Unit 2 Saving the earth. Topic 3 What can we do to protect the environment? Section A 课件26张

课件26张PPT。Unit 2
Topic 3 Section AWhat causes the haze? What should we do? How to be green?We should reuse plastic bags instead of
throwing them away. We should reduce using plastic bags. We should collect them for recycling. We call them the three Rs.Listen to 1a again and answer the questions.Who is working for an organization that
protects the environment?

(2) What’s her main job?

(3) What are the three Rs?

(4) Why is the recycling useful?
Jane.Her main job is to help spread the message
about protecting the environment.Reduce, reuse and recycle.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 paper1c 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指点迷津work for…
为……工作, 为……坚持不懈地努力
我们应该为和平而努力。We should work for peace.
她在一家电脑公司工作。 She works for a computer company.
2.encourage sb to do sth 鼓励某人做某事
爸爸经常鼓励我努力学习。
My father often encourages me to study hard.3. sort 作动词时意为 “整理、归类、分拣”; 作名词时相当于kind, 意为 “种类”。
sort out 分类,整理
all sorts of 种种, 各种各样的,
a sort of 一种 We must sort out the good apples from the bad ones. 我们必须把好的苹果与坏的分开。
3a Read the table and write the correct letter under each picture. Then sort 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. 并 列 句连词 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…连词“or” ,“and” “but” “while” 连接的并列句(1) 表示并列关系，用 “and”
My father is a doctor and my mother is a worker.
(2) 表转折，用 “but”
I bought him a shirt but he didn't like it.Grammar(3) 表对比, 用 “while”, 意为“然而”
Susan does housework every day while her husband does nothing.
(4) 表选择, 用 “or”, 意为“或者, 否则”。
Now you can have a rest or you can go to the cinema．
Get up or you’ll be late for school. 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.
More practice1. You help him. He helps you.
2. The teacher’s name is Smith. The
student’s name is John. 用and, or, while, but 把下列句子合并成一句话。You help him and he helps you. The teacher’s name is Smith, and the student’s name is John.3. Hurry up. you’ll miss the train.
4. He was a little man with thick glasses.
He had a strange way of making his
classes lively and interesting. Hurry up, or you’ll miss the train.He was a little man with thick glasses,
but he had a strange way of making his
classes lively and interesting. Exercises1 . He is tall ,___his daughter is short.
A. when B. while C. or D. And
2 . Tom likes apples very much, ___he doesn’t like bananas.
A. and B. or C. but D. so3. Miss Sun’s main job is ___English well.
She is our new English teacher.
A. help us with B. help us learn
C. help us to learn D. to help us learn
4. I was cooking ___he was watching TV.
A. after B. but C. because D. while5. Work hard, ___you may catch up with your classmates soon.
A .or B .but C. and D. yet
6. It’s very kind __you __so.
A. of; say B. of; to say
C. for; say D.for; to say
7. Call a taxi,___you will miss the train.
A. and B. though C. because D. or8. Not only his parents but also his brother ___to the summer palace. They haven’t been back.
A. have been B. have gone
C. has been D. has gone
9. Take more exercise, ___you’ll be healthier.
A. and B .or C. but D. so1 During the earthquake, many buildings fell down . ____
the people there didn’t give up hope.
A And B So C Or D But
2 -I won’t go to Ann’s birthday party this coming Saturday.
-_____ you told me you would. What’s happening?
A And B So C Or D But
3 Use your head, _____ you’ll have an idea.
A or B and C but D while
4 Study hard, _____ you’ll fail in the exam.
A or B and C then D so
5 Don’t make so much noise, ______ Aunt Li will be
angry with you.
A if B or C and D but
6 He is tall, _____ his son is short.
A. when B. or C. while D. and中考真题回放D D B A B C7. Hurry up, _______ you will miss the train.
A. and B. so C. however D. or
8.He is poor , ___ happy.
A.so B.neither C.but D.or
9 He is rich, _____ he is happy, too.
A. and B. so C. or D. but
DCAWow! We’ve got so much garbage! Soft drink cans, lunch boxes, plastic bottles, batteries, waste paper, paper bags and cups,…4 Suppose you will have a Clean-up Day. Work in groups and find out the garbage. Then sort them based on 3a and talk about them. A: I think lunch boxes should be reused.
B: What about waste paper ?
A: I think… 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.
SummaryByebye