新沪教版英语七上unit3theEarth精讲与专练习

1、5.The Earth provides us with air, water and food.地球为我们提供了空气、水少食物。Unit3 the Earth.要点短语：1.be covered by 由.覆盖14 .It is +adj.for sb to tect the Earth 保护地球对某人来说做某事很3.many differe nt pla nts15 .let sb do sth 让某人做某事许多不同的植物16 .one quarter 四分之一，一刻钟4. somesome一些一些 17 .ask sb to do sth 让某人做某事5. on Eart

2、h 在地球上18 .catch fish 抓鱼6.on the land 在陆地上19 .fewer and fewer 越来越少7. in the sky 在空中20 .each year 每年& under the water 在水下面21 .throw away 扔掉9. provide sb with sth=provide sth for sb22 .n eed sth to do sth 需要某物来做某事给某人提供某物23 .keep sb alive 保持某人存活10.make energy 制造能源24 .find out 查清楚,弄明白11.put in to把.放进

3、25 .a long time ago = long , long ago12.under the ground 在地下很久以前13.stop doing sth 停止做某事26 .in the end 最后，终于二.要点解释：1. Read a poster about the Earth .阅读有关地球的宣传海报。Earth n.意为地球”，其前面需要定冠词the。eg：The moon goes round the Earth.还有陆地，地面；泥，土”的意思，此时不需要大写。eg： The balloon fell to earth.on Earth= on (the) earth,意为

4、在地球上”。eg：We live on Earth.我们生活在地球上。2.Talk about what we can do to protect the Earth.讨论为保护地球我们能做些什么。protect v.保护 protect ionn.保护protect sb./sth. from/against sth 保护某人/某物免受伤害We must protect the forest from fire.我们必须保护森林免受火灾。3. About 70% of the Earth is covered by water.百分之七十的地球是被水所覆盖百分数做主语时，谓语动词要与它所指代

5、的名词相一致About 60% of the students in our class are girls.我们班 60% 的学生是女孩。be covered by 被覆盖着，表动作；The road is covered by leaves in autumn.秋天这条路盖满了树叶。4. There are also many people like you and me on Earth.地球上还有很多像你我一样的人。(1) 区分 also; too; eitheralso 常用于肯定句中，位于实义动词前，或用于 be 动词、情态动词之后；He also enjoys reading.他

6、也喜欢阅读 He is also clever.他也很聪明.too 通常用于肯定句末，其前有逗号really like this song, and I like the first one ,too.either 用于否定句末 ,其前有逗号 I don t like singing. She doesn t like singing, either.(2) like v.喜欢 like doing sth 喜欢做某事5.The Earth provides us with air, water and food.地球为我们提供了空气、水少食物。本句中 like 是介词，意为像 ” 一样Tha

7、t s not right. Do it like this.那样不对，像这样做才对。provide 及物动词，意为提供”，provide sb. with sth.= provide sth. for sb.为某人提供某物.The sun provides us with light and heat.= The sun provides light and heat for us. 太阳给我们提供光和热。6. Today, there is a lot of pollution. 今天，有很多污染。pollution 不可数名词，意为污染”。air pollution空气污染noise p

8、ollution 噪声污染There is a lot of pollution in the air here.这里的空气有大量的污染。pollute 及物动词，意为污染；弄脏”The dirty water from the factory pollutes the river.来自工厂的脏水污染了这条河。7. We burn things to make energy.我们燃烧一些东西来制造能量burn 及物动词，=set .on fire 意为燃烧；点燃”energy 不可数名词，意为能量；能源”make energy “制造能量；获取能量”She burns all her book

9、s.她把书全烧了。It is importa nt to save en ergy. 节省能源十分重要。Now, people use water, the wind and the sun to make energy.如今，人们利用水、风和太阳来获取能量。8. We put our rubbish into the sea and under the ground.我们把垃圾倒入海洋、埋入地下。putinto 把放入；把倒入They put the waste water into the river.他们把废水倒入河中。Please put all your toys into the

