Section A (1a-2d)Unit 13 We’re trying to save the earth!学习目标 Key words & phrases: litter, bottom, fisherman, coal, ugly, advantage, cost, wooden, plastic, make a difference Key sentences: 1. The river was dirty. Even the bottom of the river was full of rubbish. 2. But it used to be so clean! 3. Yes, but people are throwing litter into the river.Read and learnWords and expressionsLead inThe earth is polluted.air pollutionThe factories that burn coal pollute the air with a lot of black smoke. water pollutionFactories put waste into the river.litter v. 乱扔 n. 垃圾rubbish waste 垃圾 废弃物mobile phone pollutionnoise pollutionThere are more cars on the road.Presentation1aHere are some words related to different kinds of pollution. Write them in the box below. Then add more words.loud music cars rubbish planes littering ships factories smoking building houses mobile phonesnoise pollution ________________________________________________ air pollution ____________________________________________ water pollution ________________________________________________loud musicplanesmobile phonesfactoriescarssmokingshipsfactorieslitteringrubbishbuilding housesbuilding houses1b Listen and complete the sentences.What was the problem?The river was _____________. Even the bottom ( 底部 ) of the river was full of _________. There were no more ______ for fishermen ( 渔民 ) 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 up1cThe river was dirty. Even the bottom o...
