仁爱科普版九年级上册Unit 4 Amazing Science Topic 2 Section C 课件 (共25张PPT)

(共25张PPT)
Unit 4
Amazing Science
Topic 2
Section C
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Language Goal
能熟悉并正确运用本课时的重点单词和短语
能掌握含有分数，百分数等的同级比较
能了解火星的相关知识
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Mars is named after Mars, the Roman god of war.
the Roman god of war
Mars
be named after 以……而命名
罗马战神
新知学习
重点研讨
课堂小结
当堂检测
学习目标
水星（Mercury）
金星（Venus）
地球（Earth）
火星（Mars）
木星（Jupiter）
土星（Saturn）
天王星（Uranus）
海王星（Neptune）
solar system
[`s ul `sist m]
Which one is Mars
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Mars is the fourth planet from the sun in our solar system.
Mars
新知学习
重点研讨
课堂小结
当堂检测
学习目标
It is much smaller than the earth. Its diameter is 53% of the earth’s.
直径 [ da ′ m t (r) ]
新知学习
重点研讨
课堂小结
当堂检测
学习目标
The gravity on its surface is about 40% as strong as it is on earth. So a person weighs 90 kilos on earth weighs only 36 kilos on Mars.
[′gr v ti ]引力，重力
[wei] v. 称重
新知学习
重点研讨
课堂小结
当堂检测
学习目标
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
Predict which statements are true about Mars.
What do you know about Mars What does it look like
Mars is the fourth planet from the sun in our solar system and is named after Mars, the Roman god of war. Its diameter is 53% as wide as that of the earth. Mars goes around the sun at a distance of about 228 million kilometers. You can tell which planet is Mars because it is bright red in the night sky. It looks like a red and orange ball. It's very beautiful. But during spring and summer, the surface of Mars is covered by strong storms.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
1a Read and understand.
The gravity on the surface of Mars is about two-fifths as strong as it is on earth. So a person who weighs 90 kilos on earth weighs only 36 kilos on Mars. The temperature on Mars is between -138℃ and 28℃. The air has only 0.13% oxygen.
It takes a spaceship about eight months to reach Mars from the earth when the two planets are closest to each other. Scientists are still searching for more information about Mars.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Diameter Color Shape
Climate Gravity Distance from the sun
53% as wide as that of the earth
red and orange
a ball
during spring and summer: strong storms temperature: between
-138℃ and 28℃
about two-fifths as strong as it is on earth
about 228 million kilometers
1b Read 1a again and write down the information about Mars.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
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
1c Discuss the crazy questions with your partner and state your reasons.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
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 according to the key words.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
2 Kangkang’s uncle sent an e-mail to him from Mars.
Choose the right words to complete the letter.
Hi Kangkang,
It has been two days_______( since, from) we landed on Mars. It ______(cost, took) us more than two years to______ (reach, get) here. Generally, the journey went well, but the living conditions were_____( quiet, quite) bad during the journey. We had to produce most of the food in the spaceship.
since
took
get
quite
新知学习
重点研讨
课堂小结
当堂检测
学习目标
____________(What’s more, What’s worse), our water supplies were very low. We had to limit the use of water during ______(those, these) days. So we had a shower every six weeks. We will spend another seven hundred and sixty-three days on Mars. ______( How, What) a long time! I often miss the family, but the excitement of being on Mars is worth it!
Wish me luck!
Yours,
Uncle Stephen
What’s worse
those
What
( )1. It’s been five days since they landed on Mars.
( )2. It took them three years to get to Mars.
( )3. They had plenty of food and water in the spaceship.
( )4. They have been away from the earth for 763 days.
( )5. The excitement and risks on Mars are worth it.
F
F
F
T
T
Read again and mark True (T) or False (F).
新知学习
重点研讨
课堂小结
当堂检测
学习目标
新知学习
重点研讨
课堂小结
当堂检测
学习目标
3a Write back an e-mail to Uncle Stephen for Kangkang and ask him for more information
about Mars. The list may help you.
clothing ; food and drinks ;
weather ; transportation
…
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Dear Uncle,
I'm very glad to receive your e-mail, and I know that the living conditions were quite bad during your journey. I am interested in the information about Mars. Can you tell me more about it How about the weather on Mars Is it very cold What kind of transportation do you use there I'm looking forward to your e-mail!
Good luck!
Yours,
Kangkang
Language points
1. Mars is the fourth planet from the sun in our solar system
and is named after Mars.
火星是太阳系中离太阳第四远的行星，以火星命名。
name ... after 以……的名字给……取名
be named after 是被动语态
e.g. The baby was named after Bruce Lee.
这个婴儿的名字是以李小龙的名字取的。
新知学习
重点研讨
课堂小结
当堂检测
学习目标
2. Its diameter is 53% as wide as that of the earth.
它的直径是地球直径的53%。
倍数的表示法：倍数+as +形容词或副词原级+as
e.g. This box is five times as heavy as that one.
这个盒子是那个盒子的四倍重。
My house is three times as big as his.
我家是他家的三倍大。
新知学习
重点研讨
课堂小结
当堂检测
学习目标
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 at a distance of 相隔
at a distance 在远处，有相当的距离
e.g. The moon goes around the earth at a distance of 380 000 km.
月球在距地球38万千米的地方绕地球旋转。
The police followed him at a distance.
警察远远地跟着他。
in the distance 在远处
e.g. That is Long Island in the distance over there.
那边远处是长岛。
新知学习
重点研讨
课堂小结
当堂检测
学习目标
4. You can tell which planet is Mars because it is bright red in the night sky.
你可以分辨出哪颗行星是火星，因为它在夜空中是明亮的红色。
tell在这里为“辨别，区别，认出”，常和can, could, be able to连用。
e.g. It was so dark that I couldn’t tell it was you.
天太暗了，我没有认出是你。
5. The surface of Mars is covered by strong storms.
火星表面被强烈的风暴覆盖着。
be covered 被覆盖
be covered with 遮盖，遮蔽
e.g. The ground is covered with show. 土地被雪覆盖。
新知学习
重点研讨
课堂小结
当堂检测
学习目标
6. 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 寻找，搜索
e.g. All night they searched for the lost boy.
整个晚上他们都在搜寻那个丢失的男孩。
search… for… 寻找，搜索（强调有具体的目标）
e.g. She searched many shops for Jim’s gift.
为了送给Jim礼物，她搜索了很多店。
search 在……搜查；搜身。是个及物动词，后面直接跟
“被搜查的对象”。
e.g. Mr. Smith searched every room in the house.
史密斯先生搜索了房子里的每个房间。
新知学习
重点研讨
课堂小结
当堂检测
学习目标
新知学习
重点研讨
课堂小结
当堂检测
学习目标
能掌握含有分数，百分数等的同级比较
了解火星的相关知识
Unit 4 Topic 2
Section C
新知学习
重点研讨
课堂小结
当堂检测
学习目标
一、根据中文提示完成句子。
1. He _____ ______ ______ (以命名) his father.
2. My brother ________ (重) 30 kilos. He is a little thin.
3. This summer holiday I had a good _______(旅行) to the
Mount Huang.
4. If you want to get more ___________(信息) about the
space, please search the Internet.
5. The police followed the man ____ ____ _______ ____
(相隔) about 50 meters.
was named after
weighs
travel
information
at a distance of