Unit 7 Know Our World.Lesson 38 The World Is a Big Place.课件

课件17张PPT。
1. We live on a planet called
Earth. So the Earth is a __________
2.The world is a large place, it has seven
___________.They are_____________
________________________________
________________________________
3.Which continent do you live on? So
China is in ___.It is the_______continients
4.What do you know about China? --It
has the ________ (多)population in the
world. It is the third ________(大)
Country in the world.
What do you know about the world?planetcontinents largestAsialargestNorth AmericaAntarctiaAfricaAsiaSouth AmericaAustraliaEuropelargestAsia AfricaNorth
AmericaSouth
AmericaAntarctiaEuropeAustraliaWhich continent is the largest one/ the second largest one/ third largest one/ ...?Let’s do it! Ex3.Asia AfricaAustralia AntarctiaNorth AmericaSouth AmericaEuropeThere are eight p___________ in the solar system. They are : Mercury 水星 Venus 金星 Earth 地球 Mars 火星
Jupiter 木星 Saturn土星 Uranus 天王星 Neptune 海王星lanets Lesson 38
The World Is a Big Place在地理课
出国
去过
其它任何国家
去了
旅行有趣。
迫不及待做…
名胜古迹Step1 巩固复习in geography classgo abroadhave/has been toany other countrieshave/has gone toIt’s fun to travel.can’t wait to do…
places of interestin total
face a big problem
be covered with
the earth’s surface
two thirds
one fifth
point them out
increase quickly
dry places
live on the other six continents
its different parts
＊总计;总共
＊面临大问题
＊被….覆盖
＊地球表面
＊三分之二
＊五分之一
＊指出它们
＊快速增长
＊干燥的地方
＊住在其它
六大洲上
＊它的不同部分Step2 预习检测Step3 Task-based Reading:What is the problem the earth faces?
Can people live on the seven continents?
3.How much of the world is covered with land?
The population is increasing very quickly.No, they can’t.One third.4.How many oceans are there in the world? What are they?
5. What is largest part of the ocean?
6. It must be treated well for our children and for our children’s children too.(翻译)
Four. The Pacific Ocean, the Indian Ocean, The Atlantic Ocean, an the Arctic Ocean.The Pacific Ocean.为了我们的后代后代我们一定要善和待地球。Para.1 an increasing population is
a big problem for the earth In 2010, over 7 billionBy 2025, about 8 billionBy 2050, 9 billionPara.2 People can’t live everywhere on the earthWe can’t live in water.We can’t live in deserts.We can’t live in the places with high mountains.We can’t live in the places with a lot of snow and ice.Step 4 Clues of the text:Para.3 Six of the seven continents are good for people to live on.Antarctic is covered with snow and ice all year round.People can live on the other six contientsPara.4 Two thirds of the earth is covered with oceans.the Pacific Oceanthe Indian Oceanthe Atlantic Oceanthe Arctic OceanPara.5 We should treat the earth well.Let’s do it Ex.1讲练1. in total = in all 合计; 总计
the total of 大量; 许多 (谓单)
a total of +可数名词复数 (谓常用复)
强化:
Over 1,000 people attended the meeting in total.
A total of twenty letters______ received last month. 上月共收到20 封信精were精讲练2. increase 增加;增大;增长; 增强
increase by +倍数/ 百分数 “增加了…倍/百分之…”
increase to +具体数字 “增加到…”

强化: The company has _______ the price of its cars.
公司提高了汽车的价格.
The number of the laptop______________ 25%
last year.
The population has ____________(from 300,000) _____ 70,000.000.
increasedincreased byincreasedtoby + 将来时间 (用将来时)
by + 过去时间 (用过去完成时)
强化: _____ you finish doing the work by next Sunday?
We ____________(learn) 1500 hundred new words by 2013.Willhad learned4. 基本分数表达:
(1)基数/序数(基为子,序为母) 如:1/5 one fifth 1/9 one ninth
(2)分子> 1, 分母用复数 如: 2/5 two fifths 7/9 seven ninths
特殊分数表达: half 一半 quarter 四分之一
如:1/2 one half 1/4 a quarter 3/4 three quarters
强化: __________(四分之一)of us have left our pictures home.
________ (一半) of us are from North China.
注: 分数+ of + 可数名词复数 (谓复)
分数+ of + 不可数名词 (谓单)
强化: ___________ (三分之二)of information is ture.
_____________(五分之三) of the students _____ girls in our school.A quarterA halfTwo thirdsThree fifthsare5. His room ________ the sea. It is cool in summer. (v. 面对; 面向; 面临)
He was washing his _______ when the doorbell rang. (n. 脸)
6. be covered with 被…覆盖
注: 被动语态结构 : be + 过去分词
强化: He _________the table_______ a big piece of paper 他用一大张纸把桌子盖上了.
The field________________(被…覆盖)so many beautiful flowers. facesfacecoveredwithis covered with in total; on the earth; in the future; be covered with ; be treated wellOnce the world __________________ green plants and the living things led a peaceful life _____________. However, later some animals ______________________ and was even killed for money. There are not many ____________. Luckily, people are trying to save the animals in danger now. We all hope that all the living things will live a pleasant life as before ______________.was covered withon the earthwere not treated wellin totalin the futureStep5 ：当堂检测：