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课件网) Unit 2 Topic 2 All these problems are very serious. Section C Learning objectives We learn: 1. Some words: hole, form, rise 2. Some phrases: take away,refer to 3. Some sentences: All these problems are very serious, so we must do something now. 4. Talk about the harm of pollution. 5. Combine the key points to form a short passage. Review What’s it about (1)_____ of us knows how to stop the bad behavior. (2) I knocked on the door but _____ answered. (3) Some of these books are better than_____. (4) She was driving the car with one hand and wiping the window with the _____. (5) They are beautiful but I am looking for _____ useful. Fill in the blanks using something, anything, others, nobody, everyone, anybody, everywhere, none, other. None nobody others other something Review What’s it about (6) Is there _____ you can do to help her (7) There’re 5 000 people living here and almost _____ ___has his/her own car. (8) He’s cleverer than _____ I know. (9) I’ve looked _____ __ but I can’t find it. Fill in the blanks using something, anything, others, nobody, everyone, anybody, everywhere, none, other. anything everyone anybody everywhere Free talk In our daily life, we should face more environmental problems. Can you say something about them In big cities,cars and buses have polluted the air. Factories have also polluted the land and the water. In our daily life, we should face more environmental problems. Can you say something about them People have cut down millions of trees. Air pollution is destorying ozone. Free talk Free talk CO2 carbon dioxide increase a lot, form a “blanket”, the heat from the sun can’t escape New words take away 拿走 oxygen [ ks d ( )n] n.氧气 hole [h l] n.洞,坑 ozone layer [ z n'[ le ] ] 臭氧层 radiation [re d e ( )n] n.放射，放射物 New words directly [d 'rektli] adv.直接地 carbon dioxide [ kɑ b n] [da ksa d] 二氧化碳 form [f m] v.出现 blanket [ bl k t] n.毛毯，毯子 New words escape [ 'ske p] n.&v.逃跑；逃脱 rise [ra z] v.上升，上涨 the greenhouse effect 温室效应 refer [r f ] 提到，涉及，有关 What’s it about take away hole directly form rise radiation oxygen blanket escape refer to the greenhouse effect Work on 1a What’s it about Read and understand.Look at the following pictures and predict the main idea of the passage. fewer trees factory pollution traffic pollution the ozone layer more carbon dioxide What’s it about Choose suitable titles for Paragraphs 2-6. Then write it down in front of each paragraph. A. Traffic pollution B. Factory pollution C. Fewer trees D. The ozone hole E. More carbon dioxide 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’ve done are very good for the earth while some are bad. _____ _ All over the world, people have cut down millions of trees. When it rains or when the wind blows, the earth is ... ...
