2015-2016年仁爱版初中英语九年级英语上册全套精品课件Unit 4 Topic 2 Section C

2015-2016年仁爱版初中 英语九年级英语上册全套 精品课件

Unit 4 Amazing Science Topic 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?

太阳系

罗马战神

solar system

Mars

the Roman god of war

Mars is the fourth planet from the sun in our solar system and is named after Mars, the Roman god of war.被命名

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n. 风暴，暴(风)雨

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. T 1. Mars looks like a red ball. _____ F 2. The temperature on Mars is very _____ high. F 3. Mars is much larger than the _____ earth. F 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℃.

1a Read and understand.

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.

1b Read 1a again and write down the information about Mars.Diameter53% as wide as that of the earth

Colorred and orange

Shapea ball

Climateduring spring and summer: strong storms temperature: between138℃and 28℃

Gravity

Distance from the sunabout 228 million kilometers

about two-fifths as strong as it is on earth

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

Retell 1a

fourth planet of the solar Mars, the ___

____ system, goes around the sun at a distance of about 228 million kilometers. _________ diameter is 53% as wide as that of the Its _______ red orange earth. It looks like a _____ and _______ball. spring and It’s very beautiful. But during ______ storms _______, cover the summer strong __________can whole__________of Mars. The gravity on surface the surface of it is about ________ two-fifths strong as________as it is on earth.

1c Discuss the crazy questions with your partner and state your reasons.1. Does Mars have a good climate for plants? 2. Is Mars a useful place to dry fruit? 3. Is Mars a good place for human beings to live? 4. Is Mars a comfortable place for heavy people?

Read 2 and answer the questions. (1) Who is this e-mail from and to? It is from Uncle Stephen to Kangkang. (2) How long did it take them to get there? More than two years. (3) Did everything go well during the journey? No, it didn’t.