八年级英语Enviroment Reading课件.ppt

1、Unit 7 EnviromentPre-reading questions:1.What part of the nature do you think is beautiful?the seathe lakea streamthe forest2.Now human beings are doing something bad to the nature.How many kinds of pollution do you know?air pollutionwater pollutionland pollutionnoise pollutionA What do you know abo

2、utBrain storming:Trees are very important in our daily life.What can we get from trees?use-eat-drink-wear-A What do you know aboutBrain storming:Trees are very important in our daily life.What can we get from trees?use-eat-drink-wear-pencils,chopsticks,tables,chairs,paper fruit,nutstea(leaves),coffe

3、e(beans)flowers,shoes(rubber)Before you read the interview on the next page,try Before you read the interview on the next page,try this quiz about trees.this quiz about trees.A Ba mice i 75 yearsb pine trees ii 14 yearsc cats iii 25 yearsd dolphins iv 1,200 yearse people v 2 years1 How long do they

4、live?Match the items on the left 1 How long do they live?Match the items on the left with the ages on the right.with the ages on the right.2 Pollution means the process ofmaking things dirty and unhealthy.Which type of pollution do trees help fight?A air pollutionA air pollutionB noise pollutionB no

5、ise pollutionC water pollutionC water pollutionD all of the above D all of the above Air pollution:Air pollution:The leaves of trees remove The leaves of trees remove dangerous chemicals and dangerous chemicals and dirt from the air and produce dirt from the air and produce oxygen.oxygen.Water pollu

6、tion:Water pollution:Trees around reservoirs help Trees around reservoirs help keep the water clean by keep the water clean by removing dust and dirt from removing dust and dirt from the air,and their roots the air,and their roots prevent the soil from being prevent the soil from being washed into t

7、he water.washed into the water.Noise pollution:Noise pollution:Trees reduce noise from Trees reduce noise from vehicles.vehicles.3 Which of the following come from trees?a applesa apples b beans b beans c cotton c cotton d oil d oil e tea e tea f rubber f rubber4 The best-known flowers in Shenzhen a

8、re azaleas.These sweet-smelling flowers are known as the flowers of Shenzhen city.Which picture shows azaleas?banana treespalm treesazaleasB look and thinkBefore you read the interview,look at the title,the introduction and the pictures.Then say whether the following statements are T or F.1 The poll

9、ution fighters are probably 1 The pollution fighters are probably scientists.scientists.2 Few useful products come from trees.2 Few useful products come from trees.3 Trees give out harmful gases.3 Trees give out harmful gases.4 Trees can pass information to one 4 Trees can pass information to one an

10、other.another.FFFT A 1project2interviewing3breathing4natural5warn6a chemical7cut down C2 Find the words in Column A in the interview and C2 Find the words in Column A in the interview and match them with the meanings in Column B.match them with the meanings in Column B.B B A made by nature,not by ma

11、nA made by nature,not by manB talking to someone and asking them B talking to someone and asking them questionsquestionsC a careful study of a subject by school C a careful study of a subject by school or studentsor studentsD taking in airD taking in airE something produced by or used in E something

12、 produced by or used in chemistrychemistryF cut something to make it fall downF cut something to make it fall downG say that something bad or dangerous G say that something bad or dangerous may happenmay happen1 1 against:against:disagreeing;opposingdisagreeing;opposing2 be interested in:2 be intere

13、sted in:take an interest intake an interest in3 breathe:3 breathe:take in airtake in air4 burn:4 burn:damage sth.by firedamage sth.by fire5 chemical:5 chemical:something produced by or something produced by or used in chemistry used in chemistry6 collect:6 collect:bring things togetherbring things t

14、ogether7 communicate with:7 communicate with:give and receive give and receive information,messages,signals,etc.information,messages,signals,etc.8 cool:8 cool:make sth.become coolmake sth.become cool9 cut down:9 cut down:cut sth.to make it fall cut sth.to make it fall downdown10 destroy:10 destroy:d

15、amage sth.so badly that it damage sth.so badly that it no longer exists or works no longer exists or works11 in danger:11 in danger:in a dangerous situationin a dangerous situation12 join:12 join:connect things togetherconnect things together13 natural:existing in nature13 natural:existing in nature

16、14 project:14 project:p piece of work that involves p piece of work that involves a careful study of a subject a careful study of a subject15 underground:15 underground:under the surface under the surface of the ground of the ground16 warn:16 warn:say that something bad say that something bad or dan

17、gerous may happen or dangerous may happenFill in the blanks with correct words.1.1.He _ the letter after reading it.He _ the letter after reading it.2.2.Some people like to _ stamps from Some people like to _ stamps from different countries.different countries.3.3.I put some ice into the glass to _

