广州初三Unit3Theenvironment讲解+语法+练习

1、unit 3the environment .学习目标1. unit重点单词、短语2. 目的状语从句的用法 .重点、难点分析1. our world is in danger. 我们的世界处于危急中；in danger 在危急中，濒危this kind of bird is in danger. we need to do something to protect them.拓展out of danger 脱离危急he is out of danger now.2. the atmosphere around the earth is necessary for all living thin

2、gs.sth. is necessary for sb/ sth对于某人而言，干什么是必需的；water is necessary for fish.拓展：it s necessary for sb. to do对于某人而言，干什么是必需的its necessary for us to go to school on time. living things生物， living adj活的，活着的they are like living textbooks for young people.辨析：living和 alive两者都为形容词，living活的，活着的，即可作表语又可作定语，既可以用于

3、指人也可以用于指物；而alive活的 不用于名词前，只做表语；they are living and as happy as ever.他们都仍活着，并且跟以前一样快乐；luckily, the boy is still alive.幸运的是，那个男孩仍活着；3. as a result of the greenhouse effect, the earths temperature is increasing.as a result of 由于，作为的结果，与because of 同义；he died as a result of his injuries. 他由于受伤而死亡；辨析： as

4、a result of 和 as a resultas a result of 介词短语由于，后跟名词、代词等as a result副词短语结果，后跟事情的结果i was late as a result of the heavy rain.he got up late today. as a result, he missed the early bus.increase增长、增多增加此处是不及物动词the population of the world is increasing fast.拓展： increaseby增长了， by 后接百分数、倍数或增长的幅度;increase to 增

5、长到，to 后接详细的数字they increase the price by 20 .the population of our country has increased to 1.3 billion.4. in order to protect the environment ,we need to take proper action. properadj. 正确的；恰当的i didn thtink it was proper to ask for the ladys telephone number so soon.我认为这么快就要那位女士的电话号码不太合适；同根词properly

6、adj. 正确地，合适地she can read german but has trouble speaking it properly.4. every year, we destroy nature by cutting down huge areas of foreasts. naturen. 自然界，大自然we like camping, it makes us feel closer to nature.our purpose is not only to conquer nature but also to remake nature. 我们的目的不仅要战胜自然，而且仍要改造自然；

7、同根词naturaladj.自然的，自然的dont worry .it s a natural phenomenon.别担忧，这是自然现象；we must protect the natural environment.6. if we just learn to live in new and different ways, we can make a difference.make a difference 有作用，有影响，与众不同the easiest way to make a difference is not to throw rubbish away. it doesnt mak

8、e a difference to you, does it.7. i am concerned too.be concerned 关怀，担忧，挂念， concerned为 ad,通常与 for 和 about 连用，与be worried about 同义；dont be concerned about/for me.8. this causes sea level to rise, and in the future may cause cities to disappear.辨析： in future 和 in the futurein future: 相当于 from now on今后

9、 ,从今以后"i hope they'll be more cautious in future, " he observed. keep your opinions to yourself in future.in the future: 在将来the boy wants to become a philosopher in the future.we learn from the past, experience the present and hope for success in the future.我们从过去中学习，体验现在，展望将来的胜利；ex.1一

10、依据句子的意思，用所给词的适当形式填空；1.it s clear that （nature）disaster is one of the reasons to the economic crisis. 2.in order to protect the water resources, we need take proper action.3. our environment is danger if we don t stop polluting it.4. cutting down trees also destroy the homes of animals.5.i dont doubt

11、 that the police acted proper6.the food industry is playing more attention to young consume. 7.it causes the surface of the soil to be easy destroyed by rain.8. we can help protect the environment if we change our bad habit.9. as a result of the earthquake, many people leave homeless.10the governmen

12、t has decided increase salaries for all civil servants.语法 like & same & different语法梳理a、“the same ”and“ different ”.假如两个或两个以上的事物是完全相同，英语中可以用the same 表达，假如不相同，我们可以用different表达； the same 和 different 可以做形容词做表语或者做定语修饰名词代词等 , the same 后面常接单数名词而different后常接复数名词 .we are in the same school,but we are

