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1、UNIT 2 SAVING THE EARTHTOPIC 2 ALL THESE PROBLEMS ARE VERY SERIOUS. Section C(1)_ of us knows how to stop the bad behavior.(2) I knocked on the door but _ answered.(3)Listen! _is knocking at the door.(4) _ is difficult if you put your heart into it.(5) _ is ready. Lets begin.(6) Be quiet.I have _ im
2、portant to tell you.(7) Is there _ you can do to help her?(8) Therere 5 000 people living here and almost _has his/her own car.(9) Im new here. I dont know _ here.(10) Ive looked for my pen _ but I cant find it anywhere.Fill in the blanks using something, anything, everything, nothing，nobody, everyo
3、ne, anybody, everywhere, none, someone.NonenobodysomeoneEverythingsomethinganythingeveryoneanybodyeverywhereNothingWhat kind of environment do you want? What should we do to protect our environment ? In our daily life, we should face more environmental problems. What are they,do you know? cities, po
4、llute, health problems factories, the land and the water, dead cut down, millions of, take away the earth, become deserts拿走拿走 oxygen a special kind of oxygen called “ozone” (O3)臭氧臭氧 oxygen氧气氧气 a very big hole in the ozone layer, too much harmful radiation from the sun臭氧层放射，放射物 n.洞，坑v.出现，形成n.种类，形式CO2
5、 carbon dioxide increase a lot, form a “blanket”, the heat from the sun cant escape二氧化碳毛毯，毯子渗出；逃跑；逃脱 called “the greenhouse effect” cause the level of the sea to rise温室效应温室效应v.上升上升；起床；起床；升起升起All these problems are very serious, so we must do something now.fewer treesfactory pollutiontraffic pollutio
6、nthe ozone layermore carbon dioxideCan you match them?Choose suitable title for each paragraph. Then write it down in front of each paragraph. _ All over the world, people have cut down millions of trees. When it rains or when the wind blows, the earth is taken away. Forests have become deserts, so
7、many kinds of animals and plants are disappearing.Fewer TreesA. Traffic pollution B. Factory pollution C. Fewer trees D. The ozone hole E. More carbon dioxide _ In big cities, cars and buses have polluted the air. Now many people in cities have health problems. Traffic PollutionA. Traffic pollution
8、B. Factory pollution C. Fewer trees D. The ozone hole E. More carbon dioxide_Factories have also polluted the land and the water. As a result, many rivers and lakes are now dead.Factory PollutionA. Traffic pollution B. Factory pollution C. Fewer trees D. The ozone hole E. More carbon dioxide_ Around
9、 the earth, theres a special kind of oxygen called “ozone”(O3). It is important to the earth. But now air pollution is destroying it and making a very big hole in the ozone layer. Too much harmful radiation from the sun passes through the hole and reaches the earth directly. This is very dangerous b
10、ecause this kind of radiation can cause cancer. The Ozone Layer直接地直接地A. Traffic pollution B. Factory pollution C. Fewer trees D. The ozone hole E. More carbon dioxide _ Carbon dioxide (CO2) in the air has increased a lot. It mainly comes from burning oil, coal and wood. This has formed a blanket aro
11、und the earth. The heat from the sun cant escape so the temperature is rising. This is called “the greenhouse effect”. It causes the level of the oceans to rise and the climate of the earth to change. More Carbon DioxideA. Traffic pollution B. Factory pollution C. Fewer trees D. The ozone hole E. Mo
12、re carbon dioxide2.What does our planet mean here? A. The sun. B. Mars. C. The moon. D. The earth. The earth is 4.6 billion years old. We humans have lived on the earth for only 35 000 years, but during this period, we have changed our planet a lot in many ways. Some things we have done are very goo
13、d for the earth while others are bad.3.In the passage, blanket refers to _. A. carbon dioxide around the earth B. the ozone layer in the sky C. the forests around the world D. pollution all over the world _ Carbon dioxide (CO2) in the air has increased a lot. It mainly comes from burning oil, coal a
14、nd wood. This has formed a blanket around the earth. The heat from the sun cant escape so the temperature is rising. This is called “the greenhouse effect”. It causes the level of the oceans to rise and the climate of the earth to change. More Carbon Dioxide4.The word it in Paragraph5 refers to _. A
15、. CO2 B. O3 C. O2 D. H2O_ Around the earth, theres a special kind of oxygen called “ozone”(O3). It is important to the earth. But now air pollution is destroying it and making a very big hole in the ozone layer. Too much harmful radiation from the sun passes through the hole and reaches the earth di
16、rectly. This is very dangerous because this kind of radiation can cause cancer. The Ozone Layer5. What is the best title for this passage ? A.Environment Problems B. Pollution on the Earth C. Hope for the Future D. The Greenhouse Effect Write down only the key words when taking notes. 1c Complete th
17、e notes according to 1a. ProblemEffect on the environmentfewer trees forests become deserts, animals and plants disappeartraffic pollution greenhouse effect, level of oceans rising, climate changecars and buses pollute air, health problemspollute land and water, rivers and lakes deadharmful radiatio
18、n reaches the earth, cause cancer factory pollution ozone hole more CO2We learn: 1. Some words: hole, form, rise 2. Some phrases: take away, refer to 3. Some sentences: All these problems are very serious, so wemust do something now. We can: Talk about the harm of pollution. 2. SURF THE INTERNET TO
19、COLLECT MORE 2. SURF THE INTERNET TO COLLECT MORE INFORMATION ABOUT ENVIRONMENTAL INFORMATION ABOUT ENVIRONMENTAL PROBLEMS AND EFFECTS. THEN DISCUSS PROBLEMS AND EFFECTS. THEN DISCUSS THE INFORMATION IN GROUPS AND TAKE THE INFORMATION IN GROUPS AND TAKE NOTES.NOTES.3. COMBINE THE KEY POINTS IN 1C 3. COMBINE THE KEY POINTS IN 1C AND 2 TO FORM A SHORT PASSAGE AND AND 2 TO FORM A SHORT PASSAGE AND PAY ATTENTION TO THE PROPER PAY ATTENTION TO THE PROPER LINKING WORDS. LINKING WORDS.
