英语九年级上册Topic 2 All these problems are very serious.一等奖教学ppt课件

这是一份英语九年级上册Topic 2 All these problems are very serious.一等奖教学ppt课件，文件包含Unit2SavingtheearthTopic2SectionCpptx、Unit2SavingtheearthTopic2SectionC教学设计docx、Unit2Topic2大单元整体教学设计docx、p39-1amp3、p39-1awmv、保护环境mp4、灾难片mp4等7份课件配套教学资源，其中PPT共28页， 欢迎下载使用。

After learning the lessn, we can:
Learn sme cre wrds and expressins f the text;
Talk abut the harm f pllutin.
Cmbine the key pints t frm a shrt passage.
Learning bjectives
In ur daily lives, we shuld face many envirnmental prblems. Our schl is abut t hld an Envirnmental Prtectin Day event, and each student needs t talk abut a type f pllutin and harms, as well as slutins. Can yu talk abut them?
The current envirnmental prblems are very serius.
Sme disasters are terrifying.
What’s yur feeling?
In ur daily life, we shuld face mre envirnmental prblems. Can yu say smething abut them?
cities/pllute
peple/ health prblems
factries/the land and the air
rivers and lakes/ dead
cut dwn/millins f
earth/take away
frests/deserts
a special kind f xygen called “zne” (O3)
Pre-reading
a very big hle in the zne layer
t much harmful radiatin frm the sun / pass thrugh
CO2 carbn dixide / increase
frm / “blanket”
the heat / can’t escape
cause / rise
call / the greenhuse effect
fewer trees
factry pllutin
traffic pllutin
the zne layer
mre carbn dixide
Match and predict the main idea f the passage.
The earth is 4.6 billin years ld. We humans have lived n the earth fr nly 35 000 years, but during this perid, we have changed ur planet a lt in many ways. Sme things we’ve dne are very gd fr the earth while sme are bad._________ All ver the wrld, peple have cut dwn millins f trees. When it rains r when the wind blws, the earth is taken away. Frests have becme deserts, s many kinds f animals and plants are disappearing.
Fewer Trees
A. Traffic pllutin B. Factry pllutin C. Fewer trees D. The zne hle E. Mre carbn dixide
Chse suitable titles.
____________ In big cities, cars and buses have plluted the air. Nw many peple in cities have health prblems.
_____________Factries have als plluted the land and the water. As a result, many rivers and lakes are nw dead._____________ Arund the earth, there’s a special kind f xygen called “zne”(O3). It is imprtant t the earth. But nw air pllutin is destrying it and making a very big hle in the zne layer. T much harmful radiatin frm the sun passes thrugh the hle and reaches the earth directly. This is very dangerus because this kind f radiatin can cause cancer.
Traffic Pllutin
Factry Pllutin
The Ozne Layer
________________ Carbn dixide (CO2) in the air has increased a lt. It mainly cmes frm burning il, cal and wd. This has frmed a blanket arund the earth. The heat frm the sun can’t escape s the temperature is rising. This is called “the greenhuse effect”. It causes the level f the ceans t rise and the climate f the earth t change. All these prblems are very serius, s we must d smething nw.
Mre Carbn Dixide
2.What des ur planet mean here? A. The sun. B. Mars. C. The mn. D. The earth.
3.In the passage, blanket refers t ____. A. carbn dixide arund the earth B. the zne layer in the sky C. the frests arund the wrld D. pllutin all ver the wrld
4.The wrd it in Paragraph5 refers t ____. A. CO2 B. O3 C. O2 D. H2O
5. What is the best title fr this passage ?A. Envirnment Prblems B. Pllutin n the EarthC. Hpe fr the Future D. The Greenhuse Effect
Chse the answers.
Retell it.
cars and buses pllute air, health prblems
pllute land and water, rivers and lakes dead
harmful radiatin reaches the earth, cause cancer
factry pllutin
Cmplete the tables.
The earth is taken away. take away:Eg:难道你要拿走他们的铅笔吗？Are yu gingt t their pencils?
Language pints
As a result, many rivers and lakes are dead.
结果，许多河流和湖泊都死了,没有活的生物。
1. As a result：因此，结果
Eg: 因此，他们会非常具有说服力。 , they can be very persuasive.
As a result
The harmful radiatin passes thrugh the hle .
pass thrugh the hle
pass thrugh
空气可以通过潮湿的布料。Air will the wet clth.
pass thrugh
It causes the level f the ceans t rise and the climate f the earth t change.
它导致了海平面的上升以及地球气温的变化
1. the level f the ceans 海平面
2.cause:造成”、“使(发生)
Smking may cause lung cancer.
The bad news caused her t be sad.
cause sth.:
1. _________, many rivers and lakes harmful radiatin______________ the hle _________the level f ceans ___________.
4. The earth ______________ (泥土被带走）.
Fill in the blanks
As a result
are dead
passes thrugh
is taken away
2 Cllect mre infrmatin abut envirnmental prblems and effects. Then discuss the infrmatin in grups and take ntes.
Traffic nise is lud and seriusly affects the nrmal life f residents.
Increasing atmspheric temperature creates a "heat island effect".
Traffic pllutin
Pst-reading
3. Cmbine the key pints in 1c and 2 t frm a shrt passage and pay attentin t the prper linking wrds.
As we all knw, water pllutin is becming mre and mre serius. Sme factries pur waste water int the rivers. As a result, it makes the water dirty and smell terrible. Mst f fish in the water have died and we can’t swim in the water. Water is very imprtant t human beings, s we shuld d ur best t prtect and save it. Luckily, ur gvernment is taking measures t prtect the water frm pllutin.
Yu can write it like this:
What shuld we d t prtect ur envirnment?
Plant mre trees
Thrw garbage int the trash can
Use clth bags fr shpping
Turn ff the light
Lw carbn travel, using public transprtatin such as buses
Prtecting the envirnment is everyne's respnsibility.