课件22张PPT。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? solar system Mars is the fourth planet from the sun in our solar system and is named after Mars, the Roman god of war. Marsthe 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.TFFFListen 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
Language Points 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. Language Points 1b Read 1a again and write down the information about Mars. 53% as wide as that of the earth red and orangea 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 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 forRetell 1a 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. Exercisefourthdistanceredorangespringsummerstormssurfacetwo-fifthsstrongdiameter1c 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. 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 StephensincetookgetquiteWhat’s worsethoseWhat2 Kangkang’s uncle sent an e-mail to him from Mars. Choose the right words to complete the letter. 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. 3b Work in pairs. Check your partner’s e-mail and use your knowledge of Mars to answer the questions for Uncle Stephen. 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 You can write it like this :SummaryWe 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.Read 1a.
Memorize the useful expressions and key sentences which we learned today.
Finish Section C in your workbook.
Review Sections A-C.AssignmentThank you 课件内容介绍和使用说明
本课件是为仁爱英语九年级上册Unit 4 Topic 2 Section C编写的教学课件， 这是第四单元第二话题的第三课时。本课为读写课。该课继续以火星为话题，在语篇中学习相关的单词和句型，培养学生的阅读理解能力、书面表达能力。通过本课的学习，学生对火星将会有进一步的了解。为更好更有效地完成本课的教学任务，本课件从学生实际出发，对教材进行了必要的整合，教学设计直观生动。本节课主要活动有2个，1a和3a，因此对教学设计作如下安排：
Getting students ready for learning:
师生共同谈论理想，并探讨火星等太空知识。(幻灯片2、3 )
Pre-reading:
呈现太阳系、火星及罗马战神的图片，简单介绍火星，教学部分生词，引入1a的学习。(幻灯片4、5 )
While-reading:
预测读前问题，阅读 1a，然后进行核对。(幻灯片6 )
听1a录音，回答问题，提高学生的听力。(幻灯片7 )
播放1a动画，注意模仿语音语调，进一步理解文章内容。(幻灯片8 )
让学生精读1a，找出文中的疑难点，并进行讲解。(幻灯片 9、10)
Post-reading:
让学生再读1a，完成1b。(幻灯片11)
让学生找出关键词复述1a，加深理解，提高语言表达能力。(幻灯片12 )
在理解1a的基础上，完成信息转换练习。(幻灯片13 )
Practice:
小组活动。根据1c的问题，展开讨论，组成对话，然后导入并学习2。(幻灯片14 )
学生阅读2，然后回答问题，并完成填空练习。(幻灯片15、16 )
完成3a。(幻灯片17 )
两人一组，检查同伴的e-mail，并试着回答邮件的问题。完成3b。(幻灯片18 )
呈现范文，供学生进行自我评价、同伴互评做参考。(幻灯片19 )
Assigning homework:
总结本堂课的新单词、短语和新语法项目，让学生能把握整堂课的重点。
(幻灯片20 )
② 设计了书面显性作业及课文朗读、对话练习和预习新课等隐性作业。(幻灯片21)
