Unit4Globalwarming课件3（新人教选修6）.ppt

Section Ⅲ　Learning about Language Using Language;Step One：Warming up As is known to us，the earth is becoming warmer and warmer now，which does a lot of damages to us.Global warming can cause snow disaster；Flood；Drought；famines；diseases；disappearance of species and so on.So the earth is in danger.; What can we do about global warming? Let’s come to our text. ________________________________________________________________________;Step Two：Reading Ⅰ.Scan the text and then choose the best answer according to the text. 1．What can we do about global warming in our house according to Earth Care? A．Do not use any electrical appliance. B．Never watch TV. C．Try to save as much electricity as possible. D．Ride a bike instead of using a car. 答案：　C; 2．According to Earth Care，after drinking a cola，we should________. A．throw the can away B．buy another one C．start working as soon as possible D．keep the can for recycling 答案：　D;3．What can we do by simply using our mouth? A．Persuade our parents to buy energy-saving products. B．Pass the knowledge of global warming to other people. C．Plant trees in our garden of school. D．Both A B. 答案：　D;4．From the first letter we know Ouyang Guang is most probably a________. A．school teacher　　　　　　　B．schoolboy C．young parent D．newspaper boy 答案：　B; 5．What are the purposes of the two letters? A．To discuss the cause of global warming. B．To ask and give advice on what to do about global warming. C．To call on people to fight against global warming. D．To say “hello” to each other. 答案：　B;Ⅱ.Work in pairs or groups.Fill in the blanks below according to the text. What can we do about global warming？;Earth Care’s suggestion; 答案：　1.environmental　2.improvements　3.make a difference　4.the greenhouse gas　5.turn off　6.Walk　7.recycled　8.economical　9.trees　10.global warming; average (1)adj.平均的，普通的 The greenhouse effect gives the earth’s surface the average temperature of 15 ℃.(教材P29) 温室效应使地球表面的平均温度保持在15 ℃。; ①The average age of the students in my class is 18. 我班学生的平均年龄