優(yōu)質(zhì)課課件重要

1、Unit 2 Saving the Earth Topic 1Pollution causes too many problems. Section A獲嘉縣第一初級(jí)中學(xué) 吳 倩Guessing gamesPeople use chemicals too much in their fields,so this kind of pollution causes unhealthy food.soil pollutionchemical n. 化學(xué)品 adj. 化學(xué)的chemical factories 化工廠(chǎng)People pour waste water into rivers and lak

2、es, so this kind of pollutionis almost everywhere in China.waste adj. 廢棄的；丟棄的； 無(wú)用的water pollutionThis kind of pollution makes people sick.It causes breathing problems and even cancer. air pollutionbreathe v. 呼吸In some cities,this kind of pollution is caused by many cars. Thegovernment has done somet

3、hing useful to stop it.noise pollutionThis kind of pollution influencesour environment. litterInfluence v./n. 影響have/has an influence on sb./sth.對(duì)某人/某物有影響eg:All kinds of pollution have bad influences on us.This kind of pollution is harmful to birds.light pollution harmful adj. 有害的 be harmful to sb./

4、sth 對(duì)有害= do harm to sb./sth.eg: Sweet food is harmful to/ does harm to childrens teeth. 2. Work aloneIt is generally believed that pollution does great harm to animals. Listen and number the pictures.643215（錄音）There are some bees and butterflies dancing .There be + sth./sb. doing sth. “有某人或某物正在做”如：L

5、ook,there is a rabbit running.There are some fishes swimming in the stream.Look, there are several chemical factories pouring waste water into the stream.(Kangkang,Jane,Maria and Michael are planning a picnic.)Listen to 1a, answer the questions.1.Where are they going to have a picnic? The West Hill2

6、.What has happened there? Everything has changed.Watch the flash about 1a ,and find out what Kangkang said about the West Hill in the past and at present.What did Kangkang say about the West Hill in the past?Its a beautiful place with lots of flowers and grass.The air is fresh and the water is clean

7、,and you will see bees and butterflies dancing.Kangkang said,“ It is a beautiful place with lots of flowers and grass.”Kangkang said that it was a beatiful place with lots of flowers and grass.直接引語(yǔ)變?yōu)殚g接引語(yǔ)：直接引語(yǔ)為陳述句時(shí)，用連詞that引導(dǎo)，that在口語(yǔ)中常省略。同時(shí)要注意當(dāng)主句是一般過(guò)去時(shí)時(shí)，從句的時(shí)態(tài)也要相應(yīng)的變?yōu)檫^(guò)去的某種時(shí)態(tài)。還要注意人稱(chēng)的變化呦！例如：PractiseShe sa

8、id,“I dont like computers.”She said that she didnt like computers. He said ,“ I have been to Canada.”He said that he had been to Canada.Kangkang said,“The air is fresh and the wateris clean,and you will see bees and butterfliesdancing.”Kangkang said (that) the air was fresh and the water was clean,a

9、nd they would see bees and butterflies dancing.What did Kangkang say about the West Hill at present? The flowers and grass have gone! The water is so dirty. It smells terrible. Kangkang said,“The flowers and grass have gone!”Kangkang said that the flowers and grass had gone. Kangkang said,“The water is so dirty.” Kangkang said that the water was