《I'm excited about the things that will be discovered in the future》SectionC PPT
第一部分内容：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.
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℃.
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《I'm excited about the things that will be discovered in the future》PPT，第二部分内容：Language Points
1. Its diameter is 53% as wide as that of the
earth.它的直径是地球直径的53%。
2. The gravity on the surface of Mars is about
two-fifths as strong as it is on earth.火星表面
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 kilometers.火星在距太阳约
228 000 000千米处环绕着太阳转。
at a distance of …有 ……距离
4. Scientists are still searching for more information about Mars.科学家们正在对火星进行更多的探索。
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：
Mr.Smith searched every room in the house.
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《I'm excited about the things that will be discovered in the future》PPT，第三部分内容：Key words
Mars, fourth, be named after, diameter, as wide as, at a distance of, tell, because, bright red, ball, storms, gravity, temperature, oxygen, eight months, closest to, searching for
Exercise
Mars, the _______ planet of the solar system, goes around the sun at a _________ of about 228 million kilometers. Its _______ is 53% as wide as that of the earth. It looks like a _____ and _______ball. It’s very beautiful. But during ______ and _______, strong __________can cover the whole__________of Mars. The gravity on the surface of it is about ________ as________as it is on earth.
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《I'm excited about the things that will be discovered in the future》PPT，第四部分内容：Summary
We learn:
1. Some words: storm, weigh, journey
2. Some phrases: name after, as …as,
at a distance of, search for
3. Some sentences:
(1) Its diameter is 53% as wide as that of the earth.
(2) It has been two days since we landed on Mars.
We can :
1. Talk about something more about Mars.
2. Write back an e-mail.
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《I'm excited about the things that will be discovered in the future》PPT，第五部分内容：Assignment
Read 1a.
Memorize the useful expressions and key sentences which we learned today.
Finish Section C in your workbook.
Review Sections A-C.
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