九年级英语unit13,SectionA1a-1c课件.ppt

Section A1a 1cserious pollutionWe are harming our planet in so many ways.伤害伤害air pollutionnoise pollutionwater pollutionair pollution!The weather is always foggy.We cant see the blue sky.We cant breathe the fresh air.Do you know why?Factories pour dangerous gases into the air.Cars also pour dangerous gases into the air.tail gasDad,whats the Dad,whats the acid rainacid rain?Natural resources are disappearing at a dangerous rate.以危险的速度以危险的速度desertextinct灭绝的灭绝的Help save the earth We must think of better way to treat our planet in future.What do you usually do?Are you a friend of the Earth?Take this quiz.STARTYou drink a can of cola.What do you do?I throw away cans.I recycle cans.You throw away the cans.Thats bad for the Earth.You recycle the cans.Thats good for the Earth.There are a lot of old newspapers at your home.What do you do?I throw the old newspapers away.I recycle the old newspapers.You throw old newspapers away.You waste paper.Thats bad for the Earth.You recycle old newspapers.You save paper.Thats good for the Earth.You go shopping.What do you do?I use a lot of new plastic bags.I use my own bag.You use a lot of new plastic bags.Thats bad for the Earth.You use your own bag.Thats good for the Earth.When you write on a piece of paper,what do you do?I write on one side only.I write on both sides.You use paper on one side only.Thats bad for the Earth.You use paper on both sides.Thats good for the Earth.close down the factories;help to clean up the river;take the bus or subway;ride a bike;bring a bag to go shopping,throw rubbish in the bins;turn off the lights when you leave a room;use paper or reusable bags;recycle books and paper;turn off the shower when you wash your hair;dont use napkins;rethink,reuse,recycle.Here are some words related to different kinds of pollution.Write them in the box below.Then add more words.1aloud musiccarsrubbishplaneslitteringshipsfactoriessmokingbulding housesmobile phonesnoise pullotionair pollutionwater pollutionloud music,planes,building houses,mobile phones,factoriescars,factories,smoking,building housesrubbish,littering,ships,factoriesListen and complete the sentences.1bwhat was the problem?The river was _.Even the bottom of the river was full of _.There were no more _ for fishermen to catch.really dirtyrubbishfishwhat caused the problem?People are throwing _into the river.Factories are putting _ into the river.How should the problem be solved?We should write to the _ and ask them to _ the factories.Everyone should help to _the river.litterwastegovernmentclose downclean upSection A 1b Tony:Hey,Mark,maybe we could go swimming in the river later this afternoon.Mark:I dont think I want to go,Tony.Tony:Why not?Mark:I was there last weekend and the river was really dirty.Even the bottom of the river was full of rubbish,and there were no more fish for fishermen to catch.Tony:No way!It used to be so clean.In fact,it has always been the nicest river in this town.Mark:Not anymore.I think people are throwing litter into the river.Factories are also putting waste into the river.Tony:Thats terrible!We should write to the government.They should close down the factories.Mark:Good idea!But I think everyone in this town should help to clean up the river,too.Everyone should play a part,not just the government.close down（使）停业（使）停业;（使）停产（使）停产They will have to close down soon.Business is too bad.他们将不得不歇业他们将不得不歇业,生意太坏了生意太坏了.If none of them comes back,Mr.Wu will close down the factory!没有人上工没有人上工,吴老板就关厂吴老板就关厂!play a part 扮演一个角色，参与，装腔骗人扮演一个角色，参与，装腔骗人He would like to play a part in this historic process.他愿意在这一历史进程中扮演一个角色他愿意在这一历史进程中扮演一个角色.Mark:The river was dirty.Even the bottom of the river was full of rubbish.Tony:But it used to be so clean!Mark:Yes,but people are littering in the river.Tony:Everyone in this town should play a part in cleaning it up!Role-play the conversation.Then make your own conversations about the kinds of pollution in 1a.1c1.We should put up notice to stop from _（乱扔）（乱扔）.2.The teacher asked us to find a way to pick up the coins at the _（底部）（底部）of the bottle.3.There are no more fish for _（渔夫）（渔夫）to catch in the river.4.We should take the paper bags to go shopping instead of the _（塑料）（塑料）ones.Exerciseslitterbottomfishermenplastic