仁爱科普版九年级上册Topic 2 All these problems are very serious.背景图课件ppt

这是一份仁爱科普版九年级上册Topic 2 All these problems are very serious.背景图课件ppt，共25页。PPT课件主要包含了课前检测， oxygen，Retell it ，Summary，isen，ole，scape，orms等内容，欢迎下载使用。
The earth is abut 4,600 millin years. 1 / ˈmɒdn / man has lived n the earth fr nly 35,000 years. But 2 /ˈdjʊərɪŋ/ that time, human beings have changed ur planet in many ways. Many f the things that we have dne are gd, 3 mre are nt gd fr the earth. Water pllutin. Factries have 4 (pllutin) that land and the water. As a result, many rivers and lakes are nw 5 (die). Air pllutin. In big cities, as well 6 cars, trucks and buses are the main cause f air pllutin. Mexic city used t be a beautiful sunny 7 /ˈkæpɪtl /, but tday it is always cvered by thick brwn cluds. Sil pllutin. In rder t have a gd harvest, mst f the farmers use chemicals t 8 (many) in their fields. Hpe fr the future. The prblems are very serius fr ur future, s all f us shuld d 9 t imprve ur envirnment. If we can stp pllutin, ur planet will becme mre and mre beautiful and ur 10 (healthy) will be better. Let's be a greener peple!
The earth mther is 4.6 billin years ld. She was very beautiful in the past. But recently, he has been ill. What has happened t her?
There are t many envirnmental prblems n the earth.
In ur daily life, we shuld face mre envirnmental prblems.
Can yu say smething abut them?
cities, pllute, health prblems
factries, the land and the air, dead
cut dwn, millins f, take away the earth, becme desert
a special kind f xygen called “zne” (O3)
a very big hle in the zne layer, t much harmful radiatin frm the sun
n.洞，坑
v.出现，形成n.种类，形式
CO2 carbn dixide increase a lt, frm a “blanket”, the heat frm the sun can’t escape
cause the level f the sea t rise called “the greenhuse effect” r “glbal warming”
fewer trees
factry pllutin
traffic pllutin
the zne layer
mre carbn dixide
Can yu match them?
1a Read and understand.Lk at the fllwing pictures and predict the main idea f the passage.
Chse suitable titles fr Paragraphs 2-6. Then write it dwn in frnt f each paragraph.
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
____________ 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
1b Read 1a and cmplete the fllwing tasks.
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 ? Envirnment Prblems B. Pllutin n the Earth C. Hpe fr the Future D. The Greenhuse Effect
1a Read and understand.
Write dwn nly the key wrds when taking ntes.
1c Cmplete the ntes accrding t 1a.
cars and buses pllute air, health prblems
pllute land and water, rivers and lakes dead
harmful radiatin reaches the earth, cause cancer
factry pllutin
2 Surf the Internet t cllect mre infrmatin abut envirnmental prblems and effects. Then discuss the infrmatin in grups and take ntes.
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:
We learn: 1. Sme wrds: hle, frm, rise 2. Sme phrases: take away, refer t 3. Sme sentences: All these prblems are very serius, s wemust d smething nw. We can: 1. Talk abut the harm f pllutin. 2. Cmbine the key pints t frm a shrt passage.
一、根据句意及首字母提示写出正确的单词。1. The river has r because f the heavy rain.2. Yu shuld dig a big h in the earth first if yu want t plant a tree.3. She managed t e frm the burning car thrugh she was badly hurt.4. Playing ftball is ne f the f f physical exercise.
二、单项选择。1. I gt up late this mrning, ,I missed the chance f the interview.A. as a result B. by the way C. in the beginning D. in this way2. Is there in tday's newspaper?A. nthing new B. anything new C. new nthing D. new anything3. The child will g the rad after the light turns green.A. thrugh B. crss C. acrss D. crsses4. His dg fr tw weeks.A. died B. has been dead C. has died D. is dying5. Remember this, careful yu are, mistakes yu will make.A. the mre; the fewer B. the mre; the lessC. the mre, the few D. the little; the few
Hmewrk
2. 完成Sectin C活动3。
1. 复习Sectin C。
3. 完成练习册Sectin C。
4. 预习Sectin D。