10、box.请把你所有的玩具都放入这个箱子里。拓展】和 put 有关的短语： put up 举起；张贴put off 推迟；推延 put away 把,，收拾好put down 放下；写下；记下 put on 穿上 put out 熄灭；扑灭9. We must stop doi ng these thi ngs. 我们必须停止做这件事。stop doing sth 意为停止做某事”，即停下手头正在做的事情。It s time for class.Stop talk in g.到上课时间了，不要说话了。区分：stop doi ng sth 停止手头正在做的事情stop to do sth 停下手头

11、的事情，去做另一件事情(停下来去做 )We stopped to talk when we met in the street.当我们在街上碰见时，我们停下来说话。We are all tired. Let s stop to have a rest.我们都累了，停下来休息一会儿吧。10.lt is importa nt for us to protect the Earth for our future.对我们来说，为未来而保护地球是重要的。It is+形容词 adj.+for sb. +动词不定式短语 to do sth 对某人来说做某事是It is important for us to

12、 learn English.对我们来说学英语很重要。It s very useful for us to lear n En glish well.对我们来说学好英语很有用。It is good for me to eat more vegetables.多吃蔬菜对我而言是有好处的。以上句型中，有时也可将for sb.省去，即 It is +adj.+ to do sth.做某事是样的习题练习一.同义词()1. The water in the river is very dirty and it kills lots of fish in it .A. makescleanB. makes

13、healthy C. makesinterestingD. makesdie()2. We should protect the Earth from now on, or well be in dan ger.A. keep safe B. keepdirty C. keepfresh D. keep beautiful()3.The cars give out lots of bad gases (气体)and they pollute the air.A. make clean B. makefresh C. make new D. make dirty( )4. Our school

14、gives us lots of cha nces to show ourselves.A.helps withB. provides with C. throws away D. putsinto( )5. The garage isn t large eno ugh for two cars. A.good B.big C.high二.根据句意及首字母提示完成单词.1. We all kn ow that the E_ is round.2. Some people are work ing in the f_ by the river.3. Which one do you like b

15、etter, the l_one or the small one.4. The l_ is used for grow ing food.5. This article has two p_.6. A lio n is the king of the f_.7. Ma ny peoople still burn wood to make e_ .8. We often have a q_ at the begi nning of the class.9. D ont t_ away the rubbish in the river.10. Its i_ for us to keepour b

16、ody healthy.三. 用括号内所给单词的正确形式填空。1. France is a_(beauty) seaside (海边)country.2. I water the_(plant) twice a week.3. My dress is_(differenee) from yours.4. I saw many_(animal) in the zoo yesterday.5. There_(be) two books and a pencil on the desk6. We can get a lot of_ (energy) from food.7.Miss Li, can

17、you help me? I cant solve these difficult_ (problem).8. The little girl is so sad that she just can t stop_(cry)9. Three_ (quarter)of teh world s surface is covered with water.10.It good for us_ (liste n)to En glish ofte n.四.单项选择.( )1. There are different animals_Earth.A. onB. in C. with D. to( )2.

18、- What do the pla nts n eed to live? - They n eed_ and water.A. a light B. lightsC. lightD. ma ny lights( )3. Where do an imals live? -Some live_the land. Some fly_A. on; inB. to; on C. in; inD. on; on()4. Stop_ around and get on with the job.A. play B. to play C. plays D. playing()5._ is the weathe

19、r like today in Guan gzhou? It is sunny and hot.A. How B. Why C. WhatD. When( )6. We are going to liste n to Doctor Wan gs_in the school hall.A.reportB. repeatC. problemD. questi on( )7. Taiwa n is a_ of China.A. la ndB. bodyC. partD. sect ion()8. We only have_ books. A. little B. much C. ma nyD. fe

20、w( )9. They_ the childre n_ food an;d books.A. give; with B. provide; with C. provide; for D. give; forD.widethe sky.()10. Our teacher always asks us_ to bed late.A. going B. not going C. to goD. not to go()11. -Dont throw_rubbish on the ground.Oh, Im sorry.A. aB. anC. /D. theOur team gets a new job

21、, but_ is difficult for us to finish it in a day.C. itD. he()14. Dont_your fin gers_ your mouth. Its bad for your health.A. put; intoB. throw; intoC. put; upD. put; aside.( )15. When you do the liste ning practice, please_ the importa nt in formatio n.A. catchB. kn owC. lookD. make( )16.lt is very impor