(共54张PPT)
Unit 13
Period 1(1a-1e)
Section B
Revision
1. hear of
2. cut off
3. be harmful to
4. no longer
5. at the top of
听说
割掉，砍掉
对……有害
不再
在……顶端
6. the food chain
7. develop laws
8. the number of
9. so far
10. bring danger to
11. be in danger
食物链
制定法律
……的数量
到目前为止
给……带来危险
处于危险之中
Let’s watch a video.
Free talk
1. What do you think of this video
2. What can you get from this video
1. Have you ever taken part in an environment project
2. Do you know any environmental protection organizations
Friends of the Earth International is an international network of environmental organizations in 74 countries.
Friends of the Earth was founded in 1969.
Some environmental protection organizations
World Environment Day
(WED) is celebrated every year on June 5 to raise global awareness to take positive environmental action to protect nature and the planet Earth. It is run by the United Nations Environment Programme
(UNEP).
Earth Day is an annual event, celebrated on April 22, on which day events worldwide are held to demonstrate support for environmental protection. It was first celebrated in 1970, and now is globally
celebrated in more than 192 countries each year.
In 1993, Liang Congjie founded Friends of Nature (FON), China’s first enviromental non-governmental organization (NGO).
What could we do to save the planet
Turn off the lights when you leave the room.
Turn off the shower while you are washing your hair.
Take public vehicles.
Stop using disposable chopsticks.
1a What can we do to help save the earth Rank these items from the easiest (1) to the most difficult (5).
________ stop riding in cars
________ recycle books and paper
________ turn off the lights when you leave a room
________ turn off the shower while you are washing your hair
________ don’t use paper napkins
Pair work
1b Compare your number orders with your partner and then make conversations.
For example:
A: Recycling paper is really easy.
B: I agree. But it’s hard to stop
riding in cars.
A: I think that it is
easy to turn off the
lights when you
leave a room.
B: Yes, I think so. I can
do it well.
A: It’s easy to turn off
the shower when
you do not use.
B: …
1. Can you think about other things about saving the earth
2. List them in English and share them with your partner.
Free Talk
1c Listen and check (√) the things that
Julia and Jack talk about.
Things Julia and Jack talk about
______ turning off the lights
______ turning off the shower
______ not using paper napkins
______ taking your own bags when shopping
______ not riding in cars
______ riding a bike
______ recycling paper
T
Listen again and check true or false.
F
F
1. Jack and Julia both turn off the light in a hurry.
2. Julia often turns off the shower when washing hair.
3. Julia takes her own bag when shopping for a long time.
4. Jack likes riding his bike to school.
T
1d Listen again and choose the things about Julia.
Things Julia and Jack talk about Doing now Do in the future Never do
turning off the lights
turning off the shower
not using paper napkins
taking your own bags when shopping
not riding in cars
riding a bike
recycling paper
Pair work
According to the information of 1c and 1d, role-play Jack and Julia with your partner.
Jack: Will you turn off the light when you leave a room
Julia: Yes, I always do that. But I would never turn off the shower when I’m washing my hair.
Jack: …
Make conversations using the information from the chart in 1c. Say what is true for you.
Free Talk
Example:
A: We really shouldn’t use paper napkins, you know.
B: I know. I stopped using them last year.
A: I think we can recycle paper from now on.
B: I agree. It’s easy for us to do so.
A: I think it’s a good habit to take our own bags when shopping.
B: I agree. Plastic bags are unfriendly to the environment.
Look at these pictures and talk with your partner. What are your answers to the questions
recycle v. 回收利用，再利用
We will recycle 98% of this kind of waste.
我们将对98%的这种垃圾进行再利用。
Developing countries all over the world are recycling materials.
全世界的发展中国家都在回收利用材料。
1. Recycling paper is very easy.
Today people are encouraged to _______ paper, plastic and water for a better environment.
A. use B. waste
C. recycle D. make
C
reuse vt. 再用，重新使用
Please reuse your envelopes.
请重复利用信封。
Try to reuse paper as often as possible.
尽可能经常重复使用纸张。
re-是最常用的前缀之一，表示“再、重新、重复”的意思。
I have to get up and turn off the radio.
我必须起床关上收音机。
Make sure to turn off the light before
you leave.
临走前一定要熄灯。
turn off 关掉
2. Turn off the lights, Julia.
turn on意为（把水源、煤气、电源等）打开，反义词turn off 关掉。
turn down意为（把收音机的音量、灯）关小、调低，反义词turn up 调高。
词语辨析
(2017天津) John ________ the TV and helped his mother with the housework.
