Lesson 38 The world is a big place 课件 (2)

课件19张PPT。Lesson 38: The World is a Big Place !Think about it !Which part of the world do you live in ?
What do you know about the place where you live?
How many people are there in the world?你知道如何用英语表达地图上的七大洲和四大洋吗？Let`s learn (1):continent n. 洲，大陆
There are seven continents:
★ Asia n. 亚洲
★ Africa n. 非洲
★ North America n. 北美洲
★ South America n. 南美洲
★ Antarctica n. 南极洲
★ Europe n. 欧洲
★ Australia n. 大洋洲Let`s learn (2):ocean n. 海洋；大海
There are four main oceans .
★ the Pacific Ocean n. 太平洋
★ the Atlantic Ocean n. 大西洋
★ the Indian Ocean n. 印度洋
★ the Arctic Ocean n. 北冰洋
New words:increase v. 增加，增大
land n. 陆地
earth n. 地球；陆地；泥；土
surface n.表面；表层
percent n. 百分之......
island n. 岛，岛屿
Greenland n. 格林兰（岛)
Nile n. 尼罗河
FASCINATING FACT ：Antarctica is the world`s coldest and the world`s driest continent .
Oceans cover about three-quarters of the earth`s surface .
About one-third of the world is land.
Desert cover twenty percent of the earth`s surface .
The world`s biggest island is Greenland.
Greenland is northeast of Canada.
The Nile River in Africa is the longest river.
Let’s read aloud. Please open your books and follow the tape.Read the text agian and fill the blanks:1) Scientists predict the population will be ____ by 2005.
2) About ____ of the world is land. The land that is very ____ is called desert. The deserts cover ____ of the earth`s surface.
3) There are ____ continents . They are ____ , ____, _____ , _____ , North America, South America and Antarctica. Antarctica is the world`s ____ and the world`s _____ continent .
4) There are ____ main oceans. They cove _____ of the world`s surface .They are _____ , _____ , ______ and the Arctic Ocean. _____ is the biggest ocean. _____ is the smallest ocean.
5)Deserts cover ______ of the earth`s surface.
6)The Nile River in Africa is the ______ river. Language Notes 1.The population of the world is increasing very quickly .By 2025, scientists predict the world will have 7.8 billion people.
世界人口增长迅速。科学家预测，到2025年世界上将会有78亿人。
increase意思是“增加;增大;增长;增强;繁殖”。
注意：increase后接介词 by表示“增加了……”；接介词 to 表示“增加到……”。例如：
The population has increase by 300,000 to 70,000,000.
人口增加了30万，总数已达到7千万。Language Notes 2) Oceans cover about three-quarters of the earth`s surface.
大洋覆盖着地球表面的四分之三。
three-quarters意为“四分之三”。quarter是名词，意思是“一刻钟，四分之一”。
类似的词还有half，表示“二分之一”。例如：
A quarter of the students have left their pictures home.
四分之一的学生都把照片掉在家里了。
Half of us are from North China.
我们当中一半来自于华北地区。 Language Notes 3）Not all land is good for people.
并不是所有的土地都适合人们（居住）。
be good for 意思是“对……有好处”。例如：
Reading is good for children. 读书对孩子们有帮助。
Doing morning exercise every day is good for you.
每天做早操对你有好处。
be good to…“对……友好” 例如：
The teacher is good to his students.
这位教师对他的学生很友好。
be good at… “擅长……”。例如：
Are you good at English? 你擅长英语吗？Finish the following exercises: 根据汉语意思完成英语句子:
1）2000年，世界人口大约是60亿。
— the year 2000, the ___ ___ was about six billion.
2）并不是所有的土地都适合人们居住。
___ ___ ___ is good for people.
3）大洋覆盖着地球表面的四分之三。
Oceans cover about ____ of the ____ ____.
4）南极洲是世界上最寒冷和干燥的大洲。
Antarctica is the world`s ____ and the world`s —— continent.
5）非洲的尼罗河是最长的河。
The Nile River in Africa is ——— river.
Look at the following maps.Write the namesof each continent in the blanks.1)——————2)_______________Look at the following maps.Write the namesof each continent in the blanks.3)——————4)_______________Look at the following maps.Write the namesof each continent in the blanks.5)——————6)_______________Look at the following maps.Write the namesof each continent in the blanks.7)——————Let`s do it ! Talk about things you know about
the world`s geography.
★ What are some of the world`s geography?
★ What is the highest mountain?
★ What is the biggest ocean?Work in pairs and then tell your ideas to your classmates ! Good bye!That’s all for today.
Good bye ,class!