仁爱科普版八年级上册Unit 4 Our WorldTopic 1 SectionC课件(共22张PPT)

(共22张PPT)
Unit 4 Our World
Topic 1 Which do you like better, plants or animals
Section C
1.words: rainforest, thick, forest, ground, wed, cover, earth, surface, thousands of, nowhere, control, climate, die, wood, protect
2. 句型：
1）Thousands and thousands of animals live in rainforests.
2) Rainforests are very important to us.
3) They play an important part in controlling the climate.
情感技能：
通过对热带雨林的学习，加深学生对森林的认识，教育学生从小事做起，从自己做起，保护环境。
Learning Objectives
请根据图片及所提供的情景进行单词预测
The forests are very _______ in the picture.
thick
[θi k ] adj. 浓密的，茂密的
r a i n f o r e s t
1
Pre-reading
It is dark in the rainforests and the ground is very _________ . ( 潮湿 )
wet
Rainforests are in the h___parts of the world. They only ________ ['k v ] 6% of the earth's ________.
ot
cover
表面
surface
These plants and animals only live in rainforests,we
can find them _________ else on Earth. ['n uwe ]
nowhere
Tall trees can provide us with lots of _______ and
we can use them to build the houses.
[ wud ] 木材
wood
Cutting down too many trees makes the areas of rainforests smaller . So we should _______ them.
protect
Task 1: Watch the flash of 1a, and find out the answers.
What can rainforests give us
2
While-reading
wood n. 木头，木材；woods 树木，森林
Rainforests give us …
rubber n.橡胶
food
medicine
fruits
What’s the main idea of paragraph 1
A. Thousands of plants and animals live
in rainforests.
B. The features ( 特征 ) of rainforests.
C. Rainforests are thick forests in the hot parts
of the world.
Task 2: Read paragraph 1 and choose the best answer.
Skimming : （略读能帮助你快速理解文章的概要）
2. What’s the main idea of paragraph 2
A. Rainforests can give us many useful things.
B. We should protect rainforests.
C. Rainforests are very important to us.
Task 3: Read paragraph 2 and choose the best answer.
1.What are rainforests
Rainforests are thick forests in the hot parts of the world.
2.What does the word “cover” mean
It means “覆盖”.
Rainforests cover 6% of the earth’s surface.
Scanning : （跳读寻找文章中特定的信息）
Task 4: Read paragraph 1 and answer the questions.
Why are rainforests the lungs of the earth
Because the plants in the forests help to make the air fresher and cleaner.
2. Why should we protect rainforests well
Because they help to hold the water and keep the water cycling.They play an important part in controlling the climate.
Task 5: Read paragraph 2 and answer the questions.
Task 6: Read 1a and complete the table. Then check with your partner.
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 ________
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
hot
wet
dark
hot
6%
surface
plants
animals
fresher
cleaner
hold
cycling
climate
nature
wood
food
medicine
Careful reading
Rainforests cover 6% of the earth’s surface.
six percent
Key points
数词 % +
可数名词复数
可数名词单数/ 不可数名词
Eg: 50% of the students in our class ____(be) boys.
70% of the earth ____(be) water.
Task 7
are
is
cover A with B 用B盖住A
eg.他用报纸盖住了自己的脸。
He ________ his face _____ a newspaper.
be covered with sth被…覆盖
道路被雪覆盖了。
The road ____________________ snow.
is covered with
covered
with
is covered with
成千上万的
成百上千的
成百万上千万的，数以百万计的
hundreds of
millions of
Thousands and thousands of
animals live in rainforests.
3. Many of them live in the trees over 30 meters
from the ground.
eg: Our class has _________________ 50 students.
over/more than
over = more than 多于， 超过
play an important part ( in sth.)
在某事中起重要作用； 参与（某事）
4. They play an important part in controlling the
climate.
Eg: 他积极参加班级活动。
He _________________________ class activities.
plays an active part in
5. But now rainforests are becoming smaller and
smaller.
1.“形容词比较级 + and + 形容词比较级” 越来越……
Eg. 天气变得越来越暖和了。
The weather gets warmer and warmer.
中国变得越来越强大。
China becomes stronger and stronger.
越来越小
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
The last sentence in a paragraph may tell you what comes next.
What should we do to protect rainforests
We should save paper and mustn’t use the chopsticks for only once.
Group work
Discuss the pictures in groups about how to protect rainforests. Then write a short passage.
Post-reading
3
show and tell people about …
do anything we can，such as …
We mustn’t use chopsticks for only once.
We should use less paper and be sure not
to waste it.
ask people not to cut …
We shouldn’t cut down the trees.
Don’t hurt the trees or other animals and plants.
Let’s plant …
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.
1.Without water,the fish in the river would ___.
A.die of B.dies of C.dies out D.die out
2.A warm coat can protect you ___cold.
A.in B.with C.from D.at
3.Every drop of water is very important ___us.
A.for B.with C.to D.at
4.There are ___ of sutdents in the school.
A.thousands B.three thousands
C.thousand D.three thousand
5.Our city is ___ and______.
A.more beautiful; more beautiful
B.more;more beautiful
C.morebeautiful;beautiful
D.the more beautiful;the more beautiful
Exercises
1. Learn to describe the situation of
rainforests and the importance to the earth.
2. Talk about how to protect rainforests.
summary
Homework
读1a和课堂笔记。
作文: To protect forests (练习册P83)