13、 in different classes.b、“ like ”，“the same as”和“ different from”说明事物或人物之间存在某种程度的相像性，我们常用“like ”或“ be like；look like “ ,像；看起来像” ；说明事物或人物完全相同，我们常用：“the same as”；既不相像也不相同，我们常用：“ be different from ”； he ran out an arrow.（像）it s a special music, sounds great（.像）mr jiang s computer and my computer are in

14、size, his is big and mine is small.（不同）an mp3 player a cd player, an mp3 player doesnt use discs.（不同于）my bike as yours.相同）this suit looks c、“the sameas”that one.相同）我们可以把名词或短语放在the same之后，构成the same+n./phrase+as句型； my father works in the same company as her uncle.d. 总结句子结构：1. sth. + v. + the same这两首歌

15、听起来一样； 2. sth. + v. +different这三个教室大小不一样； 3. sb. + v. + like + sth.坐在那里的老人像块石头；4. sth.+v.+the same as +sth.我衣服的颜色和你的相同；5.sth. + v. + different from + sth.他们的房间和我们的不同；6. the same + n .+ as她和我犯了同一个错误；ex.21. peter is the same age paul.2. we should be different them and use both sides of paper.3. the ca

16、t in picture a is small than the one in picture b.4. he is as tall his father now.5. i can speak english as good as french.单元测试一 .单项挑选1. we must do something to stop people from .a. to throw litter aboutb. to throw litter intoc. throwing litter aboutd. throwing litter into2. the students in zhejiang

17、 university are from foreign countries.a. seven hundreds ofb.seven hundredsc.seven hundred ofd.hunderdsof3. i have arranged for a car to at the station.a. pick them upb.pick up themc.pick them ond.pickon them4. there were many horrible smells i can t stay here more than one minute.a. such; thatb.too

18、;forc.too; sod.so; that 5.when i ,i found myself a terrible place.a.wake up; inb.woke up; inc.fell asleep; atd.fall asleep; at 6.bob hasnt changed. he exactly he did at school.a.looks; the same asb.look; the same as c.looks; the same to d.has looked; the same as7. he his watch his pocket, and wanted

19、 to know the time.a. takesout ofb.tookout ofc.takesout withd.tookout with 8.the seeds must be covered with earth.a.a layer ofb.a lay ofc.a layer withd.a lay with 9.this book believable, interesting characters.a. is full withb.is filled ofc.is full ofd.is full10. i feel lost and in a strange town .a.

20、 alone; lonelyb.alone; alone c.lonely; lonelyd.lonely; alone二 语法挑选how do peoplepass on messages. when you write aletter or makea telephone call, your words take a message. people communicate with words. do you think you can communicate with words. a smile26your face shows you are happy and friendly.

21、 tears in your eyes tell27that you are sad. when you28your hand in class, the teacher knows you want to say something29ask questions. you shake your head, and people know you are saying no. you nod and people know you are saying yes.other things can also give some information.30, a sign at thebus st

22、op helps you to know which bus31. a sign on the wall of your school helps you to find the library. signson doors tell you how to go in or out.32you ever noticed that there are a lot ofsigns around you and that you receive messages from33all the time. people can communicate in many other ways. an art

23、ist can use his drawings to tell about beautiful mountains,about the blue sea and many other things. books34to tell you about all wonderful things in the world and also about people and their ideas.books, magazines, tv and radio and films allhelp us to communicate with other people. they all help us

24、 to know35is going on in the world.11. a. inb. onc. atd. over12. a. othersb. the othersc. otherd. the other13. a. put onb. put outc. put upd. put down14. a. whenb. orc. butd. and15. a. for exampleb. such asc. howeverd. even though16. a. to getb. to goc. to haved. to take17. a. dob. didc. hadd. have1

