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(共29张PPT)
Unit 7
Space exploration
Listening & Speaking
沪教版（2024）八年级
下
Learning objectives
0
Lead in
Pre-listening
2
While-listening
Post-listening
4
Speaking
Pronunciation
6
Deepthinking
Summary
8
Assessment
1
3
5
7
9
Homework
1
0
By the end of the lesson, I will be able to...
1
2
master key words and expressions about space exploration.
get main ideas and details while listening and talk about space simply.
think about space problems and show interest in science.
00
Learning objectives
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3
Lead in
01
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Why is space junk a problem
Watch and answer.
Lead in
01
Where does space junk come from
It comes from old spaceships
Does space junk fly fast
Yes, it flies very fast in space.
Is space junk dangerous
Yes, it is very dangerous.
Why is space junk a problem
It may hit spaceships and hurt astronauts.
Pre-listening
02
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1 You are going to listen to a lecture. Look at the picture below.
What do you think the lecture will be about Discuss in pairs.
Why is space junk a problem
Space junk
While-listening
03
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There are tens of thousands of _______ _______ in orbit around the Earth. Many of them are useful thins, like space stations and weather satellites. However, people have left lots of unwanted objects in space too, such as parts of old rockets. These objects are known as _______ ________.
2 Listen to the lecture and check if your guesses were correct.
Then write down the main idea of the lecture.
What space junk is and why it is a big problem for us.
While-listening
03
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There are tens of thousands of man-made objects in orbit around the Earth. Many of them are useful thins, like space stations and weather satellites. However, people have left lots of unwanted objects in space too, such as parts of old rockets. These objects are known as space junk.
人造（物品）
太空垃圾
While-listening
03
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Since the 1950s, people have sent over 10,000 ________ into space. Many of these satellites have stopped working, but they are still in orbit because it is too expensive to bring them back to the Earth. Astronauts have also dropped things during their spacewalks, such as cameras, gloves and tool bags. These objects continue to orbit the Earth as space junk.
satellites
While-listening
03
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Space junk is a big problem, and it is getting worse. Every year, we send more and more things into orbit, and this mean more and more space junk in orbit too. Most pieces of space junk are very small, but they can still be very dangerous. Objects in orbit, such as satellites and spacecrafts, are travelling very, very fast. This means a small piece of space junk can destroy a spacecraft or satellite. When this happens, the spacecraft or satellite is broken up into hundreds of pieces, and there will be even more space junk in orbit.
摧毁v.
人造卫星
While-listening
03
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Scientists are very worried about space junk because it can make
space missions very dangerous. If there is too much space junk in orbit, it will become impossible to travel into space. Countries around the world need to work together to solve this difficult problem.
Script：
太空任务
Post-listening
04
a b c
(2) Why can tiny pieces of space junk destroy spacecraft and satellites
a Because spacecraft and satellites travel very fast.
b Because most pieces of space junk are man-made objects.
c Because the amount of space junk is growing fast.
Post-listening
04
a
Post-listening
04
(3) What problems can space junk cause
a It may fall back to the Earth and hurt people.
b It may make space missions dangerous.
c It may hit satellites and spacecraft in orbit.
b c
Post-listening
04
4 What can we do to solve the problem of space junk
Discuss in pairs.
Post-listening
04
Report
Speaking
05
Discussing possibilities of living on Mars
1 Two students are talking about going to Mars. Read the dialogue and
learn how to express possibility and impossibility.
Pay attention to the expressions in blue.
S1: I’m going to visit Mars.
S2: That’s impossible! You must be joking.
S1: No, I’m not joking. It’ll be possible to travel to Mars in the near future!
S2: Says who
S1: The scientists. They say that we’ve made great progress in Mars exploration. So it’s very likely that we’ll be able to fly there by the 2050s.
S2: I still think it’s unlikely.
2 Do you think people will be able to live on Mars in the future
Discuss in pairs. Use the facts below to help you.
Speaking
05
What scientists know about Mars
There’s very little oxygen. The air is mostly CO2 (about 95%).
It’s very cold (average surface temperature: -63 °C).
The air is thin, so the radiation levels are high.
There is ice on Mars’s north pole. In the future, water may allow people to
survive there.
Of all the planets, the environment on Mars is most similar to the Earth’s.
There are different seasons on Mars, just like on Earth.
辐射
平均的
be similar to与……相似
When we talk about things we are not sure about, we can use the expressions below.
Tip
Expressing possibility
It’s possible to...
It’s (very) likely that...
It’s quite probable that...
There is a good chance that...
Expressing impossibility
It’s impossible to...
It’s unlikely that...
I seriously doubt that...
That’s impossible!
Loud 大声
correct 描述正确
complete 描述完整
checklist
Improve your communication
Speaking
05
可能性
Deep thinking
07
Let’s think about it.
While space junk threatens Earth’s orbit, exploring Mars offers a hopeful new frontier for humanity’s future in space.
Summary
08
The words we have learned
1.There are many ____________________ around the Earth, like old rockets.
2.Small pieces of ____________ can ____________ satellites easily.
3.Things that travel in ____________ move very fast.
4.________________ are becoming more dangerous because of space junk.
5.We must clean up ____________ to protect spacecraft.
6.Some _________________ fall out of ____________ and burn up.
7.Space junk may ____________ important tools for ____________.
用方框中所给单词、短语的适当形式填空。
space junk, destroy, man-made objects, space missions, orbit
Space missions
man-made objects orbit
destroy space missions
space junk
orbit
space junk destroy
man-made objects
Unit 7 Space exploration
Listening and speaking
二、Speaking: Living on Mars
核心话题：Can we live on Mars
Mars Facts
Challenges: little O , cold, high radiation
Advantages: ice (water), similar environment, seasons
Key Sentences
Possibility: It's possible/likely that...
Impossibility: It's impossible/unlikely that...
一、Listening: Space junk
核心问题：
Why is space junk a problem
What is it
Man-made objects in Earth's orbit (e.g. broken satellites, rocket parts)
Why dangerous
Fast speed → destroy spacecraft/satellites
→ risk space missions
Problems:
Endanger space missions
Hit satellites/spacecraft
Fall to Earth and hurt people
Assessment
09
Self-assessment
I can master key words and expressions about space exploration.
I can get main ideas and details while listening and talk about space simply.
I can think about space problems and show interest in science.
Basic (基础)
Improving(提升)
Extend (拓展)
Homework
10
1.抄写本节课核心词汇与短语，每个单词 / 短语造 1 个句子，背诵并默写。
2.完成听力教材配套练习题，对照答案订正，标注错题原因。
3.朗读口语对话部分，录制 1 分钟音频，确保发音准确、流畅。
1.写一篇 60-80 词的短文：My opinion on space exploration，运用本节课所学的可能性 / 不可能性句型，表达对太空探索的看法。
2.整理听力原文中的关键句，翻译为中文，巩固听力理解。
3.结合 “火星居住” 话题，用 5 句话总结人类在火星生存的困难与希望。
1.查阅资料，用英文简要介绍一个中国的太空探索项目（如嫦娥、天问系列），字数 100 词左右，下节课分享。
2.尝试用英文设计一个 “太空垃圾清理方案”，画出简单示意图并配英文说明，锻炼创新与英文表达能力
(二选一）
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