Unit 2 Saving the earth.Topic 3 What can we do to protect the environment? Section A 课件(22张）

课件22张PPT。Unit 2 Saving the Earth Topic3 What can we do at home to protect the environment? Section A Let's enjoy the ad.

Today ,we will talk about how to protect the environment.
Do you know how these kinds of pollution affect our environment? What should we do to improve our environment? 1a Listen, look and say. Listen to 1a again and answer the questions.(1) Who is working for an organization that protects the environment?
Jane.
(2) What’s her main job?
Her main job is to help spread the message about protecting the environment.
(3) Should we use both sides of paper?
Yes, we should.
(4) Why is the recycling useful?
It can protect the environment, and it can save money, too. 1b Listen to 1a and complete the table. organization protect the environmentspread the message reduce the wastewaste paperKey words 1.work for an organization 为 …..组织工作
2.help spread the message 帮助宣传信息
3.the three R’s ---reduce, reuse and recycle
3R……..减少使用，再次使用和回收再利用。
4.reduce the waste 减少浪费
5.reuse plastic bags 重复使用塑料袋
6.Recycle回收利用
7.encourage sb. to do sth. 鼓励 sb做某事
8.sort 分类
Retell it 1c Read 1a and complete the sentences. The three R’s ---______, ______ and _______ --- are important.
At home, we can, for example, use both ______ of paper and reuse _____ bags.
At school, students are encouraged to _____ waste paper and ______________ because recycling can protect the ____________ and _______ money.
Then we _______ them ______ they can be recycled. reducereuserecyclesidesplasticcollectsoft drink cansenvironmentsavesortso that(1) We should use plastic bags as few as possible.
(2) We should throw the garbage in the river.
(3) We should reduce the waste we produce.
(4) We should use both sides of paper.
(5) We should throw the plastic bags rather than reuse them.You can nod or shake the head! Nodding the head means agreement. Shaking the head means disagreement. v.点头n. 同意并 列 句 compound sentence (课本P126)连词 or, and, but 和 while的用法
①表示并列关系，用and…
②表转折，用but, while…
③表选择，用or…(1) You nod your head and it means agreement.
(2) Hurry up, or you’ll miss the train.
(3) Water is important but some people don’t save it.
(4) Some people protect animals while others kill animals.Discuss the words underlined 2 Combine the sentences with or, and, but or while, making some changes if necessary. 1. Noise is a kind of pollution. It’s harmful to our hearing.
Noise is a kind of pollution and it’s harmful to our hearing.
2. Work hard. You will fail the exam.
Work hard, or you will fail the exam.
3. Nodding the head means agreement. Shaking the head means disagreement.
Nodding the head means agreement while/but shaking the head means disagreement.
4. Hurry up. You will miss the bus.
Hurry up, or you will miss the bus.
5. He has failed several times . He never gives up.
He has failed several times, but he never gives up.
放弃3a Read the table and write the correct letter under each picture. Can you sort （分类） the garbage based on your own knowledge?paper cupsglass bottlescansplastic bagsnewspapers3a Read the table and write the correct letter under each picture. Then sort the garbage based on your own knowledge. √√√√√3b Listen to the conversation and check your answers in 3a. We learn: 1.Some words: nod, agreement
2.Some phrases：give up
3. Some sentences:
(1) We should reduce the waste we
produce.
(2)Recycling can protect the
environment, and it can save money, too.
We can:1.Use the compound sentences with or, and, but
and while.
2.Talk about environmental protection.
SummaryRead 1a.
Memorize the useful expressions and key sentences which we learn today.
Finish Section A in your workbook.
Preview Section B.
HomeworkThank you !