25、8. a. itb. itselfc. themd. themselves19. a. writeb. wrotec. is writtend. are written20.a. what完型填空；b. whichc. thatd. wholast week i read a report on a charity show. the aim of the show was to 1 money forthepoorchildrenwhowereoutofschool 2 theirfamiliesdidn t have 3 money for their children.many famo

26、us pop stars 4 the charity show, such as jackie chan and lin junjie. the stars didn't 5 any pay 酬劳 . they did that for free. there were a lot of performances, including singing and dancing. the audience were 6 excited that they clapped their hands鼓掌 from time to time. of course, the show was 7 a

27、ll the people followed the 8 examples. they gave their money to the charity show.both the ticket money and the donated money would be sent to the poor areas and some of the poor childrenwould go back to school.now many charity shows 9 in our country, not only to support education in poor areas but a

28、lso to help people in trouble. i hope the whole world will become more and more beautiful 10 people's help. 21. a. payb. raisec. gived. spend 22. a. butb. soc. becaused. and23. a. too manyb. enoughc. much tood. many 24. a. joinb. take part inc. took part ind. joined 25. a. ask forb. hand outc. w

29、orry aboutd. cost 26. a. veryb. suchc. sod. quite 27. a. importantb. successfulc. tiringd. boring 28. a. starsb. starsc. starsd. audiences 29. a. are heldb. holdc. are holdingd. are giving 30. a. underb. withc. withoutd. by四阅读懂得；a1970 was "world conservation year". the un wanted everyone t

30、o know that the world was in danger - they hoped that governments would act quickly in order to conserve nature.here is one example of the problem. at one time there were 1,300 different plants, trees and flowers in holland, but now only remain 860. the others have been destroyed by modern man and h

31、is technology. we are changing the earth, the air and the water, and everythingthat grows and lives here. we can't live withoutthese things. if itcontinues like this, we shall destroy ourselves.what will happen in the future. perhaps it is more important to ask "what must we do now." t

32、he people who will be living in the world of tomorrow are the young of today. a lotof them know that conservation is necessary. many are helping to save our world. they plant trees, build bridges across rivers in forests, and so on. in a small town in the united states a large group of girls cleaned

33、 the banks of 11 kilometers of their river. young people may hear about conservation through a record called no one's going to change our world. it was made by the beatles and other singers. the money from it will help to conserve wild animals.31. the un set up "world conservation year"

34、; because .a. the world was in danger of warb. the government had done something to protect the worldc. many things were destroyed by the technologyd. man and his technology destroyed the earth badly32. kinds of plants have disappeared in holland in the past few years. a .860b. 440c. 1,300d. 2,16033

35、. "no one's going to change our world" is .a. a recordb. a songc. a bookd. a cd34. it is impossible to save our world if we .a. plant treesb. clean the banks of riversc. picking rubbishd. listen to the record35. the passage mainly tells us .a. the people who will be living in the world

36、 of tomorrow are the young of todayb. what will happen in the world in the futurec. conservation of nature is necessaryd. everyone has known the importance of conservation of nature since 1970bgasoline 汽油 prices are getting higher and higher. the prices make it hard for drivers to afford the fuel.on

37、e group held a special event to display（展现）new kinds of cars .the new cars are different and they can run on many different kinds of fuels.some of these cars are called hybrids 混合动力 . they can run on different kindsof fuels. one kind of them runs on a special fuel cell which is filled with a gas cal

38、led hydrogen.the fuel cell cars are also better in another way. they give off no emissions （排放物） . theyare very clean, and don t give off bad fumes when they are running.one man who makes fuel cell cars is excited about the hydrogen fuel cell technology. he says we will never run out of the sources

39、of the fuel ,but we may run out of the oil.once we use oil up, it will take millions of years for more oil to form. since gasoline is made fromoil, that could be a problem for companies that make traditional cars , and for drives .however, it won t be a problem for cars that run on fuel cells.buses

