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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit 2 Saving the Earth,Topic 1,Pollution has caused too many problems,.,Section C,Speak out the names of the pollution.,air pollution,light pollution,litter,water pollution,soil pollution,noise pollution,noise pollution,Noise is a,sort,/kind of pollution.,There are,all sorts/kinds of,noises.,They make us,uncomfortable,and,unpleasant,.,n.,种类；,v.,把,分类,adj.,使人不舒服的,adj.,令人不快的,noises made by,Lets write down the things that can make noises.,piano,bus,cat,wind,Underline the,topic sentence,of the passage,in 1a.,Give a proper,title,to this passage.,Try to find out the topic sentence to understand the content of a paragraph.,Read 1a and complete the following tasks.,Task 1,Noise is also a kind of pollution and is harmful to humans health.,Noise Pollution,How does noise harm peoples health?,Task 2,a.People often _ _.,b.People often feel _ and,_.,c.People may become _ or _.,d.Your point:,_.,go deaf,uncomfortable,sick,unpleasant,deaf,3.Which phrase has the same meaning as“is,harmful to”?,4.Which sentence shows that many teenagers,hearing in America is not good?,5.Why is the hearing of many young Americans,not good?,Task 3,Answer the questions.,“do harm to”.,Many teenagers in America can hear no better than 65-year-old people do.,Because they always listen to loud pop music.,1.produce A.to hurt someone,2.deaf B.a type or a kind,3.print C.not be able to hear,4.harm D.to grow or make,something,5.sort E.to put words or,pictures onto paper,using a machine,Task 4,1b Read 1a and match the words with their meanings.,a.,Not all people,know noise is also a kind of,pollution.,_ _,know(s,)noise is a kind of,pollution _ _.,b.Many teenagers in America can hear,no,better than,65-year-old people do.,In America,many teenagers hearing is _,_ _ 65-year-old peoples.,Task 5,Change the following sentences into the ones that have the same meanings.,Not everyone,/some people,as well,as,weak as,WHY?,Because they always listen to loud pop music.,1a Read and understand.,People,who work and live in noisy conditions,often go deaf.,在嘈杂的环境中工作和生活的,人容易变聋。,Difficult sentences,定语从句,e.g.Beethoven was deaf.,go deaf,变聋,e.g.He _ _ because of the traffic accident.,went deaf,deaf adj.,聋的,many of the workers,who print newspapers,and books,lose their hearing.,很多,印刷报纸和书籍的,工人丧失听力。,Difficult sentences,定语从句,e.g.Look!The man is printing,something.,lose ones hearing,丧失听力,a printer,hearing n.,听力，听觉,print v.,印刷,2 Complete the following passage with the correct form of each word.,Noise is a kind of _(pollute).Cars and machines produce too much noise.It makes people feel _(comfortable)and _(pleasant).It also does great _(harm)to peoples _(hear).Noise is very _(harm)to humans _(healthy).,pollution,uncomfortable,unpleasant,harm,hearing,harmful,health,Has noise pollution caused you any problems?If yes,share your feelings with your classmates.,What about other kinds of pollution?,3 Choose one kind of pollution and discuss it in,groups.The following questions may help you.,1.What is pollution?,2.What makes the pollution?,3.What problems does it cause?,4.In what way is it harmful to peoples life?,5.What has been done to solve these problems?,4 Write a short report about a kind of pollution based on 2 and 3.The topic sentence of each paragraph is given below.,pollution is,pollution is harmful to peoples health,The government has tried many ways to solve the problem,One possible version:,Air pollution is becoming more and more serious in todays world.Some chemical factories produce terrible gas and make the air bad.Buses and cars also produce waste gas.In our daily life,burning gas,oil and coal also creates air pollution.The air pollution may cause a lot of problems.It is harmful to peoples health.It can cause breathing problems,sore eyes and even cancer.It can also harm the plants,and the farmers will get less harvest.Luckily,the government has tried many ways to solve the problem,such as making laws to prevent the factory from polluting the air.,Exercises,单项选择,()1.The little girl was born_,and she cant hear,anything.,Oh,Im sorry to hear that.,A.lazy B.blind,C.deaf D.lovely,()2.What happened?,There is a girl_ on the street.She couldnt find her,mother.,A.cry B.crying,C.to cry D.cries,()3.The _ boy tried to climb up the tree,but he failed.,A.5-year-old B.5-years-old,C.5 year old D.5 years old,C,B,A,Exercises,用所给单词的正确形式填空。,1.They are doing their homework carefully.Youd better not,_(disturb)them.,2.It is known that smoking does great _(harm)to us.,3.They had all _(sort)of juice to drink at the party last,night.,4.Our government has solved some _(environment),problems.,改为同义句。,1.The boy had hearing loss when he was born.,The boy _ _ _ when he was born.,2.Some students go to school on Saturdays.,_ _ students go to school on Saturdays.,disturb,harm,sorts,environmental,lost his hearing,Not all,summary,We learn:,1.Find out the topic sentence to understand the,content of a paragraph.,2,.,Write a passage according to the topic sentences.,We can:,
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