A. turned off B. heard from
C. joined in D. looked after
A
中考链接
(2016江苏徐州)
We should save energy by _______ the lights when we leave a room.
A. getting off B. showing off
C. taking off D. turning off
(2016重庆)
— It’s getting dark. Could you please ____ the light for me
— All right. Just a minute.
A. keep on B. turn on
C. try on D. put on
D
B
The music from the radio sounds so beautiful. Could you please ______ the radio a little, Mum
A. turn on B. turn off
C. turn up D. turn down
— Would you please _______ the TV a little Jack is doing his homework.
— Terribly sorry. I will.
A. turn up B. turn down
C. turn on D. turn off
C
B
3. I was just in a hurry.
in a hurry 赶时间；立刻/迅速地
Dave was in a hurry to get back to work.
戴夫急于回去工作。
He said shortly, “I don’t know you and I’m in a hurry.”
他不耐烦地说，“我不认识你，而且我在赶时间。”
hurry to do sth.
= go to do sth. in a hurry 匆忙做某事
We must hurry to catch up.
我们必须赶紧追上。
The sick child was hurried to the hospital.
生病的小孩被赶紧送往医院。
from now on 从现在开始；从今往后
From now on, these naughty boys will study hard.
从现在开始，这些淘气的男孩子要好好学习了。
I suggest that we should talk in English from now on.
我建议我们大家以后交谈时用英语。
4. I’ll do that from now on.
from now on“从现在起”，是以现在为起点延续下去，谓语通常用将来时态。
from then on“从那时起”，是以过去为起点延续下来，谓语通常用过去时态和完成时态。如：
She is going to live with you from now on.
她打算从现在开始和你一起生活。
From then on, he hasn’t seen his uncle again.
从那以后他再也没有看见他叔叔了。
词语辨析
1. from now on 是“从现在开始”，可以用一般现在时、一般将来时。
例：
From now on I will work harder.
从现在开始，我会更加努力地工作。
It will be easier from now on.
从现在起就会更简单了。
2. from then on是“从那时开始”，一般指过去的某时间。可用一般过去时、现在完成时（从那个时间点到现在）。例:
From then on I have gotten three toys from my father.
自那时起，我已从我父亲那里得到了三个玩具。
If you do things _______, usually you can’t do them well.
A. in a hurry B. from now on
C. just now D. at once
【解析】in a hurry意为“匆忙地”；from now on意为“从现在起”；just now意为“刚刚，现在”；at once意为“立即，马上”。由句意“如果你匆忙做事，你经常会做不好的”，故选A。
A
(1) It is hard to do … 做……很难
It is hard to imagine how people will get through the winter.
难以想象人们将怎样熬过这个冬天。
It is hard to picture life a hundred years
ago.
我们很难想象一百年前人们的生活。
5. But it is hard to stop riding in cars.
It is + adj. to do … 做……很……
It’s happy to…
It’s interesting to...
It is easy to…
It is important to …
lt is good to …
It’s bad to …
It’s difficult to …
It’s healthy to …
It is impossible to …
It’s useless to …
_____ is important to be nice to our parents.
A. This B. That C. It D. She
______ hard for me ______ _______ the homework on time.
对我而言，按时完成作业有困难。
C
It’s
to
finish
① It is + adj. for sb. to do …
常用于表示事物的特征特点，表示客观形式的形容词，如easy, hard, difficult, interesting, important, impossible等；
It’s impossible for me to finish such a task alone.
对我来说独自完成这一任务是不可能的。
② It is + adj. of sb. to do …
一般用表示人物的性格，品德，表示主观感情或态度的形容词，如good，kind, nice, clever, foolish, right。
It’s nice of you to help him without any hesitation.
你真是善良，能毫不犹豫地帮助他。
They stopped talking when they saw me.
看到我他们就中断了交谈。
Stop running about.
不要到处跑。
(2) stop doing sth. “停止做某事”， 表停止正在做的事情。
stop to do sth. “停下来去做某事”，即停止正在做的事，而去做另一件事。不定式为stop的目的状语。如：
They stopped to talk to me.
他们停下来和我交谈。
Let’s stop to have a rest.
让我们停下来休息一会儿。
知识链接
James, I’m too tired. Let’s stop ______ a rest.
A. having B. have
C. to having D. to have
Since you are tired, you’d better _______ and have a good rest.
A. stop to study B. stop study
C. stop studying
Class is beginning. Please stop ________.
A. talking B. to talk C. talk
D
C
A
D
We stopped _________, but there was not any sound.
A. to listen B. listens
C. listen D. listening
A
We have worked so long. Shall we stop ______ a rest
A. have B. to having
C. having D. to have
