《The World Is a Big Place》Know Our World PPT教學(xué)課件
第一部分內(nèi)容：Learning Targets
Key words & phrases:
planet, billion, total, increase, surface, Indian, Atlantic, Arctic, in total, one third, be covered with…, two thirds
Key sentences:
1. Can you point them out?
2. The earth is a very special planet, and it faces a big problem.
3. In the year 2010, the world’s population was over 7 billion in total.
4. It is increasing very quickly.
5. And by 2050, the world’s population may reach 9 billion.
6. We can’t live in water, and only about one third of our planet is land.
7. Antarctica is covered with snow and ice all year round.
8. The earth is our home now，and it will be our home in the future.
9. It has the highest point on the earth in the Himalayas.
Grammar: passive voice
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The World Is a Big PlacePPT，第二部分內(nèi)容：Warming up
What problems the earth faces?
Population problems
Environmental pollution
Poverty
Exhausted resource
Words and expressions
planet n. 行星
billion n. 十億；千兆
total n. 總計(jì)；總數(shù)
adj. 總的；總計(jì)的
increase v. 增加；增大
surface n. 表面；表層
Indian adj. 印度的 n. 印度人
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The World Is a Big PlacePPT，第三部分內(nèi)容：Presentation
Listen and read
The earth is a very special planet, and it faces a big problem. In the year 2010, the world’s population was over 7 billion in total. It is increasing very quickly. By 2025, the world may have about 8 billion people. And by 2050, the world’s population may reach 9 billion.
There is another problem. People can’t live everywhere on the earth. We can’t live in water, and only about one third of our planet is land. But parts of this land are very dry. These dry places are called deserts. Some areas have very high mountains. Others have a lot of snow and ice. It is not easy to live in those places.
There are seven continents: Asia, Africa, Australia, Antarctica, Europe, North America and South America. Antarctica is covered with snow and ice all year round. Luckily, people can live on the other six continents. On these continents, there are green forests, fresh water and rich lands.
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The World Is a Big PlacePPT，第四部分內(nèi)容：Let’s Do It!
1.Read the lesson and match each paragraph with its main idea.
Paragraph 1 a. Six of the seven continents are
Paragraph 2 b. We should treat the earth well.
Paragraph 3 c. An increasing population is a big
Paragraph 4 d. Two thirds of the earth is covered
Paragraph 5 e. People cannot live everywhere on
2.Fill in the blanks with the correct forms of the words in the box.
increase dry surface billion total
1. The number of swimmers here is __________ quickly because it’s very hot these days.
2. The school has a __________ of 900 students.
3. I think it may be the __________ season of the year.
4. The __________ of our body is skin. It protects us.
5. How many __________ of people are there in the world now?
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The World Is a Big PlacePPT，第五部分內(nèi)容：Language points
1. Can you point them out?
point v．指，指向。
常用短語(yǔ)：point at指著；point out指出，說(shuō)明。
例：He pointed out the dangers of driving alone.
他指出了單獨(dú)開(kāi)車的危險(xiǎn)性。
Can you point out the mistakes in this picture？
你能指出這張圖片中的錯(cuò)誤嗎？
2. The earth is a very special planet, and it faces a big problem.
face v. 面臨；面對(duì)。
它在此作及物動(dòng)詞，后面可接人或表示困難、形勢(shì)、問(wèn)題等的抽象名詞或動(dòng)名詞作賓語(yǔ)。
例: You should face the challenge bravely.
你應(yīng)該勇敢地面對(duì)挑戰(zhàn)。
3. In the year 2010, the world’s population was over 7 billion in total.
(1) billion n．十億。其復(fù)數(shù)形式為billions。當(dāng)其前有具體的數(shù)詞時(shí)，用單數(shù)形式，表示確數(shù)；當(dāng)其前沒(méi)有數(shù)詞或由some, several, many等詞修飾時(shí)，用復(fù)數(shù)形式，且其后要接介詞of，表示概數(shù)。類似用法的詞還有hundred(百), thousand(千), million(百萬(wàn))等。
例: This company earns two billion dollars a year.
這家公司一年要賺20億美元。
Billions of stars twinkled in the sky.
無(wú)數(shù)的星星在天空中閃爍。
(2) in total意為“總計(jì)，合計(jì)，總共”, 相當(dāng)于in all。
a total of … 總數(shù)為……
例: His sister has three hundred stamps in total.
他的姐姐總共有三百?gòu)堗]票。
Our class has a total of 60 students.我們班總共有60人。
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The World Is a Big PlacePPT，第六部分內(nèi)容：Grammar
被動(dòng)語(yǔ)態(tài)
被動(dòng)語(yǔ)態(tài)表示主語(yǔ)是謂語(yǔ)動(dòng)作的承受
者，一般說(shuō)來(lái)，當(dāng)強(qiáng)調(diào)動(dòng)作承受者，不必說(shuō)出執(zhí)行者或執(zhí)行者含糊不清時(shí)，多用被動(dòng)語(yǔ)態(tài)。
1. These dry places are called deserts.
2. Antarctica is covered with snow and ice all year round.
3. It must be treated well for our children and for our children’s children, too!
4. It’s pronounced like the letter “A”.
被動(dòng)語(yǔ)態(tài)——構(gòu)成
be + 過(guò)去分詞（ be隨著主語(yǔ)人稱和數(shù)以及時(shí)態(tài)的不同而變化）
can / must / may / should … + be + 過(guò)去分詞（含有情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)）
主動(dòng)語(yǔ)態(tài)變?yōu)楸粍?dòng)語(yǔ)態(tài)
一般現(xiàn)在時(shí)：
主：We believe him.
被：He is believed by us.
一般過(guò)去時(shí)：
主：He bought his children some pens.
被：Some pens were bought for his children by him.
一般將來(lái)時(shí)：
主：Everyone will know the truth soon .
被：The truth will be known by everyone.
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The World Is a Big PlacePPT，第七部分內(nèi)容：Exercises
一、單項(xiàng)選擇
1. We have a lovely room. It’s one of ____ in the hotel.
A. nice B. nicer
C. nicest D. the nicest
2. ____ of the students are from the countryside.
A. Third quarter B. Three quarters
C. Three quarter D. Third quarters
3. —Who has ____ marks in English, Wang Lin, Zhang Fang or Li Hong? —Li Hong．
A. good B. better C. best D. the best
4. Hong Kong _____ to be a good place for eating today.
A. knows B. knew
C. is knownD. was known
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The World Is a Big PlacePPT，第八部分內(nèi)容：Summary
1. Learn some new words and expressions.
2. Review the present perfect tense
3. Master the passive voice.
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The World Is a Big PlacePPT，第九部分內(nèi)容：Homework
1. Recite the words and phrases in this lesson.
2. Complete the related exercises.
3. Preview next lesson
關(guān)鍵詞：冀教版八年級(jí)下冊(cè)英語(yǔ)PPT課件免費(fèi)下載，The World Is a Big PlacePPT下載，Know Our WorldPPT下載，.PPT格式；
