组；表示确定数目时，
要在hundred, thousand前加一个具体数字，但
hundred, thousand后不能加s,也不需要用of.
3. They play an important part in controlling the climate.
他们在控制气候方面起着很重要的作用。 (1) play an important part in........ 在……中起重要作用； You have done so much for our study and life. You played
an important part in our progress .
你们为了我们的学习生活付出了许多的心血，我们的
点滴进步都离不开你们的支持。 (2) control the climate 控制气候；
4. Without rainforests, many beautiful plants and animals would die out.
没有热带雨林，很多漂亮的植物和动物将会灭绝。 (1) without 没有，是介词，后不能接句子，只接名词，动名词或代词。 I won’t be happy without her. 没有她，我将不会快乐。 (2) die out （指物种、家族、习惯、观念等） 绝迹，消失； 绝种；绝灭； How did the dinosaurs die out 恐龙是如何灭绝的？
5.Rainforests give us wood, food, fruit, medicine, and many more useful things.
热带雨林给我们木柴、食物、水果、药物和很多更有用的东西。A. wood 意为“木，木头，木柴，木料”，不可数名词。He chopped some wood for fire. 他劈了些柴烧火。B. wood 意为“树林，林地”，可数名词。其面积比forest面积小。I like walking in the woods. 我喜欢在树林中散步。
6.But now, rainforests are becoming smaller and smaller…
1. smaller and smaller 越来越小
比较级+and+比较级 越来越…
如：The weather is colder and colder
2. 注意：多音节形容词在表示“越来越…”时，常用
结构是：more and more +形容词原形
如：越来越漂亮 more and more beautiful
当堂检测
一、根据中文提示，完成下列句子。
1.________ ____(成千上万的)people come to China
to visit the Great Wall.
2.Do you know how many plants there are on the ______
_______(地球表面)
3.If we don't protect animals, they will _____ _____
(灭绝)some day.
4.I think math is ______ _____(更有用)than other subjects.
5.You should learn to ______ __________(控制自己).
Thousands of
earth's
surface
die out
more useful
control yourselves
课堂总结
Unit 4 Topic 1
Section C
热带雨林的重要性：
Rainforests are important to us. They make the air_________________. They help to _______ water and keep the water_________. They play an important part in controlling the__________. They give us wood, food, fruit, medicine, and many more useful things.
重点单词和短语:
control, reason, surface, earth, cover, wet, ground, thick, forest, die out, thousands of
fresher and cleaner
hold
cycling
climate