UNIT 7 Know Our World

Lesson 50:The World Is a Big Place!

THINK ABOUT IT!

Which part of the world do you live in?
你生活在世界的哪个部分？
What do you know about the place where you live?
对于你所居住的地方你知道什么？
How many people are there in the world?
世界有多少人口？
How many continents does the world have? Seven! Can you point to them?
世界上有几个大陆？7个！你能指出它们么？
How many people are there in the world?
世界上有多少人？
In the year 2000, the world's population was about six billion.
在2000年，世界人口大约有60亿。
That's 6 000 000 000!
即6 000 000 000！
The population of the world is increasing very quickly.
世界人口在快速增长。
By 2025, scientists predict the world will have 7.8 billion people.
到2025年，科学家们预计世界将会有78亿人。
By 2050, there will be 9.1 billion people.
到2050年，将会有91亿人。
Where do all the people live?
所有的人住在哪里呢？
People live on land.
人们住在陆地上。
About one-third of the world is land.
世界的陆地大约占三分之一。
There are seven continents:
有七个大洲：
Africa, Asia, Australia, Europe, North America, South America and Antarctica.
非洲、亚洲、大洋洲、欧洲、北美洲、南美洲和南极洲。
Antarctica is the world's coldest and the world's driest continent.
南极洲是世界上最寒冷和最干燥的大洲。
How big are the world's oceans?
世界上的海洋有多大？
The world really has one big ocean, but we have names for different pieces of it.
世界其实只有一个大洋，但是我们对不同区域有不同的命名。
There are four main oceans:
主要有四个大洋：
the Pacific Ocean, the Atlantic Ocean, the Indian Ocean and the Arctic Ocean.
太平洋、大西洋、印度洋和北冰洋。
Oceans cover about three-quarters of the earth's surface.
大洋覆盖了地球表面的四分之三左右。
How many deserts does the world have?
世界上有多少沙漠？
Not all land is good for people.
并非所有的陆地都适宜人类居住。
Some land is too dry.
一些陆地太干燥。
This land is called desert.
这种陆地叫沙漠。
Deserts cover twenty percent of the earth's surface.
沙漠覆盖了地球表面的百分之二十。
What's the world's biggest island?
世界上最大的岛是什么？
The world's biggest island is Greenland.
世界上最大的岛是格林兰岛。
Greenland is northeast of Canada.
格林兰岛在加拿大的东北部。
What's the world's longest river?
世界上最长的河流是什么？
The Nile River in Africa is the longest river.
非洲的尼罗河是最长的河流。
LET'S DO IT!
做一做！
The world is made up of many different kinds of places.
世界是由不同种类的地点组成的。
In a small group, talk about things you know about the world's geography.
分组讨论你知道的关于世界地理的事情。
What are some of the world's physical features?
世界的一些物理特征是什么？
What is the highest mountain?
最高的山是什么山？
What is the biggest ocean?
最大的海洋是什么？