Unit 8 A green world Welcome to the unit课件21张

(共21张PPT)
Unit 8 A green world
Comic Strip & Welcome to the unit
What did the world use to be
It used to be a green world.
What is the world like now
There is much air pollution and waste.
April 22nd is Earth Day.
How do we protect our earth and make a green world
Some ways to live a green life
We can reduce air pollution by riding bicycle.
v. 减少，降低
Some ways to live a green life
We can save energy by turning off the lights when we leave.
turn off 关上（开关）
Some ways to live a green life
We can protect the environment by recycling things.
recycle v. 回收利用，循环利用
It is wise for people to take public transport.
adj. 明智的，充满智慧的
Some ways to live a green life
Match the pictures with the correct sentences.
a. We can reduce air pollution by riding bicycles.
b. We can save water by taking shorter showers.
c. We can save energy by turning off the lights when we leave a room.
d. We can protect the environment by recycling waste.
by
by
We can
save energy
reduce air pollution
by
by
A: How can we live a green life
B: We can ______ by _________.
Look and say
Listen and say
Listen to the conversation and answer the following questions.
1. How did Kitty go to school in the past
Her father used to drive her to school.
2. How does Kitty go to school now
She takes the underground now.
3. What does Millie think people should do to live a green life
She thinks it’s wise for people to choose public transport and ride bicycles.
4. What does Sandy think people should do
She thinks we should remember to turn off the lights when we leave a room.
Discussion
Our earth is in trouble! We should try our best to protect the environment. What else can we do
We can ______ the water to flush the toilet.
We can turn off the tap __________.
Don’t leave the tap on when _______________.
reuse
We can _______________ when washing hands with soap.
turn off the tap
brushing teeth
tightly
Listen and say
Eddie and Hobo are talking about green lives too. Listen to the conversation and answer the following questions.
1. What is Hobo going to do
He is going to plant trees.
2. Will more trees be planted this year Why
Yes. Trees are good for us.
3. What does Eddie like doing
He likes digging in the garden.
4. What will Eddie plant
He will plant breadfruit trees.
Fill in the blanks
Fill in the blanks according to the dialogue.
Spring is coming. Eddie asks Hobo what he is going to do. Hobo says he is going to plant ________. Eddie asks if more trees will be ________ this year. Hobo says yes because trees are ________ for everybody. Eddie wants to go with Hobo. He says he likes _________ in the garden. Oh, is he ________ Everyone knows Eddie used to be ________. Has Eddie changed Of course not. What he really wants is _________ breadfruit trees so that he can eat lots of breadfruit. Eddie really enjoys _________!
trees
planted
good
digging
serious
lazy
planting
eating
Language points
1. We can save energy by turning off the lights when we leave a room.
turn on / off the lights 开灯/关灯
拓展：含turn的短语
turn down 拒绝；调低
turn ... into 把……变成
turn up 调高；出现
turn on/off 打开/关掉
turn in 上交
turn to 翻到……；向……求助
turn out 结果是；生产
turn over 翻页；移交
2. More and more families own cars and this causes serious air pollution.
cause是动词，意为“导致；造成”，后多接抽象名词、代词作宾语，也可接双宾语。
cause sb. sth. = cause sth. for sb. 给某人造成某事
e.g. I’m afraid I will cause you much trouble.
cause用作名词，意为“原因，起因”，固定短语the cause of 意为“……的原因”。
e.g. What was the cause of the fire
Useful phrases and expressions
1. like digging in the garden 喜欢在花园里挖洞
2. be serious about (doing) sth. 对做某事认真
3. save water/power 节约水/能源
4. taking shorter showers 缩短洗澡时间
5. protect the environment by recycling waste
通过回收利用废品来保护环境
6. cause serious air pollution 引起严重的环境污染
Exercises
1. Everyone thinks Kong Ming was much _______ (充满智慧的) than Zhou Yu.
2. To _________ (减少) air pollution, we’d better ride more often instead of driving.
3. You can’t be _______ (认真的)! You’re actually going to lend him money again
4. I _______ (挖) a hole in the garden with a tool several days ago.
5. The teacher says we can _______ (回收利用) waste to protect our environment.
6. The heavy rain will _________ (引起) many big problems.
wiser
reduce
serious
dug
recycle
cause
1. ______ energy you can turn off the tap when you brush your teeth.
A. Save B. To save C. Saving D. Saved
2. The computers ________ in the classrooms next month.
A. is going to use B. are going to use
C. are used D. will be used
3. --- I’ve decided to give up my job, Mum.
---____________. You’d better think twice.
A. Sounds great! B. What a pity!
C. Guess what D. Are you serious
4. The heavy rain ______ so many traffic accidents on the highway last night.
A. made B. allowed C. caused D. let
Thank you!