[ti:UNIT 7 Know Our World Coming! Lesson 50: The World Is a Big Place!]
[0:02.214]UNIT 7
[0:04.289]Know Our World
[0:08.093]Lesson 50:
[0:09.961]The World Is a Big Place!
[0:13.436]THINK ABOUT IT!
[0:14.796]·Which part of the world do you live in? ·你生活在世界的哪个部分？
[0:17.688]·What do you know about the place where you live? ·对于你所居住的地方你知道什么？
[0:20.919]·How many people are there in the world? ·世界有多少人口？
[0:24.316]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？
[0:30.672]How many people are there in the world? 世界上有多少人？
[0:34.498]In the year 2000, the world's population was about six billion. 在2000年，世界人口大约有60亿。
[0:41.046]That's 6 000 000 000! 即6 000 000 000！
[0:48.359]The population of the world is increasing very quickly. 世界人口在快速增长。
[0:52.696]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。
[1:01.114]By 2050, there will be 9.1 billion people. 到2050年，将会有91亿人。
[1:07.322]Where do all the people live? 所有的人住在哪里呢？
[1:10.298]People live on land. 人们住在陆地上。
[1:13.019]About one-third of the world is land. 世界的陆地大约占三分之一。
[1:17.100]There are seven continents: 有七个大洲：
[1:19.566]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。
[1:30.536]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。
[1:37.084]How big are the world's oceans? 世界上的海洋有多大？
[1:41.080]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。
[1:48.223]There are four main oceans: 主要有四个大洋：
[1:50.944]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。
[1:59.618]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。
[2:04.975]How many deserts does the world have? 世界上有多少沙漠？
[2:08.801]Not all land is good for people. 并非所有的陆地都适宜人类居住。
[2:12.144]Some land is too dry. 一些陆地太干燥。
[2:14.695]This land is called desert. 这种陆地叫沙漠。
[2:17.586]Deserts cover twenty percent of the earth's surface. 沙漠覆盖了地球表面的百分之二十。
[2:22.008]What's the world's biggest island? 世界上最大的岛是什么？
[2:24.899]The world's biggest island is Greenland. 世界上最大的岛是格林兰岛。
[2:27.961]Greenland is northeast of Canada. 格林兰岛在加拿大的东北部。
[2:31.277]What's the world's longest river? 世界上最长的河流是什么？
[2:34.508]The Nile River in Africa is the longest river. 非洲的尼罗河是最长的河流。
[2:39.284]LET'S DO IT! 做一做！
[2:40.981]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。
[2:45.438]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。
[2:50.770]What are some of the world's physical features? 世界的一些物理特征是什么？
[2:53.851]What is the highest mountain? 最高的山是什么山？
[2:55.950]What is the biggest ocean? 最大的海洋是什么？
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