2018届人教版九年级英语下册课件：Unit 13 第一课时(section A 1a-2d).pptVIP

4. advantage n.优点；有利条件 【拓展】其反义词为： disadvantage,意为“缺点，不 利条件”。 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 factories smoking bulding houses mobile phones 1a noise pullotion air pollution water pollution noise pullotion water pollution air pollution cars, factories, smoking, building houses(burning, power plants, nuclear waste disposal) Loud music, planes, building houses, mobile phones (machines, crowds, vihicles) rubbish, littering, ships, factories (sewage, industrial waste, pesticides) Listen and complete the sentences. 1b what was the problem? The river was _________. even the bottom of the river was full of ________. there were no more _____ for fishmen to catch. really dirty rubbish fish no more 不再 常与not ... any more(或 anymore) 互换 【拓展】You can drink no more. = You can’t drink any more.你再也不能喝酒了。 what 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. litter waste government close down clean up throw sth.into 把某物扔进/ 投入 I’ll throw you into the river. 我要把你扔进河里去。 【拓展】put sth.into把某物放 入 turn sth.into把某物变成 help to do sth.帮助做某事 其中的不定式符号to可省略， 即用help do sth.亦可。 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. 1c play a part in (doing) sth.在 (做)某事方面发挥作用；在 某事中扮演角色；参与某事 Everyone should play a part in protecting our environment. 每个人都应该参与到保护环境中去