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

课件22张PPT。planetLesson 38The World Is a Big Place!The population of the world is increasing very quicklyIn the year2010,the world’s population was over 7 billion in totalsurfaceHow many continents are there in the world?Seven.the continents of the worldCan you name them?AsiaEuropeNorth AmericaAfricaAntarcticaAustraliaSouth AmericaFour main oceansthe Atlantic Oceanthe Indian OceanThe Arctic OceanThe Pacific Oceanthe oceans of the worldCan you name them?Let’s learn the new words :
planet: n.行星
billion: n.十亿;千兆
total: n.总数总计
adj. 总的；总计的
increase: v.增加增大
surface: n.表面；表层
Atlantic: n.adj.大西洋（的）
Arctic : adj. 北极的Indian: adj. 印度的 n. 印度人Listen and writeThe world I knowI am the best! .What problems does the earth face?
ReadingdesertsSnow and iceHigh mountainsAn increasing population1.Read the lesson and match each paragraph with its main idea.
Paragraph1. a. Six of the seven are good for
people to live on
Paragraph 2. b. We should treat the earth well
Paragraph 3. c. An increasing population is a big
problem for the earth
Paragraph 4. d. Two thirds of the earth is covered
with oceans.
Paragraph 5 . e. People cannot live everywhere
on the earth.
1. There are ________ continents in the world. They are _____________________ __________________________________________________________________.
2. There are _______ oceans in the world. They are ___________________________ ___________________________________ ____________________.sevenfourI remember!Do you know?1.In 2010, the world’s population was over _____________. By 2025, the world will have _____________ people.
2. About ____________of the world is land.
3.Oceans cover about _________________ of the earth’s surface.
4. The coldest and the driest continent in the world is _____________. You can find the answers in the text7 billion8 billionone-thirdtwo thirdsAntarctica Retell the textProblems
Continents
Oceans
One third
Two thirds
Are called
Is covered with
Must be treated
To build up public awareness(意识）in loving the earth
Do you know more problems our earth faces?
What should we do about it?Homework
.Finish exercises of lesson38
.Preview next lesson and
look for more information about
the world