仁爱科普版九年级上册Unit 2 Topic 1 What can we do at home to protect the environment Section D课件(共20张PPT)

(共20张PPT)
Unit 2 Saving the Earth
Topic 1 What can we do at home to protect the environment
Section D
Learn some new words and phrases.
Get to know: remove, replace, insect, bite, planter
Be able to use: dry, provide sth. to do sth. ; face difficulties; even though
Be able to use some useful expressions.
(1) Without them, it cannot breathe.
(2) They plant different types of trees so that birds and animals can live in the forests.
Use the compound sentence correctly.
Realize the importance of the forest.
What have we learnt in this topic
Compound Sentence
Recycling can protect the environment, _______ it can save money, too.
Some things we have done are good for the earth _________ some are bad.
We should do everything to protect it, ________ we’ll be punished and lose our home.
People produce power from coal, _______ it is very dirty and causes acid rain.
Read through Sections A-C and fill in the blanks with the correct words.
and
while
or
but
一、并列句的概念：
并列句是由并列连词and, but, or, for, so等把两个或两个以上互不依从、但意思紧密联系的简单句连在一起而构成的句子。
二、并列句结构：
简单句+并列连词+简单句。
Compound Sentence (并列句)
Compound Sentence (并列句)
作 用 主 要 连 词
并 列 连 词 表并列关系
表选择关系
表转折关系
表因果关系
and(和，而且) , both…and, not only…but also(不但...而且) , as well as(也,和...一样)，
neither…nor(既不...也不...) 等
or(或者;否则), either…or(要么...要么)等
but(但是) , however(然而，可是) , while (而,着重表对照关系) , not...but(不是...而是) 等
for(由于), so(因此)等
Functions
Would you like to be a __________ person
First, you ought to _________ the electricity when you leave a room.
__________ said than done.
Actions speak _________ than words.
The train can _________ a top speed of 431 km per hour.
greener
shut off
Easier
louder
reach
How well do you know Sections A-C Now do the following tasks and check.
Forests are the lungs of the earth. Without them, it cannot breathe. It needs its forests to remove carbon dioxide from the air and to make oxygen. In many countries, such as New Zealand, Canada and Brazil, forests were cut down to provide wood to build houses. Many young volunteers around the world are working in their holidays to plant new trees to replace them.
These young men and women face many difficulties when they plant new trees. The weather may be very hot and dry or it may be very cold and wet. There are often many insects that bite these planters on their legs, arms and faces while they work. They carry heavy bags of small trees, and working in the mountains can be dangerous.
Read the passage and answer the questions on Page 50.
Tree planters are changing the world. They plant different types of trees so that birds and animals can live in the forests. Even though tree planting is very difficult, they love their work. They believe that in 50 years their little trees will become beautiful forests.
1. New words
The earth needs its forests to remove carbon dioxide from the air and to make oxygen.
Many young volunteers around the world are working in their holidays to plant new trees to replace them.
The weather may be very hot and dry or it may be very cold and wet.
If you remove something from a place, you take it away.
If you remove clothing, you take it off.
If you replace something that is broken, damaged, or lost, you get a new one to use instead.
If something is dry, there is no water or moisture on it or in it.
1. New words
There are often many insects that bite these planters on their legs, arms, and faces while they work.
An insect is a small animal that has six legs. Most insects have wings. Ants, flies, butterflies, and beetles are all insects.
If you bite something, you use your teeth to cut into it, for example, in order to eat it or break it. If an animal or person bites you, they use their teeth to hurt or injure(伤害) you.
2. even though
even though/even if
意为：
能与but 连用吗？
即使，尽管，虽然
不能（在英语中，虽然不与但是连用；
因为不与所以连用）
I’ll get there, even if I have to walk.
即使我得步行，我还是要到那儿。
1. How do you understand “Forests are the lungs of the earth”
2. What difficulties do tree planters face when they plant trees
3. Why do they plant different kinds of trees
Forests can remove carbon dioxide from the air and make oxygen.
(1)The weather may be very hot and dry or it may be very cold and wet.
(2)There are often many insects that bite these planters on their legs, arms, and faces while they work.
(3)They carry heavy bags of small trees, and working in the mountains can be dangerous.
They plant different types of trees so that birds and animals can live in the forests.
4. What will happen if we do not plant new forests
5. Would you like to be a tree planter when you are older Why or why not
The forests will become less and less.
We cannot breathe without them.
Yes. I would like to see more beautiful forests and breathe more fresh air.
1. Answer the following questions to see how green you are.
Finding the Greenest Person
Project
2. Give your points for your answers. What is your total Compare your result with your group members’ and tell the class who is the greenest in your group and give reasons.
We learn:
1. Use the compound sentence correctly.
2. Realize the importance of the forest.
We can:
1. Some words:
dry, remove, replace, insect, bite, planter
2. Some phrases:
provide sth. to do sth., face difficulties, even though
3. Some sentences:
(1) Without them, it cannot breathe.
(2) They plant different types of trees so that birds and animals can live in the forests.
单项选择
( ) 1. Help others whenever you can _____ you’ll make the world
a nicer place to live in.
A. or B. and C. but
( ) 2. Cross the road carefully, ________ you’ll keep yourself safe .
A. so B. or C. and
( ) 3. Hurry up, ________ you’ll be late for the concert .
A. or B. so C. but
B
C
A
单项选择
( ) 4. I always enjoy visiting London, ______ I wouldn’t like to live there.
A. because B. so C. but
( ) 5. There are many sports lovers in his office. Some love climbing, ____
others enjoy swimming.
A. Or B. for C. while
C
C
1. Memorize the useful expressions and key sentences which we learn today.
2. Write a short passage to encourage more people to plant more trees.
3. Make a MIND MAP of different kinds of pollution.
Example
Pollution
Water Pollution
Soil Pollution
Air Pollution
Noise Pollution
Reason: Factories…
Litter
Light Pollution
Effect: …
How to Solve: …