Unit 3 Lesson 2 The environment Reading(1)课件(共32张PPT)

(共32张PPT)
九年级下册-上海教育出版社-英语-第三单元
Unit 3 The environment
Lesson 2 Reading
学习目标
pollution
sea-level rising
animals dying
climate changing
global warming
Topic talking: The world is in danger
What do you know about the greenhouse effect
atmosphere
大气层 n.
temperature
气温 n.
carbon dioxide
二氧化碳 n.
increase
升高 v.
e
f
b
d
c
a
Matching P34 A1
2. What problems does the article discuss
1. What is the article mainly about
Environmental problems.
The greenhouse effect
Cutting down forests
Bad habits
Title
Introduction
Sub-headings
Pre- reading: Prediction
Pre- reading
The article is probably from
a(n) ______.
A. advertisement （广告）
B. poster about the Earth Hour
C. environmental science book
D. comic（连环画）book
A. A narration (记叙文)
B. A description（描述文）
C. An argumentation（议论文）
D. An exposition（说明文）
Pre- reading
What is the genre (体裁) of
this article
narration
description
argumentation
exposition
记叙文是记人叙事的文章，例如故事类、人物传记类的文章，通常包含时间、地点、人物、事件的起因、过程和结果等要素。 （5Ws +1H）
描述文以描绘人物、事物、景物为主，刻画和描摹人物的外貌、动作；事物的性质、形态；景物的状貌、变化。
议论文是一种剖析事物、论述事理、发表意见、提出主张的文体。
说明文是用简明的语言，客观、准确、科学地解说事物或阐述事理的一种文章体裁。(What/ Why/ How)
A. A narration （记叙文）
B. A description（描述文）
C. An argumentation（议论文）
D. An exposition（说明文）
Pre- reading
What is the genre (体裁) of
this article
It is a type of informational text that tells something about a topic or an idea to readers. The purpose is to inform, explain, describe or define the subject to readers. We will find some facts, examples, supporting details and sometimes the author’s own opinion in the text.
Reading for structure
Reading for structure
Our world is in danger.
The greenhouse effect
We must take proper action.
Cutting down forests
Bad habits
Introduction
Main problems
Solution
Reading for details
The greenhouse effect
What is the atmosphere
around the world like
2. What may the greenhouse
effect cause
What is the atmosphere around the world like
Reading for details
The atmosphere around the Earth is necessary for all living things. It is like the glass of a greenhouse, letting sunlight in and keeping heat from getting out. Without it, the Earth would be the same as the Moon—cold and lifeless.
=no life
The greenhouse effect
When we burn fuels such as petrol and coal, we produce a gas called carbon dioxide(CO2). Too much of this gas pollutes the atmosphere, and causes it to keep in too much heat. As a result of the greenhouse effect, the Earth’s temperature is increasing. This causes sea level to rise, and in the future may cause cities to disappear.
Complete the following chart
Causes原因
The greenhouse effect
A. 气体 B. 垃圾 C. 木头 D.燃料
burn fuels
produce CO2
temperature: increase
sea level: rise
cities: disappear
Effects结果
Cutting down forests
Cutting down forests
Cutting down forests _______ the ______ of the animals and ________ ______ soil erosion (水土流失)，________ and even more __________ to our world.
destroys
homes
results
in
floods
damage
Every year, we destroy nature by cutting down huge areas of forests. This makes the greenhouse effect worse because trees take in CO2 and produce oxygen. Cutting down trees also destroys the homes of the animals that live in our forests, and causes the surface of the soil to be easily destroyed by rain. This can result in floods and even more damage to the environment.
Bad habits
Bad habits
Create mountains of rubbish
Throw them away
Use things once
Many of our habits cause pollution. People often use things once and then throw them away, or leave them on the ground as litter. This creates mountains of rubbish and pollutes our land and seas.
Pollute our land and seas
Solution
Make a list
1. Become green consumers.
2. Recycle things.
3. Reuse things for the same
purpose as before.
4. Use things for new purposes.
Solution: take action
In order to protect the environment, we need to take proper action. We should be different from many consumers and become “green consumers”. This means that we should only buy and use products friendly to the environment. We should also recycle as many things as we can. We can reuse things for the same purpose as before, or we can use them for new purposes. If we just learn to live in new and different ways, we can make a difference.
Reading sub-skills
理解所读材料的主旨大意；
理解所读材料的具体信息；
根据上下文和构词法推断、理解生词的含义；
对所读内容做出简单的判断和推理；
理解文段中各句子之间的逻辑关系；
理解作者的意图、观点和态度；
理解故事的情节，预测故事情节的发展和可能的结局。
What does the underlined word “This” in L21 refer to
A. The carbon dioxide.
B. The atmosphere.
C. The greenhouse effect.
D. The increasing temperature.
Tip: 联系上文，弄清指代关系
More exercises are on P37 D1
Comprehensions 实战演练
2. The purpose of the article is to make_________.
A. people do more to protect the environment
B. more people become consumers
C. people learn more about the atmosphere
D. people change their bad habits
考查作者意图
Tip:理解主旨大意，切忌以偏概全。
考查推断能力
Tip: 寻找相关依据，
做出正确推断。
3. If there are more trees, the amount of CO2 will be____.
A. more B. less
C. the same D. none
Every year, we destroy nature by cutting down huge areas of forests. This makes the greenhouse effect worse because trees take in CO2 and produce oxygen.
Line25-30
Post-reading:
Causes and effects
As a r______ of the greenhouse effect, the Earth’s temperature is i___________, sea level is rising and cities may disappear. Cutting down forests d_______ the homes of the animals and results in soil erosion, f______ and even more damage to our world. Our bad habits create mountains of rubbish and pollute our land and seas. Therefore, we should take p______ action.
Fill in the blanks
result
increasing
destroys
floods
proper
Post-reading: Deep thinking
What will happen if we don’t make a difference
Let’s live a low-carbon life!
Travel by public transportation.
Turn off lights or electric appliances when not using.
Take a shorter shower instead of a bath.
Do waste sorting.
Get rid of bad habits.
Reduce, reuse and recycle.
…
分
体裁
说明文
总
总
Summary
中心突出
科学性
条理性
小标题
段落主题句
各段主题
均从不同角度
解释篇章主旨
猜词
微技能
作者意图
推断
分析
原因
结果
指代
Summary
广州市越秀区教育局
Find out more environmental problems that we face and make a list of what we should do to protect our world.
Finish the exercises on P36-37.
Homework
Thank you!