Unit13SectionA改介绍.ppt

第1课时前测 1．在……中起作用；扮演角色；参与…… play a ________ ________ 2．打扫干净；整理好 clean ________ 3．削减；砍倒；删节 cut ________ 4．有影响，起作用 make a __________ 5. 通向；导致 lead ________ 6．切除；切断；中断 cut ________ 7. 装满，挤满be full ______________ small things ______ add up and become big things that _________ improve the environment. Let’s take action now! electricity by turning off the lights when you leave a room. You ______ also use reusable bags instead of plastic bags. I think it’s a great idea that you now ______ pay for plastic bags in some stores. And instead of driving to school or work, you __________ ride your bike or walk. If it’s far, you __________ take the bus. All these could have to can/should can/could 关掉 adj.可重复使用的 付费;付出代价 could would/can 采取行动 * Section A 1a-2d The earth is polluted. air pollution The factories that burn coal pollute the air with a lot of black smoke. n. 煤炭 Factories put waste into the river. water pollution noise pollution There are more cars on the road. land pollution mobile phone pollution litter v. 乱扔 n. 垃圾 rubbish waste 垃圾，废弃物 People should throw away litter in the bin. n. 垃圾箱 1a Here are some words related to different kinds of pollution. Write them in the box below. Then add more words. be ...related to... 与...有关 noise pollution ____________ ____________ ____________ ____________ air pollution ___________ ___________ ___________ ___________ water pollution ____________ ____________ ____________ ____________ loud music planes mobile phones factories cars smoking ships factories littering rubbish building houses loud music cars rubbish planes littering ships factories smoking building houses mobile phones factories cars building houses part/role in up down difference to off of 1b Listen and complete the sentences. 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 was the problem? really dirty ru