40、that run on hydrogen fuel cell power are being tested on the road. they could become a common form of transportation inthe near future36. from the first paragraph we know that a.cars are more expensive nowb. people are poorer now than beforec. drivers have to pay more to fill their cars with gasolin

41、e d.it s useless to have a car37. what does the underlined word“hydrogen” mean.a. 氢b. 磷c.钾d. 钙38. which of the following is not the advantage of the hydrogen fuel cell car.a. it s better to the environment to drive it.b. we will never use up the source of the fuel.c. it can avoid road accidents.d. i

42、t doesnt give off bad fumes when it runs. 39.what s the problem for traditional cars.e. oil will be used up.f. traditional cars will be forbidden to drive.g. it s hard to learn to drive.h. fuel cell cars have more advantages. 40.what s the main idea of the passage.i. traditional cars polluted the en

43、vironment badly.j. gasoline becomes more and more expensive.k. a special fuel cell is very useful.l. a new kind of cars will replace the traditional ones.ci can t remember when i started collecting lit（ter垃圾）. but it was when i got tired of seeing litter near my home and realized that no one else wa

44、s going to pick it up.i live close to a forest in ohio, america. i can walk there in three minutes. i used to love going there to play with my dog. but one day there was so much litter there that i became very unhappy. i decided to clean up the forest. i wanted to feel happy going there again.i made

45、 my first trip to clean the forest that afternoon. i took a big black rubbish bag with me. ten minutes after starting to pick up litter, my bag was full. it had cans, bottles, broken glass and newspapers in it.since that first trip three years ago, i ve gone to thse afoyreeastr ftoouprictikmuep litt

46、er.i m often there for three hours. it makes me feel great to do something for the environment.after each trip, i look at all the litter i ve found. if （an可y 回of 收it i的s r）ecy,cilakbeleep it. i can t understand why people ditrtoepr. lbut i will keep picking it up until they stop droppingit.i know i

47、can only do a small bit to help the earth, but i still think it is important. 41.when did the writer begin to collect litter.a when he was very young.b after his home moved to a new place.c when he realized no one else was going to pick it up.42.where does the writer live.a he lives in a forest. b h

48、e lives near a forest.c he lives in a place with much litter.43.the writer collects litter.a in order to make money b in order to get a prizec in order to make the place clean 44.where does the writer collect litter.a in the forest.b in the street.c in the park.45. from the passage we infer（推断）.a th

49、e writer will go on with collecting litter b the writer always collects a lot of litter c the writer thinks he does a great thingd"lifeis speeding up. everyone isgetting unwell."this may sound likesomething someone would say today. but in fact, an unknown person who lived in rome in ad 53

50、wrote it.we all love new inventions. they are exciting, amazing and can even change our lives.but have all these developments really improved the quality of our lives.picture this,： you're rushing to finish your homework on the computer. your mobile phone rings, a qq message from your friend app

51、ears on the screen, the noise from the television is getting louder and louder. suddenly the computer goes blank and you lose all your work. now you have to stay up all night to get it done. how happy do you feel.inventions have speededup our lives so much that they often leave up feeling stressed a

52、nd tired. whydo youthinkpeople who livefar away fromnoisy cities,who have no telephones, no car, not even any electricity often seem to be happier. perhaps because they livea simpler live. one familyin the uk went "back in time"to see what lifewas like without all the inventions we have to

53、day.the grandparents, with their daughter, and grandsons benjamin, 10 and thomas, 7, spent nine weeks in a 1940s house. they had no washing machine, microwave, computer or mobile phones. the grandmother, lyn, said, "the more things you have, the more difficultlife becomes." the boys said t

54、hey fought less. probably, they said, because there was less to fight over, such as their computer. benjamin also noticed that his grandmother had changed from being a "trendy, beer-drinking granny, to one who cooked things"46. the writer uses the quote引用 at the beginning of the story to .a. tell us a truth about our live.b. tell us what life was like long time ago.c. poi