九年级英语上册Unit4AmazingScienceTopic2I’mexcitedaboutthethingsthatwillbediscoveredinthefutureSectionC课件仁爱版.ppt

Unit 4 Amazing ScienceTopic 2 I’m excited about the things that will be discovered in the future.
Section C
What are you going to be when you grow up?Why?
Do you know anything about Mars?
solar system
Mars is the fourth from the sun in our solar system and is named after Mars, the Roman god of war.
Mars
the Roman god of war
被命名
太阳系
罗马战神
n. 风暴,暴(风)雨
It is much smaller than the earth. Its diameter is 53% of the earth’s.
直径
During spring and summer, the strong storms can cover the whole surface of Mars. The gravity on its surface is about 40% as strong as it is on earth.
引力,重力
1a Read and understand. Look at the pictures and predict which statements are true about Mars. Then read the passage quickly and check the answers.
_____ 1. Mars looks like a red ball.
_____ 2. The temperature on Mars is very
high.
_____ 3. Mars is much larger than the
earth.
_____ 4. Mars is too far away for us to
reach.
T
F
F
F
Listen to 1a and answer the questions.
(1) What does Mars look like?
It looks like a red and orange ball.
(2) How far is Mars from the sun?
It’s about 228 million kilometers away from the sun.
(3) What’s the temperature on Mars?
It is between -138℃and 28℃.
1. Its diameter is 53% as wide as that of the
%。
2. The gravity on the surface of Mars is about
two-fifths as strong as it is on
的引力大约是地球引力的五分之二。
倍数(分数)+ as +adj.+as ……的几倍
3. Mars goes around the sun at a distance of
about 228 million
228 000 000千米处环绕着太阳转。
at a distance of …有……距离
Language Points
4. Scientists are still searching for more information about 。
search for :表示没有“被搜索的对象”只有“寻找的目标”。如:
All night they searched for the lost boy.
search… for…表示搜查某一对象的目的是要找到什么, 强调有具体的目标。如:
She searched many shops for Jim’s gift.
search 意为“在……搜查”或“搜身”, 是个及物动词,后面直接跟“被搜查的对象”。如:
searched every room in the house.
Language Points
1b Read 1a again and write down the information about Mars.
Diameter
Color
S