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1、Unit 2 Saving the Earth Topic 1Pollution causes too many problems.Pollution causes too many problems.Section ASection A（录音）（录音）（录音）（录音）.Teaching aims and demands 教学目标教学目标3.Learn direct speech and indirect speech:(1)Kangkang said that it was a beautiful place with lots of flowers and grass.(2)Kangkan
2、g said that the flowers and grass had gone.4.Learn and talk about different kinds of pollution:(1)Air pollution makes people sick.(2)Light pollution is harmful to eyes.(3)Litter influences our environment.A:Where have you been/traveled?B:I have been/traveled to.Kangkang and his friends are planning
3、a picnic.Can you guess where they will go?They will go to They will go to a beautiful place with.Would you like to have a picnic in such places?Do you know this place?Its Lop Nur(罗布泊罗布泊).Do you know this place?Its Lop Nur(罗布泊罗布泊).It used to be a beautiful place with过去是过去是Pollution really causes too
4、many problems.too many+可数名词复数可数名词复数 too much+不可数名词不可数名词 much too+adj./adv.We must protect our earth now.What can you see in the picture?Can you see bees and butterflies dancing?Is the West Hill a beautiful place now?What has happened here?The flowers and grass have gone!There are several chemical fa
5、ctoriespouring waste water into the stream.Is the West Hill a beautiful place now?There are several chemical factories pouring waste water into the stream.several=a fewThere be+sth./sb.+doing sth.There are many students reading books in the classroom.In the past,the West Hill was a beautiful place w
6、ith flowers and grass.We could see bees and butterflies dancing.The air was fresh,the water was very clean and we could see fish swimming.But now,all the flowers,grass,bees,butterflies and fish have gone.The water is so dirty and it smells terrible.Why?Because there are several chemical factories po
7、uring waste water into the stream.So we should protect the environment.Listen to Part 1a,answer the questions.What did Kangkang say about the West Hill in the past?Kangkang said that it was a beautiful place with flowers and grass.What did Kangkang say about the West Hill at present?Kangkang said th
8、at the flowersand grass had gone.Kangkang:Its a beautiful place with lots of flowers and grass.Kangkang:The flowers and grass have gone!影片影片影片影片直接引语变成间接引语，直接引语变成间接引语，句子结构句子结构的变化的变化 He said,“I have been to the Great Wall.”He said to us that he had been to the Great Wall.He said,“Ill give you an exami
9、nation next Monday.”He told us that he would give us an examination the next Monday.陈述句陈述句用连词用连词thatthat引导，引导，thatthat在口语中常省略。主句的谓语在口语中常省略。主句的谓语动词可直接用引语中的动词可直接用引语中的said,said,也可用也可用toldtold来代替，注来代替，注意意:可以说可以说said that,said to sb.that,told sb.said that,said to sb.that,told sb.that.that.不可直接说不可直接说told
10、thattold that。解题步骤解题步骤:陈述句陈述句:“I dont like computers,”Sarah said to her friends.Sarah said to her friends that I dont likecomputers.saiddidntsheSarah said to her friends that she didnt like computers.Sarah1bWork aloneIn the pastAt presentReasonKangkang said thatit was a beautifulplace with lots offl
11、owers and grass.Kangkang saidthat the flowersand grass hadgone.Maria said.In the pastAt presentReasonKangkang said thatit was a beautifulplace with lots offlowers and grass.Kangkang said that the air was fresh and the water was clean,and that they would see bees and butterflies dancing.Kangkang said
12、that the flowersand grass hadgone.Kangkang said that the water was so dirty.Kang said that it smelled terrible.Maria said that there were several chemical factories pouring waste water into the stream.We know,without plants and animals,the West Hill isnt beautiful.So plants and animals are important
13、.Lets look at the lovely animals in the pictures in 2.Listen to the tape and write down the numbers of the correct pictures.2.Work aloneIt is generally believed that pollution does great harm to animals.Listen and number the pictures.6 64 43 32 21 15 5（录音）（录音）（录音）（录音）a.air pollution b.soil pollution
14、 c.water pollution d.light pollution e.noise pollution f.litter3aWork alone1234563b Complete the following sentences with the word and phrases in 3a.3b Complete the following sentences with the word and phrases in 3a.soil pollution water pollution Air pollution noise pollution Light pollution Litter
15、根据句意及首字母完成下列各句。根据句意及首字母完成下列各句。1.I have b_ to the West Hill before.1.I have b_ to the West Hill before.2.All the flowers,grass and fish have 2.All the flowers,grass and fish have g_.g_.3.There are s_ chemical factories 3.There are s_ chemical factories pouring waste water into the river.pouring waste
16、 water into the river.4.We call a small narrow river a s_.4.We call a small narrow river a s_.5.Using chemicals too much in the fields may 5.Using chemicals too much in the fields may cause s_ pollution.cause s_ pollution.een oneeveraltream oilWhat kind of pollution can you find What kind of polluti
17、on can you find around us?around us?What problems does the pollution What problems does the pollution cause?cause?Please talk about the following questions.Smoking isnt cool,it is harmful.It is harmful to our health.Air pollution may cause breathing problems.Talk about the following pictures with yo
18、ur partner.We shouldnt litter about.It influences the look of our city.Useful expressions Oh,my goodness!Oh,my goodness!The flowers and grass have gone!The flowers and grass have gone!There are several chemical factories There are several chemical factories pouring waste water into the stream.pouring waste water into the stream.Light pollution is harmful to eyes.Light pollution is harmful to eyes.Now,its time for me to Now,its time for me to relaxrelax!Thank you Thank you and and Goodbye!Goodbye!