外研版（2019）必修第二册Unit 6 Earth first Starting out 课件(共21张PPT)

(共21张PPT)
Unit 6 Earth first
Starting out
by Ada
Starting out
Do you know what day April 22nd is
April 22nd is Earth Day.
What is Earth Day for
It’s an opportunity for every person to cherish and protect our planet.
Starting out
1 Watch the video and answer the questions.
1 Which of the facts in the video do you find most alarming
2 What does the video want to tell us
alarming adj. 令人惊恐的；令人惊慌的
Starting out
1 Watch the video and answer the questions.
1 Which of the facts in the video do you find most alarming
2 What does the video want to tell us
Severe environmental problems we’re facing nowadays makes our future uncertain. It’s time for everyone to take action now and make our planet a greener and safer place for our future generations.
Starting out
1 Watch the video and answer the questions.
Watch again and find where the answers are.
Starting out
Save Life on Earth
Earth, home1 countless plants and animals for millions of years, has an uncertain future.
How many of us are aware that 130,000 square kilometres of forest disappear every year. Around 25,000 trees 2 (cut) down each day just to make toilet paper. Each day, around 150 to 200 species of plants and animals become extinct -- 3 (near) 1,000 times the natural rate of extinction. Over 1 million animals are killed by ocean
4 (pollute) each year. 1 billion people don’t have clean
5 (drink) water. A plastic bottle can take 450 years to break down. The ice caps are more than 50% 6 (thin) than they were 40 years ago.
to
are cut
nearly
pollution
drinking
thinner
Starting out
Save Life on Earth
If we don’t change our ways, we are7 risk of ruining our planet and destroying many more plants and animals. Some day in the future, there may be no tigers, no horses, no butterflies, no dolphins and no whales; nor there be any trees8 flowers. All of these things will be gone. And we will be gone, too.
Time 9 (run) out. Our planet needs our help. It’s up to us to decide together 10 happens next.
at
or
is running
what
Starting out
2 Look at the pictures and answer the questions.
1 What environmental problem does each cartoon refer to
2 What are the causes of these problems
3 What do you think is the most serious environmental problem we face today What should be done to help solve it
Starting out
2 Look at the pictures and answer the questions.
1 What environmental problem does each cartoon refer to
Water pollution
Starting out
2 Look at the pictures and answer the questions.
1 What environmental problem does each cartoon refer to
Deforestation
deforestation n. 滥伐森林
Starting out
2 Look at the pictures and answer the questions.
1 What environmental problem does each cartoon refer to
Air pollution
Starting out
2 Look at the pictures and answer the questions.
1 What environmental problem does each cartoon refer to
Global warming
Starting out
2 Look at the pictures and answer the questions.
2 What are the causes of these problems
3 What do you think is the most serious environmental problem we face today What should be done to help solve it
We may have different answers of these questions. All in all, let’s watch a video and seek your answers from it.
Starting out
There is only one world, so what should we do in our daily life to protect it
Starting out
Language points
1. alarming
adj. 让人担忧的；令人恐慌的；
alarm v. 使担忧；使恐惧；使警觉 n. 警报；警报器；恐慌；闹铃--- alarmed adj. 担忧的；惊恐的
---alarmingly adv. 令人惊恐地；让人担忧地
①raise the alarm 发出警报；引起警觉
②set the alarm 设定警报器；设置闹钟
③be alarmed at/by 为......担忧/惊恐
Starting out
Language points
Exercise
1. They should not be too alarmed the press reports.
2. The world forests are shrinking at an (alarm) rate.
3. We could not see what (alarm) him.
4. The alarm didn’t go this morning.
by
alarming
had alarmed
off
Starting out
Language points
2. extinct
adj. 灭绝的；绝种的
extinction n. 灭绝；绝种
①an extinct species 已灭绝的物种
②species in danger of extinction 有灭绝危险的物种
③be close to extinction 濒临灭绝
④protect... from extinction 保护......免于灭绝
Starting out
Language points
Exercise
1. The e (灭绝) of the dinosaurs occurred long before humans came into being.
2. According to Jack, it is (globe) warming that leads to the extinction of many animals.
3. Conservationist are trying to protect the whales . extincion.
4. It is 250 years since the wolf (become) extinct in Britain.
xtincion
global
from
became
Starting out
Language points
3. refer to
提到，谈到；查阅，参考；涉及，关于
refer v. 把......归于；移交；提交(to)
--- reference n. 参考；参照；注释；参考书
①refer to... as... 称......为......
②refer sb./ sth. to sb. 把某人介绍给某人(以求帮助)/把某事交给某人(解决)
③in/with reference to 关于
Starting out
Language points
Exercise
1. Coal is usually referred to a fossil fuel.
2. Write down the phone number of that restaurant for future r (查阅).
3. Some scientific stories this book (refer) to have come true now.
4. When (read), you’d better avoid referring to your dictionary too often.
as
eference
refers
reading
Thank you for watching