Unit 4 Topic 2 Section C课件+内嵌音视频（仁爱科普版九年级上册）

(共20张PPT)
I'm excited about the things that will
be discovered in the future.
Unit 4 Topic 2
Section C
Know about Mars.
Learn “A+be+倍数+as+adj./adv.原级+as+B”.
Be able to write an e-mail about Mars and ask for more information about Mars.
The life of the space
The sun
The earth
The moon
The star system
The solar system
planets
The black hole
The universe
The small planet
hits the earth
distance from the sun
color
Shape
climate
temperature
oxygen
gravity
What do you know about Mars
diameter
____ 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
The temperature on Mars is between -138 C and 28 c.
Its diameter is 53% as wide as that of the earth.
It takes a spaceship about 8 months to reach Mars ...
1a Look at the pictures and predict which statements are true about Mars. Then read the passage quickly and check the answers.
1a Read and understand.
1. be named after/ be named by
1) be covered by+（人/组织/机构 ...） :表动作,由...承担/负担/支付;被...掩护/报道/监视/控制等等,表示抽象的概念, 后面接人, 机构, 或者组织.
All roads have been covered by the police .
万达广场以公司“万达”为名。/阿里巴巴是由马云命名的。
Alibaba Corporation was named by MaYun.
Wanda Plaza was named after Wanda.
2) be covered with+（雪/草地/烟雾 ...） : 被...覆盖,表状态,表示具体的覆盖.如被雪/草地/布/被子/盖子/罩子等东西盖住.
The ground is covered with water.
2.be covered by/with
3.倍数的表达法
1) Its diameter is 53% as wide as that of the earth.
2)The gravity on the surface of Mars is about two-fifths as strong as it is on earth.
A+be+倍数+as+adj./adv.原级+as+B
A+be+倍数+adj./adv.比较级+than+B
拓展
归纳
可以是百分数、分数等
1b Read 1a again and write down the information about Mars.
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
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.
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. ______________(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
since
took
get
quite
What’s worse
those
What
(1) Who is this e-mail from and to
(2) How long did it take them to get there
(3) Did everything go well during the journey
Read 2 and answer the questions.
It is from Uncle Stephen to Kangkang.
More than two years.
No, it didn’t.
clothing
food and drinks
weather
transportation
…
3a Write back an e-mail to Uncle Stephen for Kangkang and ask him for more information about Mars. The list may help you.
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 am looking forward to your e-mail!
Good luck!
Yours,
Kangkang
3b Work in pairs. Check your partner’s e-mail and use your knowledge of Mars to answer the questions for Uncle Stephen.
We learn:
1. Some words: Roman，diameter, storm, weigh, gravity
2. Some phrases: be named after, solar system，at a distance of, search for
We can: 1. Talk about something more about Mars.
1.be named after__________ 2.at a distance of_________
3.be covered by__________ 4. be closet to____________
5. 围着...转_____________ 6.太阳系___________
7.直径_________________ 8.风暴_____________
9.重力、引力___________ 10 搜寻_____________
被命名为…
有…的距离
被…覆盖
与…最靠近
go around
solar system
diameter
storm
gravity
search for
Read 1a.
Memorize the useful expressions and key sentences which we learn today.
Preview Section D.