1、单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,Unit 2,Saving the Earth,1/30,Topic 1,Pollution has caused too many problems.,Section A 课件 1,2/30,A:Where have you been/traveled?,B:I have been/traveled to.,3/30,Have you ever had a picnic?,Kangkang,Jane,Maria and Michael are planning a picnic for Sunda
2、y.,They will go to,the West Hill,.,4/30,What can you see there?,We can,see,bees and butterflies,dancing,.,bee,butterfly,Is the West Hill beautiful?,Guess,5/30,We can see,trees,grass,What can you see in the Picture 1?,flowers,butterflies,Step 1 Questions and answers,6/30,What has happened in Picture
3、2?,There are not flowers,grass,trees and butterflies.They have gone.The stream is dirty and there are too much waste in the stream.The factory is pouring waste water into the stream and water pollutes the stream and destroys the village.What a mess?,7/30,The flowers and grass,have,gone,!,Oh,my goodn
4、ess.What a mess!,Look!There are several chemical factories,pour,ing waste water,into,the stream.,=have,disappeared,.,Is it beautiful now?,What has happened there?,8/30,倒出;倾泻,pour into 把倒入,e.g.Pour red wine into the glass.,9/30,1b Listen to 1a and mark the words with P(Past)or N(Now).,_ beautiful _ b
5、utterflies _ dirty,_ grass _ terrible _ factory,_ bees _ fresh _ clean,_waste water,P,P,N,P,N,N,P,P,P,N,10/30,1c Read 1a and complete the sentences in the table.Then retell 1a to your partner.,Two years ago,Now,1.It was a _.,2.There were _.,3.The air was _ and you could see _.,1._,have gone.,2.The w
6、ater is _and smells _.,3.There are several _ pouring _ into the stream.,4._has changed.,beautiful place,lots of flowers and grass,fresh and the water was clean,bees and butterflies dancing,The flowers and grass,so dirty,terrible,chemical factories,waste water,Everything,11/30,2 Work in pairs.Look at
7、 the pictures and make up conversations similar to the example with your partner.,Example:,A:,There were lots of,flowers and grass,when I visited the,village,last year.,B:,But now the,flowers and grass,have,gone.,A:,What has happened here?,B:,The,villagers,have,destroyed,them.,lake/fish,factory/,pol
8、lute,hill/trees,farmers/cut down,village/flowers and grass,villagers/destroy,12/30,4 Work in groups and talk about pollution in a place you are familiar with.The following sentences may help you.,ago,it was Now,have/has gone.What has happened?Everything has changed.Oh,my goodness!,13/30,3 A.Listen t
9、o the sentences and number the pictures.,5,3,2,1,4,6,14/30,1.People _ _ _ too many trees,so I dont have enough leaves to eat.,have cut down,B.Listen again and complete the sentences.,15/30,2.I live in trees but now many trees _ _.,have gone,16/30,3.I like leaves and grass,but now they _ _.,have disa
10、ppeared,17/30,4.I _ _ hungry for months because of,less bamboo.,have been,18/30,5.Human polluted the sea,so,I _ _ _.,dont live happily,19/30,6.The water _ _ many years ago.But it _ _ _ for me to live in now.,was clean,is too dirty,20/30,Exercises,21/30,1.Smoking is harmful _ ones health.,A.in,B.at,C
11、on,D.to,D,22/30,2.Its only _ of time to speak to her.,A.a waste B.waste,C.to waste D.wasted,A,23/30,3.There are 30 students _ in this class.,A.read B.reading,C.read D.reads,B,24/30,4.I feel it is our duty not _ our environment.,A.pollute B.polluted,C.pollution D.to pollute,D,25/30,5.They _ London o
12、n Friday.,A.reached B.got,C.arrived D.arrived to,A,26/30,Summary,27/30,1.Some words:,bee,butterfly,mess,shame,several,pour,waste,destroy,pollute,goodness,2.Some phrases:,see sb.doing sth.pourinto.,3.Some sentences:,There aredoing,We learn:,28/30,1.Express exclamation:,What a mess!What a shame!Oh,my goodness!,2.Know the differences between Simple Past,and Present perfect.,It was a beautiful place.,Everything has changed.,We can:,29/30,Thank you!,30/30,