18、the I put some ice into the glass to _ the water inside.water inside.4.4.I must _you not to go out.There is I must _you not to go out.There is a storm coming.a storm coming.5.5.This country has few _ resources.This country has few _ resources.6.6.The farmer used a _ to kill the The farmer used a _ t

19、o kill the insects in their fields.insects in their fields.burntcollectcoolwarnnaturalchemicalFill in the blanks with correct words.7.These days we can _with 7.These days we can _with pen-friends by e-mails.pen-friends by e-mails.8.The TV progarmme _ a 8.The TV progarmme _ a famous film director abo

20、ut his latest famous film director about his latest film.film.9.The forest was badly _ in the 9.The forest was badly _ in the big fire.big fire.10.There is a small bookshop at the 10.There is a small bookshop at the _ of the street._ of the street.11.The new road will _ the village 11.The new road w

21、ill _ the village and the city.and the city.12.It took me 2 weeks to finish that 12.It took me 2 weeks to finish that science _.science _.communicateintervieweddestroyedendjoinproject1 1对对感兴趣感兴趣2 2例如例如3 3呼吸新鲜空气呼吸新鲜空气4 4因因而感谢而感谢5 5天然空调天然空调6 6自我保护自我保护7 7互相互相,彼此彼此8互相交流互相交流9 9处于危险之中处于危险之中1010最好的抗污染的战士最好

22、的抗污染的战士1 be interested in1 be interested in2 for example2 for example3 breathe fresh air3 breathe fresh air4 thank4 thankforfor5 natural air conditioners5 natural air conditioners6 protect oneself6 protect oneself7 each other7 each other8 communicate with one 8 communicate with one anotheranother9 b

23、e in danger9 be in danger10 the best fighters 10 the best fighters against pollutionagainst pollutionD Find the factsJudy took some notes from her interview with Doctor Ray.However,she made four mistakes.Read through the interview and correct Judys mistakes.Trees:Trees:1 live much longer than people

24、;1 live much longer than people;2 produce wood,rubber,paper,etc.2 produce wood,rubber,paper,etc.3 heat the air;3 heat the air;4 cannot clean the air;4 cannot clean the air;5 are like air conditioners;5 are like air conditioners;6 cannot protect themselves against insects;6 cannot protect themselves

25、against insects;7 can share food and water with one another;7 can share food and water with one another;8 are in danger,mainly from insects.8 are in danger,mainly from insects.coolcancanpeople/human beingsRita is asking May questions about trees.May is giving Yes or No answers.Read Ritas questions a

26、nd complete Mays answers with one or more words.1 We get some useful things from trees.1 We get some useful things from trees.Is that right?Is that right?Yes.Yes.Two examples are Two examples are wood and rubber.wood and rubber.2 2Trees do two main things to the air.Is Trees do two main things to th

27、e air.Is 3 3 that true?that true?Yes.Yes.They They cool it and clean it.cool it and clean it.3 One tree has the power of 15 air 3 One tree has the power of 15 air condidtioners.Is that right?condidtioners.Is that right?No.No.One tree has the power of One tree has the power of five air conditioners.f

28、ive air conditioners.4 Do scientists know a lot about trees?4 Do scientists know a lot about trees?No.No.They are They are only now beginning only now beginning to understand them.to understand them.5 Can trees communicate with one another?5 Can trees communicate with one another?Yes.Yes.For example

29、,when insects For example,when insects attack a attack a tree,tree,it can warn its neighbours.it can warn its neighbours.6 And can they protect themselves 6 And can they protect themselves from insects?from insects?Yes.Yes.They can produce They can produce a chemical to a chemical to make their leav

30、es taste bad.make their leaves taste bad.7 Can trees help one another?7 Can trees help one another?Yes.Yes.For example,they can For example,they can join their join their roots together underground and pass roots together underground and pass each other food and water .each other food and water .8 E

31、very year,there are fewer and fewer 8 Every year,there are fewer and fewer trees in the world.Is that true?trees in the world.Is that true?Yes.Yes.People People cut down and burn a lot of cut down and burn a lot of trees every year.trees every year.P1-2:P1-2:Trees are the biggest Trees are the bigge

32、st and oldest living and oldest living things on Earth.things on Earth.P3-6:P3-6:Trees provide many things Trees provide many things such as wood,rubber and such as wood,rubber and paper.They cool and paper.They cool and clean the air.They are clean the air.They are natural air conditioners.natural

33、air conditioners.P7-8:P7-8:Scientists are only Scientists are only beginning to understand beginning to understand trees.Trees can warn trees.Trees can warn each other of insect each other of insect attacks and pass food attacks and pass food and water to one another and water to one another through

34、 their roots.But through their roots.But many things about them many things about them are still a mystery.are still a mystery.P9-10:P9-10:Trees are in danger Trees are in danger because we destroy a because we destroy a lot of them every lot of them every year.We are year.We are destroying our best destroying our best pollution fighters.pollution fighters.