资源简介

(共22张PPT)
Unit 5
Looking into nature
Listening and speaking
学习目标
听懂关于亚马逊沸腾河的听力材料，获取并梳理沸腾河的特征、当地人的用途及说话者观点等细节信息。
掌握could, may, might, maybe, perhaps 等词及相关句型，能够谈论自然奥秘的可能性。
了解单词重音变化对词性和词义的影响，提升语音意识。
Look at the pictures and think about the questions.
What do you see in the pictures
Do you know them very well
新课讲授
Read “DID YOU KNOW” and match the pictures with the names of the secrets.
black hole
Bigfoot
The Loch Ness Monster
the beginning of the universe
black hole
Bigfoot
The Loch Ness Monster
the beginning of the universe
Think about the question and share in class.
Which of the secrets interests you most
A group of people are on a guided tour, and the guide is talking about an unsolved secret in South America.
亚马逊雨林
adj. 很热的，滚烫的
Pre-listening
Listen to the talk and choose the correct topic.
a A disappearing river in South America.
b The life of the people in the Amazon rainforest.
c A boiling river in the Amazonrain forest.
What is special about the river
While-listening
1
What information should you listen for
Read and think
What is it
It is a boiling river as hot as 1____________ ℃.
What do the local people do with it
· They 2____________with it.
· They clean with it.
· They make 3____________ with it.
· They sometimes go swimming in it, but only after 4__________.
What's the speaker's opinion
It's one of the most 5_______________ of the rainforest.
Listen again and complete the profile.
86
cook
tea
heavy rain
amazing wonders
2
Listen again and answer the questions.
How hot is the river
What do the local people do with it
What does the speaker think of the river
It is as hot as 86℃.
They cook, clean and make tea with it. And they sometimes go swimming in it after heavy rain.
He thinks that it’s one of the most amazing wonders of the rainforest.
令人惊叹的奇迹/奇观
What’s the speaker’s opinion
Listening for opinions Expressions such as I think, I believe and
I guess show people's opinions. Remember: people are sharing their ideas, so you don't have to agree. But you should listen to the other person's opinions and be polite.
Learning to learn
Why do you think the river is so hot
Think and share
The tourists and the guide are having a heated discussion about the reasons.
n. 火山
n. 化学物质
adj. 不太可能的
Read and predict
Listen to the conversation and complete the table.
Tourists' ideas
The guide's opinions
The ancient people's idea is possible. There's much 1________.
It's unlikely for the sun to
2____________ that much.
Perhaps the river passes a volcano and 3____________
That's not the reason. The nearest volcano is about 4_________ away.
Maybe there are some chemicals 5__________. They can 6________ heat.
That's 7________, but scientists haven't found any yet. More 8________ is needed.
sunshine
heat the river
becomes hot
700 km
in the water
produce
possible
research
3
How many possible reasons are mentioned in the conversation
Are the tourists sure of their ideas How do you know
Talking about possibilities Could, may and might are used to talk about possibilities. Words such as maybe and perhaps are used, too. We can also use the structure It's certain /likely /possible that ...
Learning to learn
Read and answer
Work in pairs, role-play a guide and a tourist, and discuss the possible reasons of the Boiling River.
Perhaps/Maybe...
It’s unlikely for...to do…
That’s possible.
Role-play
What unsolved secrets of nature do the pictures show
Crop circles (麦田怪圈) are special patterns in crop fields, usually appearing overnight. Some guess they are made by humans for fun or art, by animals’ activities, by strong winds, or left by aliens or UFOs.
Post-listening
Atlantis (亚特兰蒂斯) is a famous ancient legend of a rich, beautiful island that disappeared suddenly. People think it might be destroyed by a big earthquake, flooded by a huge flood or tsunami, sank due to volcano eruptions, or just a story that is not real.
What unsolved secrets of nature do the pictures show
Work in pairs. Choose one unsolved secret of nature and talk about possible explanations.
Have you heard of...
Yes, it's very strange. I'm curious about the possible reasons.
Perhaps it's because...
4
Useful expressions
The truth may be...
It's likely that ...
Perhaps it's because ...
It's probably a result of ...
There's a (strong) possibility that ...
It's possible that ...
There's a chance that ...
A: Have you heard of Atlantis
B: Yes, it's very mysterious. I'm curious about the possible reasons.
A: Perhaps there was an island.Something made the island sink into
the sea.
B: That's possible. An earthquake might have caused it.
A: Yes, maybe. It's also possible that the city disappeared because
of rising sea levels.
B: Or maybe Atlantis never existed and it's just a story.
A: Yes, that could be true!
Write a short passage to introduce the
Boiling River, including its temperature,
uses, the guide’s opinions, and possible
reasons.
Homework

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