1、Unit 13 Section A 1 (1a-2d) I. Presentation Show the picture of the earth and tell students the earth is polluted now. For example: (1) The factories that burn coal pollute the air with a lot of black smoke. (2) Factories put waste into the river. (3) People sh
2、ould throw away litter in the bin. (4)There are more cars on the roadII. Learning Here 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
3、 factories smoking building houses mobile phones noise pollution ____________ ___________ _____________ ____________ air pollution ____________ ___________ _____________ ____________ water pollution____________ ___________ ___
4、__________ ____________ Keys : noise pollution：loud music planes mobile phones building houses air pollution：factories smoking cars building houses water pollution：ships rubbish littering factories III.Listening 1b Listen and complet
5、e 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. What caused the problem? People are throwing _______ into the river. Factories are putt
6、ing ______ 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.Keys: really dirty rubbish fish litter waste government clo
7、se down clean up IV. Practice 1. Role-play the conversation in 1c. 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 throwing litter into the river. Tony: Everyone in this
8、town should play a part in cleaning it up! 2. Make conversations using the pollution in 1a. A: The river has always been the nicest river in this town. B: Yes,
